lkml.org 
[lkml]   [2011]   [Mar]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] perf: Rebase max unprivileged mlock threshold on top of page size
Date
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


\
 
 \ /
  Last update: 2011-03-30 16:07    [W:0.094 / U:0.340 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site