Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

[pandora-kernel.git] / include / linux / perf_event.h

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index ace31fb..3fd5c82 100644 (file)
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -203,9 +203,19 @@ struct perf_event_attr {
                                enable_on_exec :  1, /* next exec enables     */
                                task           :  1, /* trace fork/exit       */
                                watermark      :  1, /* wakeup_watermark      */
-                               precise        :  1, /* OoO invariant counter */
-
-                               __reserved_1   : 48;
+                               /*
+                                * precise_ip:
+                                *
+                                *  0 - SAMPLE_IP can have arbitrary skid
+                                *  1 - SAMPLE_IP must have constant skid
+                                *  2 - SAMPLE_IP requested to have 0 skid
+                                *  3 - SAMPLE_IP must have 0 skid
+                                *
+                                *  See also PERF_RECORD_MISC_EXACT_IP
+                                */
+                               precise_ip     :  2, /* skid constraint       */
+
+                               __reserved_1   : 47;
 
        union {
                __u32           wakeup_events;    /* wakeup every n events */
@@ -296,7 +306,12 @@ struct perf_event_mmap_page {
 #define PERF_RECORD_MISC_GUEST_KERNEL          (4 << 0)
 #define PERF_RECORD_MISC_GUEST_USER            (5 << 0)
 
-#define PERF_RECORD_MISC_EXACT                 (1 << 14)
+/*
+ * Indicates that the content of PERF_SAMPLE_IP points to
+ * the actual instruction that triggered the event. See also
+ * perf_event_attr::precise_ip.
+ */
+#define PERF_RECORD_MISC_EXACT_IP              (1 << 14)
 /*
  * Reserve the last bit to indicate some extended misc field
  */
@@ -532,6 +547,8 @@ struct hw_perf_event {
 
 struct perf_event;
 
+#define PERF_EVENT_TXN_STARTED 1
+
 /**
  * struct pmu - generic performance monitoring unit
  */
@@ -542,6 +559,16 @@ struct pmu {
        void (*stop)                    (struct perf_event *event);
        void (*read)                    (struct perf_event *event);
        void (*unthrottle)              (struct perf_event *event);
+
+       /*
+        * group events scheduling is treated as a transaction,
+        * add group events as a whole and perform one schedulability test.
+        * If test fails, roll back the whole group
+        */
+
+       void (*start_txn)       (const struct pmu *pmu);
+       void (*cancel_txn)      (const struct pmu *pmu);
+       int  (*commit_txn)      (const struct pmu *pmu);
 };
 
 /**
@@ -807,9 +834,6 @@ extern void perf_disable(void);
 extern void perf_enable(void);
 extern int perf_event_task_disable(void);
 extern int perf_event_task_enable(void);
-extern int hw_perf_group_sched_in(struct perf_event *group_leader,
-              struct perf_cpu_context *cpuctx,
-              struct perf_event_context *ctx);
 extern void perf_event_update_userpage(struct perf_event *event);
 extern int perf_event_release_kernel(struct perf_event *event);
 extern struct perf_event *