Commit-ID: 8740f9418c78dcad694b46ab25d1645d5aef1f5e Gitweb: http://git.kernel.org/tip/8740f9418c78dcad694b46ab25d1645d5aef1f5e Author: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> AuthorDate: Wed, 8 Apr 2009 15:01:29 +0200 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Wed, 8 Apr 2009 18:53:29 +0200 perf_counter: add some comments Add a few comments because I was forgetting what field what for what functionality. Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx> LKML-Reference: <20090408130409.036984214@xxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- include/linux/perf_counter.h | 10 ++++++---- 1 files changed, 6 insertions(+), 4 deletions(-) diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index 4809ae1..8bf764f 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -344,10 +344,12 @@ struct file; struct perf_mmap_data { struct rcu_head rcu_head; - int nr_pages; - atomic_t wakeup; - atomic_t head; - atomic_t events; + int nr_pages; /* nr of data pages */ + + atomic_t wakeup; /* POLL_ for wakeups */ + atomic_t head; /* write position */ + atomic_t events; /* event limit */ + struct perf_counter_mmap_page *user_page; void *data_pages[0]; }; -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html