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| author | Gleb Natapov <gleb@redhat.com> | 2011-10-18 19:55:51 +0200 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2011-11-07 11:02:34 -0500 |
| commit | c8452afb7426f7e21388492f40227582e3e83879 (patch) | |
| tree | dd01f094321d9d8c6412d11cc4dd1a33d18b48f7 /arch | |
| parent | 8ee3c92b7f2751c392be2d8fc360a410480b8757 (diff) | |
| download | linux-c8452afb7426f7e21388492f40227582e3e83879.tar.gz linux-c8452afb7426f7e21388492f40227582e3e83879.tar.bz2 linux-c8452afb7426f7e21388492f40227582e3e83879.zip | |
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 'arch')
0 files changed, 0 insertions, 0 deletions