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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-05-05 17:50:24 +0200
committerIngo Molnar <mingo@elte.hu>2009-05-05 20:18:32 +0200
commitc5078f78b455fbf67ea71442c7e7ca8acf9ff095 (patch)
treebdd3b699919f2b23faf13177954e82b570653711 /kernel/sysctl.c
parent6de6a7b95705b859b61430fa3afa1403034eb3e6 (diff)
downloadop-kernel-dev-c5078f78b455fbf67ea71442c7e7ca8acf9ff095.zip
op-kernel-dev-c5078f78b455fbf67ea71442c7e7ca8acf9ff095.tar.gz
perf_counter: provide an mlock threshold
Provide a threshold to relax the mlock accounting, increasing usability. Each counter gets perf_counter_mlock_kb for free. [ Impact: allow more mmap buffering ] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> LKML-Reference: <20090505155437.112113632@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sysctl.c')
-rw-r--r--kernel/sysctl.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 8203d70..3b05c2b 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -920,6 +920,14 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
.proc_handler = &proc_dointvec,
},
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "perf_counter_mlock_kb",
+ .data = &sysctl_perf_counter_mlock,
+ .maxlen = sizeof(sysctl_perf_counter_mlock),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
#endif
/*
* NOTE: do not add new entries to this table unless you have read
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