| commit | 8d1acce4537c4e2f5889ed9ba9b8eddb80d99820 | |
| author | Rik van Riel <riel@redhat.com> | |
| Tue, 9 Oct 2012 13:31:59 +0000 (9 15:31 +0200) | ||
| committer | Mel Gorman <mgorman@suse.de> | |
| Tue, 11 Dec 2012 14:28:34 +0000 (11 14:28 +0000) | ||
| tree | 8032b026c25b3394613abde6d0f22529a1ef4e2a | treesnapshot (tar.gz zip) |
| parent | 2c3cf556b2f7ab5823195766eddec6f1a43134f5 | commitdiff |
mm: Only flush the TLB when clearing an accessible pte
If ptep_clear_flush() is called to clear a page table entry that is
accessible anyway by the CPU, eg. a _PAGE_PROTNONE page table entry,
there is no need to flush the TLB on remote CPUs.
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/n/tip-vm3rkzevahelwhejx5uwm8ex@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
If ptep_clear_flush() is called to clear a page table entry that is
accessible anyway by the CPU, eg. a _PAGE_PROTNONE page table entry,
there is no need to flush the TLB on remote CPUs.
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/n/tip-vm3rkzevahelwhejx5uwm8ex@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| mm/pgtable-generic.c | diffblobblamehistory |