bianbu-repo-mirror/bianbu-linux-6.6
1
0
Fork 0
mirror of https://gitee.com/bianbu-linux/linux-6.6 synced 2025-04-26 14:17:26 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

perf_counter: Change pctrl() behaviour

Browse source 
Instead of en/dis-abling all counters acting on a particular
task, en/dis- able all counters we created.

[ v2: fix crash on first counter enable ]

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <20090523163012.916937244@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2009-05-23 18:29:00 +02:00 • committed by Ingo Molnar
parent aa9c67f53d
commit 082ff5a276
4 changed files with 39 additions and 63 deletions
Download patch file Download diff file Expand all files Collapse all files

10
include/linux/init_task.h
View file

@ -108,6 +108,15 @@ extern struct group_info init_groups;
extern struct cred init_cred;
#ifdef CONFIG_PERF_COUNTERS
# define INIT_PERF_COUNTERS(tsk) \
.perf_counter_mutex = \
__MUTEX_INITIALIZER(tsk.perf_counter_mutex), \
.perf_counter_list = LIST_HEAD_INIT(tsk.perf_counter_list),
#else
# define INIT_PERF_COUNTERS(tsk)
#endif
/*
* INIT_TASK is used to set up the first task table, touch at
* your own risk!. Base=0, limit=0x1fffff (=2MB)
@ -171,6 +180,7 @@ extern struct cred init_cred;
}, \
.dirties = INIT_PROP_LOCAL_SINGLE(dirties), \
INIT_IDS \
INIT_PERF_COUNTERS(tsk) \
INIT_TRACE_IRQFLAGS \
INIT_LOCKDEP \
INIT_FTRACE_GRAPH \