[PATCH 3/5] perf tools: Propagate error info for the tracepoint parsing

From: Jiri Olsa
Date: Mon Sep 07 2015 - 04:38:26 EST


Pass 'struct parse_events_error *error' to the parse-event.c
tracepoint adding path. It will be filled with error data
in following patches.

Link: http://lkml.kernel.org/n/tip-las1hm5zf58b0twd27h9895b@xxxxxxxxxxxxxx
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
tools/perf/util/parse-events.c | 27 ++++++++++++++++-----------
tools/perf/util/parse-events.h | 3 ++-
tools/perf/util/parse-events.y | 4 ++--
3 files changed, 20 insertions(+), 14 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 3840176642f8..1b284b8ad243 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -387,7 +387,8 @@ int parse_events_add_cache(struct list_head *list, int *idx,
}

static int add_tracepoint(struct list_head *list, int *idx,
- char *sys_name, char *evt_name)
+ char *sys_name, char *evt_name,
+ struct parse_events_error *error __maybe_unused)
{
struct perf_evsel *evsel;

@@ -401,7 +402,8 @@ static int add_tracepoint(struct list_head *list, int *idx,
}

static int add_tracepoint_multi_event(struct list_head *list, int *idx,
- char *sys_name, char *evt_name)
+ char *sys_name, char *evt_name,
+ struct parse_events_error *error)
{
char evt_path[MAXPATHLEN];
struct dirent *evt_ent;
@@ -425,7 +427,7 @@ static int add_tracepoint_multi_event(struct list_head *list, int *idx,
if (!strglobmatch(evt_ent->d_name, evt_name))
continue;

- ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name);
+ ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name, error);
}

closedir(evt_dir);
@@ -433,15 +435,17 @@ static int add_tracepoint_multi_event(struct list_head *list, int *idx,
}

static int add_tracepoint_event(struct list_head *list, int *idx,
- char *sys_name, char *evt_name)
+ char *sys_name, char *evt_name,
+ struct parse_events_error *error)
{
return strpbrk(evt_name, "*?") ?
- add_tracepoint_multi_event(list, idx, sys_name, evt_name) :
- add_tracepoint(list, idx, sys_name, evt_name);
+ add_tracepoint_multi_event(list, idx, sys_name, evt_name, error) :
+ add_tracepoint(list, idx, sys_name, evt_name, error);
}

static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
- char *sys_name, char *evt_name)
+ char *sys_name, char *evt_name,
+ struct parse_events_error *error)
{
struct dirent *events_ent;
DIR *events_dir;
@@ -465,7 +469,7 @@ static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
continue;

ret = add_tracepoint_event(list, idx, events_ent->d_name,
- evt_name);
+ evt_name, error);
}

closedir(events_dir);
@@ -473,12 +477,13 @@ static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
}

int parse_events_add_tracepoint(struct list_head *list, int *idx,
- char *sys, char *event)
+ char *sys, char *event,
+ struct parse_events_error *error)
{
if (strpbrk(sys, "*?"))
- return add_tracepoint_multi_sys(list, idx, sys, event);
+ return add_tracepoint_multi_sys(list, idx, sys, event, error);
else
- return add_tracepoint_event(list, idx, sys, event);
+ return add_tracepoint_event(list, idx, sys, event, error);
}

static int
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index a09b0e210997..ffee7ece75a6 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -118,7 +118,8 @@ int parse_events__modifier_event(struct list_head *list, char *str, bool add);
int parse_events__modifier_group(struct list_head *list, char *event_mod);
int parse_events_name(struct list_head *list, char *name);
int parse_events_add_tracepoint(struct list_head *list, int *idx,
- char *sys, char *event);
+ char *sys, char *event,
+ struct parse_events_error *error);
int parse_events_add_numeric(struct parse_events_evlist *data,
struct list_head *list,
u32 type, u64 config,
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 9cd70819c795..54a3004a8192 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -376,7 +376,7 @@ PE_NAME '-' PE_NAME ':' PE_NAME
snprintf(&sys_name, 128, "%s-%s", $1, $3);

ALLOC_LIST(list);
- ABORT_ON(parse_events_add_tracepoint(list, &data->idx, &sys_name, $5));
+ ABORT_ON(parse_events_add_tracepoint(list, &data->idx, &sys_name, $5, data->error));
$$ = list;
}
|
@@ -386,7 +386,7 @@ PE_NAME ':' PE_NAME
struct list_head *list;

ALLOC_LIST(list);
- if (parse_events_add_tracepoint(list, &data->idx, $1, $3)) {
+ if (parse_events_add_tracepoint(list, &data->idx, $1, $3, data->error)) {
struct parse_events_error *error = data->error;

if (error) {
--
2.4.3

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