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Groups > linux.kernel > #1275524
| From | tip-bot for Wang Nan <tipbot@zytor.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [tip:perf/core] perf bpf: Allow attaching BPF programs to modules symbols |
| Date | 2015-11-23 17:10 +0100 |
| Message-ID | <qy1QL-48K-51@gated-at.bofh.it> (permalink) |
| References | <qvron-7n2-33@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Commit-ID: 5dbd16c0c9d17ab1ab2226a5926482c26c0287ed
Gitweb: http://git.kernel.org/tip/5dbd16c0c9d17ab1ab2226a5926482c26c0287ed
Author: Wang Nan <wangnan0@huawei.com>
AuthorDate: Mon, 16 Nov 2015 12:10:06 +0000
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 18 Nov 2015 17:51:03 -0300
perf bpf: Allow attaching BPF programs to modules symbols
By extending the syntax of BPF object section names, this patch allows
users to attach BPF programs to symbols in modules. For example:
SEC("module=i915;"
"parse_cmds=i915_parse_cmds")
int parse_cmds(void *ctx)
{
return 1;
}
The implementation is very simple: like what 'perf probe' does, for module,
fill 'uprobe' field in 'struct perf_probe_event'. Other parts will be done
automatically.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
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: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1447675815-166222-5-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/bpf-loader.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c
index 84169d6..d0f02ed 100644
--- a/tools/perf/util/bpf-loader.c
+++ b/tools/perf/util/bpf-loader.c
@@ -119,6 +119,16 @@ config__exec(const char *value, struct perf_probe_event *pev)
return 0;
}
+static int
+config__module(const char *value, struct perf_probe_event *pev)
+{
+ pev->uprobes = false;
+ pev->target = strdup(value);
+ if (!pev->target)
+ return -ENOMEM;
+ return 0;
+}
+
static struct {
const char *key;
const char *usage;
@@ -131,6 +141,12 @@ static struct {
.desc = "Set uprobe target",
.func = config__exec,
},
+ {
+ .key = "module",
+ .usage = "module=<module name> ",
+ .desc = "Set kprobe module",
+ .func = config__module,
+ }
};
static int
--
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[PATCH 00/13] perf tools: bpf: Improve BPF program ability Wang Nan <wangnan0@huawei.com> - 2015-11-16 13:50 +0100
[PATCH 03/13] perf tools: Allow BPF program attach to uprobe events Wang Nan <wangnan0@huawei.com> - 2015-11-16 13:50 +0100
Re: [PATCH 03/13] perf tools: Allow BPF program attach to uprobe events Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-16 15:20 +0100
[tip:perf/core] perf bpf: Allow BPF program attach to uprobe events tip-bot for Wang Nan <tipbot@zytor.com> - 2015-11-23 17:10 +0100
[PATCH 10/13] perf tools: Add prologue for BPF programs for fetching arguments Wang Nan <wangnan0@huawei.com> - 2015-11-16 13:50 +0100
[tip:perf/core] perf bpf: Add prologue for BPF programs for fetching arguments tip-bot for He Kuang <tipbot@zytor.com> - 2015-11-23 17:10 +0100
[PATCH 04/13] perf tools: Allow BPF program attach to modules Wang Nan <wangnan0@huawei.com> - 2015-11-16 13:50 +0100
[tip:perf/core] perf bpf: Allow attaching BPF programs to modules symbols tip-bot for Wang Nan <tipbot@zytor.com> - 2015-11-23 17:10 +0100
[PATCH 07/13] bpf tools: Load a program with different instances using preprocessor Wang Nan <wangnan0@huawei.com> - 2015-11-16 13:50 +0100
Re: [PATCH 07/13] bpf tools: Load a program with different instances using preprocessor Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-16 20:10 +0100
Re: [PATCH 07/13] bpf tools: Load a program with different instances using preprocessor "Wangnan (F)" <wangnan0@huawei.com> - 2015-11-17 05:00 +0100
[tip:perf/core] bpf tools: Load a program with different instances using preprocessor tip-bot for Wang Nan <tipbot@zytor.com> - 2015-11-23 17:10 +0100
[PATCH 13/13] perf tools: Use same BPF program if arguments are identical Wang Nan <wangnan0@huawei.com> - 2015-11-16 14:00 +0100
Re: [PATCH 13/13] perf tools: Use same BPF program if arguments are identical "Wangnan (F)" <wangnan0@huawei.com> - 2015-11-17 04:10 +0100
Re: [PATCH 13/13] perf tools: Use same BPF program if arguments are identical Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 14:20 +0100
[PATCH 12/13] perf test: Test BPF prologue Wang Nan <wangnan0@huawei.com> - 2015-11-16 14:00 +0100
Re: [PATCH 12/13] perf test: Test BPF prologue Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 02:30 +0100
Re: [PATCH 12/13] perf test: Test BPF prologue "Wangnan (F)" <wangnan0@huawei.com> - 2015-11-17 02:40 +0100
Re: [PATCH 12/13] perf test: Test BPF prologue "Wangnan (F)" <wangnan0@huawei.com> - 2015-11-17 05:40 +0100
