From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760138AbcBYIwc (ORCPT ); Thu, 25 Feb 2016 03:52:32 -0500 Received: from szxga03-in.huawei.com ([119.145.14.66]:38782 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759918AbcBYIwa (ORCPT ); Thu, 25 Feb 2016 03:52:30 -0500 From: Wang Nan To: , CC: , Wang Nan , "Arnaldo Carvalho de Melo" , Li Zefan , Subject: [RFC PATCH 4/5] perf trace: Call bpf__apply_obj_config in 'perf trace' Date: Thu, 25 Feb 2016 08:51:54 +0000 Message-ID: <1456390315-127562-5-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.3.4 In-Reply-To: <1456390315-127562-1-git-send-email-wangnan0@huawei.com> References: <1456390315-127562-1-git-send-email-wangnan0@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.107.193.248] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020204.56CEC0BD.00A6,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: aab33672cdb47ec18103ca722bb90589 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Li Zefan Cc: pi3orama@163.com --- tools/perf/builtin-trace.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 2deb3f0..b7129d6 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 #include @@ -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 -- 1.8.3.4