Commit-ID: 9a0f05cb36888550d1509d60aa55788615abea44 Gitweb: http://git.kernel.org/tip/9a0f05cb36888550d1509d60aa55788615abea44 Author: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> AuthorDate: Mon, 21 Nov 2011 15:13:29 +0100 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Wed, 21 Dec 2011 11:01:05 +0100 perf: Update the mmap control page on mmap() Apparently we didn't update the mmap control page right after mmap(), which leads to surprises when userspace wants to use it. Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: Stephane Eranian <eranian@xxxxxxxxxx> Cc: Arun Sharma <asharma@xxxxxx> Link: http://lkml.kernel.org/n/tip-dcpi7164djsexmx6ya7lilrc@xxxxxxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- kernel/events/core.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index 2f8f3f1..0ca1f64 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -3534,6 +3534,8 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma) event->mmap_user = get_current_user(); vma->vm_mm->pinned_vm += event->mmap_locked; + perf_event_update_userpage(event); + unlock: if (!ret) atomic_inc(&event->mmap_count); -- 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
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