Messages in this thread Patch in this message | | | From | Frederic Weisbecker <> | Subject | [PATCH] perf: Rebase max unprivileged mlock threshold on top of page size | Date | Wed, 30 Mar 2011 16:04:30 +0200 |
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So that we ensure we allow 129 pages, even if the page size is different than 4096.
Reported-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Stable <stable@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Stephane Eranian <eranian@google.com> --- kernel/perf_event.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/perf_event.c b/kernel/perf_event.c index c75925c..fce1b8a 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -146,7 +146,7 @@ static struct srcu_struct pmus_srcu; int sysctl_perf_event_paranoid __read_mostly = 1; /* Minimum for 128 pages + 1 for the user control page */ -int sysctl_perf_event_mlock __read_mostly = 516; /* 'free' kb per user */ +int sysctl_perf_event_mlock __read_mostly = (129 * PAGE_SIZE) / 1024; /* 'free' kb per user */ /* * max perf event sample rate -- 1.7.3.2
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