Commit Graph

12240 Commits

Author SHA1 Message Date
Mike Qiu 12c743eb22 powerpc/mm: fix ".__node_distance" undefined
CHK     include/config/kernel.release
  CHK     include/generated/uapi/linux/version.h
  CHK     include/generated/utsrelease.h
  ...
  Building modules, stage 2.
WARNING: 1 bad relocations
c0000000013d6a30 R_PPC64_ADDR64    uprobes_fetch_type_table
  WRAP    arch/powerpc/boot/zImage.pseries
  WRAP    arch/powerpc/boot/zImage.epapr
  MODPOST 1849 modules
ERROR: ".__node_distance" [drivers/block/nvme.ko] undefined!
make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2
make: *** Waiting for unfinished jobs....

The reason is symbol "__node_distance" not been exported in powerpc.

Signed-off-by: Mike Qiu <qiudayu@linux.vnet.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Jesse Larrew <jlarrew@linux.vnet.ibm.com>
Cc: Robert Jennings <rcj@linux.vnet.ibm.com>
Cc: Alistair Popple <alistair@popple.id.au>
Cc: Mike Qiu <qiudayu@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-18 16:40:08 -07:00
Mike Qiu 140ab6452c powerpc/PCI: Fix NULL dereference in sys_pciconfig_iobase() list traversal
3bc955987f ("powerpc/PCI: Use list_for_each_entry() for bus traversal")
caused a NULL pointer dereference because the loop body set the iterator to
NULL:

  Unable to handle kernel paging request for data at address 0x00000000
  Faulting instruction address: 0xc000000000041d78
  Oops: Kernel access of bad area, sig: 11 [#1]
  ...
  NIP [c000000000041d78] .sys_pciconfig_iobase+0x68/0x1f0
  LR [c000000000041e0c] .sys_pciconfig_iobase+0xfc/0x1f0
  Call Trace:
  [c0000003b4787db0] [c000000000041e0c] .sys_pciconfig_iobase+0xfc/0x1f0 (unreliable)
  [c0000003b4787e30] [c000000000009ed8] syscall_exit+0x0/0x98

Fix it by using a temporary variable for the iterator.

[bhelgaas: changelog, drop tmp_bus initialization]
Fixes: 3bc955987f powerpc/PCI: Use list_for_each_entry() for bus traversal
Signed-off-by: Mike Qiu <qiudayu@linux.vnet.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-04-14 16:33:49 -06:00
Paul Mackerras 18aa0da33e powerpc: Don't try to set LPCR unless we're in hypervisor mode
Commit 8f619b5429 ("powerpc/ppc64: Do not turn AIL (reloc-on
interrupts) too early") added code to set the AIL bit in the LPCR
without checking whether the kernel is running in hypervisor mode.  The
result is that when the kernel is running as a guest (i.e., under
PowerKVM or PowerVM), the processor takes a privileged instruction
interrupt at that point, causing a panic.  The visible result is that
the kernel hangs after printing "returning from prom_init".

This fixes it by checking for hypervisor mode being available before
setting LPCR.  If we are not in hypervisor mode, we enable relocation-on
interrupts later in pSeries_setup_arch using the H_SET_MODE hcall.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-12 17:58:48 -07:00
Linus Torvalds 5166701b36 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs updates from Al Viro:
 "The first vfs pile, with deep apologies for being very late in this
  window.

  Assorted cleanups and fixes, plus a large preparatory part of iov_iter
  work.  There's a lot more of that, but it'll probably go into the next
  merge window - it *does* shape up nicely, removes a lot of
  boilerplate, gets rid of locking inconsistencie between aio_write and
  splice_write and I hope to get Kent's direct-io rewrite merged into
  the same queue, but some of the stuff after this point is having
  (mostly trivial) conflicts with the things already merged into
  mainline and with some I want more testing.

  This one passes LTP and xfstests without regressions, in addition to
  usual beating.  BTW, readahead02 in ltp syscalls testsuite has started
  giving failures since "mm/readahead.c: fix readahead failure for
  memoryless NUMA nodes and limit readahead pages" - might be a false
  positive, might be a real regression..."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits)
  missing bits of "splice: fix racy pipe->buffers uses"
  cifs: fix the race in cifs_writev()
  ceph_sync_{,direct_}write: fix an oops on ceph_osdc_new_request() failure
  kill generic_file_buffered_write()
  ocfs2_file_aio_write(): switch to generic_perform_write()
  ceph_aio_write(): switch to generic_perform_write()
  xfs_file_buffered_aio_write(): switch to generic_perform_write()
  export generic_perform_write(), start getting rid of generic_file_buffer_write()
  generic_file_direct_write(): get rid of ppos argument
  btrfs_file_aio_write(): get rid of ppos
  kill the 5th argument of generic_file_buffered_write()
  kill the 4th argument of __generic_file_aio_write()
  lustre: don't open-code kernel_recvmsg()
  ocfs2: don't open-code kernel_recvmsg()
  drbd: don't open-code kernel_recvmsg()
  constify blk_rq_map_user_iov() and friends
  lustre: switch to kernel_sendmsg()
  ocfs2: don't open-code kernel_sendmsg()
  take iov_iter stuff to mm/iov_iter.c
  process_vm_access: tidy up a bit
  ...
2014-04-12 14:49:50 -07:00
Linus Torvalds 0b747172dc Merge git://git.infradead.org/users/eparis/audit
Pull audit updates from Eric Paris.

* git://git.infradead.org/users/eparis/audit: (28 commits)
  AUDIT: make audit_is_compat depend on CONFIG_AUDIT_COMPAT_GENERIC
  audit: renumber AUDIT_FEATURE_CHANGE into the 1300 range
  audit: do not cast audit_rule_data pointers pointlesly
  AUDIT: Allow login in non-init namespaces
  audit: define audit_is_compat in kernel internal header
  kernel: Use RCU_INIT_POINTER(x, NULL) in audit.c
  sched: declare pid_alive as inline
  audit: use uapi/linux/audit.h for AUDIT_ARCH declarations
  syscall_get_arch: remove useless function arguments
  audit: remove stray newline from audit_log_execve_info() audit_panic() call
  audit: remove stray newlines from audit_log_lost messages
  audit: include subject in login records
  audit: remove superfluous new- prefix in AUDIT_LOGIN messages
  audit: allow user processes to log from another PID namespace
  audit: anchor all pid references in the initial pid namespace
  audit: convert PPIDs to the inital PID namespace.
  pid: get pid_t ppid of task in init_pid_ns
  audit: rename the misleading audit_get_context() to audit_take_context()
  audit: Add generic compat syscall support
  audit: Add CONFIG_HAVE_ARCH_AUDITSYSCALL
  ...
2014-04-12 12:38:53 -07:00
Linus Torvalds eeb91e4f9d More ACPI and power management fixes and updates for 3.15-rc1
- Fix for a recently introduced CPU hotplug regression in ARM KVM
    from Ming Lei.
 
  - Fixes for breakage in the at32ap, loongson2_cpufreq, and unicore32
    cpufreq drivers introduced during the 3.14 cycle (-stable material)
    from Chen Gang and Viresh Kumar.
 
  - New powernv cpufreq driver from Vaidyanathan Srinivasan, with bits
    from Gautham R Shenoy and Srivatsa S Bhat.
 
  - Exynos cpufreq driver fix preventing it from being included into
    multiplatform builds that aren't supported by it from Sachin Kamat.
 
  - cpufreq cleanups related to the usage of the driver_data field in
    struct cpufreq_frequency_table from Viresh Kumar.
 
  - cpufreq ppc driver cleanup from Sachin Kamat.
 
  - Intel BayTrail support for intel_idle and ACPI idle from Len Brown.
 
  - Intel CPU model 54 (Atom N2000 series) support for intel_idle from
    Jan Kiszka.
 
  - intel_idle fix for Intel Ivy Town residency targets from Len Brown.
 
  - turbostat updates (Intel Broadwell support and output cleanups)
    from Len Brown.
 
  - New cpuidle sysfs attribute for exporting C-states' target residency
    information to user space from Daniel Lezcano.
 
  - New kernel command line argument to prevent power domains enabled
    by the bootloader from being turned off even if they are not in use
    (for diagnostics purposes) from Tushar Behera.
 
  - Fixes for wakeup sysfs attributes documentation from Geert Uytterhoeven.
 
  - New ACPI video blacklist entry for ThinkPad Helix from Stephen Chandler
    Paul.
 
  - Assorted ACPI cleanups and a Kconfig help update from Jonghwan Choi,
    Zhihui Zhang, Hanjun Guo.
 
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Merge tag 'pm+acpi-3.15-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more ACPI and power management fixes and updates from Rafael Wysocki:
 "This is PM and ACPI material that has emerged over the last two weeks
  and one fix for a CPU hotplug regression introduced by the recent CPU
  hotplug notifiers registration series.

  Included are intel_idle and turbostat updates from Len Brown (these
  have been in linux-next for quite some time), a new cpufreq driver for
  powernv (that might spend some more time in linux-next, but BenH was
  asking me so nicely to push it for 3.15 that I couldn't resist), some
  cpufreq fixes and cleanups (including fixes for some silly breakage in
  a couple of cpufreq drivers introduced during the 3.14 cycle),
  assorted ACPI cleanups, wakeup framework documentation fixes, a new
  sysfs attribute for cpuidle and a new command line argument for power
  domains diagnostics.

  Specifics:

   - Fix for a recently introduced CPU hotplug regression in ARM KVM
     from Ming Lei.

