[PATCH 2/4] perf cs_etm: Keep separate symbols for ETMv4 and ETE parameters
From: German Gomez
Date: Wed May 04 2022 - 11:02:58 EST
Previously, adding a new parameter at the end of ETMv4 meant adding it
somewhere in the middle of ETE, which is not supported by the current
header version.
Signed-off-by: German Gomez <german.gomez@xxxxxxx>
---
tools/perf/arch/arm/util/cs-etm.c | 43 +++++++++++++++++++++++++-----
tools/perf/util/cs-etm.c | 44 +++++++++++++++++++++----------
tools/perf/util/cs-etm.h | 11 +++++++-
3 files changed, 76 insertions(+), 22 deletions(-)
diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c
index 11c71aa219f7..4899eb549b4d 100644
--- a/tools/perf/arch/arm/util/cs-etm.c
+++ b/tools/perf/arch/arm/util/cs-etm.c
@@ -53,7 +53,15 @@ static const char * const metadata_etmv4_ro[] = {
[CS_ETMV4_TRCIDR2] = "trcidr/trcidr2",
[CS_ETMV4_TRCIDR8] = "trcidr/trcidr8",
[CS_ETMV4_TRCAUTHSTATUS] = "mgmt/trcauthstatus",
- [CS_ETE_TRCDEVARCH] = "mgmt/trcdevarch"
+};
+
+static const char * const metadata_ete_ro[] = {
+ [CS_ETE_TRCIDR0] = "trcidr/trcidr0",
+ [CS_ETE_TRCIDR1] = "trcidr/trcidr1",
+ [CS_ETE_TRCIDR2] = "trcidr/trcidr2",
+ [CS_ETE_TRCIDR8] = "trcidr/trcidr8",
+ [CS_ETE_TRCAUTHSTATUS] = "mgmt/trcauthstatus",
+ [CS_ETE_TRCDEVARCH] = "mgmt/trcdevarch",
};
static bool cs_etm_is_etmv4(struct auxtrace_record *itr, int cpu);
@@ -616,7 +624,7 @@ static bool cs_etm_is_ete(struct auxtrace_record *itr, int cpu)
{
struct cs_etm_recording *ptr = container_of(itr, struct cs_etm_recording, itr);
struct perf_pmu *cs_etm_pmu = ptr->cs_etm_pmu;
- int trcdevarch = cs_etm_get_ro(cs_etm_pmu, cpu, metadata_etmv4_ro[CS_ETE_TRCDEVARCH]);
+ int trcdevarch = cs_etm_get_ro(cs_etm_pmu, cpu, metadata_ete_ro[CS_ETE_TRCDEVARCH]);
/*
* ETE if ARCHVER is 5 (ARCHVER is 4 for ETM) and ARCHPART is 0xA13.
