[PATCH v2 09/13] perf parse-events: Separate ENOMEM memory handling

From: Ian Rogers
Date: Tue Jun 27 2023 - 14:11:56 EST

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Add PE_ABORT that will YYNOMEM or YYABORT accordingly.

Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
tools/perf/util/parse-events.y | 134 ++++++++++++++++++++-------------
1 file changed, 82 insertions(+), 52 deletions(-)

diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index eaf43bd8fe3f..f090a85c4518 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -28,6 +28,13 @@ do { \
YYABORT; \
} while (0)

+#define PE_ABORT(val) \
+do { \
+ if (val == -ENOMEM) \
+ YYNOMEM; \
+ YYABORT; \
+} while (0)
+
static struct list_head* alloc_list(void)
{
struct list_head *list;
@@ -371,7 +378,7 @@ PE_NAME sep_dc
err = parse_events_multi_pmu_add(_parse_state, $1, NULL, &list);
free($1);
if (err < 0)
- YYABORT;
+ PE_ABORT(err);
$$ = list;
}

@@ -396,7 +403,7 @@ value_sym '/' event_config '/'
parse_events_terms__delete($3);
if (err) {
free_list_evsel(list);
- YYABORT;
+ PE_ABORT(err);
}
$$ = list;
}
@@ -407,23 +414,28 @@ value_sym sep_slash_slash_dc
int type = $1 >> 16;
int config = $1 & 255;
bool wildcard = (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE);
+ int err;

list = alloc_list();
if (!list)
YYNOMEM;
- ABORT_ON(parse_events_add_numeric(_parse_state, list, type, config,
- /*head_config=*/NULL, wildcard));
+ err = parse_events_add_numeric(_parse_state, list, type, config, /*head_config=*/NULL, wildcard);
+ if (err)
+ PE_ABORT(err);
$$ = list;
}
|
PE_VALUE_SYM_TOOL sep_slash_slash_dc
{
struct list_head *list;
+ int err;

list = alloc_list();
if (!list)
YYNOMEM;
- ABORT_ON(parse_events_add_tool(_parse_state, list, $1));
+ err = parse_events_add_tool(_parse_state, list, $1);
+ if (err)
+ YYNOMEM;
$$ = list;
}

@@ -444,7 +456,7 @@ PE_LEGACY_CACHE opt_event_config
free($1);
if (err) {
free_list_evsel(list);
- YYABORT;
+ PE_ABORT(err);
}
$$ = list;
}
@@ -465,7 +477,7 @@ PE_PREFIX_MEM PE_VALUE PE_BP_SLASH PE_VALUE PE_BP_COLON PE_MODIFIER_BP opt_event
free($6);
if (err) {
free(list);
- YYABORT;
+ PE_ABORT(err);
}
$$ = list;
}
@@ -484,7 +496,7 @@ PE_PREFIX_MEM PE_VALUE PE_BP_SLASH PE_VALUE opt_event_config
parse_events_terms__delete($5);
if (err) {
free(list);
- YYABORT;
+ PE_ABORT(err);
}
$$ = list;
}
@@ -504,7 +516,7 @@ PE_PREFIX_MEM PE_VALUE PE_BP_COLON PE_MODIFIER_BP opt_event_config
free($4);
if (err) {
free(list);
- YYABORT;
+ PE_ABORT(err);
}
$$ = list;
}
@@ -522,7 +534,7 @@ PE_PREFIX_MEM PE_VALUE opt_event_config
parse_events_terms__delete($3);
if (err) {
free(list);
- YYABORT;
+ PE_ABORT(err);
}
$$ = list;
}
@@ -549,7 +561,7 @@ tracepoint_name opt_event_config
free($1.event);
if (err) {
free(list);
- YYABORT;
+ PE_ABORT(err);
}
$$ = list;
}
@@ -576,7 +588,7 @@ PE_VALUE ':' PE_VALUE opt_event_config
parse_events_terms__delete($4);
if (err) {
free(list);
- YYABORT;
+ PE_ABORT(err);
}
$$ = list;
}
@@ -600,7 +612,7 @@ PE_RAW opt_event_config
parse_events_terms__delete($2);
if (err) {
free(list);
- YYABORT;
+ PE_ABORT(err);
}
$$ = list;
}
@@ -620,7 +632,7 @@ PE_BPF_OBJECT opt_event_config
free($1);
if (err) {
free(list);
- YYABORT;
+ PE_ABORT(err);
}
$$ = list;
}
@@ -637,7 +649,7 @@ PE_BPF_SOURCE opt_event_config
parse_events_terms__delete($2);
if (err) {
free(list);
- YYABORT;
+ PE_ABORT(err);
}
$$ = list;
}
@@ -712,11 +724,12 @@ event_term:
PE_RAW
{
struct parse_events_term *term;
+ int err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_RAW,
+ strdup("raw"), $1, &@1, &@1);

- if (parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_RAW,
- strdup("raw"), $1, &@1, &@1)) {
+ if (err) {
free($1);
- YYABORT;
+ PE_ABORT(err);
}
$$ = term;
}
@@ -724,12 +737,12 @@ PE_RAW
name_or_raw '=' name_or_legacy
{
struct parse_events_term *term;
+ int err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER, $1, $3, &@1, &@3);

