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Merge tag 'v4.15-rc6' into patchwork
Linux 4.15-rc6
* tag 'v4.15-rc6': (734 commits)
Linux 4.15-rc6
MAINTAINERS: mark arch/blackfin/ and its gubbins as orphaned
x86/ldt: Make LDT pgtable free conditional
x86/ldt: Plug memory leak in error path
x86/mm: Remove preempt_disable/enable() from __native_flush_tlb()
x86/smpboot: Remove stale TLB flush invocations
objtool: Fix seg fault with clang-compiled objects
objtool: Fix seg fault caused by missing parameter
kbuild: add '-fno-stack-check' to kernel build options
timerqueue: Document return values of timerqueue_add/del()
timers: Invoke timer_start_debug() where it makes sense
nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick()
timers: Reinitialize per cpu bases on hotplug
timers: Use deferrable base independent of base::nohz_active
genirq/msi, x86/vector: Prevent reservation mode for non maskable MSI
genirq/irqdomain: Rename early argument of irq_domain_activate_irq()
x86/vector: Use IRQD_CAN_RESERVE flag
genirq: Introduce IRQD_CAN_RESERVE flag
genirq/msi: Handle reactivation only on success
gpio: brcmstb: Make really use of the new lockdep class
...
When kernel-doc is called with output selection filters,
it will be called lots of time for a single file. If
there is a warning present there, it means that it may
print hundreds of identical warnings.
Worse than that, the -function NAME actually filters only
functions. So, it makes no sense at all to print warnings
for structs or enums.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
It is possible to use nested structs like:
struct {
struct {
void *arg1;
} st1, st2, *st3, st4;
};
Handling it requires to split each parameter. Change the logic
to allow such definitions.
In order to test the new nested logic, the following file
was used to test
<code>
struct foo { int a; }; /* Just to avoid errors if compiled */
/**
* struct my_struct - a struct with nested unions and structs
* @arg1: first argument of anonymous union/anonymous struct
* @arg2: second argument of anonymous union/anonymous struct
* @arg1b: first argument of anonymous union/anonymous struct
* @arg2b: second argument of anonymous union/anonymous struct
* @arg3: third argument of anonymous union/anonymous struct
* @arg4: fourth argument of anonymous union/anonymous struct
* @bar.st1.arg1: first argument of struct st1 on union bar
* @bar.st1.arg2: second argument of struct st1 on union bar
* @bar.st1.bar1: bar1 at st1
* @bar.st1.bar2: bar2 at st1
* @bar.st2.arg1: first argument of struct st2 on union bar
* @bar.st2.arg2: second argument of struct st2 on union bar
* @bar.st3.arg2: second argument of struct st3 on union bar
* @f1: nested function on anonimous union/struct
* @bar.st2.f2: nested function on named union/struct
*/
struct my_struct {
/* Anonymous union/struct*/
union {
struct {
char arg1 : 1;
char arg2 : 3;
};
struct {
int arg1b;
int arg2b;
};
struct {
void *arg3;
int arg4;
int (*f1)(char foo, int bar);
};
};
union {
struct {
int arg1;
int arg2;
struct foo bar1, *bar2;
} st1; /* bar.st1 is undocumented, cause a warning */
struct {
void *arg1; /* bar.st3.arg1 is undocumented, cause a warning */
int arg2;
int (*f2)(char foo, int bar); /* bar.st3.fn2 is undocumented, cause a warning */
} st2, st3, *st4;
int (*f3)(char foo, int bar); /* f3 is undocumented, cause a warning */
} bar; /* bar is undocumented, cause a warning */
/* private: */
int undoc_privat; /* is undocumented but private, no warning */
/* public: */
int undoc_public; /* is undocumented, cause a warning */
};
</code>
It produces the following warnings, as expected:
test2.h:57: warning: Function parameter or member 'bar' not described in 'my_struct'
test2.h:57: warning: Function parameter or member 'bar.st1' not described in 'my_struct'
test2.h:57: warning: Function parameter or member 'bar.st2' not described in 'my_struct'
test2.h:57: warning: Function parameter or member 'bar.st3' not described in 'my_struct'
test2.h:57: warning: Function parameter or member 'bar.st3.arg1' not described in 'my_struct'
test2.h:57: warning: Function parameter or member 'bar.st3.f2' not described in 'my_struct'
test2.h:57: warning: Function parameter or member 'bar.st4' not described in 'my_struct'
test2.h:57: warning: Function parameter or member 'bar.st4.arg1' not described in 'my_struct'
test2.h:57: warning: Function parameter or member 'bar.st4.arg2' not described in 'my_struct'
test2.h:57: warning: Function parameter or member 'bar.st4.f2' not described in 'my_struct'
test2.h:57: warning: Function parameter or member 'bar.f3' not described in 'my_struct'
test2.h:57: warning: Function parameter or member 'undoc_public' not described in 'my_struct'
Suggested-by: Markus Heiser <markus.heiser@darmarit.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Function arguments are different than usual ones. So, an
special logic is needed in order to handle such arguments
on nested structs.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The logic at create_parameterlist()'s ancillary push_parameter()
function has already a way to output the declaration name, with
would help to discover what declaration is missing.
