| commit | 41945f6ccf1e86f87fddf6b32db9cf431c05fb54 | [log] [tgz] |
|---|---|---|
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | Thu Sep 16 19:17:24 2010 +0200 |
| committer | Ingo Molnar <mingo@elte.hu> | Tue Sep 21 13:55:44 2010 +0200 |
| tree | cf64d47bfff06ff4560efcaa23a067fa99db34dd | |
| parent | 8b8e2ec1eeca7f6941bc81cefc9663018d6ceb57 [diff] |
perf: Avoid RCU vs preemption assumptions
The per-pmu per-cpu context patch converted things from
get_cpu_var() to this_cpu_ptr(), but that only works if
rcu_read_lock() actually disables preemption, and since
there is no such guarantee, we need to fix that.
Use the newly introduced {get,put}_cpu_ptr().
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Tejun Heo <tj@kernel.org>
LKML-Reference: <20100917093009.308453028@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>