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| author |   Alexey Dobriyan <adobriyan@gmail.com> | 2018-06-14 15:27:17 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-15 07:55:24 +0900 |
| commit | 26b95137d673d8d6a9a124d433d968e18298f4ed (patch) | |
| tree | 1f31d199ff9290dbd082a2559731fb6fce193edc /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | mremap: remove LATENCY_LIMIT from mremap to reduce the number of TLB shootdowns (diff) | |
| download | wireguard-linux-26b95137d673d8d6a9a124d433d968e18298f4ed.tar.xz wireguard-linux-26b95137d673d8d6a9a124d433d968e18298f4ed.zip | |
proc: skip branch in /proc/*/* lookup
Code is structured like this:
for ( ... p < last; p++) {
if (memcmp == 0)
break;
}
if (p >= last)
ERROR
OK
gcc doesn't see that if if lookup succeeds than post loop branch will
never be taken and skip it.
[akpm@linux-foundation.org: proc_pident_instantiate() no longer takes an inode*]
Link: http://lkml.kernel.org/r/20180423213954.GD9043@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions