diff mbox series

[v2,7/9] perf cs-etm: Create ETE decoder

Message ID 20210806134109.1182235-8-james.clark@arm.com (mailing list archive)
State New, archived
Headers show
Series Support ETE decoding | expand

Commit Message

James Clark Aug. 6, 2021, 1:41 p.m. UTC 
If the magic number indicates ETE instantiate a OCSD_BUILTIN_DCD_ETE
decoder instead of OCSD_BUILTIN_DCD_ETMV4I. ETE is the new trace feature
for Armv9.

Testing performed
=================

* Old files with v0 and v1 headers for ETMv4 still open correctly
* New files with new magic number open on new versions of perf
* New files with new magic number fail to open on old versions of perf
* Decoding with the ETE decoder results in the same output as the ETMv4
  decoder as long as there are no new ETE packet types

Signed-off-by: James Clark <james.clark@arm.com>
---
 .../perf/util/cs-etm-decoder/cs-etm-decoder.c | 20 +++++++++++++++++++
 .../perf/util/cs-etm-decoder/cs-etm-decoder.h | 12 +++++++++++
 tools/perf/util/cs-etm.c                      | 18 +++++++++++++++++
 3 files changed, 50 insertions(+)

Comments

Leo Yan Aug. 24, 2021, 8:33 a.m. UTC | #1 
On Fri, Aug 06, 2021 at 02:41:07PM +0100, James Clark wrote:
> If the magic number indicates ETE instantiate a OCSD_BUILTIN_DCD_ETE
> decoder instead of OCSD_BUILTIN_DCD_ETMV4I. ETE is the new trace feature
> for Armv9.
> 
> Testing performed
> =================
> 
> * Old files with v0 and v1 headers for ETMv4 still open correctly
> * New files with new magic number open on new versions of perf
> * New files with new magic number fail to open on old versions of perf
> * Decoding with the ETE decoder results in the same output as the ETMv4
>   decoder as long as there are no new ETE packet types
> 
> Signed-off-by: James Clark <james.clark@arm.com>
>
> ---
>  .../perf/util/cs-etm-decoder/cs-etm-decoder.c | 20 +++++++++++++++++++
>  .../perf/util/cs-etm-decoder/cs-etm-decoder.h | 12 +++++++++++
>  tools/perf/util/cs-etm.c                      | 18 +++++++++++++++++
>  3 files changed, 50 insertions(+)
> 
> diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
> index 12cee321fbf2..3071e5deddcc 100644
> --- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
> +++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
> @@ -156,6 +156,20 @@ static void cs_etm_decoder__gen_etmv4_config(struct cs_etm_trace_params *params,
>  	config->core_prof = profile_CortexA;
>  }
>  
> +static void cs_etm_decoder__gen_ete_config(struct cs_etm_trace_params *params,
> +					   ocsd_ete_cfg *config)
> +{
> +	config->reg_configr = params->ete.reg_configr;
> +	config->reg_traceidr = params->ete.reg_traceidr;
> +	config->reg_idr0 = params->ete.reg_idr0;
> +	config->reg_idr1 = params->ete.reg_idr1;
> +	config->reg_idr2 = params->ete.reg_idr2;
> +	config->reg_idr8 = params->ete.reg_idr8;
> +	config->reg_devarch = params->ete.reg_devarch;
> +	config->arch_ver = ARCH_AA64;

Just a nitpick: if we connect with patch 02, it implement function
cs_etm_decoder__get_etmv4_arch_ver().  We can extend it to a more
general function cs_etm_decoder__get_arch_ver(); this can allow us to
have a central place to calculate 'arch_ver' for different archs.

I understand your patch doesn't want to mix things between ETMv4 and
ETE, either way is okay for me:

Reviewed-by: Leo Yan <leo.yan@linaro.org>

> +	config->core_prof = profile_CortexA;
> +}
> +
>  static void cs_etm_decoder__print_str_cb(const void *p_context,
>  					 const char *msg,
>  					 const int str_len)
> @@ -603,6 +617,7 @@ cs_etm_decoder__create_etm_decoder(struct cs_etm_decoder_params *d_params,
>  	const char *decoder_name;
>  	ocsd_etmv3_cfg config_etmv3;
>  	ocsd_etmv4_cfg trace_config_etmv4;
> +	ocsd_ete_cfg trace_config_ete;
>  	void *trace_config;
>  	u8 csid;
>  
> @@ -620,6 +635,11 @@ cs_etm_decoder__create_etm_decoder(struct cs_etm_decoder_params *d_params,
>  		decoder_name = OCSD_BUILTIN_DCD_ETMV4I;
>  		trace_config = &trace_config_etmv4;
>  		break;
> +	case CS_ETM_PROTO_ETE:
> +		cs_etm_decoder__gen_ete_config(t_params, &trace_config_ete);
> +		decoder_name = OCSD_BUILTIN_DCD_ETE;
> +		trace_config = &trace_config_ete;
> +		break;
>  	default:
>  		return -1;
>  	}
> diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
> index 11f3391d06f2..0102ece5ca3e 100644
> --- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
> +++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
> @@ -37,11 +37,22 @@ struct cs_etmv4_trace_params {
>  	u32 reg_traceidr;
>  };
>  
> +struct cs_ete_trace_params {
> +	u32 reg_idr0;
> +	u32 reg_idr1;
> +	u32 reg_idr2;
> +	u32 reg_idr8;
> +	u32 reg_configr;
> +	u32 reg_traceidr;
> +	u32 reg_devarch;
> +};
> +
>  struct cs_etm_trace_params {
>  	int protocol;
>  	union {
>  		struct cs_etmv3_trace_params etmv3;
>  		struct cs_etmv4_trace_params etmv4;
> +		struct cs_ete_trace_params ete;
>  	};
>  };
>  
> @@ -65,6 +76,7 @@ enum {
>  	CS_ETM_PROTO_ETMV4i,
>  	CS_ETM_PROTO_ETMV4d,
>  	CS_ETM_PROTO_PTM,
> +	CS_ETM_PROTO_ETE
>  };
>  
>  enum cs_etm_decoder_operation {
> diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
> index d540512a3c96..e5649e9ea140 100644
> --- a/tools/perf/util/cs-etm.c
> +++ b/tools/perf/util/cs-etm.c
> @@ -460,6 +460,21 @@ static void cs_etm__set_trace_param_etmv4(struct cs_etm_trace_params *t_params,
>  	t_params[idx].etmv4.reg_traceidr = metadata[idx][CS_ETMV4_TRCTRACEIDR];
>  }
>  
> +static void cs_etm__set_trace_param_ete(struct cs_etm_trace_params *t_params,
> +					  struct cs_etm_auxtrace *etm, int idx)
> +{
> +	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_devarch = metadata[idx][CS_ETE_TRCDEVARCH];
> +}
> +
>  static int cs_etm__init_trace_params(struct cs_etm_trace_params *t_params,
>  				     struct cs_etm_auxtrace *etm,
>  				     int decoders)
> @@ -479,6 +494,9 @@ static int cs_etm__init_trace_params(struct cs_etm_trace_params *t_params,
>  		case __perf_cs_etmv4_magic:
>  			cs_etm__set_trace_param_etmv4(t_params, etm, i);
>  			break;
> +		case __perf_cs_ete_magic:
> +			cs_etm__set_trace_param_ete(t_params, etm, i);
> +			break;
>  		default:
>  			return -EINVAL;
>  		}
> -- 
> 2.28.0
>
James Clark Aug. 25, 2021, 10:13 a.m. UTC | #2 
On 24/08/2021 09:33, Leo Yan wrote:
>> +static void cs_etm_decoder__gen_ete_config(struct cs_etm_trace_params *params,
>> +					   ocsd_ete_cfg *config)
>> +{
>> +	config->reg_configr = params->ete.reg_configr;
>> +	config->reg_traceidr = params->ete.reg_traceidr;
>> +	config->reg_idr0 = params->ete.reg_idr0;
>> +	config->reg_idr1 = params->ete.reg_idr1;
>> +	config->reg_idr2 = params->ete.reg_idr2;
>> +	config->reg_idr8 = params->ete.reg_idr8;
>> +	config->reg_devarch = params->ete.reg_devarch;
>> +	config->arch_ver = ARCH_AA64;
> Just a nitpick: if we connect with patch 02, it implement function
> cs_etm_decoder__get_etmv4_arch_ver().  We can extend it to a more
> general function cs_etm_decoder__get_arch_ver(); this can allow us to
> have a central place to calculate 'arch_ver' for different archs.
> 
> I understand your patch doesn't want to mix things between ETMv4 and
> ETE, either way is okay for me:

Hi Leo,

Yes that was one of the previous comments from Mike that the logic only applied
to ETMv4 so I made it v4 specific. The other arch_vers are fixed at the moment.
If we get a new one that needs changing depending on some config we can try to
add a generic function.

