From: Ian Rogers <irogers@google.com>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Tom Rix <trix@redhat.com>, Fangrui Song <maskray@google.com>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Andi Kleen <ak@linux.intel.com>, Leo Yan <leo.yan@linaro.org>,
Madhavan Srinivasan <maddy@linux.ibm.com>,
Carsten Haitzler <carsten.haitzler@arm.com>,
Ravi Bangoria <ravi.bangoria@amd.com>,
"Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>,
Athira Rajeev <atrajeev@linux.vnet.ibm.com>,
Kan Liang <kan.liang@linux.intel.com>,
Yang Jihong <yangjihong1@huawei.com>,
James Clark <james.clark@arm.com>,
Tiezhu Yang <yangtiezhu@loongson.cn>,
Eduard Zingerman <eddyz87@gmail.com>,
Andrii Nakryiko <andrii@kernel.org>, Yonghong Song <yhs@fb.com>,
Rob Herring <robh@kernel.org>,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
bpf@vger.kernel.org, llvm@lists.linux.dev,
Wang Nan <wangnan0@huawei.com>,
Wang ShaoBo <bobo.shaobowang@huawei.com>,
YueHaibing <yuehaibing@huawei.com>, He Kuang <hekuang@huawei.com>,
Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Ian Rogers <irogers@google.com>
Subject: [PATCH v1 4/4] perf trace: Tidy comments
Date: Thu, 10 Aug 2023 11:48:53 -0700 [thread overview]
Message-ID: <20230810184853.2860737-5-irogers@google.com> (raw)
In-Reply-To: <20230810184853.2860737-1-irogers@google.com>
Now tools/perf/examples/bpf/augmented_syscalls.c is
tools/perf/util/bpf_skel/augmented_syscalls.bpf.c and not enabled as a
BPF event, tidy the comments to reflect this.
Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/trace/beauty/beauty.h | 15 +++++++--------
.../util/bpf_skel/augmented_raw_syscalls.bpf.c | 8 --------
2 files changed, 7 insertions(+), 16 deletions(-)
diff --git a/tools/perf/trace/beauty/beauty.h b/tools/perf/trace/beauty/beauty.h
index 3d12bf0f6d07..788e8f6bd90e 100644
--- a/tools/perf/trace/beauty/beauty.h
+++ b/tools/perf/trace/beauty/beauty.h
@@ -67,15 +67,14 @@ extern struct strarray strarray__socket_level;
/**
* augmented_arg: extra payload for syscall pointer arguments
- * If perf_sample->raw_size is more than what a syscall sys_enter_FOO puts,
- * then its the arguments contents, so that we can show more than just a
+ * If perf_sample->raw_size is more than what a syscall sys_enter_FOO puts, then
+ * its the arguments contents, so that we can show more than just a
* pointer. This will be done initially with eBPF, the start of that is at the
- * tools/perf/examples/bpf/augmented_syscalls.c example for the openat, but
- * will eventually be done automagically caching the running kernel tracefs
- * events data into an eBPF C script, that then gets compiled and its .o file
- * cached for subsequent use. For char pointers like the ones for 'open' like
- * syscalls its easy, for the rest we should use DWARF or better, BTF, much
- * more compact.
+ * tools/perf/util/bpf_skel/augmented_syscalls.bpf.c that will eventually be
+ * done automagically caching the running kernel tracefs events data into an
+ * eBPF C script, that then gets compiled and its .o file cached for subsequent
+ * use. For char pointers like the ones for 'open' like syscalls its easy, for
+ * the rest we should use DWARF or better, BTF, much more compact.
*
* @size: 8 if all we need is an integer, otherwise all of the augmented arg.
* @int_arg: will be used for integer like pointer contents, like 'accept's 'upeer_addrlen'
diff --git a/tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c b/tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c
index 70478b9460ee..0586c4118656 100644
--- a/tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c
+++ b/tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c
@@ -2,16 +2,8 @@
/*
* Augment the raw_syscalls tracepoints with the contents of the pointer arguments.