However, currently, the logic is utterly broken, as it uses
the var $type with a wrong meaning. With the current code,
it will never print anything. I suspect that originally
it was using the second argument of output_declaration().
I opted to not rely on a globally defined $declaration_name,
but, instead, to pass it explicitly as a parameter.
While here, I removed a unaligned check for !$anon_struct_union.
This is not needed, as, if $anon_struct_union is not zero,
$parameterdescs{$param} will be defined.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The check_sections() function has a $nested parameter, meant
to identify when a nested struct is present. As we now have
a logic that handles it, get rid of such parameter.
Suggested-by: Markus Heiser <markus.heiser@darmarit.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
There are several places within the Kernel tree with nested
structs/unions, like this one:
struct ingenic_cgu_clk_info {
const char *name;
enum {
CGU_CLK_NONE = 0,
CGU_CLK_EXT = BIT(0),
CGU_CLK_PLL = BIT(1),
CGU_CLK_GATE = BIT(2),
CGU_CLK_MUX = BIT(3),
CGU_CLK_MUX_GLITCHFREE = BIT(4),
CGU_CLK_DIV = BIT(5),
CGU_CLK_FIXDIV = BIT(6),
CGU_CLK_CUSTOM = BIT(7),
} type;
int parents[4];
union {
struct ingenic_cgu_pll_info pll;
struct {
struct ingenic_cgu_gate_info gate;
struct ingenic_cgu_mux_info mux;
struct ingenic_cgu_div_info div;
struct ingenic_cgu_fixdiv_info fixdiv;
};
struct ingenic_cgu_custom_info custom;
};
};
Currently, such struct is documented as:
**Definition**
::
struct ingenic_cgu_clk_info {
const char * name;
};
**Members**
``name``
name of the clock
With is obvioulsy wrong. It also generates an error:
drivers/clk/ingenic/cgu.h:169: warning: No description found for parameter 'enum'
However, there's nothing wrong with this kernel-doc markup: everything
is documented there.
It makes sense to document all fields there. So, add a
way for the core to parse those structs.
With this patch, all documented fields will properly generate
documentation.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Sphinx has a hard time dealing with tabs, causing it to
misinterpret paragraph continuation.
As we're now mainly focused on supporting ReST output,
replace tabs by spaces, in order to avoid troubles when
the output is parsed by Sphinx.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Right now, if kernel-doc is called without arguments, it
defaults to man pages. IMO, it makes more sense to
default to ReST, as this is the output that it is most
used nowadays, and it easier to check if everything got
parsed fine on an enriched text mode format.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Right now, if one uses "--rst" instead of "-rst", it just
ignore the argument and produces a man page. Change the
logic to accept both "-cmd" and "--cmd". Also, if
"cmd" doesn't exist, print the usage information and exit.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Since there isn't any docbook code anymore upstream,
we can get rid of several output formats:
- docbook/xml, html, html5 and list formats were used by
the old build system;
- As ReST is text, there's not much sense on outputting
on a different text format.
After this patch, only man and rst output formats are
supported.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Everything there is already described at
Documentation/doc-guide/kernel-doc.rst. So, there's no reason why
to keep it anymore.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Pull locking fixes from Ingo Molnar:
"Misc fixes:
- Fix a S390 boot hang that was caused by the lock-break logic.
Remove lock-break to begin with, as review suggested it was
unreasonably fragile and our confidence in its continued good
health is lower than our confidence in its removal.
- Remove the lockdep cross-release checking code for now, because of
unresolved false positive warnings. This should make lockdep work
well everywhere again.
- Get rid of the final (and single) ACCESS_ONCE() straggler and
remove the API from v4.15.
- Fix a liblockdep build warning"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tools/lib/lockdep: Add missing declaration of 'pr_cont()'
checkpatch: Remove ACCESS_ONCE() warning
compiler.h: Remove ACCESS_ONCE()
tools/include: Remove ACCESS_ONCE()
tools/perf: Convert ACCESS_ONCE() to READ_ONCE()
locking/lockdep: Remove the cross-release locking checks
locking/core: Remove break_lock field when CONFIG_GENERIC_LOCKBREAK=y
locking/core: Fix deadlock during boot on systems with GENERIC_LOCKBREAK
faddr2line hit var unbound error when CROSS_COMPILE isn't set since
nounset option is set in bash script.
