diff options
| author | David S. Miller <davem@davemloft.net> | 2011-06-20 22:29:08 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-06-20 22:29:08 -0700 |
| commit | 9f6ec8d697c08963d83880ccd35c13c5ace716ea (patch) | |
| tree | ad8d93cf6fcdd09b86ade09f5fcbbc66cdb1cca2 /drivers/oprofile/buffer_sync.c | |
| parent | 4aa3a715551c93eda32d79bd52042ce500bd5383 (diff) | |
| parent | 56299378726d5f2ba8d3c8cbbd13cb280ba45e4f (diff) | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
drivers/net/wireless/rtlwifi/pci.c
net/netfilter/ipvs/ip_vs_core.c
Diffstat (limited to 'drivers/oprofile/buffer_sync.c')
| -rw-r--r-- | drivers/oprofile/buffer_sync.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c index a3984f4ef19..f34b5b29fb9 100644 --- a/drivers/oprofile/buffer_sync.c +++ b/drivers/oprofile/buffer_sync.c @@ -141,6 +141,13 @@ static struct notifier_block module_load_nb = { .notifier_call = module_load_notify, }; +static void free_all_tasks(void) +{ + /* make sure we don't leak task structs */ + process_task_mortuary(); + process_task_mortuary(); +} + int sync_start(void) { int err; @@ -148,8 +155,6 @@ int sync_start(void) if (!zalloc_cpumask_var(&marked_cpus, GFP_KERNEL)) return -ENOMEM; - mutex_lock(&buffer_mutex); - err = task_handoff_register(&task_free_nb); if (err) goto out1; @@ -166,7 +171,6 @@ int sync_start(void) start_cpu_work(); out: - mutex_unlock(&buffer_mutex); return err; out4: profile_event_unregister(PROFILE_MUNMAP, &munmap_nb); @@ -174,6 +178,7 @@ out3: profile_event_unregister(PROFILE_TASK_EXIT, &task_exit_nb); out2: task_handoff_unregister(&task_free_nb); + free_all_tasks(); out1: free_cpumask_var(marked_cpus); goto out; @@ -182,20 +187,16 @@ out1: void sync_stop(void) { - /* flush buffers */ - mutex_lock(&buffer_mutex); end_cpu_work(); unregister_module_notifier(&module_load_nb); profile_event_unregister(PROFILE_MUNMAP, &munmap_nb); profile_event_unregister(PROFILE_TASK_EXIT, &task_exit_nb); task_handoff_unregister(&task_free_nb); - mutex_unlock(&buffer_mutex); - flush_cpu_work(); + barrier(); /* do all of the above first */ - /* make sure we don't leak task structs */ - process_task_mortuary(); - process_task_mortuary(); + flush_cpu_work(); + free_all_tasks(); free_cpumask_var(marked_cpus); } |