[v2,5/7] perf cs_etm: Keep separate symbols for ETMv4 and ETE parameters
Commit Message
From: German Gomez <german.gomez@arm.com>
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@arm.com>
Signed-off-by: James Clark <james.clark@arm.com>
---
tools/perf/arch/arm/util/cs-etm.c | 43 ++++++++++++++++++++++++++-----
tools/perf/util/cs-etm-base.c | 32 +++++++++++++++++------
tools/perf/util/cs-etm.c | 12 ++++-----
tools/perf/util/cs-etm.h | 11 +++++++-
4 files changed, 76 insertions(+), 22 deletions(-)
Comments
On Thu, 22 Dec 2022 at 16:07, James Clark <james.clark@arm.com> wrote:
>
> From: German Gomez <german.gomez@arm.com>
>
> 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@arm.com>
> Signed-off-by: James Clark <james.clark@arm.com>
> ---
> tools/perf/arch/arm/util/cs-etm.c | 43 ++++++++++++++++++++++++++-----
> tools/perf/util/cs-etm-base.c | 32 +++++++++++++++++------
> tools/perf/util/cs-etm.c | 12 ++++-----
> tools/perf/util/cs-etm.h | 11 +++++++-
> 4 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 a346d5f3dafa..b526ffe550a5 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);
> @@ -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;
> diff --git a/tools/perf/util/cs-etm-base.c b/tools/perf/util/cs-etm-base.c
> index 597542410854..282042c6e944 100644
> --- a/tools/perf/util/cs-etm-base.c
> +++ b/tools/perf/util/cs-etm-base.c
> @@ -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 =
> @@ -96,19 +109,22 @@ 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.c b/tools/perf/util/cs-etm.c
> index 33303d03c2fa..879576d5f899 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];
> }
>
> diff --git a/tools/perf/util/cs-etm.h b/tools/perf/util/cs-etm.h
> index 5da50d5dae6b..c5925428afa9 100644
> --- a/tools/perf/util/cs-etm.h
> +++ b/tools/perf/util/cs-etm.h
> @@ -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
> };
>
> --
> 2.25.1
>
Reviewed-by: Mike Leach <mike.leach@linaro.org>
@@ -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;
@@ -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 =
@@ -96,19 +109,22 @@ 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);
@@ -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];
}
@@ -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
};