diff options
Diffstat (limited to 'drivers/oprofile')
| -rw-r--r-- | drivers/oprofile/oprofile_perf.c | 54 |
1 files changed, 26 insertions, 28 deletions
diff --git a/drivers/oprofile/oprofile_perf.c b/drivers/oprofile/oprofile_perf.c index a34137f..b17235a 100644 --- a/drivers/oprofile/oprofile_perf.c +++ b/drivers/oprofile/oprofile_perf.c @@ -245,10 +245,33 @@ static int __init init_driverfs(void) { return 0; } #define exit_driverfs() do { } while (0) #endif /* CONFIG_PM */ +void oprofile_perf_exit(void) +{ + int cpu, id; + struct perf_event *event; + + for_each_possible_cpu(cpu) { + for (id = 0; id < num_counters; ++id) { + event = perf_events[cpu][id]; + if (event) + perf_event_release_kernel(event); + } + + kfree(perf_events[cpu]); + } + + kfree(counter_config); + exit_driverfs(); +} + int __init oprofile_perf_init(struct oprofile_operations *ops) { int cpu, ret = 0; + ret = init_driverfs(); + if (ret) + return ret; + memset(&perf_events, 0, sizeof(perf_events)); num_counters = perf_num_counters(); @@ -265,13 +288,10 @@ int __init oprofile_perf_init(struct oprofile_operations *ops) pr_info("oprofile: failed to allocate %d " "counters\n", num_counters); ret = -ENOMEM; + num_counters = 0; goto out; } - ret = init_driverfs(); - if (ret) - goto out; - for_each_possible_cpu(cpu) { perf_events[cpu] = kcalloc(num_counters, sizeof(struct perf_event *), GFP_KERNEL); @@ -296,30 +316,8 @@ int __init oprofile_perf_init(struct oprofile_operations *ops) pr_info("oprofile: using %s\n", ops->cpu_type); out: - if (ret) { - for_each_possible_cpu(cpu) - kfree(perf_events[cpu]); - kfree(counter_config); - } + if (ret) + oprofile_perf_exit(); return ret; } - -void __exit oprofile_perf_exit(void) -{ - int cpu, id; - struct perf_event *event; - - for_each_possible_cpu(cpu) { - for (id = 0; id < num_counters; ++id) { - event = perf_events[cpu][id]; - if (event) - perf_event_release_kernel(event); - } - - kfree(perf_events[cpu]); - } - - kfree(counter_config); - exit_driverfs(); -} |