> 
> Reviewed-by: Leo Yan <leo.yan@linaro.org>
>
Suzuki K Poulose Sept. 3, 2021, 9:15 a.m. UTC | #3 
On 06/08/2021 14:41, James Clark wrote:
> If the magic number indicates ETE instantiate a OCSD_BUILTIN_DCD_ETE
> decoder instead of OCSD_BUILTIN_DCD_ETMV4I. ETE is the new trace feature
> for Armv9.
> 
> Testing performed
> =================
> 
> * Old files with v0 and v1 headers for ETMv4 still open correctly
> * New files with new magic number open on new versions of perf
> * New files with new magic number fail to open on old versions of perf
> * Decoding with the ETE decoder results in the same output as the ETMv4
>    decoder as long as there are no new ETE packet types
> 
> Signed-off-by: James Clark <james.clark@arm.com>

Changes look good to me with my limited knowledge about the decoder
facing code.

FWIW,

Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Arnaldo Carvalho de Melo Sept. 3, 2021, 11:16 a.m. UTC | #4 
Em Fri, Sep 03, 2021 at 10:15:07AM +0100, Suzuki K Poulose escreveu:
> On 06/08/2021 14:41, James Clark wrote:
> > If the magic number indicates ETE instantiate a OCSD_BUILTIN_DCD_ETE
> > decoder instead of OCSD_BUILTIN_DCD_ETMV4I. ETE is the new trace feature
> > for Armv9.
> > 
> > Testing performed
> > =================
> > 
> > * Old files with v0 and v1 headers for ETMv4 still open correctly
> > * New files with new magic number open on new versions of perf
> > * New files with new magic number fail to open on old versions of perf
> > * Decoding with the ETE decoder results in the same output as the ETMv4
> >    decoder as long as there are no new ETE packet types
> > 
> > Signed-off-by: James Clark <james.clark@arm.com>
> 
> Changes look good to me with my limited knowledge about the decoder
> facing code.
> 
> FWIW,
> 
> Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>

Thanks, collected the Acked-by.

- Arnaldo
Mike Leach Sept. 5, 2021, 9:24 p.m. UTC | #5 
Reviewed-by: Mike Leach <mike.leach@linaro.org>


On Fri, 3 Sept 2021 at 12:16, Arnaldo Carvalho de Melo <acme@kernel.org> wrote:
>
> Em Fri, Sep 03, 2021 at 10:15:07AM +0100, Suzuki K Poulose escreveu:
> > On 06/08/2021 14:41, James Clark wrote:
> > > If the magic number indicates ETE instantiate a OCSD_BUILTIN_DCD_ETE
> > > decoder instead of OCSD_BUILTIN_DCD_ETMV4I. ETE is the new trace feature
> > > for Armv9.
> > >
> > > Testing performed
> > > =================
> > >
> > > * Old files with v0 and v1 headers for ETMv4 still open correctly
> > > * New files with new magic number open on new versions of perf
> > > * New files with new magic number fail to open on old versions of perf
> > > * Decoding with the ETE decoder results in the same output as the ETMv4
> > >    decoder as long as there are no new ETE packet types
> > >
> > > Signed-off-by: James Clark <james.clark@arm.com>
> >
> > Changes look good to me with my limited knowledge about the decoder
> > facing code.
> >
> > FWIW,
> >
> > Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
>
> Thanks, collected the Acked-by.
>
> - Arnaldo



--
Mike Leach
Principal Engineer, ARM Ltd.
Manchester Design Centre. UK
diff mbox series

