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perf cs_etm: Keep separate symbols for ETMv4 and ETE parameters

Browse Source 
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.

Reviewed-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: German Gomez <german.gomez@arm.com>
Acked-by: Suzuki Poulouse <suzuki.poulose@arm.com>
Tested-by: Tanmay Jagdale <tanmay@marvell.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Bharat Bhushan <bbhushan2@marvell.com>
Cc: George Cherian <gcherian@marvell.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Linu Cherian <lcherian@marvell.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Cc: Will Deacon <will@kernel.org>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20230120143702.4035046-6-james.clark@arm.com
Signed-off-by: James Clark <james.clark@arm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
German Gomez 2023-01-20 14:36:58 +00:00 committed by Arnaldo Carvalho de Melo
parent c2b6a8969c
commit 326163c552
4 changed files with 76 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
tools/perf/arch/arm/util/cs-etm.c
View File

@ -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);
@ -617,7 +625,7 @@ 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.
@ -648,6 +656,31 @@ 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)
@ -661,11 +694,7 @@ 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;

32
tools/perf/util/cs-etm-base.c
View File

@ -36,7 +36,20 @@ 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 =
@ -96,18 +109,21 @@ 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_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_etmv4_priv_fmts[j], val[i]);
fprintf(stdout, cs_ete_priv_fmts[j], val[i]);
}
} else {
/* failure - note bad magic value and error out */

12
tools/perf/util/cs-etm.c
View File

@ -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];
}

11
tools/perf/util/cs-etm.h
View File

@ -82,7 +82,16 @@ 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
};