diff options
Diffstat (limited to 'kernel/perf_counter.c')
| -rw-r--r-- | kernel/perf_counter.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c index 16b14ba99d3..b2e838959f3 100644 --- a/kernel/perf_counter.c +++ b/kernel/perf_counter.c @@ -1683,16 +1683,16 @@ perf_counter_alloc(struct perf_counter_hw_event *hw_event, } /** - * sys_perf_task_open - open a performance counter, associate it to a task/cpu + * sys_perf_counter_open - open a performance counter, associate it to a task/cpu * * @hw_event_uptr: event type attributes for monitoring/sampling * @pid: target pid * @cpu: target cpu * @group_fd: group leader counter fd */ -SYSCALL_DEFINE4(perf_counter_open, +SYSCALL_DEFINE5(perf_counter_open, const struct perf_counter_hw_event __user *, hw_event_uptr, - pid_t, pid, int, cpu, int, group_fd) + pid_t, pid, int, cpu, int, group_fd, unsigned long, flags) { struct perf_counter *counter, *group_leader; struct perf_counter_hw_event hw_event; @@ -1703,6 +1703,10 @@ SYSCALL_DEFINE4(perf_counter_open, int fput_needed2 = 0; int ret; + /* for future expandability... */ + if (flags) + return -EINVAL; + if (copy_from_user(&hw_event, hw_event_uptr, sizeof(hw_event)) != 0) return -EFAULT; |