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Thu, 19 Jun 2025 07:20:45 -0700 (PDT) Message-ID: <6f6bf9c5-375f-404a-8bf6-63b262c72158@linaro.org> Date: Thu, 19 Jun 2025 15:20:44 +0100 Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 05/12] perf arm_spe: Decode event types for new features To: Leo Yan Cc: Arnaldo Carvalho de Melo , linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, Will Deacon , Mark Rutland , Arnaldo Carvalho de Melo , Namhyung Kim , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter References: <20250613-arm_spe_support_hitm_overhead_v1_public-v1-0-6faecf0a8775@arm.com> <20250613-arm_spe_support_hitm_overhead_v1_public-v1-5-6faecf0a8775@arm.com> Content-Language: en-US From: James Clark In-Reply-To: <20250613-arm_spe_support_hitm_overhead_v1_public-v1-5-6faecf0a8775@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 13/06/2025 4:53 pm, Leo Yan wrote: > Decode new event types introduced by FEAT_SPEv1p4, FEAT_SPE_SME and > FEAT_SPE_SME. > > The printed event names don't strictly follow the naming in the Arm ARM. > For example, the "Cache data modified" event is shown as "HITM", and the > "Data snooped" event is printed as "SNOOPED". Shorter names are easier > to read and review while preserving core meanings. > Reviewed-by: James Clark > Signed-off-by: Leo Yan > --- > tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c | 14 ++++++++++++++ > tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h | 7 +++++++ > 2 files changed, 21 insertions(+) > > diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c > index 13cadb2f1ceac7a90e359c4d6aa1d5fc5169e142..80561630253dd5c46f7e99b24fc13b99f346459f 100644 > --- a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c > +++ b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c > @@ -314,6 +314,20 @@ static int arm_spe_pkt_desc_event(const struct arm_spe_pkt *packet, > arm_spe_pkt_out_string(&err, &buf, &buf_len, " SVE-PARTIAL-PRED"); > if (payload & BIT(EV_EMPTY_PREDICATE)) > arm_spe_pkt_out_string(&err, &buf, &buf_len, " SVE-EMPTY-PRED"); > + if (payload & BIT(EV_L2D_ACCESS)) > + arm_spe_pkt_out_string(&err, &buf, &buf_len, " L2D-ACCESS"); > + if (payload & BIT(EV_L2D_MISS)) > + arm_spe_pkt_out_string(&err, &buf, &buf_len, " L2D-MISS"); > + if (payload & BIT(EV_CACHE_DATA_MODIFIED)) > + arm_spe_pkt_out_string(&err, &buf, &buf_len, " HITM"); > + if (payload & BIT(EV_RECENTLY_FETCHED)) > + arm_spe_pkt_out_string(&err, &buf, &buf_len, " LFB"); > + if (payload & BIT(EV_DATA_SNOOPED)) > + arm_spe_pkt_out_string(&err, &buf, &buf_len, " SNOOPED"); > + if (payload & BIT(EV_STREAMING_SVE_MODE)) > + arm_spe_pkt_out_string(&err, &buf, &buf_len, " STREAMING-SVE"); > + if (payload & BIT(EV_SMCU)) > + arm_spe_pkt_out_string(&err, &buf, &buf_len, " SMCU"); > > return err; > } > diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h > index 2cdf9f6da2681244291445d54c5b13fe8a2e9d9a..d00c2481712dcc457eab2f5e9848ffc3150e6236 100644 > --- a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h > +++ b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h > @@ -108,6 +108,13 @@ enum arm_spe_events { > EV_TRANSACTIONAL = 16, > EV_PARTIAL_PREDICATE = 17, > EV_EMPTY_PREDICATE = 18, > + EV_L2D_ACCESS = 19, > + EV_L2D_MISS = 20, > + EV_CACHE_DATA_MODIFIED = 21, > + EV_RECENTLY_FETCHED = 22, > + EV_DATA_SNOOPED = 23, > + EV_STREAMING_SVE_MODE = 24, > + EV_SMCU = 25, > }; > > /* Operation packet header */ >