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Tue, 24 Aug 2021 01:33:11 -0700 (PDT) Date: Tue, 24 Aug 2021 16:33:05 +0800 From: Leo Yan To: James Clark Cc: mathieu.poirier@linaro.org, coresight@lists.linaro.org, linux-perf-users@vger.kernel.org, mike.leach@linaro.org, acme@kernel.org, suzuki.poulose@arm.com, John Garry , Will Deacon , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 7/9] perf cs-etm: Create ETE decoder Message-ID: <20210824083305.GE204566@leoy-ThinkPad-X240s> References: <20210806134109.1182235-1-james.clark@arm.com> <20210806134109.1182235-8-james.clark@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210806134109.1182235-8-james.clark@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210824_013323_640971_8C964577 X-CRM114-Status: GOOD ( 24.33 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 > > --- > .../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 > + 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 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel