lkml.org 
[lkml]   [2012]   [Apr]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4/6] perf, tool: Use allocated list for each parsed event
Date
Switch from using static temporary event list into dynamically
allocated one. This way we dont need to pass temp list to the
parse_events_parse which makes the interface more clear.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
---
tools/perf/util/parse-events.c | 39 ++++++++++++++---------
tools/perf/util/parse-events.h | 16 +++------
tools/perf/util/parse-events.y | 69 ++++++++++++++++++++++++++++++---------
3 files changed, 83 insertions(+), 41 deletions(-)
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 6704978..4025e18 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -26,8 +26,7 @@ struct event_symbol {
#ifdef PARSER_DEBUG
extern int parse_events_debug;
#endif
-int parse_events_parse(struct list_head *list, struct list_head *list_tmp,
- int *idx);
+int parse_events_parse(struct list_head *list, int *idx);

#define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x
#define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x
@@ -358,20 +357,30 @@ const char *__event_name(int type, u64 config)
return "unknown";
}

-static int add_event(struct list_head *list, int *idx,
+static int add_event(struct list_head **_list, int *idx,
struct perf_event_attr *attr, char *name)
{
struct perf_evsel *evsel;
+ struct list_head *list = *_list;
+
+ if (!list) {
+ list = malloc(sizeof(*list));
+ if (!list)
+ return -ENOMEM;
+ INIT_LIST_HEAD(list);
+ }

event_attr_init(attr);

evsel = perf_evsel__new(attr, (*idx)++);
- if (!evsel)
+ if (!evsel) {
+ free(list);
return -ENOMEM;
-
- list_add_tail(&evsel->node, list);
+ }

evsel->name = strdup(name);
+ list_add_tail(&evsel->node, list);
+ *_list = list;
return 0;
}

@@ -393,7 +402,7 @@ static int parse_aliases(char *str, const char *names[][MAX_ALIASES], int size)
return -1;
}

-int parse_events_add_cache(struct list_head *list, int *idx,
+int parse_events_add_cache(struct list_head **list, int *idx,
char *type, char *op_result1, char *op_result2)
{
struct perf_event_attr attr;
@@ -454,7 +463,7 @@ int parse_events_add_cache(struct list_head *list, int *idx,
return add_event(list, idx, &attr, name);
}

-static int add_tracepoint(struct list_head *list, int *idx,
+static int add_tracepoint(struct list_head **list, int *idx,
char *sys_name, char *evt_name)
{
struct perf_event_attr attr;
@@ -491,7 +500,7 @@ static int add_tracepoint(struct list_head *list, int *idx,
return add_event(list, idx, &attr, name);
}

-static int add_tracepoint_multi(struct list_head *list, int *idx,
+static int add_tracepoint_multi(struct list_head **list, int *idx,
char *sys_name, char *evt_name)
{
char evt_path[MAXPATHLEN];
@@ -522,7 +531,7 @@ static int add_tracepoint_multi(struct list_head *list, int *idx,
return ret;
}

-int parse_events_add_tracepoint(struct list_head *list, int *idx,
+int parse_events_add_tracepoint(struct list_head **list, int *idx,
char *sys, char *event)
{
int ret;
@@ -566,7 +575,7 @@ parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
return 0;
}

-int parse_events_add_breakpoint(struct list_head *list, int *idx,
+int parse_events_add_breakpoint(struct list_head **list, int *idx,
void *ptr, char *type)
{
struct perf_event_attr attr;
@@ -645,7 +654,7 @@ static int config_attr(struct perf_event_attr *attr,
return 0;
}

-int parse_events_add_numeric(struct list_head *list, int *idx,
+int parse_events_add_numeric(struct list_head **list, int *idx,
unsigned long type, unsigned long config,
struct list_head *head_config)
{
@@ -663,7 +672,7 @@ int parse_events_add_numeric(struct list_head *list, int *idx,
(char *) __event_name(type, config));
}

-int parse_events_add_pmu(struct list_head *list, int *idx,
+int parse_events_add_pmu(struct list_head **list, int *idx,
char *name, struct list_head *head_config)
{
struct perf_event_attr attr;
@@ -696,7 +705,7 @@ void parse_events_update_lists(struct list_head *list_event,
* list, for next event definition.
*/
list_splice_tail(list_event, list_all);
- INIT_LIST_HEAD(list_event);
+ free(list_event);
}

int parse_events_modifier(struct list_head *list, char *str)
@@ -774,7 +783,7 @@ int parse_events(struct perf_evlist *evlist, const char *str, int unset __used)
#ifdef PARSER_DEBUG
parse_events_debug = 1;
#endif
- ret = parse_events_parse(&list, &list_tmp, &idx);
+ ret = parse_events_parse(&list, &idx);

parse_events__flush_buffer(buffer);
parse_events__delete_buffer(buffer);
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 6f1f86c..5633b32 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -67,25 +67,21 @@ int parse_events__term_num(struct parse_events__term **_term,
int parse_events__term_str(struct parse_events__term **_term,
int type_term, char *config, char *str);
void parse_events__free_terms(struct list_head *terms);
-int parse_events_modifier(struct list_head *list __used, char *str __used);
-int parse_events_add_tracepoint(struct list_head *list, int *idx,
+int parse_events_modifier(struct list_head *list, char *str);
+int parse_events_add_tracepoint(struct list_head **list, int *idx,
char *sys, char *event);
-int parse_events_add_raw(struct perf_evlist *evlist, unsigned long config,
- unsigned long config1, unsigned long config2,
- char *mod);
-int parse_events_add_numeric(struct list_head *list, int *idx,
+int parse_events_add_numeric(struct list_head **list, int *idx,
unsigned long type, unsigned long config,
struct list_head *head_config);
-int parse_events_add_cache(struct list_head *list, int *idx,
+int parse_events_add_cache(struct list_head **list, int *idx,
char *type, char *op_result1, char *op_result2);
-int parse_events_add_breakpoint(struct list_head *list, int *idx,
+int parse_events_add_breakpoint(struct list_head **list, int *idx,
void *ptr, char *type);
-int parse_events_add_pmu(struct list_head *list, int *idx,
+int parse_events_add_pmu(struct list_head **list, int *idx,
char *pmu , struct list_head *head_config);
void parse_events_update_lists(struct list_head *list_event,
struct list_head *list_all);
void parse_events_error(struct list_head *list_all,
- struct list_head *list_event,
int *idx, char const *msg);
int parse_events__test(void);

diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 936913e..126fad0 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -1,7 +1,6 @@

%name-prefix "parse_events_"
%parse-param {struct list_head *list_all}
-%parse-param {struct list_head *list_event}
%parse-param {int *idx}

%{
@@ -41,6 +40,14 @@ do { \
%type <str> PE_MODIFIER_BP
%type <head> event_config
%type <term> event_term
+%type <head> event_pmu
+%type <head> event_legacy_symbol
+%type <head> event_legacy_cache
+%type <head> event_legacy_mem
+%type <head> event_legacy_tracepoint
+%type <head> event_legacy_numeric
+%type <head> event_legacy_raw
+%type <head> event_def

%union
{
@@ -62,13 +69,13 @@ event_def PE_MODIFIER_EVENT
* (there could be more events added for multiple tracepoint
* definitions via '*?'.
*/
- ABORT_ON(parse_events_modifier(list_event, $2));
- parse_events_update_lists(list_event, list_all);
+ ABORT_ON(parse_events_modifier($1, $2));
+ parse_events_update_lists($1, list_all);
}
|
event_def
{
- parse_events_update_lists(list_event, list_all);
+ parse_events_update_lists($1, list_all);
}

event_def: event_pmu |
@@ -82,71 +89,102 @@ event_def: event_pmu |
event_pmu:
PE_NAME '/' event_config '/'
{
- ABORT_ON(parse_events_add_pmu(list_event, idx, $1, $3));
+ struct list_head *list = NULL;
+
+ ABORT_ON(parse_events_add_pmu(&list, idx, $1, $3));
parse_events__free_terms($3);
+ $$ = list;
}

event_legacy_symbol:
PE_VALUE_SYM '/' event_config '/'
{
+ struct list_head *list = NULL;
int type = $1 >> 16;
int config = $1 & 255;