Link: http://lkml.kernel.org/r/20171206013022.GA83929@sofia
Fixes: 95a8798254 ("scripts/faddr2line: extend usage on generic arch")
Signed-off-by: Liu Changcheng <changcheng.liu@intel.com>
Reported-by: Richard Weinberger <richard.weinberger@gmail.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: NeilBrown <neilb@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Now that ACCESS_ONCE() has been excised from the kernel, any uses will
result in a build error, and we no longer need to whine about it in
checkpatch.
This patch removes the newly redundant warning.
Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: acme@redhat.com
Link: http://lkml.kernel.org/r/20171127103824.36526-5-mark.rutland@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
On media, we now have an struct declared with:
struct lirc_fh {
struct list_head list;
struct rc_dev *rc;
int carrier_low;
bool send_timeout_reports;
DECLARE_KFIFO_PTR(rawir, unsigned int);
DECLARE_KFIFO_PTR(scancodes, struct lirc_scancode);
wait_queue_head_t wait_poll;
u8 send_mode;
u8 rec_mode;
};
gpiolib.c has a similar declaration with DECLARE_KFIFO().
Currently, those produce the following error:
./include/media/rc-core.h:96: warning: No description found for parameter 'int'
./include/media/rc-core.h:96: warning: No description found for parameter 'lirc_scancode'
./include/media/rc-core.h:96: warning: Excess struct member 'rawir' description in 'lirc_fh'
./include/media/rc-core.h:96: warning: Excess struct member 'scancodes' description in 'lirc_fh'
../drivers/gpio/gpiolib.c:601: warning: No description found for parameter '16'
../drivers/gpio/gpiolib.c:601: warning: Excess struct member 'events' description in 'lineevent_state'
So, teach kernel-doc how to parse DECLARE_KFIFO() and DECLARE_KFIFO_PTR().
While here, relax at the past DECLARE_foo() macros, accepting a random
number of spaces after comma.
The addition of DECLARE_KFIFO() was
Suggested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
a problem with the new warning mode: it can break the build when confronted
with a source file containing malformed kerneldoc comments.
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Merge tag 'docs-4.15-fixes' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"A handful of documentation fixes.
The most significant of these addresses a problem with the new warning
mode: it can break the build when confronted with a source file
containing malformed kerneldoc comments"
* tag 'docs-4.15-fixes' of git://git.lwn.net/linux:
Documentation: fix docs build error after source file removed
scsi: documentation: Fix case of 'scsi_device' struct mention(s)
genericirq.rst: Remove :c:func:`...` in code blocks
dmaengine: doc : Fix warning "Title underline too short" while make xmldocs
scripts/kernel-doc: Don't fail with status != 0 if error encountered with -none
My bisect scripts starting running into build failures when trying to
compile 4.15-rc1 with the builds failing with things like:
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:2078: error: Cannot parse struct or union!
The line in question is actually just a #define, but after some digging
it turns out that my scripts pass W=1 and since commit 3a025e1d1c
("Add optional check for bad kernel-doc comments") that results in
kernel-doc running on each source file. The file in question has a
badly formatted comment immediately before the #define:
/**
* struct brcmf_skbuff_cb reserves first two bytes in sk_buff::cb for
* bus layer usage.
*/
which causes the regex in dump_struct to fail (lack of braces following
struct declaration) and kernel-doc returns 1, which causes the build
to fail.
Fix the issue by always returning 0 from kernel-doc when invoked with
-none. It successfully generates no documentation, and prints out any
issues.
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mergr misc fixes from Andrew Morton:
"28 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (28 commits)
fs/hugetlbfs/inode.c: change put_page/unlock_page order in hugetlbfs_fallocate()
mm/hugetlb: fix NULL-pointer dereference on 5-level paging machine
autofs: revert "autofs: fix AT_NO_AUTOMOUNT not being honored"
autofs: revert "autofs: take more care to not update last_used on path walk"
fs/fat/inode.c: fix sb_rdonly() change
mm, memcg: fix mem_cgroup_swapout() for THPs
mm: migrate: fix an incorrect call of prep_transhuge_page()
kmemleak: add scheduling point to kmemleak_scan()
scripts/bloat-o-meter: don't fail with division by 0
fs/mbcache.c: make count_objects() more robust
Revert "mm/page-writeback.c: print a warning if the vm dirtiness settings are illogical"
mm/madvise.c: fix madvise() infinite loop under special circumstances
exec: avoid RLIMIT_STACK races with prlimit()
IB/core: disable memory registration of filesystem-dax vmas
v4l2: disable filesystem-dax mapping support
mm: fail get_vaddr_frames() for filesystem-dax mappings
mm: introduce get_user_pages_longterm
device-dax: implement ->split() to catch invalid munmap attempts
mm, hugetlbfs: introduce ->split() to vm_operations_struct
scripts/faddr2line: extend usage on generic arch
...
