linux-kernel - [PATCH] perf script: Show hw-cache events

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Date:   Fri,  8 Jun 2018 16:32:28 +0530
From:   Seeteena Thoufeek <s1seetee@...ux.vnet.ibm.com>
To:     peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
        alexander.shishkin@...ux.intel.com, jolsa@...hat.com,
        namhyung@...nel.org, linux-kernel@...r.kernel.org
Cc:     s1seetee@...ux.vnet.ibm.com
Subject: [PATCH] perf script: Show hw-cache events

perf script fails to report hardware cache events (PERF_TYPE_HW_CACHE)
where as perf report shows the samples. Fix it. Ex,

 # perf record -e L1-dcache-loads ./a.out
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.008 MB perf.data (11 samples)]

Before patch:
 # perf script | wc -l
 0
After patch:
 # perf script | wc -l
 11

Signed-off-by: Seeteena Thoufeek <s1seetee@...ux.vnet.ibm.com>
---
 tools/perf/builtin-script.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index cefc881..9e94bb7 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -180,6 +180,18 @@ enum {
 				  PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE
 	},
 
+	[PERF_TYPE_HW_CACHE] = {
+		.user_set = false,
+
+		.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
+			      PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
+			      PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
+			      PERF_OUTPUT_SYM | PERF_OUTPUT_SYMOFFSET |
+			      PERF_OUTPUT_DSO | PERF_OUTPUT_PERIOD,
+
+		.invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
+	},
+
 	[PERF_TYPE_RAW] = {
 		.user_set = false,
 
-- 
1.8.3.1