From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org, Wang Nan <wangnan0@huawei.com>,
Alexei Starovoitov <ast@kernel.org>, Jiri Olsa <jolsa@kernel.org>,
Li Zefan <lizefan@huawei.com>,
Peter Zijlstra <peterz@infradead.org>,
pi3orama@163.com, Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 18/19] perf trace: Call bpf__apply_obj_config in 'perf trace'
Date: Fri, 26 Feb 2016 20:18:30 -0300 [thread overview]
Message-ID: <1456528711-13793-19-git-send-email-acme@kernel.org> (raw)
In-Reply-To: <1456528711-13793-1-git-send-email-acme@kernel.org>
From: Wang Nan <wangnan0@huawei.com>
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>
---
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 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
--
2.5.0
next prev parent reply other threads:[~2016-02-26 23:19 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-26 23:18 [GIT PULL 00/19] perf/core improvements and fixes Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 01/19] perf tools: Use asprintf() for simple string formatting/allocation Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 02/19] perf jvmti: improve error message in Makefile Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 03/19] perf tools: Fix parsing of pmu events with empty list of modifiers Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 04/19] perf script: Exception handling when the print fmt is empty Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 05/19] perf script: Remove duplicated code and needless script_spec__findnew() Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 06/19] perf hists: Add more helper functions for the hierarchy mode Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 07/19] perf report: Show message for percent limit on stdio Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 08/19] perf hists browser: Cleanup hist_browser__update_percent_limit() Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 09/19] perf hists browser: Show message for percent limit Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 10/19] perf report: Show message for percent limit on gtk Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 11/19] perf hists: Fix comparing of dynamic entries Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 12/19] perf report: Fix indentation of dynamic entries in hierarchy Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 13/19] perf report: Left align " Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 14/19] perf hists: Fix dynamic entry display " Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 15/19] perf report: Update column width of dynamic entries Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 16/19] perf config: Bring perf_default_config to the very beginning at main() Arnaldo Carvalho de Melo
2016-02-26 23:18 ` [PATCH 17/19] perf tools: Only set filter for tracepoints events Arnaldo Carvalho de Melo
2016-02-26 23:18 ` Arnaldo Carvalho de Melo [this message]
2016-02-26 23:18 ` [PATCH 19/19] perf trace: Print content of bpf-output event Arnaldo Carvalho de Melo
2016-02-27 9:36 ` [GIT PULL 00/19] perf/core improvements and fixes Ingo Molnar
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