linux-kernel - [tip: perf/urgent] perf: correct SNOOPX field offset

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Date:   Mon, 19 Oct 2020 17:44:41 -0000
From:   "tip-bot2 for Al Grant" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Al Grant <al.grant@...s.arm.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Andi Kleen <ak@...ux.intel.com>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: perf/urgent] perf: correct SNOOPX field offset

The following commit has been merged into the perf/urgent branch of tip:

Commit-ID:     f3d301c1f2f5676465cdf3259737ea19cc82731f
Gitweb:        https://git.kernel.org/tip/f3d301c1f2f5676465cdf3259737ea19cc82731f
Author:        Al Grant <al.grant@...s.arm.com>
AuthorDate:    Mon, 21 Sep 2020 21:46:37 +01:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Mon, 19 Oct 2020 19:39:22 +02:00

perf: correct SNOOPX field offset

perf_event.h has macros that define the field offsets in the
data_src bitmask in perf records. The SNOOPX and REMOTE offsets
were both 37. These are distinct fields, and the bitfield layout
in perf_mem_data_src confirms that SNOOPX should be at offset 38.

Fixes: 52839e653b5629bd ("perf tools: Add support for printing new mem_info encodings")
Signed-off-by: Al Grant <al.grant@...s.arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Andi Kleen <ak@...ux.intel.com>
Link: https://lkml.kernel.org/r/4ac9f5cc-4388-b34a-9999-418a4099415d@foss.arm.com
---
 include/uapi/linux/perf_event.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index 077e7ee..b95d3c4 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -1196,7 +1196,7 @@ union perf_mem_data_src {
 
 #define PERF_MEM_SNOOPX_FWD	0x01 /* forward */
 /* 1 free */
-#define PERF_MEM_SNOOPX_SHIFT	37
+#define PERF_MEM_SNOOPX_SHIFT  38
 
 /* locked instruction */
 #define PERF_MEM_LOCK_NA	0x01 /* not available */