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| author | Dave Hansen <dave@sr71.net> | 2013-09-11 14:20:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-11 15:57:09 -0700 |
| commit | 6df46865ff8715932e7d42e52cac17e8461758cb (patch) | |
| tree | 7c7e1d43b22a2bec2d4a6fce95ddc3cbd481aa1e /mm/vmstat.c | |
| parent | 9824cf9753ecbe8f5b47aa9b2f218207defea211 (diff) | |
| download | lwn-6df46865ff8715932e7d42e52cac17e8461758cb.tar.gz lwn-6df46865ff8715932e7d42e52cac17e8461758cb.zip | |
mm: vmstats: track TLB flush stats on UP too
The previous patch doing vmstats for TLB flushes ("mm: vmstats: tlb flush
counters") effectively missed UP since arch/x86/mm/tlb.c is only compiled
for SMP.
UP systems do not do remote TLB flushes, so compile those counters out on
UP.
arch/x86/kernel/cpu/mtrr/generic.c calls __flush_tlb() directly. This is
probably an optimization since both the mtrr code and __flush_tlb() write
cr4. It would probably be safe to make that a flush_tlb_all() (and then
get these statistics), but the mtrr code is ancient and I'm hesitant to
touch it other than to just stick in the counters.
[akpm@linux-foundation.org: tweak comments]
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmstat.c')
| -rw-r--r-- | mm/vmstat.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index 00382c53f582..ca06e9653827 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -817,11 +817,12 @@ const char * const vmstat_text[] = { "thp_zero_page_alloc", "thp_zero_page_alloc_failed", #endif +#ifdef CONFIG_SMP "nr_tlb_remote_flush", "nr_tlb_remote_flush_received", +#endif "nr_tlb_local_flush_all", "nr_tlb_local_flush_one", - "nr_tlb_local_flush_one_kernel", #endif /* CONFIG_VM_EVENTS_COUNTERS */ }; |