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| author |   Tomoki Sekiyama <tomoki.sekiyama.qu@hitachi.com> | 2012-09-26 11:11:28 +0900 |
|---|---|---|
| committer |   H. Peter Anvin <hpa@linux.intel.com> | 2012-09-27 22:52:34 -0700 |
| commit | fd0f5869724ff6195c6e7f12f8287c66a132e0ba (patch) | |
| tree | c6cab9cd8acd8ad644e53bea2aa2a439b53688a9 /arch/x86/mm | |
| parent | x86/mm: Fix range check in tlbflush debugfs interface (diff) | |
| download | linux-dev-fd0f5869724ff6195c6e7f12f8287c66a132e0ba.tar.xz linux-dev-fd0f5869724ff6195c6e7f12f8287c66a132e0ba.zip | |
x86: Distinguish TLB shootdown interrupts from other functions call interrupts
As TLB shootdown requests to other CPU cores are now using function call
interrupts, TLB shootdowns entry in /proc/interrupts is always shown as 0.
This behavior change was introduced by commit 52aec3308db8 ("x86/tlb:
replace INVALIDATE_TLB_VECTOR by CALL_FUNCTION_VECTOR").
This patch reverts TLB shootdowns entry in /proc/interrupts to count TLB
shootdowns separately from the other function call interrupts.
Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama.qu@hitachi.com>
Link: http://lkml.kernel.org/r/20120926021128.22212.20440.stgit@hpxw
Acked-by: Alex Shi <alex.shi@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/tlb.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index a085c560b4a5..0777f042e400 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -98,6 +98,8 @@ static void flush_tlb_func(void *info) { struct flush_tlb_info *f = info; + inc_irq_stat(irq_tlb_count); + if (f->flush_mm != this_cpu_read(cpu_tlbstate.active_mm)) return; |