From: Jiri Olsa <jolsa@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Jiri Olsa <jolsa@kernel.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Namhyung Kim <namhyung@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Michael Petlan <mpetlan@redhat.com>,
Song Liu <songliubraving@fb.com>, Ian Rogers <irogers@google.com>,
Stephane Eranian <eranian@google.com>,
Alexey Budankov <alexey.budankov@linux.intel.com>,
Andi Kleen <ak@linux.intel.com>,
Adrian Hunter <adrian.hunter@intel.com>
Subject: Re: [PATCH 03/24] perf: Add build id data in mmap2 event
Date: Thu, 26 Nov 2020 17:55:18 +0100 [thread overview]
Message-ID: <20201126165518.GQ2164284@krava> (raw)
In-Reply-To: <20201117111334.GL3121392@hirez.programming.kicks-ass.net>
On Tue, Nov 17, 2020 at 12:13:34PM +0100, Peter Zijlstra wrote:
> On Tue, Nov 17, 2020 at 12:00:32PM +0100, Jiri Olsa wrote:
> > Adding support to carry build id data in mmap2 event.
> >
> > The build id data replaces maj/min/ino/ino_generation
> > fields, which are also used to identify map's binary,
> > so it's ok to replace them with build id data:
> >
> > union {
> > struct {
> > u32 maj;
> > u32 min;
> > u64 ino;
> > u64 ino_generation;
> > };
> > struct {
> > u8 build_id_size;
> > u8 __reserved_1;
> > u16 __reserved_2;
> > u8 build_id[20];
> > };
> > };
> >
> > Replaced maj/min/ino/ino_generation fields give us size
> > of 24 bytes. We use 20 bytes for build id data, 1 byte
> > for size and rest is unused.
> >
> > There's new misc bit for mmap2 to signal there's build
> > id data in it:
> >
> > #define PERF_RECORD_MISC_MMAP_BUILD_ID (1 << 14)
> >
> > Signed-off-by: Jiri Olsa <jolsa@kernel.org>
>
> Seems sane enough; how do we want to route this?
>
> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
>
I still need review from bpf folks, but then I guess
Arnaldo's tree would be the best, because it's mostly
tools changes.. I'm sending new version
jirka
next prev parent reply other threads:[~2020-11-26 16:55 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-17 11:00 [PATCHv2 00/24] perf: Add mmap2 build id support Jiri Olsa
2020-11-17 11:00 ` [PATCH 01/24] bpf: Move stack_map_get_build_id into lib Jiri Olsa
2020-11-17 11:00 ` [PATCH 02/24] bpf: Add size arg to build_id_parse function Jiri Olsa
2020-11-17 11:00 ` [PATCH 03/24] perf: Add build id data in mmap2 event Jiri Olsa
2020-11-17 11:13 ` Peter Zijlstra
2020-11-26 16:55 ` Jiri Olsa [this message]
2020-11-17 11:00 ` [PATCH 04/24] tools headers uapi: Sync tools/include/uapi/linux/perf_event.h Jiri Olsa
2020-11-17 11:00 ` [PATCH 05/24] perf tools: Do not swap mmap2 fields in case it contains build id Jiri Olsa
2020-11-17 11:00 ` [PATCH 06/24] perf tools: Add build_id__is_defined function Jiri Olsa
[not found] ` <CAP-5=fUrf9Kq3XwKALSZut3M6NXtnJCAMw0Pe2rh8_31a7tX4w@mail.gmail.com>
2020-11-17 20:53 ` Jiri Olsa
2020-11-17 23:33 ` Arnaldo Carvalho de Melo
2020-11-18 9:35 ` Jiri Olsa
2020-11-17 11:00 ` [PATCH 07/24] perf tools: Add filename__decompress function Jiri Olsa
2020-11-17 11:00 ` [PATCH 08/24] perf tools: Add support to read build id from compressed elf Jiri Olsa
2020-11-17 12:33 ` Arnaldo Carvalho de Melo
2020-11-17 11:00 ` [PATCH 09/24] perf tools: Add check for existing link in buildid dir Jiri Olsa
[not found] ` <CAP-5=fVc9i2EXPEqzOEHt5xrxqXiR_58KettKqrR9GJdic4sOQ@mail.gmail.com>
2020-11-18 9:11 ` Jiri Olsa
2020-11-17 11:00 ` [PATCH 10/24] perf tools: Use struct extra_kernel_map in machine__process_kernel_mmap_event Jiri Olsa
2020-11-17 11:00 ` [PATCH 11/24] perf tools: Try to load vmlinux from buildid database Jiri Olsa
2020-11-17 11:00 ` [PATCH 12/24] perf tools: Store build id from mmap2 events Jiri Olsa
2020-11-17 12:38 ` Arnaldo Carvalho de Melo
2020-11-17 14:38 ` Jiri Olsa
2020-11-17 11:00 ` [PATCH 13/24] perf tools: Allow mmap2 event to synthesize kernel image Jiri Olsa
2020-11-17 12:44 ` Arnaldo Carvalho de Melo
2020-11-17 15:16 ` Jiri Olsa
2020-11-17 17:43 ` Arnaldo Carvalho de Melo
2020-11-17 20:45 ` Jiri Olsa
2020-11-17 11:00 ` [PATCH 14/24] perf tools: Allow mmap2 event to synthesize modules Jiri Olsa
2020-11-17 12:46 ` Arnaldo Carvalho de Melo
2020-11-17 11:00 ` [PATCH 15/24] perf tools: Synthesize build id for kernel/modules/tasks Jiri Olsa
2020-11-17 12:47 ` Arnaldo Carvalho de Melo
2020-11-17 11:00 ` [PATCH 16/24] perf tools: Add support to display build id for mmap2 events Jiri Olsa
2020-11-17 11:00 ` [PATCH 17/24] perf tools: Use machine__for_each_dso in perf_session__cache_build_ids Jiri Olsa
2020-11-17 11:00 ` [PATCH 18/24] perf tools: Add __perf_session__cache_build_ids function Jiri Olsa
2020-11-17 11:00 ` [PATCH 19/24] perf tools: Add is_perf_data function Jiri Olsa
2020-11-17 11:00 ` [PATCH 20/24] perf tools: Add build_id_cache__add function Jiri Olsa
2020-11-17 11:00 ` [PATCH 21/24] perf buildid-cache: Add support to add build ids from perf data Jiri Olsa
2020-11-17 12:48 ` Arnaldo Carvalho de Melo
2020-11-17 11:00 ` [PATCH 22/24] perf buildid-cache: Add --debuginfod option Jiri Olsa
2020-11-17 12:49 ` Arnaldo Carvalho de Melo
2020-11-17 11:00 ` [PATCH 23/24] perf buildid-list: Add support for mmap2's buildid events Jiri Olsa
2020-11-17 12:50 ` Arnaldo Carvalho de Melo
2020-11-17 15:21 ` Jiri Olsa
2020-11-17 17:54 ` Arnaldo Carvalho de Melo
2020-11-17 20:50 ` Jiri Olsa
2020-11-17 11:00 ` [PATCH 24/24] perf record: Add --buildid-mmap option to enable mmap's build id Jiri Olsa
-- strict thread matches above, loose matches on Subject: below --
2020-11-09 21:53 [PATCH 00/24] perf: Add mmap2 build id support Jiri Olsa
2020-11-09 21:53 ` [PATCH 03/24] perf: Add build id data in mmap2 event Jiri Olsa
2020-11-10 8:07 ` Peter Zijlstra
2020-11-10 10:08 ` Jiri Olsa
2020-11-10 11:54 ` Arnaldo Carvalho de Melo
2020-11-10 12:22 ` Peter Zijlstra
2020-11-10 15:25 ` Arnaldo Carvalho de Melo
2020-11-10 8:28 ` Peter Zijlstra
2020-11-10 10:10 ` Jiri Olsa
2020-11-10 18:23 ` Jiri Olsa
2020-11-10 18:55 ` Arnaldo Carvalho de Melo
2020-11-11 15:54 ` Jiri Olsa
2020-11-13 4:29 ` Namhyung Kim
2020-11-13 11:01 ` 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=20201126165518.GQ2164284@krava \
--to=jolsa@redhat.com \
--cc=acme@kernel.org \
--cc=adrian.hunter@intel.com \
--cc=ak@linux.intel.com \
--cc=alexander.shishkin@linux.intel.com \
--cc=alexey.budankov@linux.intel.com \
--cc=eranian@google.com \
--cc=irogers@google.com \
--cc=jolsa@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=mingo@kernel.org \
--cc=mpetlan@redhat.com \
--cc=namhyung@kernel.org \
--cc=peterz@infradead.org \
--cc=songliubraving@fb.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