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| author | Andrea Arcangeli <aarcange@redhat.com> | 2011-12-08 14:33:57 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-12-09 07:50:28 -0800 |
| commit | 1dfb059b9438633b0546c5431538a47f6ed99028 (patch) | |
| tree | 4e6181dfc2f8f21e01938246842305243c1bdb0e /CREDITS | |
| parent | b53fc7c2974a50913f49e1d800fe904a28c338e3 (diff) | |
| download | lwn-1dfb059b9438633b0546c5431538a47f6ed99028.tar.gz lwn-1dfb059b9438633b0546c5431538a47f6ed99028.zip | |
thp: reduce khugepaged freezing latency
khugepaged can sometimes cause suspend to fail, requiring that the user
retry the suspend operation.
Use wait_event_freezable_timeout() instead of
schedule_timeout_interruptible() to avoid missing freezer wakeups. A
try_to_freeze() would have been needed in the khugepaged_alloc_hugepage
tight loop too in case of the allocation failing repeatedly, and
wait_event_freezable_timeout will provide it too.
khugepaged would still freeze just fine by trying again the next minute
but it's better if it freezes immediately.
Reported-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Tested-by: Jiri Slaby <jslaby@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
Cc: "Rafael J. Wysocki" <rjw@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'CREDITS')
0 files changed, 0 insertions, 0 deletions