*
- * Test it with:
- *
- * perf trace -e tools/perf/examples/bpf/augmented_raw_syscalls.c cat /etc/passwd > /dev/null
- *
* This exactly matches what is marshalled into the raw_syscall:sys_enter
* payload expected by the 'perf trace' beautifiers.
- *
- * For now it just uses the existing tracepoint augmentation code in 'perf
- * trace', in the next csets we'll hook up these with the sys_enter/sys_exit
- * code that will combine entry/exit in a strace like way.
*/
#include <linux/bpf.h>
--
2.41.0.640.ga95def55d0-goog
next prev parent reply other threads:[~2023-08-10 18:49 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-10 18:48 [PATCH v1 0/4] Remove BPF event support Ian Rogers
2023-08-10 18:48 ` [PATCH v1 1/4] perf parse-events: " Ian Rogers
2023-08-11 14:43 ` Arnaldo Carvalho de Melo
2023-08-11 15:41 ` Arnaldo Carvalho de Melo
2023-10-19 19:45 ` Manu Bretelle
2023-10-19 21:08 ` Arnaldo Carvalho de Melo
2023-10-19 21:57 ` Ian Rogers
2023-10-19 22:48 ` Manu Bretelle
2023-10-20 20:39 ` Arnaldo Carvalho de Melo
2023-10-20 22:37 ` Manu Bretelle
2023-10-23 9:01 ` Quentin Monnet
2023-08-10 18:48 ` [PATCH v1 2/4] perf trace: Migrate BPF augmentation to use a skeleton Ian Rogers
2023-08-11 16:09 ` Jiri Olsa
2023-08-11 16:24 ` Ian Rogers
2023-08-11 18:46 ` Arnaldo Carvalho de Melo
2023-08-15 14:25 ` Arnaldo Carvalho de Melo
[not found] ` <CAP-5=fURf+vv3TA4cRx1MiV3DDp=3wo0g5dBYH43DKtPhNZQsQ@mail.gmail.com>
2023-08-16 13:11 ` Arnaldo Carvalho de Melo
2023-08-16 13:22 ` Arnaldo Carvalho de Melo
2023-08-16 16:08 ` Arnaldo Carvalho de Melo
2023-08-16 17:14 ` Arnaldo Carvalho de Melo
2023-08-16 18:15 ` Ian Rogers
2023-08-10 18:48 ` [PATCH v1 3/4] perf bpf examples: With no BPF events remove examples Ian Rogers
2023-08-10 18:48 ` Ian Rogers [this message]
2023-08-11 16:09 ` [PATCH v1 0/4] Remove BPF event support Jiri Olsa
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230810184853.2860737-5-irogers@google.com \
--to=irogers@google.com \
--cc=acme@kernel.org \
--cc=adrian.hunter@intel.com \
--cc=ak@linux.intel.com \
--cc=alexander.shishkin@linux.intel.com \
--cc=andrii@kernel.org \
--cc=anshuman.khandual@arm.com \
--cc=atrajeev@linux.vnet.ibm.com \
--cc=bobo.shaobowang@huawei.com \
--cc=bpf@vger.kernel.org \
--cc=brendan.d.gregg@gmail.com \
--cc=carsten.haitzler@arm.com \
--cc=eddyz87@gmail.com \
--cc=hekuang@huawei.com \
--cc=james.clark@arm.com \
--cc=jolsa@kernel.org \
--cc=kan.liang@linux.intel.com \
--cc=leo.yan@linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-perf-users@vger.kernel.org \
--cc=llvm@lists.linux.dev \
--cc=maddy@linux.ibm.com \
--cc=mark.rutland@arm.com \
--cc=maskray@google.com \
--cc=mingo@redhat.com \
--cc=namhyung@kernel.org \
--cc=nathan@kernel.org \
--cc=naveen.n.rao@linux.vnet.ibm.com \
--cc=ndesaulniers@google.com \
--cc=peterz@infradead.org \
--cc=ravi.bangoria@amd.com \
--cc=robh@kernel.org \
--cc=trix@redhat.com \
--cc=wangnan0@huawei.com \
--cc=yangjihong1@huawei.com \
--cc=yangtiezhu@loongson.cn \
--cc=yhs@fb.com \
--cc=yuehaibing@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).