linux-arm-kernel.lists.infradead.org archive mirror
 help / color / mirror / Atom feed
* [PATCH v1] perf: cs-etm: Fix ETMv4 CONFIGR entry in perf.data file
@ 2017-07-12 17:01 Mike Leach
  2017-07-17 15:11 ` Mathieu Poirier
  2017-07-21 14:50 ` Mathieu Poirier
  0 siblings, 2 replies; 10+ messages in thread
From: Mike Leach @ 2017-07-12 17:01 UTC (permalink / raw)
  To: linux-arm-kernel

The value passed into the perf.data file for the CONFIGR register in ETMv4
was incorrectly being set to the command line options/ETMv3 value.

Adds bit definitions and function to remap this value to the correct ETMv4
CONFIGR bit values for all selected options.

Signed-off-by: Mike Leach <mike.leach@linaro.org>
---
Changes for v1:
 - Added more people to the recipient list.

 include/linux/coresight-pmu.h       |  5 +++++
 tools/include/linux/coresight-pmu.h |  5 +++++
 tools/perf/arch/arm/util/cs-etm.c   | 28 +++++++++++++++++++++++++++-
 3 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/include/linux/coresight-pmu.h b/include/linux/coresight-pmu.h
index 45852c2..edfeaba 100644
--- a/include/linux/coresight-pmu.h
+++ b/include/linux/coresight-pmu.h
@@ -26,6 +26,11 @@
 #define ETM_OPT_TS      28
 #define ETM_OPT_RETSTK	29
 
+/* ETMv4 CONFIGR programming bits for the ETM OPTs */
+#define ETM4_CFG_BIT_CYCACC	4
+#define ETM4_CFG_BIT_TS		11
+#define ETM4_CFG_BIT_RETSTK	12
+
 static inline int coresight_get_trace_id(int cpu)
 {
 	/*
diff --git a/tools/include/linux/coresight-pmu.h b/tools/include/linux/coresight-pmu.h
index 45852c2..edfeaba 100644
--- a/tools/include/linux/coresight-pmu.h
+++ b/tools/include/linux/coresight-pmu.h
@@ -26,6 +26,11 @@
 #define ETM_OPT_TS      28
 #define ETM_OPT_RETSTK	29
 
+/* ETMv4 CONFIGR programming bits for the ETM OPTs */
+#define ETM4_CFG_BIT_CYCACC	4
+#define ETM4_CFG_BIT_TS		11
+#define ETM4_CFG_BIT_RETSTK	12
+
 static inline int coresight_get_trace_id(int cpu)
 {
 	/*
diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c
index 29361d9..997734b 100644
--- a/tools/perf/arch/arm/util/cs-etm.c
+++ b/tools/perf/arch/arm/util/cs-etm.c
@@ -266,6 +266,32 @@ static u64 cs_etm_get_config(struct auxtrace_record *itr)
 	return config;
 }
 
+#ifndef BIT
+#define BIT(N) (1UL << (N))
+#endif
+
+static u64 cs_etmv4_get_config(struct auxtrace_record *itr)
+{
+	u64 config = 0;
+	u64 config_opts = 0;
+
+	/*
+	 * The perf event variable config bits represent both
+	 * the command line options and register programming
+	 * bits in ETMv3/PTM. For ETMv4 we must remap options
+	 * to real bits
+	 */
+	config_opts = cs_etm_get_config(itr);
+	if (config_opts & BIT(ETM_OPT_CYCACC))
+		config |= BIT(ETM4_CFG_BIT_CYCACC);
+	if (config_opts & BIT(ETM_OPT_TS))
+		config |= BIT(ETM4_CFG_BIT_TS);
+	if (config_opts & BIT(ETM_OPT_RETSTK))
+		config |= BIT(ETM4_CFG_BIT_RETSTK);
+
+	return config;
+}
+
 static size_t
 cs_etm_info_priv_size(struct auxtrace_record *itr __maybe_unused,
 		      struct perf_evlist *evlist __maybe_unused)
@@ -363,7 +389,7 @@ static void cs_etm_get_metadata(int cpu, u32 *offset,
 		magic = __perf_cs_etmv4_magic;
 		/* Get trace configuration register */
 		info->priv[*offset + CS_ETMV4_TRCCONFIGR] =
-						cs_etm_get_config(itr);
+						cs_etmv4_get_config(itr);
 		/* Get traceID from the framework */
 		info->priv[*offset + CS_ETMV4_TRCTRACEIDR] =
 						coresight_get_trace_id(cpu);
-- 
2.7.4

^ permalink raw reply related	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2017-08-01 16:44 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-07-12 17:01 [PATCH v1] perf: cs-etm: Fix ETMv4 CONFIGR entry in perf.data file Mike Leach
2017-07-17 15:11 ` Mathieu Poirier
2017-07-21 14:50 ` Mathieu Poirier
2017-07-21 16:19   ` Arnaldo Carvalho de Melo
2017-07-21 18:35     ` Arnaldo Carvalho de Melo
2017-07-21 18:37       ` Arnaldo Carvalho de Melo
2017-07-21 19:11         ` Arnaldo Carvalho de Melo
2017-07-24 19:37           ` Mathieu Poirier
2017-08-01 16:17             ` Mathieu Poirier
2017-08-01 16:44               ` Arnaldo Carvalho de Melo

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).