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| author | Gleb Natapov <gleb@redhat.com> | 2011-10-18 21:55:51 +0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2011-12-05 22:28:46 +0400 |
| commit | bbbf7af4bf8fc69bc751818cf30521080fa47dcb (patch) | |
| tree | bbc986e2013cdfeb3b99bacc2f5326b787b7e410 /tools | |
| parent | c7c6ec8becaf742b223c7b491f4893014be23a07 (diff) | |
| download | linux-bbbf7af4bf8fc69bc751818cf30521080fa47dcb.tar.xz | |
jump_label: jump_label_inc may return before the code is patched
If cpu A calls jump_label_inc() just after atomic_add_return() is
called by cpu B, atomic_inc_not_zero() will return value greater then
zero and jump_label_inc() will return to a caller before jump_label_update()
finishes its job on cpu B.
Link: http://lkml.kernel.org/r/20111018175551.GH17571@redhat.com
Cc: stable@vger.kernel.org
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions