summaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorAvi Kivity <avi@redhat.com>2011-06-29 19:42:37 +0400
committerIngo Molnar <mingo@elte.hu>2011-07-01 13:06:40 +0400
commit26ca5c11fb45ae2b2ac7e3574b8db6b3a3c7d350 (patch)
tree01f430828eaacf7ba3e0eb541f8d946f3d855696 /include
parent0af3ac1fdb9d5c297b4b07c9e0172531d42b6716 (diff)
downloadlinux-26ca5c11fb45ae2b2ac7e3574b8db6b3a3c7d350.tar.xz
perf: export perf_event_refresh() to modules
KVM needs one-shot samples, since a PMC programmed to -X will fire after X events and then again after 2^40 events (i.e. variable period). Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1309362157-6596-4-git-send-email-avi@redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
-rw-r--r--include/linux/perf_event.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 2a08cacb1628..3f2711ccf910 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -955,6 +955,7 @@ extern void perf_pmu_disable(struct pmu *pmu);
extern void perf_pmu_enable(struct pmu *pmu);
extern int perf_event_task_disable(void);
extern int perf_event_task_enable(void);
+extern int perf_event_refresh(struct perf_event *event, int refresh);
extern void perf_event_update_userpage(struct perf_event *event);
extern int perf_event_release_kernel(struct perf_event *event);
extern struct perf_event *
@@ -1149,6 +1150,10 @@ static inline void perf_event_delayed_put(struct task_struct *task) { }
static inline void perf_event_print_debug(void) { }
static inline int perf_event_task_disable(void) { return -EINVAL; }
static inline int perf_event_task_enable(void) { return -EINVAL; }
+static inline int perf_event_refresh(struct perf_event *event, int refresh)
+{
+ return -EINVAL;
+}
static inline void
perf_sw_event(u32 event_id, u64 nr, struct pt_regs *regs, u64 addr) { }