   - Fixes for breakage in the at32ap, loongson2_cpufreq, and unicore32
     cpufreq drivers introduced during the 3.14 cycle (-stable material)
     from Chen Gang and Viresh Kumar.

   - New powernv cpufreq driver from Vaidyanathan Srinivasan, with bits
     from Gautham R Shenoy and Srivatsa S Bhat.

   - Exynos cpufreq driver fix preventing it from being included into
     multiplatform builds that aren't supported by it from Sachin Kamat.

   - cpufreq cleanups related to the usage of the driver_data field in
     struct cpufreq_frequency_table from Viresh Kumar.

   - cpufreq ppc driver cleanup from Sachin Kamat.

   - Intel BayTrail support for intel_idle and ACPI idle from Len Brown.

   - Intel CPU model 54 (Atom N2000 series) support for intel_idle from
     Jan Kiszka.

   - intel_idle fix for Intel Ivy Town residency targets from Len Brown.

   - turbostat updates (Intel Broadwell support and output cleanups)
     from Len Brown.

   - New cpuidle sysfs attribute for exporting C-states' target
     residency information to user space from Daniel Lezcano.

   - New kernel command line argument to prevent power domains enabled
     by the bootloader from being turned off even if they are not in use
     (for diagnostics purposes) from Tushar Behera.

   - Fixes for wakeup sysfs attributes documentation from Geert
     Uytterhoeven.

   - New ACPI video blacklist entry for ThinkPad Helix from Stephen
     Chandler Paul.

   - Assorted ACPI cleanups and a Kconfig help update from Jonghwan
     Choi, Zhihui Zhang, Hanjun Guo"

* tag 'pm+acpi-3.15-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (28 commits)
  ACPI: Update the ACPI spec information in Kconfig
  arm, kvm: fix double lock on cpu_add_remove_lock
  cpuidle: sysfs: Export target residency information
  cpufreq: ppc: Remove duplicate inclusion of fsl_soc.h
  cpufreq: create another field .flags in cpufreq_frequency_table
  cpufreq: use kzalloc() to allocate memory for cpufreq_frequency_table
  cpufreq: don't print value of .driver_data from core
  cpufreq: ia64: don't set .driver_data to index
  cpufreq: powernv: Select CPUFreq related Kconfig options for powernv
  cpufreq: powernv: Use cpufreq_frequency_table.driver_data to store pstate ids
  cpufreq: powernv: cpufreq driver for powernv platform
  cpufreq: at32ap: don't declare local variable as static
  cpufreq: loongson2_cpufreq: don't declare local variable as static
  cpufreq: unicore32: fix typo issue for 'clk'
  cpufreq: exynos: Disable on multiplatform build
  PM / wakeup: Correct presence vs. emptiness of wakeup_* attributes
  PM / domains: Add pd_ignore_unused to keep power domains enabled
  ACPI / dock: Drop dock_device_ids[] table
  ACPI / video: Favor native backlight interface for ThinkPad Helix
  ACPI / thermal: Fix wrong variable usage in debug statement
  ...
2014-04-11 13:20:04 -07:00
Linus Torvalds 042f7b7cbd Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull more powerpc updates from Ben Herrenschmidt:
 "Here are a few more powerpc things for you.

  So you'll find here the conversion of the two new firmware sysfs
  interfaces to the new API for self-removing files that Greg and Tejun
  introduced, so they can finally remove the old one.

  I'm also reverting the hwmon driver for powernv.  I shouldn't have
  merged it, I got a bit carried away here.  I hadn't realized it was
  never CCed to the relevant maintainer(s) and list(s), and happens to
  have some issues so I'm taking it out and it will come back via the
  proper channels.

  The rest is a bunch of LE fixes (argh, some of the new stuff was
  broken on LE, I really need to start testing LE myself !) and various
  random fixes here and there.

  Finally one bit that's not strictly a fix, which is the HVC OPAL
  change to "kick" the HVC thread when the firmware tells us there is
  new incoming data.  I don't feel like waiting for this one, it's
  simple enough, and it makes a big difference in console responsiveness
  which is good for my nerves"

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (26 commits)
  powerpc/powernv Adapt opal-elog and opal-dump to new sysfs_remove_file_self
  Revert "powerpc/powernv: hwmon driver for power values, fan rpm and temperature"
  power, sched: stop updating inside arch_update_cpu_topology() when nothing to be update
  powerpc/le: Avoid creatng R_PPC64_TOCSAVE relocations for modules.
  arch/powerpc: Use RCU_INIT_POINTER(x, NULL) in platforms/cell/spu_syscalls.c
  powerpc/opal: Add missing include
  powerpc: Convert last uses of __FUNCTION__ to __func__
  powerpc: Add lq/stq emulation
  powerpc/powernv: Add invalid OPAL call
  powerpc/powernv: Add OPAL message log interface
  powerpc/book3s: Fix mc_recoverable_range buffer overrun issue.
  powerpc: Remove dead code in sycall entry
  powerpc: Use of_node_init() for the fakenode in msi_bitmap.c
  powerpc/mm: NUMA pte should be handled via slow path in get_user_pages_fast()
  powerpc/powernv: Fix endian issues with sensor code
  powerpc/powernv: Fix endian issues with OPAL async code
  tty/hvc_opal: Kick the HVC thread on OPAL console events
  powerpc/powernv: Add opal_notifier_unregister() and export to modules
  powerpc/ppc64: Do not turn AIL (reloc-on interrupts) too early
  powerpc/ppc64: Gracefully handle early interrupts
  ...
2014-04-09 08:35:31 -07:00
Stewart Smith cc4f265ad9 powerpc/powernv Adapt opal-elog and opal-dump to new sysfs_remove_file_self
We are currently using sysfs_schedule_callback() which is deprecated
and about to be removed. Switch to the new interface instead.

Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-09 13:51:50 +10:00
Michael Wang 9a0133613e power, sched: stop updating inside arch_update_cpu_topology() when nothing to be update
Since v1:
	Edited the comment according to Srivatsa's suggestion.

During the testing, we encounter below WARN followed by Oops:

	WARNING: at kernel/sched/core.c:6218
	...
	NIP [c000000000101660] .build_sched_domains+0x11d0/0x1200
	LR [c000000000101358] .build_sched_domains+0xec8/0x1200
	PACATMSCRATCH [800000000000f032]
	Call Trace:
	[c00000001b103850] [c000000000101358] .build_sched_domains+0xec8/0x1200
	[c00000001b1039a0] [c00000000010aad4] .partition_sched_domains+0x484/0x510
	[c00000001b103aa0] [c00000000016d0a8] .rebuild_sched_domains+0x68/0xa0
	[c00000001b103b30] [c00000000005cbf0] .topology_work_fn+0x10/0x30
	...
	Oops: Kernel access of bad area, sig: 11 [#1]
	...
	NIP [c00000000045c000] .__bitmap_weight+0x60/0xf0
	LR [c00000000010132c] .build_sched_domains+0xe9c/0x1200
	PACATMSCRATCH [8000000000029032]
	Call Trace:
	[c00000001b1037a0] [c000000000288ff4] .kmem_cache_alloc_node_trace+0x184/0x3a0
	[c00000001b103850] [c00000000010132c] .build_sched_domains+0xe9c/0x1200
	[c00000001b1039a0] [c00000000010aad4] .partition_sched_domains+0x484/0x510
	[c00000001b103aa0] [c00000000016d0a8] .rebuild_sched_domains+0x68/0xa0
	[c00000001b103b30] [c00000000005cbf0] .topology_work_fn+0x10/0x30
	...

This was caused by that 'sd->groups == NULL' after building groups, which
was caused by the empty 'sd->span'.

The cpu's domain contained nothing because the cpu was assigned to a wrong
node, due to the following unfortunate sequence of events:

1. The hypervisor sent a topology update to the guest OS, to notify changes
   to the cpu-node mapping. However, the update was actually redundant - i.e.,
   the "new" mapping was exactly the same as the old one.

2. Due to this, the 'updated_cpus' mask turned out to be empty after exiting
   the 'for-loop' in arch_update_cpu_topology().

3. So we ended up calling stop-machine() with an empty cpumask list, which made
   stop-machine internally elect cpumask_first(cpu_online_mask), i.e., CPU0 as
   the cpu to run the payload (the update_cpu_topology() function).

4. This causes update_cpu_topology() to be run by CPU0. And since 'updates'
   is kzalloc()'ed inside arch_update_cpu_topology(), update_cpu_topology()
   finds update->cpu as well as update->new_nid to be 0. In other words, we
   end up assigning CPU0 (and eventually its siblings) to node 0, incorrectly.

Along with the following wrong updating, it causes the sched-domain rebuild
code to break and crash the system.

Fix this by skipping the topology update in cases where we find that
the topology has not actually changed in reality (ie., spurious updates).

CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Paul Mackerras <paulus@samba.org>
CC: Nathan Fontenot <nfont@linux.vnet.ibm.com>
CC: Stephen Rothwell <sfr@canb.auug.org.au>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Robert Jennings <rcj@linux.vnet.ibm.com>
CC: Jesse Larrew <jlarrew@linux.vnet.ibm.com>
CC: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
CC: Alistair Popple <alistair@popple.id.au>
Suggested-by: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Michael Wang <wangyun@linux.vnet.ibm.com>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-09 12:54:17 +10:00
Tony Breeds d3d35d957a powerpc/le: Avoid creatng R_PPC64_TOCSAVE relocations for modules.
When building modules with a native le toolchain the linker will
generate R_PPC64_TOCSAVE relocations when it's safe to omit saving r2 on
a plt call.  This isn't helpful in the conext of a kernel module and the
kernel will fail to load those modules with an error like:
	nf_conntrack: Unknown ADD relocation: 109

This patch tells the linker to avoid createing R_PPC64_TOCSAVE
relocations allowing modules to load.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-09 12:53:44 +10:00
Monam Agarwal 282efb7023 arch/powerpc: Use RCU_INIT_POINTER(x, NULL) in platforms/cell/spu_syscalls.c
Here rcu_assign_pointer() is ensuring that the
initialization of a structure is carried out before storing a pointer
to that structure.
So, rcu_assign_pointer(p, NULL) can always safely be converted to
RCU_INIT_POINTER(p, NULL).

Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-09 12:53:40 +10:00
Michael Neuling bfd25d72ab powerpc/opal: Add missing include
next-20140324 currently fails compiling celleb_defconfig with:

arch/powerpc/include/asm/opal.h:894:42: error: 'struct notifier_block' declared inside parameter list [-Werror]
arch/powerpc/include/asm/opal.h:894:42: error: its scope is only this definition or declaration, which is probably not what you want [-Werror]
arch/powerpc/include/asm/opal.h:896:14: error: 'struct notifier_block' declared inside parameter list [-Werror]

This is due to a missing include which is added here.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-09 12:53:36 +10:00
Joe Perches aba6f4f2e6 powerpc: Convert last uses of __FUNCTION__ to __func__
Just about all of these have been converted to __func__,
so convert the last uses.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-09 12:53:32 +10:00
Anton Blanchard f83319d710 powerpc: Add lq/stq emulation
Recent CPUs support quad word load and store instructions. Add
support to the alignment handler for them.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-09 12:53:28 +10:00
Joel Stanley e28b05e7ae powerpc/powernv: Add invalid OPAL call
This call will not be understood by OPAL, and cause it to add an error
to it's log. Among other things, this is useful for testing the
behaviour of the log as it fills up.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-09 12:53:23 +10:00
Joel Stanley bfc36894a4 powerpc/powernv: Add OPAL message log interface
OPAL provides an in-memory circular buffer containing a message log
populated with various runtime messages produced by the firmware.

Provide a sysfs interface /sys/firmware/opal/msglog for userspace to
view the messages.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-09 12:53:19 +10:00
Mahesh Salgaonkar 6e556b4710 powerpc/book3s: Fix mc_recoverable_range buffer overrun issue.
Currently we wrongly allocate mc_recoverable_range buffer (to hold
recoverable ranges) based on size of the property "mcheck-recoverable-ranges".
This results in allocating less memory to hold available recoverable range
entries from /proc/device-tree/ibm,opal/mcheck-recoverable-ranges.

This patch fixes this issue by allocating mc_recoverable_range buffer based
on number of entries of recoverable ranges instead of device property size.
Without this change we end up allocating less memory and run into memory
corruption issue.

Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-09 12:53:15 +10:00
Michael Neuling fa5c11b790 powerpc: Remove dead code in sycall entry
In:
  commit 742415d6b6
  Author: Michael Neuling <mikey@neuling.org>
  powerpc: Turn syscall handler into macros

We converted the syscall entry code onto macros, but in doing this we
introduced some cruft that's never run and should never have been added.

This removes that code.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-09 12:53:11 +10:00
Li Zhong e47ff70a56 powerpc: Use of_node_init() for the fakenode in msi_bitmap.c
This patch uses of_node_init() to initialize the kobject in the fake
node used in test_of_node(), to avoid following kobject warning.

[    0.897654] kobject: '(null)' (c0000007ca183a08): is not initialized, yet kobject_put() is being called.
[    0.897682] ------------[ cut here ]------------
[    0.897688] WARNING: at lib/kobject.c:670
[    0.897692] Modules linked in:
[    0.897701] CPU: 4 PID: 1 Comm: swapper/0 Not tainted 3.14.0+ #1
[    0.897708] task: c0000007ca100000 ti: c0000007ca180000 task.ti: c0000007ca180000
[    0.897715] NIP: c00000000046a1f0 LR: c00000000046a1ec CTR: 0000000001704660
[    0.897721] REGS: c0000007ca1835c0 TRAP: 0700   Not tainted  (3.14.0+)
[    0.897727] MSR: 8000000000029032 <SF,EE,ME,IR,DR,RI>  CR: 28000024  XER: 0000000d
[    0.897749] CFAR: c0000000008ef4ec SOFTE: 1
GPR00: c00000000046a1ec c0000007ca183840 c0000000014c59b8 000000000000005c
GPR04: 0000000000000001 c000000000129770 0000000000000000 0000000000000001
GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000003fef
GPR12: 0000000000000000 c00000000f221200 c00000000000c350 0000000000000000
GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
GPR24: 0000000000000000 c00000000144e808 c000000000c56f20 00000000000000d8
GPR28: c000000000cd5058 0000000000000000 c000000001454ca8 c0000007ca183a08
[    0.897856] NIP [c00000000046a1f0] .kobject_put+0xa0/0xb0
[    0.897863] LR [c00000000046a1ec] .kobject_put+0x9c/0xb0
[    0.897868] Call Trace:
[    0.897874] [c0000007ca183840] [c00000000046a1ec] .kobject_put+0x9c/0xb0 (unreliable)
[    0.897885] [c0000007ca1838c0] [c000000000743f9c] .of_node_put+0x2c/0x50
[    0.897894] [c0000007ca183940] [c000000000c83954] .test_of_node+0x1dc/0x208
[    0.897902] [c0000007ca183b80] [c000000000c839a4] .msi_bitmap_selftest+0x24/0x38
[    0.897913] [c0000007ca183bf0] [c00000000000bb34] .do_one_initcall+0x144/0x200
[    0.897922] [c0000007ca183ce0] [c000000000c748e4] .kernel_init_freeable+0x2b4/0x394
[    0.897931] [c0000007ca183db0] [c00000000000c374] .kernel_init+0x24/0x130
[    0.897940] [c0000007ca183e30] [c00000000000a2f4] .ret_from_kernel_thread+0x5c/0x68
[    0.897947] Instruction dump:
[    0.897952] 7fe3fb78 38210080 e8010010 ebe1fff8 7c0803a6 4800014c e89f0000 3c62ff6e
[    0.897971] 7fe5fb78 3863a950 48485279 60000000 <0fe00000> 39000000 393f0038 4bffff80
[    0.897992] ---[ end trace 1eeffdb9f825a556 ]---

Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-09 12:53:07 +10:00
Aneesh Kumar K.V 1dc954bd2f powerpc/mm: NUMA pte should be handled via slow path in get_user_pages_fast()
We need to handle numa pte via the slow path

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-09 12:53:03 +10:00
Anton Blanchard 9000c17dc0 powerpc/powernv: Fix endian issues with sensor code
One OPAL call and one device tree property needed byte swapping.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-09 12:52:49 +10:00
Rafael J. Wysocki fe10739284 Merge branch 'pm-cpufreq'
* pm-cpufreq:
  cpufreq: ppc: Remove duplicate inclusion of fsl_soc.h
  cpufreq: create another field .flags in cpufreq_frequency_table
  cpufreq: use kzalloc() to allocate memory for cpufreq_frequency_table
  cpufreq: don't print value of .driver_data from core
  cpufreq: ia64: don't set .driver_data to index
  cpufreq: powernv: Select CPUFreq related Kconfig options for powernv
  cpufreq: powernv: Use cpufreq_frequency_table.driver_data to store pstate ids
  cpufreq: powernv: cpufreq driver for powernv platform
  cpufreq: at32ap: don't declare local variable as static
  cpufreq: loongson2_cpufreq: don't declare local variable as static
  cpufreq: unicore32: fix typo issue for 'clk'
  cpufreq: exynos: Disable on multiplatform build
2014-04-08 13:28:02 +02:00
Linus Torvalds 26c12d9334 Merge branch 'akpm' (incoming from Andrew)
Merge second patch-bomb from Andrew Morton:
 - the rest of MM
 - zram updates
 - zswap updates
 - exit
 - procfs
 - exec
 - wait
 - crash dump
 - lib/idr
 - rapidio
 - adfs, affs, bfs, ufs
 - cris
 - Kconfig things
 - initramfs
 - small amount of IPC material
 - percpu enhancements
 - early ioremap support
 - various other misc things

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (156 commits)
  MAINTAINERS: update Intel C600 SAS driver maintainers
  fs/ufs: remove unused ufs_super_block_third pointer
  fs/ufs: remove unused ufs_super_block_second pointer
  fs/ufs: remove unused ufs_super_block_first pointer
  fs/ufs/super.c: add __init to init_inodecache()
  doc/kernel-parameters.txt: add early_ioremap_debug
  arm64: add early_ioremap support
  arm64: initialize pgprot info earlier in boot
  x86: use generic early_ioremap
  mm: create generic early_ioremap() support
  x86/mm: sparse warning fix for early_memremap
  lglock: map to spinlock when !CONFIG_SMP
  percpu: add preemption checks to __this_cpu ops
  vmstat: use raw_cpu_ops to avoid false positives on preemption checks
  slub: use raw_cpu_inc for incrementing statistics
  net: replace __this_cpu_inc in route.c with raw_cpu_inc
  modules: use raw_cpu_write for initialization of per cpu refcount.
  mm: use raw_cpu ops for determining current NUMA node
  percpu: add raw_cpu_ops
  slub: fix leak of 'name' in sysfs_slab_add
  ...
2014-04-07 16:38:06 -07:00
Josh Triplett 527518f1a9 ppc: make PPC_BOOK3S_64 select IRQ_WORK
Fix breakage which will be exposed by the patch "kconfig: make allnoconfig
disable options behind EMBEDDED and EXPERT".

arch/powerpc/kernel/mce.c, compiled in for PPC_BOOK3S_64, calls
functions only built when IRQ_WORK, so select it.  Fixes the following
build error:

  arch/powerpc/kernel/built-in.o: In function `.machine_check_queue_event':
  (.text+0x11260): undefined reference to `.irq_work_queue'

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-07 16:36:09 -07:00
Alexandre Bounine 2aaf308b95 rapidio: rework device hierarchy and introduce mport class of devices
This patch removes an artificial RapidIO bus root device and establishes
actual device hierarchy by providing reference to real parent devices.
It also introduces device class for RapidIO controller devices (on-chip
or an eternal bridge, known as "mport").

Existing implementation was sufficient for SoC-based platforms that have
a single RapidIO controller.  With introduction of devices using
multiple RapidIO controllers and PCIe-to-RapidIO bridges the old scheme
is very limiting or does not work at all.  The implemented changes allow
to properly reference platform's local RapidIO mport devices and provide
device details needed for upper layers.

This change to RapidIO device hierarchy does not break any known
existing kernel or user space interfaces.

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Li Yang <leoli@freescale.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com>
Cc: Stef van Os <stef.van.os@prodrive-technologies.com>
Cc: Jerry Jacobs <jerry.jacobs@prodrive-technologies.com>
Cc: Arno Tiemersma <arno.tiemersma@prodrive-technologies.com>
Cc: Rob Landley <rob@landley.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-07 16:36:07 -07:00
Rashika Kheria 82e0703b6c include/linux/crash_dump.h: add vmcore_cleanup() prototype
Eliminate the following warning in proc/vmcore.c:

  fs/proc/vmcore.c:1088:6: warning: no previous prototype for `vmcore_cleanup' [-Wmissing-prototypes]

[akpm@linux-foundation.org: clean up powerpc, remove unneeded EXPORT_SYMBOL]
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-07 16:36:06 -07:00
Linus Torvalds 467a9e1633 CPU hotplug notifiers registration fixes for 3.15-rc1
The purpose of this single series of commits from Srivatsa S Bhat (with
 a small piece from Gautham R Shenoy) touching multiple subsystems that use
 CPU hotplug notifiers is to provide a way to register them that will not
 lead to deadlocks with CPU online/offline operations as described in the
 changelog of commit 93ae4f978c (CPU hotplug: Provide lockless versions
 of callback registration functions).
 
 The first three commits in the series introduce the API and document it
 and the rest simply goes through the users of CPU hotplug notifiers and
 converts them to using the new method.
 
 /
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Merge tag 'cpu-hotplug-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull CPU hotplug notifiers registration fixes from Rafael Wysocki:
 "The purpose of this single series of commits from Srivatsa S Bhat
  (with a small piece from Gautham R Shenoy) touching multiple
  subsystems that use CPU hotplug notifiers is to provide a way to
  register them that will not lead to deadlocks with CPU online/offline
  operations as described in the changelog of commit 93ae4f978c ("CPU
  hotplug: Provide lockless versions of callback registration
  functions").

  The first three commits in the series introduce the API and document
  it and the rest simply goes through the users of CPU hotplug notifiers
  and converts them to using the new method"

* tag 'cpu-hotplug-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (52 commits)
  net/iucv/iucv.c: Fix CPU hotplug callback registration
  net/core/flow.c: Fix CPU hotplug callback registration
  mm, zswap: Fix CPU hotplug callback registration
  mm, vmstat: Fix CPU hotplug callback registration
  profile: Fix CPU hotplug callback registration
  trace, ring-buffer: Fix CPU hotplug callback registration
  xen, balloon: Fix CPU hotplug callback registration
  hwmon, via-cputemp: Fix CPU hotplug callback registration
  hwmon, coretemp: Fix CPU hotplug callback registration
  thermal, x86-pkg-temp: Fix CPU hotplug callback registration
  octeon, watchdog: Fix CPU hotplug callback registration
  oprofile, nmi-timer: Fix CPU hotplug callback registration
  intel-idle: Fix CPU hotplug callback registration
  clocksource, dummy-timer: Fix CPU hotplug callback registration
  drivers/base/topology.c: Fix CPU hotplug callback registration
  acpi-cpufreq: Fix CPU hotplug callback registration
  zsmalloc: Fix CPU hotplug callback registration
  scsi, fcoe: Fix CPU hotplug callback registration
  scsi, bnx2fc: Fix CPU hotplug callback registration
  scsi, bnx2i: Fix CPU hotplug callback registration
  ...
2014-04-07 14:55:46 -07:00
Gautham R. Shenoy 81f359027a cpufreq: powernv: Select CPUFreq related Kconfig options for powernv
Enable CPUFreq for PowerNV. Select "performance", "powersave",
"userspace" and "ondemand" governors. Choose "ondemand" to be the
default governor.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-04-07 14:35:28 +02:00
Vaidyanathan Srinivasan b3d627a5f2 cpufreq: powernv: cpufreq driver for powernv platform
Backend driver to dynamically set voltage and frequency on
IBM POWER non-virtualized platforms.  Power management SPRs
are used to set the required PState.

This driver works in conjunction with cpufreq governors
like 'ondemand' to provide a demand based frequency and
voltage setting on IBM POWER non-virtualized platforms.

PState table is obtained from OPAL v3 firmware through device
tree.

powernv_cpufreq back-end driver would parse the relevant device-tree
nodes and initialise the cpufreq subsystem on powernv platform.

The code was originally written by svaidy@linux.vnet.ibm.com. Over
time it was modified to accomodate bug-fixes as well as updates to the
the cpu-freq core. Relevant portions of the change logs corresponding
to those modifications are noted below:

 * The policy->cpus needs to be populated in a hotplug-invariant
   manner instead of using cpu_sibling_mask() which varies with
   cpu-hotplug. This is because the cpufreq core code copies this
   content into policy->related_cpus mask which should not vary on
   cpu-hotplug. [Authored by srivatsa.bhat@linux.vnet.ibm.com]

 * Create a helper routine that can return the cpu-frequency for the
   corresponding pstate_id. Also, cache the values of the pstate_max,
   pstate_min and pstate_nominal and nr_pstates in a static structure
   so that they can be reused in the future to perform any
   validations. [Authored by ego@linux.vnet.ibm.com]

 * Create a driver attribute named cpuinfo_nominal_freq which creates
   a sysfs read-only file named cpuinfo_nominal_freq. Export the
   frequency corresponding to the nominal_pstate through this
   interface.

     Nominal frequency is the highest non-turbo frequency for the
   platform.  This is generally used for setting governor policies
   from user space for optimal energy efficiency. [Authored by
   ego@linux.vnet.ibm.com]

 * Implement a powernv_cpufreq_get(unsigned int cpu) method which will
   return the current operating frequency. Export this via the sysfs
   interface cpuinfo_cur_freq by setting powernv_cpufreq_driver.get to
   powernv_cpufreq_get(). [Authored by ego@linux.vnet.ibm.com]

[Change log updated by ego@linux.vnet.ibm.com]

Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Signed-off-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-04-07 14:35:27 +02:00
Anton Blanchard bb4398e1de powerpc/powernv: Fix endian issues with OPAL async code
OPAL defines opal_msg as a big endian struct so we have to
byte swap it on little endian builds.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-07 10:34:27 +10:00
Benjamin Herrenschmidt 798af00c4d powerpc/powernv: Add opal_notifier_unregister() and export to modules
opal_notifier_register() is missing a pending "unregister" variant
and should be exposed to modules.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-07 10:33:16 +10:00
Benjamin Herrenschmidt 8f619b5429 powerpc/ppc64: Do not turn AIL (reloc-on interrupts) too early
Turn them on at the same time as we allow MSR_IR/DR in the paca
kernel MSR, ie, after the MMU has been setup enough to be able
to handle relocated access to the linear mapping.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-07 10:33:15 +10:00
Benjamin Herrenschmidt a944a9c40b powerpc/ppc64: Gracefully handle early interrupts
If we take an interrupt such as a trap caused by a BUG_ON before the
MMU has been setup, the interrupt handlers try to enable virutal mode
and cause a recursive crash, making the original problem very hard
to debug.

This fixes it by adjusting the "kernel_msr" value in the PACA so that
it only has MSR_IR and MSR_DR (translation for instruction and data)
set after the MMU has been initialized for the processor.

We may still not have a console yet but at least we don't get into
a recursive fault (and early debug console or memory dump via JTAG
of the kernel buffer *will* give us the proper error).

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-07 10:33:15 +10:00
Benjamin Herrenschmidt 7222f779ac powerpc/prom: early_init_dt_scan_cpus() updates cpu features only once
All our cpu feature updates were done for every CPU in the device-tree,
thus overwriting the cputable bits over and over again. Instead do them
only for the boot CPU.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-07 10:33:14 +10:00
Benjamin Herrenschmidt 36ae37e343 powerpc: Make boot_cpuid common between 32 and 64-bit
Move the definition to setup-common.c and set the init value
to -1 on both 32 and 64-bit (it was 0 on 64-bit).