Under some circumstances it's possible to get a divider 0 which crashes
the script.
Traceback (most recent call last):
File "linux/scripts/bloat-o-meter", line 98, in <module>
print_result("Function", "tTdDbBrR", 2)
File "linux/scripts/bloat-o-meter", line 87, in print_result
(otot, ntot, (ntot - otot)*100.0/otot))
ZeroDivisionError: float division by zero
Hide this by checking the divider first.
Link: http://lkml.kernel.org/r/20171123171219.31453-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Vaneet Narang <v.narang@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When cross-compiling, fadd2line should use the binary tool used for the
target system, rather than that of the host.
Link: http://lkml.kernel.org/r/20171121092911.GA150711@sofia
Signed-off-by: Liu Changcheng <changcheng.liu@intel.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: NeilBrown <neilb@suse.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
printk specifier %p now hashes all addresses before printing. Sometimes
we need to see the actual unmodified address. This can be achieved using
%lx but then we face the risk that if in future we want to change the
way the Kernel handles printing of pointers we will have to grep through
the already existent 50 000 %lx call sites. Let's add specifier %px as a
clear, opt-in, way to print a pointer and maintain some level of
isolation from all the other hex integer output within the Kernel.
Add printk specifier %px to print the actual unmodified address.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Pull timer updates from Thomas Gleixner:
- The final conversion of timer wheel timers to timer_setup().
A few manual conversions and a large coccinelle assisted sweep and
the removal of the old initialization mechanisms and the related
code.
- Remove the now unused VSYSCALL update code
- Fix permissions of /proc/timer_list. I still need to get rid of that
file completely
- Rename a misnomed clocksource function and remove a stale declaration
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
m68k/macboing: Fix missed timer callback assignment
treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts
timer: Remove redundant __setup_timer*() macros
timer: Pass function down to initialization routines
timer: Remove unused data arguments from macros
timer: Switch callback prototype to take struct timer_list * argument
timer: Pass timer_list pointer to callbacks unconditionally
Coccinelle: Remove setup_timer.cocci
timer: Remove setup_*timer() interface
timer: Remove init_timer() interface
treewide: setup_timer() -> timer_setup() (2 field)
treewide: setup_timer() -> timer_setup()
treewide: init_timer() -> setup_timer()
treewide: Switch DEFINE_TIMER callbacks to struct timer_list *
s390: cmm: Convert timers to use timer_setup()
lightnvm: Convert timers to use timer_setup()
drivers/net: cris: Convert timers to use timer_setup()
drm/vc4: Convert timers to use timer_setup()
block/laptop_mode: Convert timers to use timer_setup()
net/atm/mpc: Avoid open-coded assignment of timer callback function
...
- Use pwd instead of /bin/pwd for portability
- Clean up Makefiles
- Fix ld-option for clang
- Fix malloc'ed data size in Kconfig
- Fix parallel building along with coccicheck
- Fix a minor issue of package building
- Prompt to use "rpm-pkg" instead of "rpm"
- Clean up *.i and *.lst patterns by "make clean"
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Merge tag 'kbuild-v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild updates from Masahiro Yamada:
- use 'pwd' instead of '/bin/pwd' for portability
- clean up Makefiles
- fix ld-option for clang
- fix malloc'ed data size in Kconfig
- fix parallel building along with coccicheck
- fix a minor issue of package building
- prompt to use "rpm-pkg" instead of "rpm"
- clean up *.i and *.lst patterns by "make clean"
* tag 'kbuild-v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: drop $(extra-y) from real-objs-y
kbuild: clean up *.i and *.lst patterns by make clean
kbuild: rpm: prompt to use "rpm-pkg" if "rpm" target is used
kbuild: pkg: use --transform option to prefix paths in tar
coccinelle: fix parallel build with CHECK=scripts/coccicheck
kconfig/symbol.c: use correct pointer type argument for sizeof
kbuild: Set KBUILD_CFLAGS before incl. arch Makefile
kbuild: remove all dummy assignments to obj-
kbuild: create built-in.o automatically if parent directory wants it
kbuild: /bin/pwd -> pwd
a new "Co-Developed-by" tag described by Greg, and a build enhancement from
Willy to generate docs warnings during a kernel build (but only when
additional warnings have been requested in general).
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Merge tag 'docs-4.15-2' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"A few late-arriving docs updates that have no real reason to wait.
