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| author | Fam Zheng | 2014-11-06 13:44:36 +0100 |
|---|---|---|
| committer | Benjamin LaHaise | 2014-12-13 23:50:20 +0100 |
| commit | 5f785de588735306ec4d7c875caf9d28481c8b21 (patch) | |
| tree | 7f405dcbe7e4b53d554ee6e4040a331a505dcd92 /mm/mremap.c | |
| parent | aio: Make it possible to remap aio ring (diff) | |
| download | kernel-qcow2-linux-5f785de588735306ec4d7c875caf9d28481c8b21.tar.gz kernel-qcow2-linux-5f785de588735306ec4d7c875caf9d28481c8b21.tar.xz kernel-qcow2-linux-5f785de588735306ec4d7c875caf9d28481c8b21.zip | |
aio: Skip timer for io_getevents if timeout=0
In this case, it is basically a polling. Let's not involve timer at all
because that would hurt performance for application event loops.
In an arbitrary test I've done, io_getevents syscall elapsed time
reduces from 50000+ nanoseconds to a few hundereds.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Diffstat (limited to 'mm/mremap.c')
0 files changed, 0 insertions, 0 deletions