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Markos Chandras cccf34e941 MIPS: c-r4k: Fix cache flushing for MT cores 
MT_SMP is not the only SMP option for MT cores. The MT_SMP option
allows more than one VPE per core to appear as a secondary CPU in the
system. Because of how CM works, it propagates the address-based
cache ops to the secondary cores but not the index-based ones.
Because of that, the code does not use IPIs to flush the L1 caches on
secondary cores because the CM would have done that already. However,
the CM functionality is independent of the type of SMP kernel so even in
non-MT kernels, IPIs are not necessary. As a result of which, we change
the conditional to depend on the CM presence. Moreover, since VPEs on
the same core share the same L1 caches, there is no need to send an
IPI on all of them so we calculate a suitable cpumask with only one
VPE per core.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: <stable@vger.kernel.org> # 3.15+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10654/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 		2015-07-10 10:59:16 +02:00
..
.gitignore
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8250-platform.c
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Makefile MIPS/IRQCHIP: Move irq_chip from arch/mips to drivers/irqchip. 2015-06-21 21:52:50 +02:00
asm-offsets.c Merge branch 'exec_domain_rip_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc 2015-04-15 13:53:55 -07:00
binfmt_elfn32.c
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binfmt_elfo32.c
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bmips_vec.S
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branch.c MIPS: Fix branch emulation for BLTC and BGEC instructions 2015-07-09 11:10:40 +02:00
cevt-bcm1480.c
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cevt-ds1287.c
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cevt-gt641xx.c
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cevt-r4k.c MIPS: cevt-r4k: Cleanup c0_compare_interrupt. 2015-03-31 12:04:12 +02:00
cevt-sb1250.c
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cevt-txx9.c MIPS: cevt-txx9: Implement read_sched_clock 2015-04-01 17:21:30 +02:00
cps-vec.S MIPS: cps-vec: Use macros for various arithmetics and memory operations 2015-07-09 11:17:01 +02:00
cpu-bugs64.c MIPS: kernel: cpu-bugs64: Do not check R6 cores for existing 64-bit bugs 2015-02-17 15:37:24 +00:00
cpu-probe.c MIPS: R12000: Enable branch prediction global history 2015-06-21 21:54:13 +02:00
crash.c mips: fix up obsolete cpu function usage. 2015-03-05 15:25:06 +10:30
crash_dump.c
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csrc-bcm1480.c MIPS: csrc-bcm1480: Implement read_sched_clock 2015-04-01 17:21:27 +02:00
csrc-ioasic.c MIPS: csrc-ioasic: Implement read_sched_clock 2015-04-01 17:21:28 +02:00
csrc-r4k.c MIPS: csrc-r4k: Implement read_sched_clock 2015-04-01 17:21:27 +02:00
csrc-sb1250.c MIPS: csrc-sb1250: Implement read_sched_clock 2015-04-01 17:21:33 +02:00
early_printk.c
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early_printk_8250.c
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elf.c MIPS: fix FP mode selection in lieu of .MIPS.abiflags data 2015-05-12 18:54:05 +02:00
entry.S MIPS: kernel: entry.S: Set correct ISA level for mips_ihb 2015-04-10 15:41:46 +02:00
ftrace.c
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genex.S Merge branch '4.1-fp' into mips-for-linux-next 2015-04-13 16:01:37 +02:00
gpio_txx9.c
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head.S MIPS: Add support for vmlinux.bin appended dtb 2015-06-21 21:54:14 +02:00
i8253.c
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i8259.c MIPS: i8259: DT support 2015-06-21 21:54:29 +02:00
idle.c MIPS: idle: Workaround wait + FDC problems 2015-03-31 12:04:12 +02:00
irq-gt641xx.c
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irq-msc01.c
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irq-rm7000.c
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irq.c MIPS: IRQ/IP27: Move IRQ allocation API to platform code. 2015-06-21 21:54:31 +02:00
irq_txx9.c
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jump_label.c
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kgdb.c MIPS: Get rid of 'kgdb_early_setup' cruft. 2015-06-21 21:54:10 +02:00
kprobes.c
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linux32.c
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machine_kexec.c
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mcount.S
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mips-cm.c MIPS: Replace use of phys_t with phys_addr_t. 2014-11-24 22:47:31 +01:00
mips-cpc.c MIPS: Replace use of phys_t with phys_addr_t. 2014-11-24 22:47:31 +01:00