- ABORT_ON(parse_events_add_numeric(list_event, idx, type, config, $3));
+ ABORT_ON(parse_events_add_numeric(&list, idx, type, config, $3));
parse_events__free_terms($3);
+ $$ = list;
}
|
PE_VALUE_SYM sep_slash_dc
{
+ struct list_head *list = NULL;
int type = $1 >> 16;
int config = $1 & 255;

- ABORT_ON(parse_events_add_numeric(list_event, idx, type, config, NULL));
+ ABORT_ON(parse_events_add_numeric(&list, idx, type, config, NULL));
+ $$ = list;
}

event_legacy_cache:
PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT
{
- ABORT_ON(parse_events_add_cache(list_event, idx, $1, $3, $5));
+ struct list_head *list = NULL;
+
+ ABORT_ON(parse_events_add_cache(&list, idx, $1, $3, $5));
+ $$ = list;
}
|
PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT
{
- ABORT_ON(parse_events_add_cache(list_event, idx, $1, $3, NULL));
+ struct list_head *list = NULL;
+
+ ABORT_ON(parse_events_add_cache(&list, idx, $1, $3, NULL));
+ $$ = list;
}
|
PE_NAME_CACHE_TYPE
{
- ABORT_ON(parse_events_add_cache(list_event, idx, $1, NULL, NULL));
+ struct list_head *list = NULL;
+
+ ABORT_ON(parse_events_add_cache(&list, idx, $1, NULL, NULL));
+ $$ = list;
}

event_legacy_mem:
PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
{
- ABORT_ON(parse_events_add_breakpoint(list_event, idx, (void *) $2, $4));
+ struct list_head *list = NULL;
+
+ ABORT_ON(parse_events_add_breakpoint(&list, idx, (void *) $2, $4));
+ $$ = list;
}
|
PE_PREFIX_MEM PE_VALUE sep_dc
{
- ABORT_ON(parse_events_add_breakpoint(list_event, idx, (void *) $2, NULL));
+ struct list_head *list = NULL;
+
+ ABORT_ON(parse_events_add_breakpoint(&list, idx, (void *) $2, NULL));
+ $$ = list;
}

event_legacy_tracepoint:
PE_NAME ':' PE_NAME
{
- ABORT_ON(parse_events_add_tracepoint(list_event, idx, $1, $3));
+ struct list_head *list = NULL;
+
+ ABORT_ON(parse_events_add_tracepoint(&list, idx, $1, $3));
+ $$ = list;
}

event_legacy_numeric:
PE_VALUE ':' PE_VALUE
{
- ABORT_ON(parse_events_add_numeric(list_event, idx, $1, $3, NULL));
+ struct list_head *list = NULL;
+
+ ABORT_ON(parse_events_add_numeric(&list, idx, $1, $3, NULL));
+ $$ = list;
}

event_legacy_raw:
PE_RAW
{
- ABORT_ON(parse_events_add_numeric(list_event, idx, PERF_TYPE_RAW, $1, NULL));
+ struct list_head *list = NULL;
+
+ ABORT_ON(parse_events_add_numeric(&list, idx, PERF_TYPE_RAW, $1, NULL));
+ $$ = list;
}

event_config:
@@ -222,7 +260,6 @@ sep_slash_dc: '/' | ':' |
%%

void parse_events_error(struct list_head *list_all __used,
- struct list_head *list_event __used,
int *idx __used,
char const *msg __used)
{
--
1.7.7.6


\
 
 \ /
  Last update: 2012-04-15 15:43    [from the cache]
©2003-2011 Jasper Spaans