summaryrefslogtreecommitdiff
path: root/tools/perf/builtin-trace.c
diff options
context:
space:
mode:
authorWang Nan <wangnan0@huawei.com>2016-02-26 09:31:54 +0000
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-02-26 19:50:40 -0300
commitba50423530200659d4deb703a8f72d3b69bc13ce (patch)
tree2de54b3feb823113ad9b4acec0ebac41fa7c4071 /tools/perf/builtin-trace.c
parentfdf14720fbd02d406ac2c1c50444774b4c7eed9a (diff)
downloadlinux-ba50423530200659d4deb703a8f72d3b69bc13ce.tar.gz
perf trace: Call bpf__apply_obj_config in 'perf trace'
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: Alexei Starovoitov <ast@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Li Zefan <lizefan@huawei.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1456479154-136027-7-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-trace.c')
-rw-r--r--tools/perf/builtin-trace.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 20916dd77aac..254149ca5e1b 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>
@@ -2586,6 +2587,16 @@ 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