Use lockdep to check that IRQs are enabled or disabled as expected. This way the sanity check only shows overhead when concurrency correctness debug code is enabled.
Signed-off-by: Frederic Weisbecker <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Paul E. McKenney <[email protected]> --- kernel/events/core.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index 8fd2f2d..6ea4c98 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -209,7 +209,7 @@ static int event_function(void *info) struct perf_event_context *task_ctx = cpuctx->task_ctx; int ret = 0; - WARN_ON_ONCE(!irqs_disabled()); + lockdep_assert_irqs_disabled(); perf_ctx_lock(cpuctx, task_ctx); /* @@ -306,7 +306,7 @@ static void event_function_local(struct perf_event *event, event_f func, void *d struct task_struct *task = READ_ONCE(ctx->task); struct perf_event_context *task_ctx = NULL; - WARN_ON_ONCE(!irqs_disabled()); + lockdep_assert_irqs_disabled(); if (task) { if (task == TASK_TOMBSTONE) @@ -1004,7 +1004,7 @@ static enum hrtimer_restart perf_mux_hrtimer_handler(struct hrtimer *hr) struct perf_cpu_context *cpuctx; int rotations = 0; - WARN_ON(!irqs_disabled()); + lockdep_assert_irqs_disabled(); cpuctx = container_of(hr, struct perf_cpu_context, hrtimer); rotations = perf_rotate_context(cpuctx); @@ -1091,7 +1091,7 @@ static void perf_event_ctx_activate(struct perf_event_context *ctx) { struct list_head *head = this_cpu_ptr(&active_ctx_list); - WARN_ON(!irqs_disabled()); + lockdep_assert_irqs_disabled(); WARN_ON(!list_empty(&ctx->active_ctx_list)); @@ -1100,7 +1100,7 @@ static void perf_event_ctx_activate(struct perf_event_context *ctx) static void perf_event_ctx_deactivate(struct perf_event_context *ctx) { - WARN_ON(!irqs_disabled()); + lockdep_assert_irqs_disabled(); WARN_ON(list_empty(&ctx->active_ctx_list)); @@ -3521,7 +3521,7 @@ void perf_event_task_tick(void) struct perf_event_context *ctx, *tmp; int throttled; - WARN_ON(!irqs_disabled()); + lockdep_assert_irqs_disabled(); __this_cpu_inc(perf_throttled_seq); throttled = __this_cpu_xchg(perf_throttled_count, 0); -- 2.7.4
