Re: [PATCH V3 13/14] perf: aux: Add flags for the buffer format
From: Peter Zijlstra <peterz@infradead.org>
Date: 2021-01-27 12:55:13
Also in:
lkml
On Wed, Jan 27, 2021 at 02:25:37PM +0530, Anshuman Khandual wrote:
From: Suzuki K Poulose <suzuki.poulose@arm.com> Allocate a byte for advertising the PMU specific format type of the given AUX record. A PMU could end up providing hardware trace data in multiple format in a single session. e.g, The format of hardware buffer produced by CoreSight ETM PMU depends on the type of the "sink" device used for collection for an event (Traditional TMC-ETR/Bs with formatting or TRBEs without any formatting).
Acked-by: Peter Ziljstra <peterz@infradead.org>
quoted hunk ↗ jump to hunk
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Anshuman Khandual <redacted> --- include/uapi/linux/perf_event.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index b15e344..9a5ca45 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h@@ -1105,10 +1105,11 @@ enum perf_callchain_context { /** * PERF_RECORD_AUX::flags bits */ -#define PERF_AUX_FLAG_TRUNCATED 0x01 /* record was truncated to fit */ -#define PERF_AUX_FLAG_OVERWRITE 0x02 /* snapshot from overwrite mode */ -#define PERF_AUX_FLAG_PARTIAL 0x04 /* record contains gaps */ -#define PERF_AUX_FLAG_COLLISION 0x08 /* sample collided with another */ +#define PERF_AUX_FLAG_TRUNCATED 0x01 /* record was truncated to fit */ +#define PERF_AUX_FLAG_OVERWRITE 0x02 /* snapshot from overwrite mode */ +#define PERF_AUX_FLAG_PARTIAL 0x04 /* record contains gaps */ +#define PERF_AUX_FLAG_COLLISION 0x08 /* sample collided with another */ +#define PERF_AUX_FLAG_PMU_FORMAT_TYPE_MASK 0xff00 /* PMU specific trace format type */ #define PERF_FLAG_FD_NO_GROUP (1UL << 0) #define PERF_FLAG_FD_OUTPUT (1UL << 1)-- 2.7.4
_______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel