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| author |   Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-05-05 17:50:24 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-05-05 20:18:32 +0200 |
| commit | c5078f78b455fbf67ea71442c7e7ca8acf9ff095 (patch) | |
| tree | bdd3b699919f2b23faf13177954e82b570653711 /kernel/sysctl.c | |
| parent | perf_counter: add ioctl(PERF_COUNTER_IOC_RESET) (diff) | |
| download | linux-dev-c5078f78b455fbf67ea71442c7e7ca8acf9ff095.tar.xz linux-dev-c5078f78b455fbf67ea71442c7e7ca8acf9ff095.zip | |
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.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 8203d70928d5..3b05c2b088d2 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 |