diff options
Diffstat (limited to 'kernel/events/core.c')
| -rw-r--r-- | kernel/events/core.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index c61234b1a98..a6a9ec4cd8f 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -3348,7 +3348,7 @@ static void calc_timer_values(struct perf_event *event, *running = ctx_time - event->tstamp_running; } -void __weak perf_update_user_clock(struct perf_event_mmap_page *userpg, u64 now) +void __weak arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now) { } @@ -3398,7 +3398,7 @@ void perf_event_update_userpage(struct perf_event *event) userpg->time_running = running + atomic64_read(&event->child_total_time_running); - perf_update_user_clock(userpg, now); + arch_perf_update_userpage(userpg, now); barrier(); ++userpg->lock; @@ -7116,6 +7116,13 @@ void __init perf_event_init(void) /* do not patch jump label more than once per second */ jump_label_rate_limit(&perf_sched_events, HZ); + + /* + * Build time assertion that we keep the data_head at the intended + * location. IOW, validation we got the __reserved[] size right. + */ + BUILD_BUG_ON((offsetof(struct perf_event_mmap_page, data_head)) + != 1024); } static int __init perf_event_sysfs_init(void) @@ -7147,8 +7154,7 @@ unlock: device_initcall(perf_event_sysfs_init); #ifdef CONFIG_CGROUP_PERF -static struct cgroup_subsys_state *perf_cgroup_create( - struct cgroup_subsys *ss, struct cgroup *cont) +static struct cgroup_subsys_state *perf_cgroup_create(struct cgroup *cont) { struct perf_cgroup *jc; @@ -7165,8 +7171,7 @@ static struct cgroup_subsys_state *perf_cgroup_create( return &jc->css; } -static void perf_cgroup_destroy(struct cgroup_subsys *ss, - struct cgroup *cont) +static void perf_cgroup_destroy(struct cgroup *cont) { struct perf_cgroup *jc; jc = container_of(cgroup_subsys_state(cont, perf_subsys_id), @@ -7182,8 +7187,7 @@ static int __perf_cgroup_move(void *info) return 0; } -static void perf_cgroup_attach(struct cgroup_subsys *ss, struct cgroup *cgrp, - struct cgroup_taskset *tset) +static void perf_cgroup_attach(struct cgroup *cgrp, struct cgroup_taskset *tset) { struct task_struct *task; @@ -7191,8 +7195,8 @@ static void perf_cgroup_attach(struct cgroup_subsys *ss, struct cgroup *cgrp, task_function_call(task, __perf_cgroup_move, task); } -static void perf_cgroup_exit(struct cgroup_subsys *ss, struct cgroup *cgrp, - struct cgroup *old_cgrp, struct task_struct *task) +static void perf_cgroup_exit(struct cgroup *cgrp, struct cgroup *old_cgrp, + struct task_struct *task) { /* * cgroup_exit() is called in the copy_process() failure path. |