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-rw-r--r--tools/perf/util/Build1
-rw-r--r--tools/perf/util/parse-events.c57
-rw-r--r--tools/perf/util/parse-events.h8
-rw-r--r--tools/perf/util/parse-events.l3
-rw-r--r--tools/perf/util/parse-events.y18
5 files changed, 86 insertions, 1 deletions
diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 9217119c4108..591b3fe3ed49 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -87,6 +87,7 @@ libperf-$(CONFIG_AUXTRACE) += intel-bts.o
libperf-y += parse-branch-options.o
libperf-y += parse-regs-options.o
+libperf-$(CONFIG_LIBBPF) += bpf-loader.o
libperf-$(CONFIG_LIBELF) += symbol-elf.o
libperf-$(CONFIG_LIBELF) += probe-file.o
libperf-$(CONFIG_LIBELF) += probe-event.o
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 72abcf254ccb..a9e1d79d17d7 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -11,6 +11,7 @@
#include "symbol.h"
#include "cache.h"
#include "header.h"
+#include "bpf-loader.h"
#include "debug.h"
#include <api/fs/tracing_path.h>
#include "parse-events-bison.h"
@@ -529,6 +530,62 @@ static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
return ret;
}
+int parse_events_load_bpf_obj(struct parse_events_evlist *data,
+ struct list_head *list,
+ struct bpf_object *obj)
+{
+ int err;
+ char errbuf[BUFSIZ];
+
+ if (IS_ERR(obj) || !obj) {
+ snprintf(errbuf, sizeof(errbuf),
+ "Internal error: load bpf obj with NULL");
+ err = -EINVAL;
+ goto errout;
+ }
+
+ /*
+ * Temporary add a dummy event here so we can check whether
+ * basic bpf loader works. Following patches will replace
+ * dummy event by useful evsels.
+ */
+ return parse_events_add_numeric(data, list, PERF_TYPE_SOFTWARE,
+ PERF_COUNT_SW_DUMMY, NULL);
+errout:
+ data->error->help = strdup("(add -v to see detail)");
+ data->error->str = strdup(errbuf);
+ return err;
+}
+
+int parse_events_load_bpf(struct parse_events_evlist *data,
+ struct list_head *list,
+ char *bpf_file_name)
+{
+ struct bpf_object *obj;
+
+ obj = bpf__prepare_load(bpf_file_name);
+ if (IS_ERR(obj) || !obj) {
+ char errbuf[BUFSIZ];
+ int err;
+
+ err = obj ? PTR_ERR(obj) : -EINVAL;
+
+ if (err == -ENOTSUP)
+ snprintf(errbuf, sizeof(errbuf),
+ "BPF support is not compiled");
+ else
+ snprintf(errbuf, sizeof(errbuf),
+ "BPF object file '%s' is invalid",
+ bpf_file_name);
+
+ data->error->help = strdup("(add -v to see detail)");
+ data->error->str = strdup(errbuf);
+ return err;
+ }
+
+ return parse_events_load_bpf_obj(data, list, obj);
+}
+
static int
parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
{
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 13c9063513eb..765018a17448 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -123,6 +123,14 @@ int parse_events_add_tracepoint(struct list_head *list, int *idx,
char *sys, char *event,
struct parse_events_error *error,
struct list_head *head_config);
+int parse_events_load_bpf(struct parse_events_evlist *data,
+ struct list_head *list,
+ char *bpf_file_name);
+/* Provide this function for perf test */
+struct bpf_object;
+int parse_events_load_bpf_obj(struct parse_events_evlist *data,
+ struct list_head *list,
+ struct bpf_object *obj);
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.l b/tools/perf/util/parse-events.l
index 8d0de5b2991d..cf330ebf812c 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -115,6 +115,7 @@ do { \
group [^,{}/]*[{][^}]*[}][^,{}/]*
event_pmu [^,{}/]+[/][^/]*[/][^,{}/]*
event [^,{}/]+
+bpf_object .*\.(o|bpf)
num_dec [0-9]+
num_hex 0x[a-fA-F0-9]+
@@ -159,6 +160,7 @@ modifier_bp [rwx]{1,3}
}
{event_pmu} |
+{bpf_object} |
{event} {
BEGIN(INITIAL);
REWIND(1);
@@ -266,6 +268,7 @@ r{num_raw_hex} { return raw(yyscanner); }
{num_hex} { return value(yyscanner, 16); }
{modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); }
+{bpf_object} { return str(yyscanner, PE_BPF_OBJECT); }
{name} { return pmu_str_check(yyscanner); }
"/" { BEGIN(config); return '/'; }
- { return '-'; }
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index ae6af269f9c9..497f19b20f0b 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -42,6 +42,7 @@ static inc_group_count(struct list_head *list,
%token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_RAW PE_TERM
%token PE_EVENT_NAME
%token PE_NAME
+%token PE_BPF_OBJECT
%token PE_MODIFIER_EVENT PE_MODIFIER_BP
%token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT
%token PE_PREFIX_MEM PE_PREFIX_RAW PE_PREFIX_GROUP
@@ -53,6 +54,7 @@ static inc_group_count(struct list_head *list,
%type <num> PE_RAW
%type <num> PE_TERM
%type <str> PE_NAME
+%type <str> PE_BPF_OBJECT
%type <str> PE_NAME_CACHE_TYPE
%type <str> PE_NAME_CACHE_OP_RESULT
%type <str> PE_MODIFIER_EVENT
@@ -70,6 +72,7 @@ static inc_group_count(struct list_head *list,
%type <tracepoint_name> tracepoint_name
%type <head> event_legacy_numeric
%type <head> event_legacy_raw
+%type <head> event_bpf_file
%type <head> event_def
%type <head> event_mod
%type <head> event_name
@@ -203,7 +206,8 @@ event_def: event_pmu |
event_legacy_mem |
event_legacy_tracepoint sep_dc |
event_legacy_numeric sep_dc |
- event_legacy_raw sep_dc
+ event_legacy_raw sep_dc |
+ event_bpf_file
event_pmu:
PE_NAME '/' event_config '/'
@@ -449,6 +453,18 @@ PE_RAW
$$ = list;
}
+event_bpf_file:
+PE_BPF_OBJECT
+{
+ struct parse_events_evlist *data = _data;
+ struct parse_events_error *error = data->error;
+ struct list_head *list;
+
+ ALLOC_LIST(list);
+ ABORT_ON(parse_events_load_bpf(data, list, $1));
+ $$ = list;
+}
+
start_terms: event_config
{
struct parse_events_terms *data = _data;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.