Patch

diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
index 12cee321fbf2..3071e5deddcc 100644
--- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
+++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
@@ -156,6 +156,20 @@  static void cs_etm_decoder__gen_etmv4_config(struct cs_etm_trace_params *params,
 	config->core_prof = profile_CortexA;
 }
 
+static void cs_etm_decoder__gen_ete_config(struct cs_etm_trace_params *params,
+					   ocsd_ete_cfg *config)
+{
+	config->reg_configr = params->ete.reg_configr;
+	config->reg_traceidr = params->ete.reg_traceidr;
+	config->reg_idr0 = params->ete.reg_idr0;
+	config->reg_idr1 = params->ete.reg_idr1;
+	config->reg_idr2 = params->ete.reg_idr2;
+	config->reg_idr8 = params->ete.reg_idr8;
+	config->reg_devarch = params->ete.reg_devarch;
+	config->arch_ver = ARCH_AA64;
+	config->core_prof = profile_CortexA;
+}
+
 static void cs_etm_decoder__print_str_cb(const void *p_context,
 					 const char *msg,
 					 const int str_len)
@@ -603,6 +617,7 @@  cs_etm_decoder__create_etm_decoder(struct cs_etm_decoder_params *d_params,
 	const char *decoder_name;
 	ocsd_etmv3_cfg config_etmv3;
 	ocsd_etmv4_cfg trace_config_etmv4;
+	ocsd_ete_cfg trace_config_ete;
 	void *trace_config;
 	u8 csid;
 
@@ -620,6 +635,11 @@  cs_etm_decoder__create_etm_decoder(struct cs_etm_decoder_params *d_params,
 		decoder_name = OCSD_BUILTIN_DCD_ETMV4I;
 		trace_config = &trace_config_etmv4;
 		break;
+	case CS_ETM_PROTO_ETE:
+		cs_etm_decoder__gen_ete_config(t_params, &trace_config_ete);
+		decoder_name = OCSD_BUILTIN_DCD_ETE;
+		trace_config = &trace_config_ete;
+		break;
 	default:
 		return -1;
 	}
diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
index 11f3391d06f2..0102ece5ca3e 100644
--- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
+++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
@@ -37,11 +37,22 @@  struct cs_etmv4_trace_params {
 	u32 reg_traceidr;
 };
 
+struct cs_ete_trace_params {
+	u32 reg_idr0;
+	u32 reg_idr1;
+	u32 reg_idr2;
+	u32 reg_idr8;
+	u32 reg_configr;
+	u32 reg_traceidr;
+	u32 reg_devarch;
+};
+
 struct cs_etm_trace_params {
 	int protocol;
 	union {
 		struct cs_etmv3_trace_params etmv3;
 		struct cs_etmv4_trace_params etmv4;
+		struct cs_ete_trace_params ete;
 	};
 };
 
@@ -65,6 +76,7 @@  enum {
 	CS_ETM_PROTO_ETMV4i,
 	CS_ETM_PROTO_ETMV4d,
 	CS_ETM_PROTO_PTM,
+	CS_ETM_PROTO_ETE
 };
 
 enum cs_etm_decoder_operation {
diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index d540512a3c96..e5649e9ea140 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -460,6 +460,21 @@  static void cs_etm__set_trace_param_etmv4(struct cs_etm_trace_params *t_params,
 	t_params[idx].etmv4.reg_traceidr = metadata[idx][CS_ETMV4_TRCTRACEIDR];
 }
 
+static void cs_etm__set_trace_param_ete(struct cs_etm_trace_params *t_params,
+					  struct cs_etm_auxtrace *etm, int idx)
+{
+	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_devarch = metadata[idx][CS_ETE_TRCDEVARCH];
+}
+
 static int cs_etm__init_trace_params(struct cs_etm_trace_params *t_params,
 				     struct cs_etm_auxtrace *etm,
 				     int decoders)
@@ -479,6 +494,9 @@  static int cs_etm__init_trace_params(struct cs_etm_trace_params *t_params,
 		case __perf_cs_etmv4_magic:
 			cs_etm__set_trace_param_etmv4(t_params, etm, i);
 			break;
+		case __perf_cs_ete_magic:
+			cs_etm__set_trace_param_ete(t_params, etm, i);
+			break;
 		default:
 			return -EINVAL;
 		}