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authorPeter Zijlstra <peterz@infradead.org>2021-10-07 00:40:17 +0200
committerPeter Zijlstra <peterz@infradead.org>2021-10-07 00:40:17 +0200
commitb08cadbd3b8721db738d9a00ef3ce3ed667e6d9c (patch)
tree1b44ef760764ea19f82fd80088135d23ab565d2d /include/linux/perf_event.h
parentdb2b0c5d7b6f19b3c2cab08c531b65342eb5252b (diff)
parentfe255fe6ad97685e5a4be0d871f43288dbc10ad6 (diff)
Merge branch 'objtool/urgent'
Fixup conflicts. # Conflicts: # tools/objtool/check.c
Diffstat (limited to 'include/linux/perf_event.h')
-rw-r--r--include/linux/perf_event.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index fe156a8170aa..9b60bb89d86a 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -683,7 +683,9 @@ struct perf_event {
/*
* timestamp shadows the actual context timing but it can
* be safely used in NMI interrupt context. It reflects the
- * context time as it was when the event was last scheduled in.
+ * context time as it was when the event was last scheduled in,
+ * or when ctx_sched_in failed to schedule the event because we
+ * run out of PMC.
*
* ctx_time already accounts for ctx->timestamp. Therefore to
* compute ctx_time for a sample, simply add perf_clock().