Re: [PATCH 12/13] perf test: Test BPF prologue Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 13:30 +0100
[PATCH 0/5] perf tools: Improve BPF support Wang Nan <wangnan0@huawei.com> - 2015-11-17 09:40 +0100
[PATCH 5/5] perf test: Mute test cases if verbose == 0 Wang Nan <wangnan0@huawei.com> - 2015-11-17 09:40 +0100
Re: [PATCH 5/5] perf test: Mute test cases if verbose == 0 Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 14:20 +0100
[tip:perf/core] perf test: Mute test cases error messages if verbose == 0 tip-bot for Wang Nan <tipbot@zytor.com> - 2015-11-23 17:20 +0100
[PATCH 2/5] perf tools: Use same BPF program if arguments are identical Wang Nan <wangnan0@huawei.com> - 2015-11-17 09:40 +0100
[tip:perf/core] perf bpf: Use same BPF program if arguments are identical tip-bot for Wang Nan <tipbot@zytor.com> - 2015-11-23 17:10 +0100
[PATCH 4/5] perf test: Print result for each subtest for BPF Wang Nan <wangnan0@huawei.com> - 2015-11-17 09:40 +0100
[tip:perf/core] perf test: Print result for each BPF subtest tip-bot for Wang Nan <tipbot@zytor.com> - 2015-11-23 17:20 +0100
[PATCH 1/5] perf test: Fix 2 bugs in 'perf test BPF' Wang Nan <wangnan0@huawei.com> - 2015-11-17 09:40 +0100
Re: [PATCH 1/5] perf test: Fix 2 bugs in 'perf test BPF' Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 14:00 +0100
Re: [PATCH 1/5] perf test: Fix 2 bugs in 'perf test BPF' pi3orama <pi3orama@163.com> - 2015-11-17 14:10 +0100
Re: [PATCH 1/5] perf test: Fix 2 bugs in 'perf test BPF' Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 14:40 +0100
[tip:perf/core] perf test: Fix 'perf test BPF' when it fails to find a suitable vmlinux tip-bot for Wang Nan <tipbot@zytor.com> - 2015-11-23 17:10 +0100
[PATCH 3/5] perf test: Print result for each subtest for llvm Wang Nan <wangnan0@huawei.com> - 2015-11-17 09:40 +0100
Re: [PATCH 3/5] perf test: Print result for each subtest for llvm Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 14:10 +0100
[tip:perf/core] perf test: Print result for each LLVM subtest tip-bot for Wang Nan <tipbot@zytor.com> - 2015-11-23 17:20 +0100
Re: [PATCH 12/13] perf test: Test BPF prologue "Wangnan (F)" <wangnan0@huawei.com> - 2015-11-17 09:50 +0100
[PATCH] perf record: Support custom vmlinux path Wang Nan <wangnan0@huawei.com> - 2015-11-17 11:00 +0100
Re: [PATCH] perf record: Support custom vmlinux path Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 13:40 +0100
Re: [PATCH] perf record: Support custom vmlinux path Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-17 13:50 +0100
Re: [PATCH] perf record: Support custom vmlinux path pi3orama <pi3orama@163.com> - 2015-11-17 13:50 +0100
[PATCH 0/2] perf tools: Builtin options related improvements Wang Nan <wangnan0@huawei.com> - 2015-11-19 15:10 +0100
[PATCH 2/2] perf record: Support custom vmlinux path Wang Nan <wangnan0@huawei.com> - 2015-11-19 15:10 +0100
[PATCH 1/2] perf tools: Always give options even it not compiled Wang Nan <wangnan0@huawei.com> - 2015-11-19 15:10 +0100
RE: [PATCH 1/2] perf tools: Always give options even it not compiled 平松雅巳 / HIRAMATU，MASAMI <masami.hiramatsu.pt@hitachi.com> - 2015-11-20 12:00 +0100
Re: [PATCH 1/2] perf tools: Always give options even it not compiled "Wangnan (F)" <wangnan0@huawei.com> - 2015-11-26 09:10 +0100
Re: [PATCH 1/2] perf tools: Always give options even it not compiled "Wangnan (F)" <wangnan0@huawei.com> - 2015-11-26 10:10 +0100
[tip:perf/core] perf test: Test the BPF prologue adding infrastructure tip-bot for Wang Nan <tipbot@zytor.com> - 2015-11-23 17:10 +0100
[PATCH 06/13] perf tools: Allow BPF program config probing options Wang Nan <wangnan0@huawei.com> - 2015-11-16 14:00 +0100
[tip:perf/core] perf bpf: Allow BPF program config probing options tip-bot for Wang Nan <tipbot@zytor.com> - 2015-11-23 17:10 +0100
[PATCH 08/13] perf tools: Add BPF_PROLOGUE config options for further patches Wang Nan <wangnan0@huawei.com> - 2015-11-16 14:00 +0100
[tip:perf/core] perf bpf: Add BPF_PROLOGUE config options for further patches tip-bot for Wang Nan <tipbot@zytor.com> - 2015-11-23 17:10 +0100
[PATCH 11/13] perf tools: Generate prologue for BPF programs Wang Nan <wangnan0@huawei.com> - 2015-11-16 14:00 +0100
[tip:perf/core] perf bpf: Generate prologue for BPF programs tip-bot for Wang Nan <tipbot@zytor.com> - 2015-11-23 17:10 +0100
[PATCH 02/13] perf probe: Clear probe_trace_event when add_probe_trace_event() fails Wang Nan <wangnan0@huawei.com> - 2015-11-16 14:00 +0100
Re: [PATCH 00/13] perf tools: bpf: Improve BPF program ability Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-16 15:20 +0100
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