[PATCH v3 1/4] Add two elements for perf_tool struct, and add three elements for perf_evsel struct, and add the per-event-dump option for perf script

[ufo19890607]

From: yuzhoujian <yuzhouj...@didichuxing.com>

This patch will add two elements for per_tool struct: per_event_dump
is used to mark the per-event-dump option, last_evsel_name is used
to save last evsel's name, and add three elements for perf_evsel struct:
dump_event_fp is used to save the file pointer of the dump_event file,
filename is used to save the file name of the dump_event file, samples
is used to save the number of samples for each evsel, and add the
OPT_BOOLEAN for per-event-dump in the perf_data_file struct.

Changes since v2:
- add the last_evsel_name for per_tool struct to save last evsel's name.
- add three elements for perf_evsel struct:dump_event_fp is used to save
 the file pointer of the dump_event file, filename is used to save the file
 name of the dump_event file, samples is used to save the number of samples
 for each evsel.

Changes since v1:
- remove the set for script.tool.per_event_dump variable,since the OPT_BOOLEAN
 will do the same thing.

Signed-off-by: yuzhoujian <yuzhouj...@didichuxing.com>
---
 tools/perf/builtin-script.c | 3 +++
 tools/perf/util/evsel.h     | 4 ++++
 tools/perf/util/tool.h      | 3 +++
 3 files changed, 10 insertions(+)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 7167df2..4ffa716 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -2729,6 +2729,7 @@ 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 = {
@@ -2799,6 +2800,8 @@ 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"),
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index db65878..b1fb949 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -4,6 +4,7 @@
 #include <linux/list.h>
 #include <stdbool.h>
 #include <stddef.h>
+#include <stdio.h>
 #include <linux/perf_event.h>
 #include <linux/types.h>
 #include "xyarray.h"
@@ -128,9 +129,11 @@ struct perf_evsel {
        unsigned long           *per_pkg_mask;
        struct perf_evsel       *leader;
        char                    *group_name;
+       char                    *filename;
        bool                    cmdline_group_boundary;
        struct list_head        config_terms;
        int                     bpf_fd;
+       unsigned long           samples;
        bool                    auto_merge_stats;
        bool                    merged_stat;
        const char *            metric_expr;
@@ -138,6 +141,7 @@ struct perf_evsel {
        struct perf_evsel       **metric_events;
        bool                    collect_stat;
        bool                    weak_group;
+       FILE                    *dump_event_fp;
 };
 
 union u64_swap {
diff --git a/tools/perf/util/tool.h b/tools/perf/util/tool.h
index d549e50..c7ce621 100644
--- a/tools/perf/util/tool.h
+++ b/tools/perf/util/tool.h
@@ -2,6 +2,7 @@
 #define __PERF_TOOL_H
 
 #include <stdbool.h>
+#include <stdio.h>
 
 #include <linux/types.h>
 
@@ -75,6 +76,8 @@ struct perf_tool {
        bool            ordered_events;
        bool            ordering_requires_timestamps;
        bool            namespace_events;
+       bool            per_event_dump;
+       const char      *last_evsel_name;
        enum show_feature_header show_feat_hdr;
 };
 
-- 
1.8.3.1