@@ -647,6 +655,31 @@ static void cs_etm_save_etmv4_header(__u64 data[], struct auxtrace_record *itr,
metadata_etmv4_ro[CS_ETMV4_TRCAUTHSTATUS]);
}
+static void cs_etm_save_ete_header(__u64 data[], struct auxtrace_record *itr, int cpu)
+{
+ struct cs_etm_recording *ptr = container_of(itr, struct cs_etm_recording, itr);
+ struct perf_pmu *cs_etm_pmu = ptr->cs_etm_pmu;
+
+ /* Get trace configuration register */
+ data[CS_ETE_TRCCONFIGR] = cs_etmv4_get_config(itr);
+ /* Get traceID from the framework */
+ data[CS_ETE_TRCTRACEIDR] = coresight_get_trace_id(cpu);
+ /* Get read-only information from sysFS */
+ data[CS_ETE_TRCIDR0] = cs_etm_get_ro(cs_etm_pmu, cpu,
+ metadata_ete_ro[CS_ETE_TRCIDR0]);
+ data[CS_ETE_TRCIDR1] = cs_etm_get_ro(cs_etm_pmu, cpu,
+ metadata_ete_ro[CS_ETE_TRCIDR1]);
+ data[CS_ETE_TRCIDR2] = cs_etm_get_ro(cs_etm_pmu, cpu,
+ metadata_ete_ro[CS_ETE_TRCIDR2]);
+ data[CS_ETE_TRCIDR8] = cs_etm_get_ro(cs_etm_pmu, cpu,
+ metadata_ete_ro[CS_ETE_TRCIDR8]);
+ data[CS_ETE_TRCAUTHSTATUS] = cs_etm_get_ro(cs_etm_pmu, cpu,
+ metadata_ete_ro[CS_ETE_TRCAUTHSTATUS]);
+ /* ETE uses the same registers as ETMv4 plus TRCDEVARCH */
+ data[CS_ETE_TRCDEVARCH] = cs_etm_get_ro(cs_etm_pmu, cpu,
+ metadata_ete_ro[CS_ETE_TRCDEVARCH]);
+}
+
static void cs_etm_get_metadata(int cpu, u32 *offset,
struct auxtrace_record *itr,
struct perf_record_auxtrace_info *info)
@@ -660,11 +693,7 @@ static void cs_etm_get_metadata(int cpu, u32 *offset,
/* first see what kind of tracer this cpu is affined to */
if (cs_etm_is_ete(itr, cpu)) {
magic = __perf_cs_ete_magic;
- /* ETE uses the same registers as ETMv4 plus TRCDEVARCH */
- cs_etm_save_etmv4_header(&info->priv[*offset], itr, cpu);
- info->priv[*offset + CS_ETE_TRCDEVARCH] =
- cs_etm_get_ro(cs_etm_pmu, cpu,
- metadata_etmv4_ro[CS_ETE_TRCDEVARCH]);
+ cs_etm_save_ete_header(&info->priv[*offset], itr, cpu);
/* How much space was used */
increment = CS_ETE_PRIV_MAX;
diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 8b95fb3c4d7b..5991a1a46b5c 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -464,12 +464,12 @@ static void cs_etm__set_trace_param_ete(struct cs_etm_trace_params *t_params,
u64 **metadata = etm->metadata;
t_params[idx].protocol = CS_ETM_PROTO_ETE;
- t_params[idx].ete.reg_idr0 = metadata[idx][CS_ETMV4_TRCIDR0];
- t_params[idx].ete.reg_idr1 = metadata[idx][CS_ETMV4_TRCIDR1];
- t_params[idx].ete.reg_idr2 = metadata[idx][CS_ETMV4_TRCIDR2];
- t_params[idx].ete.reg_idr8 = metadata[idx][CS_ETMV4_TRCIDR8];
- t_params[idx].ete.reg_configr = metadata[idx][CS_ETMV4_TRCCONFIGR];
- t_params[idx].ete.reg_traceidr = metadata[idx][CS_ETMV4_TRCTRACEIDR];
+ t_params[idx].ete.reg_idr0 = metadata[idx][CS_ETE_TRCIDR0];
+ t_params[idx].ete.reg_idr1 = metadata[idx][CS_ETE_TRCIDR1];