Additionally add a check to prom.c to garantee that the init
value has been udpated after the DT scan.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-07 10:33:14 +10:00
Benjamin Herrenschmidt 4a85b31d36 powerpc: Adjust CPU_FTR_SMT on all platforms
For historical reasons that code was under #ifdef CONFIG_PPC_PSERIES
but it applies equally to all 64-bit platforms.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-07 10:33:13 +10:00
Michael Neuling e6b8fd028b powerpc/tm: Disable IRQ in tm_recheckpoint
We can't take an IRQ when we're about to do a trechkpt as our GPR state is set
to user GPR values.

We've hit this when running some IBM Java stress tests in the lab resulting in
the following dump:

  cpu 0x3f: Vector: 700 (Program Check) at [c000000007eb3d40]
      pc: c000000000050074: restore_gprs+0xc0/0x148
      lr: 00000000b52a8184
      sp: ac57d360
     msr: 8000000100201030
    current = 0xc00000002c500000
    paca    = 0xc000000007dbfc00     softe: 0     irq_happened: 0x00
      pid   = 34535, comm = Pooled Thread #
  R00 = 00000000b52a8184   R16 = 00000000b3e48fda
  R01 = 00000000ac57d360   R17 = 00000000ade79bd8
  R02 = 00000000ac586930   R18 = 000000000fac9bcc
  R03 = 00000000ade60000   R19 = 00000000ac57f930
  R04 = 00000000f6624918   R20 = 00000000ade79be8
  R05 = 00000000f663f238   R21 = 00000000ac218a54
  R06 = 0000000000000002   R22 = 000000000f956280
  R07 = 0000000000000008   R23 = 000000000000007e
  R08 = 000000000000000a   R24 = 000000000000000c
  R09 = 00000000b6e69160   R25 = 00000000b424cf00
  R10 = 0000000000000181   R26 = 00000000f66256d4
  R11 = 000000000f365ec0   R27 = 00000000b6fdcdd0
  R12 = 00000000f66400f0   R28 = 0000000000000001
  R13 = 00000000ada71900   R29 = 00000000ade5a300
  R14 = 00000000ac2185a8   R30 = 00000000f663f238
  R15 = 0000000000000004   R31 = 00000000f6624918
  pc  = c000000000050074 restore_gprs+0xc0/0x148
  cfar= c00000000004fe28 dont_restore_vec+0x1c/0x1a4
  lr  = 00000000b52a8184
  msr = 8000000100201030   cr  = 24804888
  ctr = 0000000000000000   xer = 0000000000000000   trap =  700

This moves tm_recheckpoint to a C function and moves the tm_restore_sprs into
that function.  It then adds IRQ disabling over the trechkpt critical section.
It also sets the TEXASR FS in the signals code to ensure this is never set now
that we explictly write the TM sprs in tm_recheckpoint.

Signed-off-by: Michael Neuling <mikey@neuling.org>
cc: stable@vger.kernel.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-07 10:33:13 +10:00
Greg Kurz a08a53ea4c powerpc/le: Enable RTAS events support
The current kernel code assumes big endian and parses RTAS events all
wrong. The most visible effect is that we cannot honor EPOW events,
meaning, for example, we cannot shut down a guest properly from the
hypervisor.

This new patch is largely inspired by Nathan's work: we get rid of all
the bit fields in the RTAS event structures (even the unused ones, for
consistency). We also introduce endian safe accessors for the fields used
by the kernel (trivial rtas_error_type() accessor added for consistency).

Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-07 10:33:12 +10:00
Stephen Chivers c59c015b6a powerpc: Correct emulated mtfsf instruction
The emulated (CONFIG_MATH_EMULATION_FULL)
PowerPC Floating Point instruction mtfsf
does not correctly copy bits from its source
register to the Floating Point Status and Register (FPSCR).

The error is in the preparation of the mask used to
select the bits to be copied from the source to the FPSCR.

Execution of the mtfsf instruction does not produce the same
results on a MPC8548 platform (emulated floating point)
as on MPC7410 or 440EP platforms (hardware floating point).

This error has been detected using a Freescale MPC8548
based platform and the patch below tested using that platform.

The patch is based on the patch(es) provided by
Gabriel Paubert and analysis by Gabriel, James Yang and David Laight.

Signed-off-by: Stephen Chivers <schivers@csc.com>
Signed-off-by: Gabriel Paubert <paubert@iram.es>
Tested-by: Stephen Chivers <schivers@csc.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-04-07 10:33:11 +10:00
Linus Torvalds d1d9cfc330 A number of cleanups plus support for the RDSEED instruction, which
will be showing up in Intel Broadwell CPU's.
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Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random

Pull /dev/random changes from Ted Ts'o:
 "A number of cleanups plus support for the RDSEED instruction, which
  will be showing up in Intel Broadwell CPU's"

* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
  random: Add arch_has_random[_seed]()
  random: If we have arch_get_random_seed*(), try it before blocking
  random: Use arch_get_random_seed*() at init time and once a second
  x86, random: Enable the RDSEED instruction
  random: use the architectural HWRNG for the SHA's IV in extract_buf()
  random: clarify bits/bytes in wakeup thresholds
  random: entropy_bytes is actually bits
  random: simplify accounting code
  random: tighten bound on random_read_wakeup_thresh
  random: forget lock in lockless accounting
  random: simplify accounting logic
  random: fix comment on "account"
  random: simplify loop in random_read
  random: fix description of get_random_bytes
  random: fix comment on proc_do_uuid
  random: fix typos / spelling errors in comments
2014-04-04 21:25:28 -07:00
Linus Torvalds 68114e5eb8 Most of the changes were largely clean ups, and some documentation.
But there were a few features that were added.
 
 Uprobes now work with event triggers and multi buffers.
 Uprobes have support under ftrace and perf.
 
 The big feature is that the function tracer can now be used within the
 multi buffer instances. That is, you can now trace some functions
 in one buffer, others in another buffer, all functions in a third buffer
 and so on. They are basically agnostic from each other. This only
 works for the function tracer and not for the function graph trace,
 although you can have the function graph tracer running in the top level
 buffer (or any tracer for that matter) and have different function tracing
 going on in the sub buffers.
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Merge tag 'trace-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from Steven Rostedt:
 "Most of the changes were largely clean ups, and some documentation.
  But there were a few features that were added:

  Uprobes now work with event triggers and multi buffers and have
  support under ftrace and perf.

  The big feature is that the function tracer can now be used within the
  multi buffer instances.  That is, you can now trace some functions in
  one buffer, others in another buffer, all functions in a third buffer
  and so on.  They are basically agnostic from each other.  This only
  works for the function tracer and not for the function graph trace,
  although you can have the function graph tracer running in the top
  level buffer (or any tracer for that matter) and have different
  function tracing going on in the sub buffers"

* tag 'trace-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (45 commits)
  tracing: Add BUG_ON when stack end location is over written
  tracepoint: Remove unused API functions
  Revert "tracing: Move event storage for array from macro to standalone function"
  ftrace: Constify ftrace_text_reserved
  tracepoints: API doc update to tracepoint_probe_register() return value
  tracepoints: API doc update to data argument
  ftrace: Fix compilation warning about control_ops_free
  ftrace/x86: BUG when ftrace recovery fails
  ftrace: Warn on error when modifying ftrace function
  ftrace: Remove freelist from struct dyn_ftrace
  ftrace: Do not pass data to ftrace_dyn_arch_init
  ftrace: Pass retval through return in ftrace_dyn_arch_init()
  ftrace: Inline the code from ftrace_dyn_table_alloc()
  ftrace: Cleanup of global variables ftrace_new_pgs and ftrace_update_cnt
  tracing: Evaluate len expression only once in __dynamic_array macro
  tracing: Correctly expand len expressions from __dynamic_array macro
  tracing/module: Replace include of tracepoint.h with jump_label.h in module.h
  tracing: Fix event header migrate.h to include tracepoint.h
  tracing: Fix event header writeback.h to include tracepoint.h
  tracing: Warn if a tracepoint is not set via debugfs
  ...
2014-04-03 10:26:31 -07:00
Linus Torvalds cd6362befe Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
 "Here is my initial pull request for the networking subsystem during
  this merge window:

   1) Support for ESN in AH (RFC 4302) from Fan Du.

   2) Add full kernel doc for ethtool command structures, from Ben
      Hutchings.

   3) Add BCM7xxx PHY driver, from Florian Fainelli.

   4) Export computed TCP rate information in netlink socket dumps, from
      Eric Dumazet.

   5) Allow IPSEC SA to be dumped partially using a filter, from Nicolas
      Dichtel.

   6) Convert many drivers to pci_enable_msix_range(), from Alexander
      Gordeev.

   7) Record SKB timestamps more efficiently, from Eric Dumazet.

   8) Switch to microsecond resolution for TCP round trip times, also
      from Eric Dumazet.

   9) Clean up and fix 6lowpan fragmentation handling by making use of
      the existing inet_frag api for it's implementation.

  10) Add TX grant mapping to xen-netback driver, from Zoltan Kiss.

  11) Auto size SKB lengths when composing netlink messages based upon
      past message sizes used, from Eric Dumazet.

  12) qdisc dumps can take a long time, add a cond_resched(), From Eric
      Dumazet.

  13) Sanitize netpoll core and drivers wrt.  SKB handling semantics.
      Get rid of never-used-in-tree netpoll RX handling.  From Eric W
      Biederman.

  14) Support inter-address-family and namespace changing in VTI tunnel
      driver(s).  From Steffen Klassert.

  15) Add Altera TSE driver, from Vince Bridgers.

  16) Optimizing csum_replace2() so that it doesn't adjust the checksum
      by checksumming the entire header, from Eric Dumazet.

