Merge tag 'perf-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:
 "A set of fixes and improvements for the perf subsystem:

  Kernel fixes:

   - Install cgroup events to the correct CPU context to prevent a
     potential list double add

   - Prevent an integer underflow in the perf mlock accounting

   - Add a missing prototype for arch_perf_update_userpage()

  Tooling:

   - Add a missing unlock in the error path of maps__insert() in perf
     maps.

   - Fix the build with the latest libbfd

   - Fix the perf parser so it does not delete parse event terms, which
     caused a regression for using perf with the ARM CoreSight as the
     sink configuration was missing due to the deletion.

   - Fix the double free in the perf CPU map merging test case

   - Add the missing ustring support for the perf probe command"

* tag 'perf-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf maps: Add missing unlock to maps__insert() error case
  perf probe: Add ustring support for perf probe command
  perf: Make perf able to build with latest libbfd
  perf test: Fix test case Merge cpu map
  perf parse: Copy string to perf_evsel_config_term
  perf parse: Refactor 'struct perf_evsel_config_term'
  kernel/events: Add a missing prototype for arch_perf_update_userpage()
  perf/cgroups: Install cgroup events to correct cpuctx
  perf/core: Fix mlock accounting in perf_mmap()

1 files changed, 45 insertions, 22 deletions

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index ed7c008b9c8b..c01ba6f8fdad 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1219,8 +1219,7 @@ static int config_attr(struct perf_event_attr *attr,
 static int get_config_terms(struct list_head *head_config,
 			    struct list_head *head_terms __maybe_unused)
 {
-#define ADD_CONFIG_TERM(__type, __name, __val)			\
-do {								\
+#define ADD_CONFIG_TERM(__type)					\
 	struct perf_evsel_config_term *__t;			\
 								\
 	__t = zalloc(sizeof(*__t));				\
@@ -1229,9 +1228,24 @@ do {								\
 								\
 	INIT_LIST_HEAD(&__t->list);				\
 	__t->type       = PERF_EVSEL__CONFIG_TERM_ ## __type;	\
-	__t->val.__name = __val;				\
 	__t->weak	= term->weak;				\
-	list_add_tail(&__t->list, head_terms);			\
+	list_add_tail(&__t->list, head_terms)
+
+#define ADD_CONFIG_TERM_VAL(__type, __name, __val)		\
+do {								\
+	ADD_CONFIG_TERM(__type);				\
+	__t->val.__name = __val;				\
+} while (0)
+
+#define ADD_CONFIG_TERM_STR(__type, __val)			\
+do {								\
+	ADD_CONFIG_TERM(__type);				\
+	__t->val.str = strdup(__val);				\
+	if (!__t->val.str) {					\
+		zfree(&__t);					\
+		return -ENOMEM;					\
+	}							\
+	__t->free_str = true;					\
 } while (0)
 
 	struct parse_events_term *term;
@@ -1239,53 +1253,62 @@ do {								\
 	list_for_each_entry(term, head_config, list) {
 		switch (term->type_term) {
 		case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
-			ADD_CONFIG_TERM(PERIOD, period, term->val.num);
+			ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
-			ADD_CONFIG_TERM(FREQ, freq, term->val.num);
+			ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_TIME:
-			ADD_CONFIG_TERM(TIME, time, term->val.num);
+			ADD_CONFIG_TERM_VAL(TIME, time, term->val.num);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
-			ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
+			ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
-			ADD_CONFIG_TERM(BRANCH, branch, term->val.str);
+			ADD_CONFIG_TERM_STR(BRANCH, term->val.str);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
-			ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
+			ADD_CONFIG_TERM_VAL(STACK_USER, stack_user,
+					    term->val.num);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_INHERIT:
-			ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
+			ADD_CONFIG_TERM_VAL(INHERIT, inherit,
+					    term->val.num ? 1 : 0);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
-			ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
+			ADD_CONFIG_TERM_VAL(INHERIT, inherit,
+					    term->val.num ? 0 : 1);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
-			ADD_CONFIG_TERM(MAX_STACK, max_stack, term->val.num);
+			ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack,
+					    term->val.num);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
-			ADD_CONFIG_TERM(MAX_EVENTS, max_events, term->val.num);
+			ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events,
+					    term->val.num);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
-			ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
+			ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
+					    term->val.num ? 1 : 0);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
-			ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
+			ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
+					    term->val.num ? 0 : 1);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
-			ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
+			ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_PERCORE:
-			ADD_CONFIG_TERM(PERCORE, percore,
-					term->val.num ? true : false);
+			ADD_CONFIG_TERM_VAL(PERCORE, percore,
+					    term->val.num ? true : false);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
-			ADD_CONFIG_TERM(AUX_OUTPUT, aux_output, term->val.num ? 1 : 0);
+			ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output,
+					    term->val.num ? 1 : 0);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
-			ADD_CONFIG_TERM(AUX_SAMPLE_SIZE, aux_sample_size, term->val.num);
+			ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size,
+					    term->val.num);
 			break;
 		default:
 			break;
@@ -1322,7 +1345,7 @@ static int get_config_chgs(struct perf_pmu *pmu, struct list_head *head_config,
 	}
 
 	if (bits)
-		ADD_CONFIG_TERM(CFG_CHG, cfg_chg, bits);
+		ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits);
 
 #undef ADD_CONFIG_TERM
 	return 0;