- if (parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
- $1, $3, &@1, &@3)) {
+ if (err) {
free($1);
free($3);
- YYABORT;
+ PE_ABORT(err);
}
$$ = term;
}
@@ -737,11 +750,12 @@ name_or_raw '=' name_or_legacy
name_or_raw '=' PE_VALUE
{
struct parse_events_term *term;
+ int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
+ $1, $3, false, &@1, &@3);

- if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
- $1, $3, false, &@1, &@3)) {
+ if (err) {
free($1);
- YYABORT;
+ PE_ABORT(err);
}
$$ = term;
}
@@ -749,12 +763,13 @@ name_or_raw '=' PE_VALUE
name_or_raw '=' PE_TERM_HW
{
struct parse_events_term *term;
+ int err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
+ $1, $3.str, &@1, &@3);

- if (parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
- $1, $3.str, &@1, &@3)) {
+ if (err) {
free($1);
free($3.str);
- YYABORT;
+ PE_ABORT(err);
}
$$ = term;
}
@@ -762,11 +777,12 @@ name_or_raw '=' PE_TERM_HW
PE_LEGACY_CACHE
{
struct parse_events_term *term;
+ int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE,
+ $1, 1, true, &@1, NULL);

- if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE,
- $1, 1, true, &@1, NULL)) {
+ if (err) {
free($1);
- YYABORT;
+ PE_ABORT(err);
}
$$ = term;
}
@@ -774,11 +790,12 @@ PE_LEGACY_CACHE
PE_NAME
{
struct parse_events_term *term;
+ int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
+ $1, 1, true, &@1, NULL);

- if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
- $1, 1, true, &@1, NULL)) {
+ if (err) {
free($1);
- YYABORT;
+ PE_ABORT(err);
}
$$ = term;
}
@@ -786,11 +803,12 @@ PE_NAME
PE_TERM_HW
{
struct parse_events_term *term;
+ int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_HARDWARE,
+ $1.str, $1.num & 255, false, &@1, NULL);

- if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_HARDWARE,
- $1.str, $1.num & 255, false, &@1, NULL)) {
+ if (err) {
free($1.str);
- YYABORT;
+ PE_ABORT(err);
}
$$ = term;
}
@@ -798,10 +816,11 @@ PE_TERM_HW
PE_TERM '=' name_or_legacy
{
struct parse_events_term *term;
+ int err = parse_events_term__str(&term, (int)$1, NULL, $3, &@1, &@3);

- if (parse_events_term__str(&term, (int)$1, NULL, $3, &@1, &@3)) {
+ if (err) {
free($3);
- YYABORT;
+ PE_ABORT(err);
}
$$ = term;
}
@@ -809,10 +828,11 @@ PE_TERM '=' name_or_legacy
PE_TERM '=' PE_TERM_HW
{
struct parse_events_term *term;
+ int err = parse_events_term__str(&term, (int)$1, NULL, $3.str, &@1, &@3);

- if (parse_events_term__str(&term, (int)$1, NULL, $3.str, &@1, &@3)) {
+ if (err) {
free($3.str);
- YYABORT;
+ PE_ABORT(err);
}
$$ = term;
}
@@ -820,37 +840,46 @@ PE_TERM '=' PE_TERM_HW
PE_TERM '=' PE_TERM
{
struct parse_events_term *term;
+ int err = parse_events_term__term(&term, (int)$1, (int)$3, &@1, &@3);
+
+ if (err)
+ PE_ABORT(err);

- ABORT_ON(parse_events_term__term(&term, (int)$1, (int)$3, &@1, &@3));
$$ = term;
}
|
PE_TERM '=' PE_VALUE
{
struct parse_events_term *term;
+ int err = parse_events_term__num(&term, (int)$1, NULL, $3, false, &@1, &@3);
+
+ if (err)
+ PE_ABORT(err);

- ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, $3, false, &@1, &@3));
$$ = term;
}
|
PE_TERM
{
struct parse_events_term *term;
+ int err = parse_events_term__num(&term, (int)$1, NULL, 1, true, &@1, NULL);
+
+ if (err)
+ PE_ABORT(err);

- ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, 1, true, &@1, NULL));
$$ = term;
}
|
name_or_raw array '=' name_or_legacy
{
struct parse_events_term *term;
+ int err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER, $1, $4, &@1, &@4);

- if (parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
- $1, $4, &@1, &@4)) {
+ if (err) {
free($1);
free($4);
free($2.ranges);
- YYABORT;
+ PE_ABORT(err);
}
term->array = $2;
$$ = term;
@@ -859,12 +888,12 @@ name_or_raw array '=' name_or_legacy
name_or_raw array '=' PE_VALUE
{
struct parse_events_term *term;
+ int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER, $1, $4, false, &@1, &@4);

- if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
- $1, $4, false, &@1, &@4)) {
+ if (err) {
free($1);
free($2.ranges);
- YYABORT;
+ PE_ABORT(err);
}
term->array = $2;
$$ = term;
@@ -874,14 +903,15 @@ PE_DRV_CFG_TERM
{
struct parse_events_term *term;
char *config = strdup($1);
+ int err;

if (!config)
YYNOMEM;
- if (parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_DRV_CFG,
- config, $1, &@1, NULL)) {
+ err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_DRV_CFG, config, $1, &@1, NULL);
+ if (err) {
free($1);
free(config);
- YYABORT;
+ PE_ABORT(err);
}
$$ = term;
}
--
2.41.0.162.gfafddb0af9-goog

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