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| author | Dave Hansen | 2013-09-11 23:20:24 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2013-09-12 00:57:09 +0200 |
| commit | 6df46865ff8715932e7d42e52cac17e8461758cb (patch) | |
| tree | 7c7e1d43b22a2bec2d4a6fce95ddc3cbd481aa1e /mm/ksm.c | |
| parent | mm: vmstats: tlb flush counters (diff) | |
| download | kernel-qcow2-linux-6df46865ff8715932e7d42e52cac17e8461758cb.tar.gz kernel-qcow2-linux-6df46865ff8715932e7d42e52cac17e8461758cb.tar.xz kernel-qcow2-linux-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/ksm.c')
0 files changed, 0 insertions, 0 deletions