  17) Expand BPF internal implementation for faster interpreting, more
      direct translations into JIT'd code, and much cleaner uses of BPF
      filtering in non-socket ocntexts.  From Daniel Borkmann and Alexei
      Starovoitov"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1976 commits)
  netpoll: Use skb_irq_freeable to make zap_completion_queue safe.
  net: Add a test to see if a skb is freeable in irq context
  qlcnic: Fix build failure due to undefined reference to `vxlan_get_rx_port'
  net: ptp: move PTP classifier in its own file
  net: sxgbe: make "core_ops" static
  net: sxgbe: fix logical vs bitwise operation
  net: sxgbe: sxgbe_mdio_register() frees the bus
  Call efx_set_channels() before efx->type->dimension_resources()
  xen-netback: disable rogue vif in kthread context
  net/mlx4: Set proper build dependancy with vxlan
  be2net: fix build dependency on VxLAN
  mac802154: make csma/cca parameters per-wpan
  mac802154: allow only one WPAN to be up at any given time
  net: filter: minor: fix kdoc in __sk_run_filter
  netlink: don't compare the nul-termination in nla_strcmp
  can: c_can: Avoid led toggling for every packet.
  can: c_can: Simplify TX interrupt cleanup
  can: c_can: Store dlc private
  can: c_can: Reduce register access
  can: c_can: Make the code readable
  ...
2014-04-02 20:53:45 -07:00
Linus Torvalds 7cbb39d4d4 Merge tag 'kvm-3.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
 "PPC and ARM do not have much going on this time.  Most of the cool
  stuff, instead, is in s390 and (after a few releases) x86.

  ARM has some caching fixes and PPC has transactional memory support in
  guests.  MIPS has some fixes, with more probably coming in 3.16 as
  QEMU will soon get support for MIPS KVM.

  For x86 there are optimizations for debug registers, which trigger on
  some Windows games, and other important fixes for Windows guests.  We
  now expose to the guest Broadwell instruction set extensions and also
  Intel MPX.  There's also a fix/workaround for OS X guests, nested
  virtualization features (preemption timer), and a couple kvmclock
  refinements.

  For s390, the main news is asynchronous page faults, together with
  improvements to IRQs (floating irqs and adapter irqs) that speed up
  virtio devices"

* tag 'kvm-3.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (96 commits)
  KVM: PPC: Book3S HV: Save/restore host PMU registers that are new in POWER8
  KVM: PPC: Book3S HV: Fix decrementer timeouts with non-zero TB offset
  KVM: PPC: Book3S HV: Don't use kvm_memslots() in real mode
  KVM: PPC: Book3S HV: Return ENODEV error rather than EIO
  KVM: PPC: Book3S: Trim top 4 bits of physical address in RTAS code
  KVM: PPC: Book3S HV: Add get/set_one_reg for new TM state
  KVM: PPC: Book3S HV: Add transactional memory support
  KVM: Specify byte order for KVM_EXIT_MMIO
  KVM: vmx: fix MPX detection
  KVM: PPC: Book3S HV: Fix KVM hang with CONFIG_KVM_XICS=n
  KVM: PPC: Book3S: Introduce hypervisor call H_GET_TCE
  KVM: PPC: Book3S HV: Fix incorrect userspace exit on ioeventfd write
  KVM: s390: clear local interrupts at cpu initial reset
  KVM: s390: Fix possible memory leak in SIGP functions
  KVM: s390: fix calculation of idle_mask array size
  KVM: s390: randomize sca address
  KVM: ioapic: reinject pending interrupts on KVM_SET_IRQCHIP
  KVM: Bump KVM_MAX_IRQ_ROUTES for s390
  KVM: s390: irq routing for adapter interrupts.
  KVM: s390: adapter interrupt sources
  ...
2014-04-02 14:50:10 -07:00
Linus Torvalds b9f2b21a32 Devicetree changes for v3.15
Updates to devicetree core code. This branch contains the following notable changes:
 * Add reserved memory binding
 * Make struct device_node a kobject and remove legacy /proc/device-tree
 * ePAPR conformance fixes
 * Update in-kernel DTC copy to version v1.4.0
 * Preparation changes for dynamic device tree overlays
 * minor bug fixes and documentation changes
 
 The most significant change in this branch is the conversion of struct
 device_node to be a kobject that is exposed via sysfs and removal of the
 old /proc/device-tree code. This simplifies the device tree handling
 code and tightens up the lifecycle on device tree nodes.
 
 [updated: added fix for dangling select PROC_DEVICETREE]
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Merge tag 'dt-for-linus' of git://git.secretlab.ca/git/linux

Pull devicetree changes from Grant Likely:
 "Updates to devicetree core code.  This branch contains the following
  notable changes:

   - add reserved memory binding
   - make struct device_node a kobject and remove legacy
     /proc/device-tree
   - ePAPR conformance fixes
   - update in-kernel DTC copy to version v1.4.0
   - preparatory changes for dynamic device tree overlays
   - minor bug fixes and documentation changes

  The most significant change in this branch is the conversion of struct
  device_node to be a kobject that is exposed via sysfs and removal of
  the old /proc/device-tree code.  This simplifies the device tree
  handling code and tightens up the lifecycle on device tree nodes.

  [updated: added fix for dangling select PROC_DEVICETREE]"

* tag 'dt-for-linus' of git://git.secretlab.ca/git/linux: (29 commits)
  dt: Remove dangling "select PROC_DEVICETREE"
  of: Add support for ePAPR "stdout-path" property
  of: device_node kobject lifecycle fixes
  of: only scan for reserved mem when fdt present
  powerpc: add support for reserved memory defined by device tree
  arm64: add support for reserved memory defined by device tree
  of: add missing major vendors
  of: add vendor prefix for SMSC
  of: remove /proc/device-tree
  of/selftest: Add self tests for manipulation of properties
  of: Make device nodes kobjects so they show up in sysfs
  arm: add support for reserved memory defined by device tree
  drivers: of: add support for custom reserved memory drivers
  drivers: of: add initialization code for dynamic reserved memory
  drivers: of: add initialization code for static reserved memory
  of: document bindings for reserved-memory nodes
  Revert "of: fix of_update_property()"
  kbuild: dtbs_install: new make target
  ARM: mvebu: Allows to get the SoC ID even without PCI enabled
  of: Allows to use the PCI translator without the PCI core
  ...
2014-04-02 14:27:15 -07:00
Linus Torvalds e6d9bfc638 Merge branch 'powernv-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc non-virtualized cpuidle from Ben Herrenschmidt:
 "This is the branch I mentioned in my other pull request which contains
  our improved cpuidle support for the "powernv" platform
  (non-virtualized).

  It adds support for the "fast sleep" feature of the processor which
  provides higher power savings than our usual "nap" mode but at the
  cost of losing the timers while asleep, and thus exploits the new
  timer broadcast framework to work around that limitation.

  It's based on a tip timer tree that you seem to have already merged"

* 'powernv-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  cpuidle/powernv: Parse device tree to setup idle states
  cpuidle/powernv: Add "Fast-Sleep" CPU idle state
  powerpc/powernv: Add OPAL call to resync timebase on wakeup
  powerpc/powernv: Add context management for Fast Sleep
  powerpc: Split timer_interrupt() into timer handling and interrupt handling routines
  powerpc: Implement tick broadcast IPI as a fixed IPI message
  powerpc: Free up the slot of PPC_MSG_CALL_FUNC_SINGLE IPI message
2014-04-02 13:47:29 -07:00
Linus Torvalds 235c7b9feb Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull main powerpc updates from Ben Herrenschmidt:
 "This time around, the powerpc merges are going to be a little bit more
  complicated than usual.

  This is the main pull request with most of the work for this merge
  window.  I will describe it a bit more further down.

  There is some additional cpuidle driver work, however I haven't
  included it in this tree as it depends on some work in tip/timer-core
  which Thomas accidentally forgot to put in a topic branch.  Since I
  didn't want to carry all of that tip timer stuff in powerpc -next, I
  setup a separate branch on top of Thomas tree with just that cpuidle
  driver in it, and Stephen has been carrying that in next separately
  for a while now.  I'll send a separate pull request for it.

  Additionally, two new pieces in this tree add users for a sysfs API
  that Tejun and Greg have been deprecating in drivers-core-next.
  Thankfully Greg reverted the patch that removes the old API so this
  merge can happen cleanly, but once merged, I will send a patch
  adjusting our new code to the new API so that Greg can send you the
  removal patch.

  Now as for the content of this branch, we have a lot of perf work for
  power8 new counters including support for our new "nest" counters
  (also called 24x7) under pHyp (not natively yet).

  We have new functionality when running under the OPAL firmware
  (non-virtualized or KVM host), such as access to the firmware error
  logs and service processor dumps, system parameters and sensors, along
  with a hwmon driver for the latter.

  There's also a bunch of bug fixes accross the board, some LE fixes,
  and a nice set of selftests for validating our various types of copy
  loops.

  On the Freescale side, we see mostly new chip/board revisions, some
  clock updates, better support for machine checks and debug exceptions,
  etc..."

