Messages in this thread Patch in this message | | | Date | Tue, 21 Sep 2010 14:13:26 GMT | From | tip-bot for Peter Zijlstra <> | Subject | [tip:perf/core] percpu: Add {get,put}_cpu_ptr |
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Commit-ID: 8b8e2ec1eeca7f6941bc81cefc9663018d6ceb57 Gitweb: http://git.kernel.org/tip/8b8e2ec1eeca7f6941bc81cefc9663018d6ceb57 Author: Peter Zijlstra <a.p.zijlstra@chello.nl> AuthorDate: Thu, 16 Sep 2010 19:21:28 +0200 Committer: Ingo Molnar <mingo@elte.hu> CommitDate: Tue, 21 Sep 2010 13:55:43 +0200
percpu: Add {get,put}_cpu_ptr
These are similar to {get,put}_cpu_var() except for dynamically allocated per-cpu memory.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Tejun Heo <tj@kernel.org> LKML-Reference: <20100917093009.252867712@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu> --- include/linux/percpu.h | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/include/linux/percpu.h b/include/linux/percpu.h index 49466b1..0eb5083 100644 --- a/include/linux/percpu.h +++ b/include/linux/percpu.h @@ -39,6 +39,15 @@ preempt_enable(); \ } while (0) +#define get_cpu_ptr(var) ({ \ + preempt_disable(); \ + this_cpu_ptr(var); }) + +#define put_cpu_ptr(var) do { \ + (void)(var); \ + preempt_enable(); \ +} while (0) + #ifdef CONFIG_SMP /* minimum unit size, also is the maximum supported allocation size */
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