Messages in this thread Patch in this message | | | From | Wang Nan <> | Subject | [PATCH 30/31] perf record: Apply config to BPF objects before recording | Date | Wed, 14 Oct 2015 12:41:41 +0000 |
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From: He Kuang <hekuang@huawei.com>
In perf record, before start recording, call bpf__apply_config() to turn on all BPF config options.
Signed-off-by: Wang Nan <wangnan0@huawei.com> Signed-off-by: He Kuang <hekuang@huawei.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexei Starovoitov <ast@plumgrid.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kaixu Xia <xiakaixu@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/n/ebpf-ziazd5s4t9j96d01t5bdbtat@git.kernel.org --- tools/perf/builtin-record.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 200f221..a47ce9e 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -32,6 +32,7 @@ #include "util/parse-branch-options.h" #include "util/parse-regs-options.h" #include "util/llvm-utils.h" +#include "util/bpf-loader.h" #include <unistd.h> #include <sched.h> @@ -524,6 +525,15 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) goto out_child; } + err = bpf__apply_config(); + if (err) { + char errbuf[BUFSIZ]; + + bpf__strerror_apply_config(err, errbuf, sizeof(errbuf)); + pr_warning("WARNING: Apply config to BPF failed: %s\n", + errbuf); + } + /* * Normally perf_session__new would do this, but it doesn't have the * evlist. -- 1.8.3.4
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