Merge branch 'perf/urgent' into perf/core

[platform/adaptation/renesas_rcar/renesas_kernel.git] / kernel / events / internal.h

diff --git a/kernel/events/internal.h b/kernel/events/internal.h
index 09097dd..b0b107f 100644 (file)
--- a/kernel/events/internal.h
+++ b/kernel/events/internal.h
@@ -1,6 +1,10 @@
 #ifndef _KERNEL_EVENTS_INTERNAL_H
 #define _KERNEL_EVENTS_INTERNAL_H
 
+#include <linux/hardirq.h>
+
+/* Buffer handling */
+
 #define RING_BUFFER_WRITABLE           0x01
 
 struct ring_buffer {
@@ -22,6 +26,9 @@ struct ring_buffer {
        local_t                         lost;           /* nr records lost   */
 
        long                            watermark;      /* wakeup watermark  */
+       /* poll crap */
+       spinlock_t                      event_lock;
+       struct list_head                event_list;
 
        struct perf_event_mmap_page     *user_page;
        void                            *data_pages[0];
@@ -64,7 +71,7 @@ static inline int page_order(struct ring_buffer *rb)
 }
 #endif
 
-static unsigned long perf_data_size(struct ring_buffer *rb)
+static inline unsigned long perf_data_size(struct ring_buffer *rb)
 {
        return rb->nr_pages << (PAGE_SHIFT + page_order(rb));
 }
@@ -93,4 +100,37 @@ __output_copy(struct perf_output_handle *handle,
        } while (len);
 }
 
+/* Callchain handling */
+extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs);
+extern int get_callchain_buffers(void);
+extern void put_callchain_buffers(void);
+
+static inline int get_recursion_context(int *recursion)
+{
+       int rctx;
+
+       if (in_nmi())
+               rctx = 3;
+       else if (in_irq())
+               rctx = 2;
+       else if (in_softirq())
+               rctx = 1;
+       else
+               rctx = 0;
+
+       if (recursion[rctx])
+               return -1;
+
+       recursion[rctx]++;
+       barrier();
+
+       return rctx;
+}
+
+static inline void put_recursion_context(int *recursion, int rctx)
+{
+       barrier();
+       recursion[rctx]--;
+}
+
 #endif /* _KERNEL_EVENTS_INTERNAL_H */