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (70 commits)
  powerpc/book3s: Fix CFAR clobbering issue in machine check handler.
  powerpc/compat: 32-bit little endian machine name is ppcle, not ppc
  powerpc/le: Big endian arguments for ppc_rtas()
  powerpc: Use default set of netfilter modules (CONFIG_NETFILTER_ADVANCED=n)
  powerpc/defconfigs: Enable THP in pseries defconfig
  powerpc/mm: Make sure a local_irq_disable prevent a parallel THP split
  powerpc: Rate-limit users spamming kernel log buffer
  powerpc/perf: Fix handling of L3 events with bank == 1
  powerpc/perf/hv_{gpci, 24x7}: Add documentation of device attributes
  powerpc/perf: Add kconfig option for hypervisor provided counters
  powerpc/perf: Add support for the hv 24x7 interface
  powerpc/perf: Add support for the hv gpci (get performance counter info) interface
  powerpc/perf: Add macros for defining event fields & formats
  powerpc/perf: Add a shared interface to get gpci version and capabilities
  powerpc/perf: Add 24x7 interface headers
  powerpc/perf: Add hv_gpci interface header
  powerpc: Add hvcalls for 24x7 and gpci (Get Performance Counter Info)
  sysfs: create bin_attributes under the requested group
  powerpc/perf: Enable BHRB access for EBB events
  powerpc/perf: Add BHRB constraint and IFM MMCRA handling for EBB
  ...
2014-04-02 13:42:59 -07:00
Al Viro 4597e695b8 get rid of DEBUG_WRITECOUNT
it only makes control flow in __fput() and friends more convoluted.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-04-01 23:19:12 -04:00
Linus Torvalds 3e75c6de1a USB patches for 3.15-rc1
Here's the big USB pull request for 3.15-rc1.
 
 The normal set of patches, lots of controller driver updates, and a
 smattering of individual USB driver updates as well.
 
 All have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB patches from Greg KH:
 "Here's the big USB pull request for 3.15-rc1.

  The normal set of patches, lots of controller driver updates, and a
  smattering of individual USB driver updates as well.

  All have been in linux-next for a while"

* tag 'usb-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (249 commits)
  xhci: Transition maintainership to Mathias Nyman.
  USB: disable reset-resume when USB_QUIRK_RESET is set
  USB: unbind all interfaces before rebinding any
  usb: phy: Add ulpi IDs for SMSC USB3320 and TI TUSB1210
  usb: gadget: tcm_usb_gadget: stop format strings
  usb: gadget: f_fs: add missing spinlock and mutex unlock
  usb: gadget: composite: switch over to ERR_CAST()
  usb: gadget: inode: switch over to memdup_user()
  usb: gadget: f_subset: switch over to PTR_RET
  usb: gadget: lpc32xx_udc: fix wrong clk_put() sequence
  USB: keyspan: remove dead debugging code
  USB: serial: add missing newlines to dev_<level> messages.
  USB: serial: add missing braces
  USB: serial: continue to write on errors
  USB: serial: continue to read on errors
  USB: serial: make bulk_out_size a lower limit
  USB: cypress_m8: fix potential scheduling while atomic
  devicetree: bindings: document lsi,zevio-usb
  usb: chipidea: add support for USB OTG controller on LSI Zevio SoCs
  usb: chipidea: imx: Use dev_name() for ci_hdrc name to distinguish USBs
  ...
2014-04-01 17:06:09 -07:00
Linus Torvalds 675c354a95 Char/Misc driver patches for 3.15-rc1
Here's the big char/misc driver updates for 3.15-rc1.
 
 Lots of various things here, including the new mcb driver subsystem.
 
 All of these have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver patches from Greg KH:
 "Here's the big char/misc driver updates for 3.15-rc1.

  Lots of various things here, including the new mcb driver subsystem.

  All of these have been in linux-next for a while"

* tag 'char-misc-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (118 commits)
  extcon: Move OF helper function to extcon core and change function name
  extcon: of: Remove unnecessary function call by using the name of device_node
  extcon: gpio: Use SIMPLE_DEV_PM_OPS macro
  extcon: palmas: Use SIMPLE_DEV_PM_OPS macro
  mei: don't use deprecated DEFINE_PCI_DEVICE_TABLE macro
  mei: amthif: fix checkpatch error
  mei: client.h fix checkpatch errors
  mei: use cl_dbg where appropriate
  mei: fix Unnecessary space after function pointer name
  mei: report consistently copy_from/to_user failures
  mei: drop pr_fmt macros
  mei: make me hw headers private to me hw.
  mei: fix memory leak of pending write cb objects
  mei: me: do not reset when less than expected data is received
  drivers: mcb: Fix build error discovered by 0-day bot
  cs5535-mfgpt: Simplify dependencies
  spmi: pm: drop bus-level PM suspend/resume routines
  spmi: pmic_arb: make selectable on ARCH_QCOM
  Drivers: hv: vmbus: Increase the limit on the number of pfns we can handle
  pch_phub: Report error writing MAC back to user
  ...
2014-04-01 16:13:21 -07:00
Linus Torvalds 4b1779c2cf PCI changes for the v3.15 merge window:
Enumeration
     - Increment max correctly in pci_scan_bridge() (Andreas Noever)
     - Clarify the "scan anyway" comment in pci_scan_bridge() (Andreas Noever)
     - Assign CardBus bus number only during the second pass (Andreas Noever)
     - Use request_resource_conflict() instead of insert_ for bus numbers (Andreas Noever)
     - Make sure bus number resources stay within their parents bounds (Andreas Noever)
     - Remove pci_fixup_parent_subordinate_busnr() (Andreas Noever)
     - Check for child busses which use more bus numbers than allocated (Andreas Noever)
     - Don't scan random busses in pci_scan_bridge() (Andreas Noever)
     - x86: Drop pcibios_scan_root() check for bus already scanned (Bjorn Helgaas)
     - x86: Use pcibios_scan_root() instead of pci_scan_bus_with_sysdata() (Bjorn Helgaas)
     - x86: Use pcibios_scan_root() instead of pci_scan_bus_on_node() (Bjorn Helgaas)
     - x86: Merge pci_scan_bus_on_node() into pcibios_scan_root() (Bjorn Helgaas)
     - x86: Drop return value of pcibios_scan_root() (Bjorn Helgaas)
 
   NUMA
     - x86: Add x86_pci_root_bus_node() to look up NUMA node from PCI bus (Bjorn Helgaas)
     - x86: Use x86_pci_root_bus_node() instead of get_mp_bus_to_node() (Bjorn Helgaas)
     - x86: Remove mp_bus_to_node[], set_mp_bus_to_node(), get_mp_bus_to_node() (Bjorn Helgaas)
     - x86: Use NUMA_NO_NODE, not -1, for unknown node (Bjorn Helgaas)
     - x86: Remove acpi_get_pxm() usage (Bjorn Helgaas)
     - ia64: Use NUMA_NO_NODE, not MAX_NUMNODES, for unknown node (Bjorn Helgaas)
     - ia64: Remove acpi_get_pxm() usage (Bjorn Helgaas)
     - ACPI: Fix acpi_get_node() prototype (Bjorn Helgaas)
 
   Resource management
     - i2o: Fix and refactor PCI space allocation (Bjorn Helgaas)
     - Add resource_contains() (Bjorn Helgaas)
     - Add %pR support for IORESOURCE_UNSET (Bjorn Helgaas)
     - Mark resources as IORESOURCE_UNSET if we can't assign them (Bjorn Helgaas)
     - Don't clear IORESOURCE_UNSET when updating BAR (Bjorn Helgaas)
     - Check IORESOURCE_UNSET before updating BAR (Bjorn Helgaas)
     - Don't try to claim IORESOURCE_UNSET resources (Bjorn Helgaas)
     - Mark 64-bit resource as IORESOURCE_UNSET if we only support 32-bit (Bjorn Helgaas)
     - Don't enable decoding if BAR hasn't been assigned an address (Bjorn Helgaas)
     - Add "weak" generic pcibios_enable_device() implementation (Bjorn Helgaas)
     - alpha, microblaze, sh, sparc, tile: Use default pcibios_enable_device() (Bjorn Helgaas)
     - s390: Use generic pci_enable_resources() (Bjorn Helgaas)
     - Don't check resource_size() in pci_bus_alloc_resource() (Bjorn Helgaas)
     - Set type in __request_region() (Bjorn Helgaas)
     - Check all IORESOURCE_TYPE_BITS in pci_bus_alloc_from_region() (Bjorn Helgaas)
     - Change pci_bus_alloc_resource() type_mask to unsigned long (Bjorn Helgaas)
     - Log IDE resource quirk in dmesg (Bjorn Helgaas)
     - Revert "[PATCH] Insert GART region into resource map" (Bjorn Helgaas)
 
   PCI device hotplug
     - Make check_link_active() non-static (Rajat Jain)
     - Use link change notifications for hot-plug and removal (Rajat Jain)
     - Enable link state change notifications (Rajat Jain)
     - Don't disable the link permanently during removal (Rajat Jain)
     - Don't check adapter or latch status while disabling (Rajat Jain)
     - Disable link notification across slot reset (Rajat Jain)
     - Ensure very fast hotplug events are also processed (Rajat Jain)
     - Add hotplug_lock to serialize hotplug events (Rajat Jain)
     - Remove a non-existent card, regardless of "surprise" capability (Rajat Jain)
     - Don't turn slot off when hot-added device already exists (Yijing Wang)
 
   MSI
     - Keep pci_enable_msi() documentation (Alexander Gordeev)
     - ahci: Fix broken single MSI fallback (Alexander Gordeev)
     - ahci, vfio: Use pci_enable_msi_range() (Alexander Gordeev)
     - Check kmalloc() return value, fix leak of name (Greg Kroah-Hartman)
     - Fix leak of msi_attrs (Greg Kroah-Hartman)
     - Fix pci_msix_vec_count() htmldocs failure (Masanari Iida)
 
   Virtualization
     - Device-specific ACS support (Alex Williamson)
 
   Freescale i.MX6
     - Wait for retraining (Marek Vasut)
 