+ t_params[idx].ete.reg_idr2 = metadata[idx][CS_ETE_TRCIDR2];
+ t_params[idx].ete.reg_idr8 = metadata[idx][CS_ETE_TRCIDR8];
+ t_params[idx].ete.reg_configr = metadata[idx][CS_ETE_TRCCONFIGR];
+ t_params[idx].ete.reg_traceidr = metadata[idx][CS_ETE_TRCTRACEIDR];
t_params[idx].ete.reg_devarch = metadata[idx][CS_ETE_TRCDEVARCH];
}
@@ -2537,7 +2537,20 @@ static const char * const cs_etmv4_priv_fmts[] = {
[CS_ETMV4_TRCIDR2] = " TRCIDR2 %llx\n",
[CS_ETMV4_TRCIDR8] = " TRCIDR8 %llx\n",
[CS_ETMV4_TRCAUTHSTATUS] = " TRCAUTHSTATUS %llx\n",
- [CS_ETE_TRCDEVARCH] = " TRCDEVARCH %llx\n"
+};
+
+static const char * const cs_ete_priv_fmts[] = {
+ [CS_ETM_MAGIC] = " Magic number %llx\n",
+ [CS_ETM_CPU] = " CPU %lld\n",
+ [CS_ETM_NR_TRC_PARAMS] = " NR_TRC_PARAMS %llx\n",
+ [CS_ETE_TRCCONFIGR] = " TRCCONFIGR %llx\n",
+ [CS_ETE_TRCTRACEIDR] = " TRCTRACEIDR %llx\n",
+ [CS_ETE_TRCIDR0] = " TRCIDR0 %llx\n",
+ [CS_ETE_TRCIDR1] = " TRCIDR1 %llx\n",
+ [CS_ETE_TRCIDR2] = " TRCIDR2 %llx\n",
+ [CS_ETE_TRCIDR8] = " TRCIDR8 %llx\n",
+ [CS_ETE_TRCAUTHSTATUS] = " TRCAUTHSTATUS %llx\n",
+ [CS_ETE_TRCDEVARCH] = " TRCDEVARCH %llx\n",
};
static const char * const param_unk_fmt =
@@ -2597,19 +2610,22 @@ static int cs_etm__print_cpu_metadata_v1(__u64 *val, int *offset)
else
fprintf(stdout, cs_etm_priv_fmts[j], val[i]);
}
- } else if (magic == __perf_cs_etmv4_magic || magic == __perf_cs_ete_magic) {
- /*
- * ETE and ETMv4 can be printed in the same block because the number of parameters
- * is saved and they share the list of parameter names. ETE is also only supported
- * in V1 files.
- */
+ } else if (magic == __perf_cs_etmv4_magic) {
for (j = 0; j < total_params; j++, i++) {
/* if newer record - could be excess params */
- if (j >= CS_ETE_PRIV_MAX)
+ if (j >= CS_ETMV4_PRIV_MAX)
fprintf(stdout, param_unk_fmt, j, val[i]);
else
fprintf(stdout, cs_etmv4_priv_fmts[j], val[i]);
}
+ } else if (magic == __perf_cs_ete_magic) {
+ for (j = 0; j < total_params; j++, i++) {
+ /* if newer record - could be excess params */
+ if (j >= CS_ETE_PRIV_MAX)
+ fprintf(stdout, param_unk_fmt, j, val[i]);
+ else
+ fprintf(stdout, cs_ete_priv_fmts[j], val[i]);
+ }
} else {
/* failure - note bad magic value and error out */
fprintf(stdout, magic_unk_fmt, magic);
diff --git a/tools/perf/util/cs-etm.h b/tools/perf/util/cs-etm.h
index 90c83f932d9a..817d068de98c 100644
--- a/tools/perf/util/cs-etm.h
+++ b/tools/perf/util/cs-etm.h
@@ -81,7 +81,16 @@ enum {
* added in header V1
*/
enum {
- CS_ETE_TRCDEVARCH = CS_ETMV4_PRIV_MAX,
+ /* Dynamic, configurable parameters */
+ CS_ETE_TRCCONFIGR = CS_ETM_COMMON_BLK_MAX_V1,
+ CS_ETE_TRCTRACEIDR,
+ /* RO, taken from sysFS */
+ CS_ETE_TRCIDR0,
+ CS_ETE_TRCIDR1,
+ CS_ETE_TRCIDR2,
+ CS_ETE_TRCIDR8,
+ CS_ETE_TRCAUTHSTATUS,
+ CS_ETE_TRCDEVARCH,
CS_ETE_PRIV_MAX
};
--
2.25.1