There's a new "Co-Developed-by" tag described by Greg, and a build
enhancement from Willy to generate docs warnings during a kernel build
(but only when additional warnings have been requested in general)"
* tag 'docs-4.15-2' of git://git.lwn.net/linux:
Add optional check for bad kernel-doc comments
Documentation: fix profile= options in kernel-parameters.txt
documentation/svga.txt: update outdated file
kokr/memory-barriers.txt: Fix typo in paring example
kokr/memory-barriers/txt: Replace uses of "transitive"
Documentation/process: add Co-Developed-by: tag for patches with multiple authors
$(real-objs-y) in only used in scripts/Makefile.build to form
"targets", but $(extra-y) is added to "targets" in another line.
We do not need to add $(extra-y) twice.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The "rpm" has been kept for backward compatibility since pre-git era.
I am planning to remove it after the Linux 4.18 release. Annouce the
end of the support, prompting to use "rpm-pkg" instead.
If you use "rpm", it will work like "rpm-pkg", but warning messages
will be displayed as follows:
WARNING: "rpm" target will be removed after Linux 4.18
Please use "rpm-pkg" instead.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
For rpm-pkg and deb-pkg, a source tar file is created. All paths in
the archive must be prefixed with the base name of the tar so that
everything is contained in the directory when you extract it.
Currently, scripts/package/Makefile uses a symlink for that, and
removes it after the tar is created.
If you terminate the build during the tar creation, the symlink is
left over. Then, at the next package build, you will see a warning
like follows:
ln: '.' and 'kernel-4.14.0+/.' are the same file
It is possible to fix it by adding -n (--no-dereference) option to
the "ln" command, but a cleaner way is to use --transform option
of "tar" command. This option is GNU extension, but it should not
hurt to use it in the Linux build system.
The 'S' flag is needed to exclude symlinks from the path fixup.
Without it, symlinks in the kernel are broken.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The command "make -j8 C=1 CHECK=scripts/coccicheck" produces
lots of "coccicheck failed" error messages.
Julia Lawall explained the Coccinelle behavior as follows:
"The problem on the Coccinelle side is that it uses a subdirectory
with the name of the semantic patch to store standard output and
standard error for the different threads. I didn't want to use a
name with the pid, so that one could easily find this information
while Coccinelle is running. Normally the subdirectory is cleaned
up when Coccinelle completes, so there is only one of them at a time.
Maybe it is best to just add the pid. There is the risk that these
subdirectories will accumulate if Coccinelle crashes in a way such
that they don't get cleaned up, but Coccinelle could print a warning
if it detects this case, rather than failing."
When scripts/coccicheck is used as CHECK tool and -j option is given
to Make, the whole of build process runs in parallel. So, multiple
processes try to get access to the same subdirectory.
I notice spatch creates the subdirectory only when it runs in parallel
(i.e. --jobs <N> is given and <N> is greater than 1).
Setting NPROC=1 is a reasonable solution; spatch does not create the
subdirectory. Besides, ONLINE=1 mode takes a single file input for
each spatch invocation, so there is no reason to parallelize it in
the first place.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Julia Lawall <Julia.Lawall@lip6.fr>
sym_arr is of type struct symbol **.
So in malloc we need sizeof(struct symbol *).
The problem was indicated by coccinelle.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Both the init_timer() and timer_setup() APIs have been removed. This
script will not be needed any more.
Signed-off-by: Kees Cook <keescook@chromium.org>
Implement a '-none' output mode for kernel-doc which will only output
warning messages, and suppresses the warning message about there being
no kernel-doc in the file.
If the build has requested additional warnings, automatically check all
.c files. This patch does not check .h files. Enabling the warning
by default would add about 1300 warnings, so it's default off for now.
People who care can use this to check they didn't break the docs and
maybe we'll get all the warnings fixed and be able to enable this check
by default in the future.
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
"obj-y += foo/" syntax requires Kbuild to visit the "foo" subdirectory
and link built-in.o from that directory. This means foo/Makefile is
responsible for creating built-in.o even if there is no object to
link (in this case, built-in.o is an empty archive).
We have had several fixups like commit 4b024242e8 ("kbuild: Fix
linking error built-in.o no such file or directory"), then ended up
with a complex condition as follows:
ifneq ($(strip $(obj-y) $(obj-m) $(obj-) $(subdir-m) $(lib-target)),)
builtin-target := $(obj)/built-in.o
endif
We still have more cases not covered by the above, so we need to add
obj- := dummy.o
in several places just for creating empty built-in.o.
A key point is, the parent Makefile knows whether built-in.o is needed
or not. If a subdirectory needs to create built-in.o, its parent can
tell the fact when descending.
