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[V12,08/14] perf tools: Add aux_start_paused, aux_pause and aux_resume

Message ID 20241010143152.19071-9-adrian.hunter@intel.com (mailing list archive)
State New, archived
Headers show
Series [V12,01/14] perf/x86/intel/pt: Fix buffer full but size is 0 case | expand

Commit Message

Adrian Hunter Oct. 10, 2024, 2:31 p.m. UTC 
Add struct perf_event_attr members to support pause and resume of AUX area
tracing.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Ian Rogers <irogers@google.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
---
 tools/include/uapi/linux/perf_event.h     | 11 ++++++++++-
 tools/perf/util/perf_event_attr_fprintf.c |  3 +++
 2 files changed, 13 insertions(+), 1 deletion(-)
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Patch

diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
index 4842c36fdf80..0524d541d4e3 100644
--- a/tools/include/uapi/linux/perf_event.h
+++ b/tools/include/uapi/linux/perf_event.h
@@ -511,7 +511,16 @@  struct perf_event_attr {
 	__u16	sample_max_stack;
 	__u16	__reserved_2;
 	__u32	aux_sample_size;
-	__u32	__reserved_3;
+
+	union {
+		__u32	aux_action;
+		struct {
+			__u32	aux_start_paused :  1, /* start AUX area tracing paused */
+				aux_pause        :  1, /* on overflow, pause AUX area tracing */
+				aux_resume       :  1, /* on overflow, resume AUX area tracing */
+				__reserved_3     : 29;
+		};
+	};
 
 	/*
 	 * User provided data if sigtrap=1, passed back to user via
diff --git a/tools/perf/util/perf_event_attr_fprintf.c b/tools/perf/util/perf_event_attr_fprintf.c
index 59fbbba79697..29db0aef9a74 100644
--- a/tools/perf/util/perf_event_attr_fprintf.c
+++ b/tools/perf/util/perf_event_attr_fprintf.c
@@ -335,6 +335,9 @@  int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
 	PRINT_ATTRf(sample_max_stack, p_unsigned);
 	PRINT_ATTRf(aux_sample_size, p_unsigned);
 	PRINT_ATTRf(sig_data, p_unsigned);
+	PRINT_ATTRf(aux_start_paused, p_unsigned);
+	PRINT_ATTRf(aux_pause, p_unsigned);
+	PRINT_ATTRf(aux_resume, p_unsigned);
 
 	return ret;
 }