   Marvell MVEBU
     - Use Device ID and revision from underlying endpoint (Andrew Lunn)
     - Fix incorrect size for PCI aperture resources (Jason Gunthorpe)
     - Call request_resource() on the apertures (Jason Gunthorpe)
     - Fix potential issue in range parsing (Jean-Jacques Hiblot)
 
   Renesas R-Car
     - Check platform_get_irq() return code (Ben Dooks)
     - Add error interrupt handling (Ben Dooks)
     - Fix bridge logic configuration accesses (Ben Dooks)
     - Register each instance independently (Magnus Damm)
     - Break out window size handling (Magnus Damm)
     - Make the Kconfig dependencies more generic (Magnus Damm)
 
   Synopsys DesignWare
     - Fix RC BAR to be single 64-bit non-prefetchable memory (Mohit Kumar)
 
   Miscellaneous
     - Remove unused SR-IOV VF Migration support (Bjorn Helgaas)
     - Enable INTx if BIOS left them disabled (Bjorn Helgaas)
     - Fix hex vs decimal typo in cpqhpc_probe() (Dan Carpenter)
     - Clean up par-arch object file list (Liviu Dudau)
     - Set IORESOURCE_ROM_SHADOW only for the default VGA device (Sander Eikelenboom)
     - ACPI, ARM, drm, powerpc, pcmcia, PCI: Use list_for_each_entry() for bus traversal (Yijing Wang)
     - Fix pci_bus_b() build failure (Paul Gortmaker)
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Merge tag 'pci-v3.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI changes from Bjorn Helgaas:
 "Enumeration
   - Increment max correctly in pci_scan_bridge() (Andreas Noever)
   - Clarify the "scan anyway" comment in pci_scan_bridge() (Andreas Noever)
   - Assign CardBus bus number only during the second pass (Andreas Noever)
   - Use request_resource_conflict() instead of insert_ for bus numbers (Andreas Noever)
   - Make sure bus number resources stay within their parents bounds (Andreas Noever)
   - Remove pci_fixup_parent_subordinate_busnr() (Andreas Noever)
   - Check for child busses which use more bus numbers than allocated (Andreas Noever)
   - Don't scan random busses in pci_scan_bridge() (Andreas Noever)
   - x86: Drop pcibios_scan_root() check for bus already scanned (Bjorn Helgaas)
   - x86: Use pcibios_scan_root() instead of pci_scan_bus_with_sysdata() (Bjorn Helgaas)
   - x86: Use pcibios_scan_root() instead of pci_scan_bus_on_node() (Bjorn Helgaas)
   - x86: Merge pci_scan_bus_on_node() into pcibios_scan_root() (Bjorn Helgaas)
   - x86: Drop return value of pcibios_scan_root() (Bjorn Helgaas)

  NUMA
   - x86: Add x86_pci_root_bus_node() to look up NUMA node from PCI bus (Bjorn Helgaas)
   - x86: Use x86_pci_root_bus_node() instead of get_mp_bus_to_node() (Bjorn Helgaas)
   - x86: Remove mp_bus_to_node[], set_mp_bus_to_node(), get_mp_bus_to_node() (Bjorn Helgaas)
   - x86: Use NUMA_NO_NODE, not -1, for unknown node (Bjorn Helgaas)
   - x86: Remove acpi_get_pxm() usage (Bjorn Helgaas)
   - ia64: Use NUMA_NO_NODE, not MAX_NUMNODES, for unknown node (Bjorn Helgaas)
   - ia64: Remove acpi_get_pxm() usage (Bjorn Helgaas)
   - ACPI: Fix acpi_get_node() prototype (Bjorn Helgaas)

  Resource management
   - i2o: Fix and refactor PCI space allocation (Bjorn Helgaas)
   - Add resource_contains() (Bjorn Helgaas)
   - Add %pR support for IORESOURCE_UNSET (Bjorn Helgaas)
   - Mark resources as IORESOURCE_UNSET if we can't assign them (Bjorn Helgaas)
   - Don't clear IORESOURCE_UNSET when updating BAR (Bjorn Helgaas)
   - Check IORESOURCE_UNSET before updating BAR (Bjorn Helgaas)
   - Don't try to claim IORESOURCE_UNSET resources (Bjorn Helgaas)
   - Mark 64-bit resource as IORESOURCE_UNSET if we only support 32-bit (Bjorn Helgaas)
   - Don't enable decoding if BAR hasn't been assigned an address (Bjorn Helgaas)
   - Add "weak" generic pcibios_enable_device() implementation (Bjorn Helgaas)
   - alpha, microblaze, sh, sparc, tile: Use default pcibios_enable_device() (Bjorn Helgaas)
   - s390: Use generic pci_enable_resources() (Bjorn Helgaas)
   - Don't check resource_size() in pci_bus_alloc_resource() (Bjorn Helgaas)
   - Set type in __request_region() (Bjorn Helgaas)
   - Check all IORESOURCE_TYPE_BITS in pci_bus_alloc_from_region() (Bjorn Helgaas)
   - Change pci_bus_alloc_resource() type_mask to unsigned long (Bjorn Helgaas)
   - Log IDE resource quirk in dmesg (Bjorn Helgaas)
   - Revert "[PATCH] Insert GART region into resource map" (Bjorn Helgaas)

  PCI device hotplug
   - Make check_link_active() non-static (Rajat Jain)
   - Use link change notifications for hot-plug and removal (Rajat Jain)
   - Enable link state change notifications (Rajat Jain)
   - Don't disable the link permanently during removal (Rajat Jain)
   - Don't check adapter or latch status while disabling (Rajat Jain)
   - Disable link notification across slot reset (Rajat Jain)
   - Ensure very fast hotplug events are also processed (Rajat Jain)
   - Add hotplug_lock to serialize hotplug events (Rajat Jain)
   - Remove a non-existent card, regardless of "surprise" capability (Rajat Jain)
   - Don't turn slot off when hot-added device already exists (Yijing Wang)

  MSI
   - Keep pci_enable_msi() documentation (Alexander Gordeev)
   - ahci: Fix broken single MSI fallback (Alexander Gordeev)
   - ahci, vfio: Use pci_enable_msi_range() (Alexander Gordeev)
   - Check kmalloc() return value, fix leak of name (Greg Kroah-Hartman)
   - Fix leak of msi_attrs (Greg Kroah-Hartman)
   - Fix pci_msix_vec_count() htmldocs failure (Masanari Iida)

  Virtualization
   - Device-specific ACS support (Alex Williamson)

  Freescale i.MX6
   - Wait for retraining (Marek Vasut)

  Marvell MVEBU
   - Use Device ID and revision from underlying endpoint (Andrew Lunn)
   - Fix incorrect size for PCI aperture resources (Jason Gunthorpe)
   - Call request_resource() on the apertures (Jason Gunthorpe)
   - Fix potential issue in range parsing (Jean-Jacques Hiblot)

  Renesas R-Car
   - Check platform_get_irq() return code (Ben Dooks)
   - Add error interrupt handling (Ben Dooks)
   - Fix bridge logic configuration accesses (Ben Dooks)
   - Register each instance independently (Magnus Damm)
   - Break out window size handling (Magnus Damm)
   - Make the Kconfig dependencies more generic (Magnus Damm)

  Synopsys DesignWare
   - Fix RC BAR to be single 64-bit non-prefetchable memory (Mohit Kumar)

  Miscellaneous
   - Remove unused SR-IOV VF Migration support (Bjorn Helgaas)
   - Enable INTx if BIOS left them disabled (Bjorn Helgaas)
   - Fix hex vs decimal typo in cpqhpc_probe() (Dan Carpenter)
   - Clean up par-arch object file list (Liviu Dudau)
   - Set IORESOURCE_ROM_SHADOW only for the default VGA device (Sander Eikelenboom)
   - ACPI, ARM, drm, powerpc, pcmcia, PCI: Use list_for_each_entry() for bus traversal (Yijing Wang)
   - Fix pci_bus_b() build failure (Paul Gortmaker)"

* tag 'pci-v3.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (108 commits)
  Revert "[PATCH] Insert GART region into resource map"
  PCI: Log IDE resource quirk in dmesg
  PCI: Change pci_bus_alloc_resource() type_mask to unsigned long
  PCI: Check all IORESOURCE_TYPE_BITS in pci_bus_alloc_from_region()
  resources: Set type in __request_region()
  PCI: Don't check resource_size() in pci_bus_alloc_resource()
  s390/PCI: Use generic pci_enable_resources()
  tile PCI RC: Use default pcibios_enable_device()
  sparc/PCI: Use default pcibios_enable_device() (Leon only)
  sh/PCI: Use default pcibios_enable_device()
  microblaze/PCI: Use default pcibios_enable_device()
  alpha/PCI: Use default pcibios_enable_device()
  PCI: Add "weak" generic pcibios_enable_device() implementation
  PCI: Don't enable decoding if BAR hasn't been assigned an address
  PCI: Enable INTx in pci_reenable_device() only when MSI/MSI-X not enabled
  PCI: Mark 64-bit resource as IORESOURCE_UNSET if we only support 32-bit
  PCI: Don't try to claim IORESOURCE_UNSET resources
  PCI: Check IORESOURCE_UNSET before updating BAR
  PCI: Don't clear IORESOURCE_UNSET when updating BAR
  PCI: Mark resources as IORESOURCE_UNSET if we can't assign them
  ...

Conflicts:
	arch/x86/include/asm/topology.h
	drivers/ata/ahci.c
2014-04-01 15:14:04 -07:00