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| author | Mikulas Patocka <mpatocka@redhat.com> | 2019-10-15 15:16:29 +0300 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2019-11-05 22:38:26 +0300 |
| commit | 8e0c9dacc39eccd27e70cf3243896b43f5398c17 (patch) | |
| tree | 864e186b834816c32a752d7e9f3c832442a0e092 /tools/perf/scripts/python/failed-syscalls-by-pid.py | |
| parent | 52c67d416b26be1f91fbcbd57cfcf6ffca76ff29 (diff) | |
| download | linux-8e0c9dacc39eccd27e70cf3243896b43f5398c17.tar.xz | |
dm thin: replace spin_lock_irqsave with spin_lock_irq
If we are in a place where it is known that interrupts are enabled,
functions spin_lock_irq/spin_unlock_irq should be used instead of
spin_lock_irqsave/spin_unlock_irqrestore.
spin_lock_irq and spin_unlock_irq are faster because they don't need to
push and pop the flags register.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/failed-syscalls-by-pid.py')
0 files changed, 0 insertions, 0 deletions