The patch titled
Subject: x86/mm: TLB_REMOTE_SEND_IPI should count pages
has been added to the -mm tree. Its filename is
x86-mm-tlb_remote_send_ipi-should-count-pages.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/x86-mm-tlb_remote_send_ipi-should-count-pages.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/x86-mm-tlb_remote_send_ipi-should-count-pages.patch
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------------------------------------------------------
From: Nadav Amit <namit@xxxxxxxxxx>
Subject: x86/mm: TLB_REMOTE_SEND_IPI should count pages
TLB_REMOTE_SEND_IPI was recently introduced, but it counts bytes instead
of pages. In addition, it does not report correctly the case in which
flush_tlb_page flushes a page. Fix it to be consistent with other TLB
counters.
Fixes: 5b74283ab251b9d ("x86, mm: trace when an IPI is about to be sent")
Signed-off-by: Nadav Amit <namit@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/mm/tlb.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff -puN arch/x86/mm/tlb.c~x86-mm-tlb_remote_send_ipi-should-count-pages arch/x86/mm/tlb.c
--- a/arch/x86/mm/tlb.c~x86-mm-tlb_remote_send_ipi-should-count-pages
+++ a/arch/x86/mm/tlb.c
@@ -106,8 +106,6 @@ static void flush_tlb_func(void *info)
if (f->flush_mm != this_cpu_read(cpu_tlbstate.active_mm))
return;
- if (!f->flush_end)
- f->flush_end = f->flush_start + PAGE_SIZE;
count_vm_tlb_event(NR_TLB_REMOTE_FLUSH_RECEIVED);
if (this_cpu_read(cpu_tlbstate.state) == TLBSTATE_OK) {
@@ -135,12 +133,20 @@ void native_flush_tlb_others(const struc
unsigned long end)
{
struct flush_tlb_info info;
+
+ if (end == 0)
+ end = start + PAGE_SIZE;
info.flush_mm = mm;
info.flush_start = start;
info.flush_end = end;
count_vm_tlb_event(NR_TLB_REMOTE_FLUSH);
- trace_tlb_flush(TLB_REMOTE_SEND_IPI, end - start);
+ if (end == TLB_FLUSH_ALL)
+ trace_tlb_flush(TLB_REMOTE_SEND_IPI, TLB_FLUSH_ALL);
+ else
+ trace_tlb_flush(TLB_REMOTE_SEND_IPI,
+ (end - start) >> PAGE_SHIFT);
+
if (is_uv_system()) {
unsigned int cpu;
_
Patches currently in -mm which might be from namit@xxxxxxxxxx are
x86-mm-tlb_remote_send_ipi-should-count-pages.patch
mm-rmap-batched-invalidations-should-use-existing-api.patch
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