summaryrefslogtreecommitdiffstats
path: root/tools/perf
diff options
context:
space:
mode:
authorMike Leach <mike.leach@linaro.org>2017-08-02 10:22:19 -0600
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-08-28 17:35:43 +0200
commitdf770ff0586a494fabe68ffbe2898d7df5666663 (patch)
tree4ad7e71b3ba91349f08111a3c2bb431d0277fd47 /tools/perf
parent4da69f49e73e3c79f079de62ea940cabbbf15ae7 (diff)
downloadlinux-df770ff0586a494fabe68ffbe2898d7df5666663.tar.bz2
perf: cs-etm: Fix ETMv4 CONFIGR entry in perf.data file
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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/arch/arm/util/cs-etm.c28
1 files changed, 27 insertions, 1 deletions
diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c
index 7ce3d1a25133..fbfc055d3f4d 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);