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From: Howard Chu <howardchu95@gmail.com>
To: namhyung@kernel.org
Cc: irogers@google.com, acme@kernel.org, adrian.hunter@intel.com,
	jolsa@kernel.org, kan.liang@linux.intel.com,
	linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v4 6/9] perf evsel: Delete unnecessary = 0
Date: Wed,  7 Aug 2024 23:38:40 +0800	[thread overview]
Message-ID: <20240807153843.3231451-7-howardchu95@gmail.com> (raw)
In-Reply-To: <20240807153843.3231451-1-howardchu95@gmail.com>

Delete unnecessary zero-initializations because they are already set to
zero at the top of evsel__parse_sample(). If we don't remove them, it
becomes troublesome to overwrite the sample using data from raw_data.

Signed-off-by: Howard Chu <howardchu95@gmail.com>
---
 tools/perf/util/evsel.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index ccd3bda02b5d..c1aac09ad0a5 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -2611,8 +2611,6 @@ int evsel__parse_sample(struct evsel *evsel, union perf_event *event,
 		return perf_evsel__parse_id_sample(evsel, event, data);
 	}
 
-	array = event->sample.array;
-
 	if (perf_event__check_size(event, evsel->sample_size))
 		return -EFAULT;
 
@@ -2879,7 +2877,6 @@ int evsel__parse_sample(struct evsel *evsel, union perf_event *event,
 		array++;
 	}
 
-	data->intr_regs.abi = PERF_SAMPLE_REGS_ABI_NONE;
 	if (type & PERF_SAMPLE_REGS_INTR) {
 		OVERFLOW_CHECK_u64(array);
 		data->intr_regs.abi = *array;
@@ -2896,25 +2893,21 @@ int evsel__parse_sample(struct evsel *evsel, union perf_event *event,
 		}
 	}
 
-	data->phys_addr = 0;
 	if (type & PERF_SAMPLE_PHYS_ADDR) {
 		data->phys_addr = *array;
 		array++;
 	}
 
-	data->cgroup = 0;
 	if (type & PERF_SAMPLE_CGROUP) {
 		data->cgroup = *array;
 		array++;
 	}
 
-	data->data_page_size = 0;
 	if (type & PERF_SAMPLE_DATA_PAGE_SIZE) {
 		data->data_page_size = *array;
 		array++;
 	}
 
-	data->code_page_size = 0;
 	if (type & PERF_SAMPLE_CODE_PAGE_SIZE) {
 		data->code_page_size = *array;
 		array++;
-- 
2.45.2


  parent reply	other threads:[~2024-08-07 15:39 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-07 15:38 [PATCH v4 0/9] perf record --off-cpu: Dump off-cpu samples directly Howard Chu
2024-08-07 15:38 ` [PATCH v4 1/9] perf evsel: Set BPF output to system-wide Howard Chu
2024-08-07 23:21   ` Namhyung Kim
2024-08-08  3:58     ` Howard Chu
2024-09-25  2:53       ` Ian Rogers
2024-09-25  7:07         ` Howard Chu
2024-08-07 15:38 ` [PATCH v4 2/9] perf record --off-cpu: Add --off-cpu-thresh Howard Chu
2024-08-07 23:22   ` Namhyung Kim
2024-08-08  4:01     ` Howard Chu
2024-08-07 15:38 ` [PATCH v4 3/9] perf record --off-cpu: Parse offcpu-time event Howard Chu
2024-08-07 23:25   ` Namhyung Kim
2024-08-08  8:52     ` Howard Chu
2024-08-07 15:38 ` [PATCH v4 4/9] perf record off-cpu: Dump direct off-cpu samples in BPF Howard Chu
2024-08-07 23:49   ` Namhyung Kim
2024-08-08 11:57     ` Howard Chu
2024-08-07 15:38 ` [PATCH v4 5/9] perf record --off-cpu: Dump total off-cpu time at the end Howard Chu
2024-08-07 15:38 ` Howard Chu [this message]
2024-08-07 15:38 ` [PATCH v4 7/9] perf record --off-cpu: Parse BPF output embedded data Howard Chu
2024-08-07 15:38 ` [PATCH v4 8/9] perf header: Add field 'embed' Howard Chu
2024-08-07 23:52   ` Namhyung Kim
2024-08-08 13:57     ` Howard Chu
2024-08-07 15:38 ` [PATCH v4 9/9] perf test: Add direct off-cpu dumping test Howard Chu
2024-09-25  3:04 ` [PATCH v4 0/9] perf record --off-cpu: Dump off-cpu samples directly Ian Rogers
2024-09-25  6:59   ` Howard Chu

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