#include <linux/refcount.h>
#include <linux/security.h>
#include <linux/static_call.h>
+#include <linux/lockdep.h>
#include <asm/local.h>
struct perf_callchain_entry {
struct list_head list;
};
+/*
+ * event->sibling_list is modified whole holding both ctx->lock and ctx->mutex
+ * as such iteration must hold either lock. However, since ctx->lock is an IRQ
+ * safe lock, and is only held by the CPU doing the modification, having IRQs
+ * disabled is sufficient since it will hold-off the IPIs.
+ */
+#ifdef CONFIG_PROVE_LOCKING
+#define lockdep_assert_event_ctx(event) \
+ WARN_ON_ONCE(__lockdep_enabled && \
+ (this_cpu_read(hardirqs_enabled) || \
+ lockdep_is_held(&(event)->ctx->mutex) != LOCK_STATE_HELD))
+#else
+#define lockdep_assert_event_ctx(event)
+#endif
+
#define for_each_sibling_event(sibling, event) \
+ lockdep_assert_event_ctx(event); \
if ((event)->group_leader == (event)) \
list_for_each_entry((sibling), &(event)->sibling_list, sibling_list)