If non-empty $(need-builtin) flag is passed from the parent, built-in.o
should be created. $(obj-y) should be still checked to support the
single target "%/". All of ugly tricks will go away.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
- Clean up and fix RPM package build
- Fix a warning in DEB package build
- Improve coccicheck script
- Improve some semantic patches
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Merge tag 'kbuild-misc-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild misc updates from Masahiro Yamada:
- Clean up and fix RPM package build
- Fix a warning in DEB package build
- Improve coccicheck script
- Improve some semantic patches
* tag 'kbuild-misc-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
docs: dev-tools: coccinelle: delete out of date wiki reference
coccinelle: orplus: reorganize to improve performance
coccinelle: use exists to improve efficiency
builddeb: Pass the kernel:debarch substvar to dpkg-genchanges
Coccinelle: use false positive annotation
coccinelle: fix verbose message about .cocci file being run
coccinelle: grep Options and Requires fields more precisely
Coccinelle: make DEBUG_FILE option more useful
coccinelle: api: detect identical chip data arrays
coccinelle: Improve setup_timer.cocci matching
Coccinelle: setup_timer: improve messages from setup_timer
kbuild: rpm-pkg: do not force -jN in submake
kbuild: rpm-pkg: keep spec file until make mrproper
kbuild: rpm-pkg: fix jobserver unavailable warning
kbuild: rpm-pkg: replace $RPM_BUILD_ROOT with %{buildroot}
kbuild: rpm-pkg: fix build error when CONFIG_MODULES is disabled
kbuild: rpm-pkg: refactor mkspec with here doc
kbuild: rpm-pkg: clean up mkspec
kbuild: rpm-pkg: install vmlinux.bz2 unconditionally
kbuild: rpm-pkg: remove ppc64 specific image handling
One of the most remarkable improvements in this cycle is, Kbuild is
now able to cache the result of shell commands. Some variables are
expensive to compute, for example, $(call cc-option,...) invokes the
compiler. It is not efficient to redo this computation every time,
even when we are not actually building anything. Kbuild creates a
hidden file ".cache.mk" that contains invoked shell commands and
their results. The speed-up should be noticeable.
Summary:
- Fix arch build issues (hexagon, sh)
- Clean up various Makefiles and scripts
- Fix wrong usage of {CFLAGS,LDFLAGS}_MODULE in arch Makefiles
- Cache variables that are expensive to compute
- Improve cc-ldopton and ld-option for Clang
- Optimize output directory creation
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Merge tag 'kbuild-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
"One of the most remarkable improvements in this cycle is, Kbuild is
now able to cache the result of shell commands. Some variables are
expensive to compute, for example, $(call cc-option,...) invokes the
compiler. It is not efficient to redo this computation every time,
even when we are not actually building anything. Kbuild creates a
hidden file ".cache.mk" that contains invoked shell commands and their
results. The speed-up should be noticeable.
Summary:
- Fix arch build issues (hexagon, sh)
- Clean up various Makefiles and scripts
- Fix wrong usage of {CFLAGS,LDFLAGS}_MODULE in arch Makefiles
- Cache variables that are expensive to compute
- Improve cc-ldopton and ld-option for Clang
- Optimize output directory creation"
* tag 'kbuild-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (30 commits)
kbuild: move coccicheck help from scripts/Makefile.help to top Makefile
sh: decompressor: add shipped files to .gitignore
frv: .gitignore: ignore vmlinux.lds
selinux: remove unnecessary assignment to subdir-
kbuild: specify FORCE in Makefile.headersinst as .PHONY target
kbuild: remove redundant mkdir from ./Kbuild
kbuild: optimize object directory creation for incremental build
kbuild: create object directories simpler and faster
kbuild: filter-out PHONY targets from "targets"
kbuild: remove redundant $(wildcard ...) for cmd_files calculation
kbuild: create directory for make cache only when necessary
sh: select KBUILD_DEFCONFIG depending on ARCH
kbuild: fix linker feature test macros when cross compiling with Clang
kbuild: shrink .cache.mk when it exceeds 1000 lines
kbuild: do not call cc-option before KBUILD_CFLAGS initialization
kbuild: Cache a few more calls to the compiler
kbuild: Add a cache for generated variables
kbuild: add forward declaration of default target to Makefile.asm-generic
kbuild: remove KBUILD_SUBDIR_ASFLAGS and KBUILD_SUBDIR_CCFLAGS
hexagon/kbuild: replace CFLAGS_MODULE with KBUILD_CFLAGS_MODULE
...
The flag enables Clang instrumentation of comparison operations
(currently not supported by GCC). This instrumentation is needed by the
new KCOV device to collect comparison operands.