mips-mt-fpaff.c mips: fix up obsolete cpu function usage. 2015-03-05 15:25:06 +10:30
mips-mt.c
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mips-r2-to-r6-emul.c MIPS: Set `si_code' for SIGFPE signals sent from emulation too 2015-04-08 01:10:19 +02:00
mips_ksyms.c Merge branch 'mipsr6-for-3.20' of git://git.linux-mips.org/pub/scm/mchandras/linux into mips-for-linux-next 2015-02-19 16:00:34 +01:00
mips_machine.c
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module-rela.c
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module.c mm: vmalloc: pass additional vm_flags to __vmalloc_node_range() 2015-02-13 21:21:42 -08:00
octeon_switch.S MIPS: OCTEON: Delete unused COP2 saving code 2015-02-20 15:30:23 +01:00
perf_event.c
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perf_event_mipsxx.c MIPS: perf: Add hardware perf events support for Loongson-3 2015-04-01 17:22:17 +02:00
pm-cps.c
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pm.c
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proc.c MIPS: Add support for XPA. 2015-03-19 17:39:49 +01:00
process.c This is the final removal (after several years!) of the obsolete cpus_* 2015-04-20 10:19:03 -07:00
prom.c MIPS: prepare for user enabling of CONFIG_OF 2015-06-21 21:54:14 +02:00
ptrace.c MIPS: Fix a preemption issue with thread's FPU defaults 2015-05-12 23:15:49 +02:00
ptrace32.c
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r4k_fpu.S MIPS: Push .set mips64r* into the functions needing it 2015-03-27 19:42:42 +01:00
r4k_switch.S MIPS: Respect the ISA level in FCSR handling 2015-04-08 01:10:37 +02:00
r2300_fpu.S
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r2300_switch.S MIPS: Respect the ISA level in FCSR handling 2015-04-08 01:10:37 +02:00
r6000_fpu.S
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relocate_kernel.S
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reset.c MIPS: Provide fallback reboot/poweroff/halt implementations 2015-04-01 17:21:58 +02:00
rtlx-cmp.c
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rtlx-mt.c
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rtlx.c
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scall32-o32.S MIPS: O32: Do not handle require 32 bytes from the stack to be readable. 2015-07-08 05:03:30 +02:00
scall64-64.S MIPS: Wire up execveat(2). 2015-01-13 15:53:09 +01:00
scall64-n32.S MIPS: Wire up execveat(2). 2015-01-13 15:53:09 +01:00
scall64-o32.S MIPS: O32: Do not handle require 32 bytes from the stack to be readable. 2015-07-08 05:03:30 +02:00
segment.c
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setup.c MIPS: bootmem: Don't use memory holes for page bitmap 2015-07-09 11:02:59 +02:00
signal-common.h sched/preempt, MIPS: Properly lock access to the FPU 2015-05-19 08:39:18 +02:00
signal.c all arches, signal: move restart_block to struct task_struct 2015-02-12 18:54:12 -08:00
signal32.c all arches, signal: move restart_block to struct task_struct 2015-02-12 18:54:12 -08:00
signal_n32.c
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smp-bmips.c MIPS: BMIPS: Fix bmips_wr_vec() 2015-05-29 20:23:43 +02:00
smp-cmp.c mips: fix up obsolete cpu function usage. 2015-03-05 15:25:06 +10:30
smp-cps.c MIPS: kernel: smp-cps: Fix 64-bit compatibility errors due to pointer casting 2015-07-09 11:12:57 +02:00
smp-gic.c
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smp-mt.c mips: fix up obsolete cpu function usage. 2015-03-05 15:25:06 +10:30
smp-up.c
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smp.c MIPS: c-r4k: Fix cache flushing for MT cores 2015-07-10 10:59:16 +02:00
spinlock_test.c
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spram.c MIPS: Add cases for CPU_QEMU_GENERIC 2015-02-16 10:01:24 +00:00
stacktrace.c
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sync-r4k.c
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syscall.c MIPS: kernel: syscall: Set the appropriate ISA level for MIPS R6 2015-02-17 15:37:29 +00:00
sysrq.c MIPS: Add SysRq operation to dump TLBs on all CPUs 2015-06-21 21:52:27 +02:00
time.c
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topology.c
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traps.c MIPS: kernel: traps: Fix broken indentation 2015-07-09 11:09:47 +02:00
unaligned.c Merge branch '4.0-fixes' into mips-for-linux-next 2015-04-13 16:03:32 +02:00
vdso.c MIPS: Enable VDSO randomization 2014-11-24 07:45:38 +01:00
vmlinux.lds.S MIPS: Add support for vmlinux.bin appended dtb 2015-06-21 21:54:14 +02:00
vpe-cmp.c
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vpe-mt.c
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vpe.c
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watch.c
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