diff mbox

[06/46] perf trace: Call bpf__apply_obj_config in 'perf trace'

Message ID 1456479154-136027-7-git-send-email-wangnan0@huawei.com
State New
Headers show

Commit Message

Wang Nan Feb. 26, 2016, 9:31 a.m. UTC 
Without this patch BPF map configuration is not applied.

Command like this:
 # ./perf trace --ev bpf-output/no-inherit,name=evt/ \
                --ev ./test_bpf_trace.c/map:channel.event=evt/ \
                usleep 100000

Load BPF files without error, but since map:channel.event=evt is not
applied, bpf-output event not work.

This patch allows 'perf trace' load and run BPF scripts.

Signed-off-by: Wang Nan <wangnan0@huawei.com>

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: pi3orama@163.com
---
 tools/perf/builtin-trace.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

-- 
1.8.3.4
diff mbox

Patch

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 9b6e7c4..32392c4 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -33,6 +33,7 @@ 
 #include "util/stat.h"
 #include "trace-event.h"
 #include "util/parse-events.h"
+#include "util/bpf-loader.h"
 
 #include <libaudit.h>
 #include <stdlib.h>
@@ -2597,6 +2598,16 @@  static int trace__run(struct trace *trace, int argc, const char **argv)
 	if (err < 0)
 		goto out_error_open;
 
+	err = bpf__apply_obj_config();
+	if (err) {
+		char errbuf[BUFSIZ];
+
+		bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf));
+		pr_err("ERROR: Apply config to BPF failed: %s\n",
+			 errbuf);
+		goto out_error_open;
+	}
+
 	/*
 	 * Better not use !target__has_task() here because we need to cover the
 	 * case where no threads were specified in the command line, but a