diff options
| author | Soheil Hassas Yeganeh <soheil@google.com> | 2020-12-19 01:01:48 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-19 22:18:37 +0300 |
| commit | 2efdaf7660c408d57721cc6dacb0167f866cb451 (patch) | |
| tree | f408a18b19361393572b8a59525bf97826fd08f9 /tools/perf/builtin-ftrace.c | |
| parent | 289caf5d8f6c61c6d2b7fd752a7f483cd153f182 (diff) | |
| download | linux-2efdaf7660c408d57721cc6dacb0167f866cb451.tar.xz | |
epoll: simplify signal handling
Check signals before locking ep->lock, and immediately return -EINTR if
there is any signal pending.
This saves a few loads, stores, and branches from the hot path and
simplifies the loop structure for follow up patches.
Link: https://lkml.kernel.org/r/20201106231635.3528496-3-soheil.kdev@gmail.com
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Khazhismel Kumykov <khazhy@google.com>
Cc: Guantao Liu <guantaol@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools/perf/builtin-ftrace.c')
0 files changed, 0 insertions, 0 deletions