update hdmi driver: support 480p

[firefly-linux-kernel-4.4.55.git] / kernel / perf_event.c

diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 6e9a310307833513d01efd3c3c558624ad5f9bc0..183d437f4a0fb7c5ad96ad82ae3f6d28333e52e1 100644 (file)
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -3229,6 +3229,9 @@ static void perf_event_task_output(struct perf_event *event,
 
 static int perf_event_task_match(struct perf_event *event)
 {
+       if (event->state != PERF_EVENT_STATE_ACTIVE)
+               return 0;
+
        if (event->cpu != -1 && event->cpu != smp_processor_id())
                return 0;
 
@@ -3344,6 +3347,9 @@ static void perf_event_comm_output(struct perf_event *event,
 
 static int perf_event_comm_match(struct perf_event *event)
 {
+       if (event->state != PERF_EVENT_STATE_ACTIVE)
+               return 0;
+
        if (event->cpu != -1 && event->cpu != smp_processor_id())
                return 0;
 
@@ -3471,6 +3477,9 @@ static void perf_event_mmap_output(struct perf_event *event,
 static int perf_event_mmap_match(struct perf_event *event,
                                   struct perf_mmap_event *mmap_event)
 {
+       if (event->state != PERF_EVENT_STATE_ACTIVE)
+               return 0;
+
        if (event->cpu != -1 && event->cpu != smp_processor_id())
                return 0;
 
@@ -4501,8 +4510,8 @@ SYSCALL_DEFINE5(perf_event_open,
        struct perf_event_context *ctx;
        struct file *event_file = NULL;
        struct file *group_file = NULL;
+       int event_fd;
        int fput_needed = 0;
-       int fput_needed2 = 0;
        int err;
 
        /* for future expandability... */
@@ -4523,12 +4532,18 @@ SYSCALL_DEFINE5(perf_event_open,
                        return -EINVAL;
        }
 
+       event_fd = get_unused_fd_flags(O_RDWR);
+       if (event_fd < 0)
+               return event_fd;
+
        /*
         * Get the target context (task or percpu):
         */
        ctx = find_get_context(pid, cpu);
-       if (IS_ERR(ctx))
-               return PTR_ERR(ctx);
+       if (IS_ERR(ctx)) {
+               err = PTR_ERR(ctx);
+               goto err_fd;
+       }
 
        /*
         * Look up the group leader (we will attach this event to it):
@@ -4568,13 +4583,11 @@ SYSCALL_DEFINE5(perf_event_open,
        if (IS_ERR(event))
                goto err_put_context;
 
-       err = anon_inode_getfd("[perf_event]", &perf_fops, event, 0);
-       if (err < 0)
-               goto err_free_put_context;
-
-       event_file = fget_light(err, &fput_needed2);
-       if (!event_file)
+       event_file = anon_inode_getfile("[perf_event]", &perf_fops, event, O_RDWR);
+       if (IS_ERR(event_file)) {
+               err = PTR_ERR(event_file);
                goto err_free_put_context;
+       }
 
        if (flags & PERF_FLAG_FD_OUTPUT) {
                err = perf_event_set_output(event, group_fd);
@@ -4595,19 +4608,19 @@ SYSCALL_DEFINE5(perf_event_open,
        list_add_tail(&event->owner_entry, &current->perf_event_list);
        mutex_unlock(&current->perf_event_mutex);
 
-err_fput_free_put_context:
-       fput_light(event_file, fput_needed2);
+       fput_light(group_file, fput_needed);
+       fd_install(event_fd, event_file);
+       return event_fd;
 
+err_fput_free_put_context:
+       fput(event_file);
 err_free_put_context:
-       if (err < 0)
-               kfree(event);
-
+       free_event(event);
 err_put_context:
-       if (err < 0)
-               put_ctx(ctx);
-
        fput_light(group_file, fput_needed);
-
+       put_ctx(ctx);
+err_fd:
+       put_unused_fd(event_fd);
        return err;
 }
 
@@ -4972,12 +4985,22 @@ int perf_event_init_task(struct task_struct *child)
        return ret;
 }
 
+static void __init perf_event_init_all_cpus(void)
+{
+       int cpu;
+       struct perf_cpu_context *cpuctx;
+
+       for_each_possible_cpu(cpu) {
+               cpuctx = &per_cpu(perf_cpu_context, cpu);
+               __perf_event_init_context(&cpuctx->ctx, NULL);
+       }
+}
+
 static void __cpuinit perf_event_init_cpu(int cpu)
 {
        struct perf_cpu_context *cpuctx;
 
        cpuctx = &per_cpu(perf_cpu_context, cpu);
-       __perf_event_init_context(&cpuctx->ctx, NULL);
 
        spin_lock(&perf_resource_lock);
        cpuctx->max_pertask = perf_max_events - perf_reserved_percpu;
@@ -5048,6 +5071,7 @@ static struct notifier_block __cpuinitdata perf_cpu_nb = {
 
 void __init perf_event_init(void)
 {
+       perf_event_init_all_cpus();
        perf_cpu_notify(&perf_cpu_nb, (unsigned long)CPU_UP_PREPARE,
                        (void *)(long)smp_processor_id());
        perf_cpu_notify(&perf_cpu_nb, (unsigned long)CPU_ONLINE,