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AJvYcCW+GXeCiUN0Bt22RKVIUslDGmSr+Odv6uvx5hoy6XDYEW4V2DdtAmtuqOcKlyRnVTiJD8oMKwK3A9kiRRMlWGF5ZptR23Q1pRnbE2DC X-Gm-Message-State: AOJu0YzJ2GKyYGWf5+Zz+rw8TsJ210BmgxO0yoAKmz+o7UJYPZ0Eg3Td WZKf4pzXc1oDZz6/usZsHYVZX3L+7AfxWUwIxkn1P1A8AZEn+v4DRtWLIL/qk5N8Zp5SV87eyLB owBolzg== X-Google-Smtp-Source: AGHT+IGg3LRJosB9auNcaghrQgueNTv/MMX58STgLkl4G0wV2VDI1N2aFQK4MBeoUYtE82hs2DHfVEmhWdmH X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:78c9:5e58:734f:c59f]) (user=irogers job=sendgmr) by 2002:a05:690c:4c82:b0:6b2:7ff8:ca3 with SMTP id 00721157ae682-6b280074fafmr1410557b3.4.1723877103765; Fri, 16 Aug 2024 23:45:03 -0700 (PDT) Date: Fri, 16 Aug 2024 23:44:30 -0700 In-Reply-To: <20240817064442.2152089-1-irogers@google.com> Message-Id: <20240817064442.2152089-2-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240817064442.2152089-1-irogers@google.com> X-Mailer: git-send-email 2.46.0.184.g6999bdac58-goog Subject: [PATCH v1 01/13] perf synthetic-events: Avoid unnecessary memset From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Kan Liang , Masahiro Yamada , Arnd Bergmann , Jann Horn , Colin Ian King , Casey Chen , Athira Rajeev , Chaitanya S Prakash , James Clark , Ze Gao , Yang Jihong , Yunseong Kim , Weilin Wang , Dominique Martinet , Anne Macedo , Sun Haiyong , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Make sure the memset of a synthesized event only zeros the necessary tracing data part of the event, as a full event can be over 4kb in size. Signed-off-by: Ian Rogers --- tools/perf/util/synthetic-events.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/util/synthetic-events.c b/tools/perf/util/synthetic= -events.c index 7f884d70de81..0a7f93ae76fb 100644 --- a/tools/perf/util/synthetic-events.c +++ b/tools/perf/util/synthetic-events.c @@ -2200,7 +2200,7 @@ int perf_event__synthesize_tracing_data(const struct = perf_tool *tool, int fd, st if (!tdata) return -1; =20 - memset(&ev, 0, sizeof(ev)); + memset(&ev, 0, sizeof(ev.tracing_data)); =20 ev.tracing_data.header.type =3D PERF_RECORD_HEADER_TRACING_DATA; size =3D tdata->size; --=20 2.46.0.184.g6999bdac58-goog