Link: http://lkml.kernel.org/r/20171011095459.70721-2-glider@google.com
Signed-off-by: Victor Chibotaru <tchibo@google.com>
Signed-off-by: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Alexander Popov <alex.popov@linux.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Vegard Nossum <vegard.nossum@oracle.com>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: <syzkaller@googlegroups.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
checkpatch.pl does not check missing blank line before module_*_driver.
I want it to behave likewise for builtin_*_driver.
Link: http://lkml.kernel.org/r/1505700081-12854-1-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Lines that end in an open bracket or open parenthesis are generally hard
to follow. Lines following those ending with open parenthesis are also
rarely aligned to that open parenthesis.
Suggest not ending lines with '[' or '('
Link: http://lkml.kernel.org/r/8fd0b2b4a7482064254e37931eb9302a81d5aa2f.1508340786.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Suggested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
So the line length check can be bypassed by its callers.
Link: http://lkml.kernel.org/r/7de542c08a6e79f2ebe7c1416c9f403c23fdcc09.1508282823.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Song Liu <songliubraving@fb.com>
Tested-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Some of the definitions are very long and can't be split into multiple
lines because ctags is limited.
Exempt these lines from the line length checks.
See commit 25528213fe ("tags: Fix DEFINE_PER_CPU expansions") for more
details.
Link: http://lkml.kernel.org/r/1508170320.6530.15.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There was code in checkpatch that allowed continuation printks to be
used without KERN_CONT. Remove the continuation check and always
require a KERN_<LEVEL>.
Link: http://lkml.kernel.org/r/61980ef41d5b9b6543da1c49055042e0ab74d308.1507047008.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
void foo(int a)
switch (a) {
case 'h':
fun1();
exit(1);
default:
}
creates a warning "Possible switch case/default not preceded by break or
fallthrough comment".
exit( should be treated like return.
Link: http://lkml.kernel.org/r/20170910154618.25819-1-xypron.glpk@gmx.de
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Current unnamed function definition argument does not include function
pointer cases and it reports something like:
WARNING: function definition argument 'void' should also have an identifier name
+unsigned int (*dummy)(void);
Support function pointers for unnamed function arguments
Link: http://lkml.kernel.org/r/1505389925-31087-1-git-send-email-miles.chen@mediatek.com
Signed-off-by: Miles Chen <miles.chen@mediatek.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add tests for duplicate section headers, missing section content, link and
scm reachability.
Miscellanea:
o Add --self-test=<foo> options
(a comma separated list of any of sections, patterns, links or scm)
where the default without options is all tests
o Rename check_maintainers_patterns to self_test
o Rename self_test_pattern_info to self_test_info
[tom.saeger@oracle.com: improvements]
Link: http://lkml.kernel.org/r/13e3986c374902fcf08ae947e36c5c608bbe3b79.1510075301.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Tom Saeger <tom.saeger@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add "--self-test" option to get_maintainer.pl to show potential
issues in MAINTAINERS file(s) content.
Pattern check warnings are shown for "F" and "X" patterns found in
MAINTAINERS file(s) which do not match any files known by git.
Link: http://lkml.kernel.org/r/64994f911b3510d0f4c8ac2e113501dfcec1f3c9.1509559540.git.tom.saeger@oracle.com
Signed-off-by: Tom Saeger <tom.saeger@oracle.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
parse-maintainers.pl is convenient, but currently hard-codes the
filenames that are used.
Allow user-specified filenames to simplify the use of the script.
Link: http://lkml.kernel.org/r/48703c068b3235223ffa3b2eb268fa0a125b25e0.1502251549.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In my view, it is not helpful to have a separate file just for
the coccicheck help message. Merge scripts/Makefile.help into
the top-level Makefile.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
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Merge tag 'drm-for-v4.15' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
"This is the main drm pull request for v4.15.
Core:
- Atomic object lifetime fixes
- Atomic iterator improvements
- Sparse/smatch fixes
- Legacy kms ioctls to be interruptible
- EDID override improvements
- fb/gem helper cleanups
- Simple outreachy patches
- Documentation improvements
- Fix dma-buf rcu races
- DRM mode object leasing for improving VR use cases.
- vgaarb improvements for non-x86 platforms.
New driver:
- tve200: Faraday Technology TVE200 block.
This "TV Encoder" encodes a ITU-T BT.656 stream and can be found in
the StorLink SL3516 (later Cortina Systems CS3516) as well as the
Grain Media GM8180.
New bridges:
- SiI9234 support
New panels:
- S6E63J0X03, OTM8009A, Seiko 43WVF1G, 7" rpi touch panel, Toshiba
LT089AC19000, Innolux AT043TN24
i915:
- Remove Coffeelake from alpha support
- Cannonlake workarounds
- Infoframe refactoring for DisplayPort
- VBT updates
- DisplayPort vswing/emph/buffer translation refactoring
- CCS fixes
- Restore GPU clock boost on missed vblanks
- Scatter list updates for userptr allocations
- Gen9+ transition watermarks
- Display IPC (Isochronous Priority Control)
- Private PAT management
- GVT: improved error handling and pci config sanitizing
- Execlist refactoring
- Transparent Huge Page support
- User defined priorities support
- HuC/GuC firmware refactoring
- DP MST fixes
- eDP power sequencing fixes
- Use RCU instead of stop_machine
- PSR state tracking support
- Eviction fixes
- BDW DP aux channel timeout fixes
- LSPCON fixes
- Cannonlake PLL fixes
amdgpu:
- Per VM BO support
- Powerplay cleanups
- CI powerplay support
- PASID mgr for kfd
- SR-IOV fixes
- initial GPU reset for vega10
- Prime mmap support
- TTM updates
- Clock query interface for Raven
- Fence to handle ioctl
- UVD encode ring support on Polaris
- Transparent huge page DMA support
- Compute LRU pipe tweaks
- BO flag to allow buffers to opt out of implicit sync
- CTX priority setting API
- VRAM lost infrastructure plumbing
qxl:
- fix flicker since atomic rework
amdkfd:
- Further improvements from internal AMD tree
- Usermode events
- Drop radeon support
nouveau:
- Pascal temperature sensor support
- Improved BAR2 handling
- MMU rework to support Pascal MMU
exynos:
- Improved HDMI/mixer support
- HDMI audio interface support
tegra:
- Prep work for tegra186
- Cleanup/fixes
msm:
- Preemption support for a5xx
- Display fixes for 8x96 (snapdragon 820)
- Async cursor plane fixes
- FW loading rework
- GPU debugging improvements
vc4:
- Prep for DSI panels
- fix T-format tiling scanout
- New madvise ioctl
Rockchip:
- LVDS support
omapdrm:
- omap4 HDMI CEC support
etnaviv:
- GPU performance counters groundwork
sun4i:
- refactor driver load + TCON backend
- HDMI improvements
- A31 support
- Misc fixes
udl:
- Probe/EDID read fixes.
tilcdc:
- Misc fixes.
pl111:
- Support more variants
adv7511:
- Improve EDID handling.
- HDMI CEC support
sii8620:
- Add remote control support"
* tag 'drm-for-v4.15' of git://people.freedesktop.org/~airlied/linux: (1480 commits)
drm/rockchip: analogix_dp: Use mutex rather than spinlock
drm/mode_object: fix documentation for object lookups.
drm/i915: Reorder context-close to avoid calling i915_vma_close() under RCU
drm/i915: Move init_clock_gating() back to where it was
drm/i915: Prune the reservation shared fence array
drm/i915: Idle the GPU before shinking everything
drm/i915: Lock llist_del_first() vs llist_del_all()
drm/i915: Calculate ironlake intermediate watermarks correctly, v2.
drm/i915: Disable lazy PPGTT page table optimization for vGPU
drm/i915/execlists: Remove the priority "optimisation"
drm/i915: Filter out spurious execlists context-switch interrupts
drm/amdgpu: use irq-safe lock for kiq->ring_lock
drm/amdgpu: bypass lru touch for KIQ ring submission
drm/amdgpu: Potential uninitialized variable in amdgpu_vm_update_directories()
drm/amdgpu: potential uninitialized variable in amdgpu_vce_ring_parse_cs()
drm/amd/powerplay: initialize a variable before using it
drm/amd/powerplay: suppress KASAN out of bounds warning in vega10_populate_all_memory_levels
drm/amd/amdgpu: fix evicted VRAM bo adjudgement condition
drm/vblank: Tune drm_crtc_accurate_vblank_count() WARN down to a debug
drm/rockchip: add CONFIG_OF dependency for lvds
...
Pull leaking_addresses script updates from Tobin Harding:
"Here are development patches for the leaking_addresses.pl script.
Changes include:
- add summary reporting to the script
- add 'SigIgn' to false positives
- add a file read timeout so the script doesn't block indefinitely
- add infrastructure to enable multi-arch support and add support for ppc
- add some exclude files/paths suggested by various people
- code clean up and refactoring
- overhaul command line options"
* tag 'leaks-4.15-rc1' of git://github.com/tcharding/linux:
leaking_addresses: add SigIgn to false positives
leaking_addresses: add timeout on file read
leaking_addresses: add support for ppc64
leaking_addresses: add summary reporting options
leaking_addresses: add to exclude files/paths list
leaking_addresses: fix comment string typo
leaking_addresses: remove command line options
leaking_addresses: remove dead/unused code
leaking_addresses: use tabs instead of spaces