linux-kernel - [PATCH 1/4] Add a new element for the struct perf_tool, and add the --per-event-dump option for perf script

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Date:   Mon, 18 Sep 2017 13:55:19 +0800
From:   yuzhoujian <ufo19890607@...il.com>
To:     peterz@...radead.org, mingo@...hat.com,
        alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
        dsahern@...il.com, namhyung@...nel.org, milian.wolff@...b.com,
        arnaldo.melo@...il.com, yuzhoujian@...ichuxing.com
Cc:     linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/4] Add a new element for the struct perf_tool, and add the --per-event-dump option for perf script

Signed-off-by: yuzhoujian <yuzhoujian@...ichuxing.com>
---
 tools/perf/builtin-script.c | 11 ++++++++++-
 tools/perf/util/tool.h      |  1 +
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 378f76c..91b5225 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -57,6 +57,7 @@
 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
 static struct perf_stat_config	stat_config;
 static int			max_blocks;
+static FILE			*per_event_dump_file;
 
 unsigned int scripting_max_stack = PERF_MAX_STACK_DEPTH;
 
@@ -2690,6 +2691,7 @@ int cmd_script(int argc, const char **argv)
 			.cpu_map	 = process_cpu_map_event,
 			.ordered_events	 = true,
 			.ordering_requires_timestamps = true,
+			.per_event_dump = false,
 		},
 	};
 	struct perf_data_file file = {
@@ -2760,6 +2762,8 @@ int cmd_script(int argc, const char **argv)
 		    "Show context switch events (if recorded)"),
 	OPT_BOOLEAN('\0', "show-namespace-events", &script.show_namespace_events,
 		    "Show namespace events (if recorded)"),
+	OPT_BOOLEAN('\0', "per-event-dump", &script.tool.per_event_dump,
+		    "print trace output to files named by the monitored events"),
 	OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
 	OPT_INTEGER(0, "max-blocks", &max_blocks,
 		    "Maximum number of code blocks to dump with brstackinsn"),
@@ -2797,7 +2801,12 @@ int cmd_script(int argc, const char **argv)
 
 	file.path = input_name;
 	file.force = symbol_conf.force;
-
+	for (i = 1; argv[i] != NULL; i++) {
+		if (strcmp(argv[i], "--per-event-dump") == 0) {
+			script.tool.per_event_dump = true;
+			break;
+		}
+	}
 	if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
 		rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
 		if (!rec_script_path)
diff --git a/tools/perf/util/tool.h b/tools/perf/util/tool.h
index d549e50..ad40931 100644
--- a/tools/perf/util/tool.h
+++ b/tools/perf/util/tool.h
@@ -75,6 +75,7 @@ struct perf_tool {
 	bool		ordered_events;
 	bool		ordering_requires_timestamps;
 	bool		namespace_events;
+	bool		per_event_dump;
 	enum show_feature_header show_feat_hdr;
 };
 
-- 
1.8.3.1