From: Jiri Olsa <jolsa@redhat.com>
To: Song Liu <songliubraving@fb.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
ast@kernel.org, daniel@iogearbox.net, kernel-team@fb.com,
peterz@infradead.org, acme@redhat.com, jolsa@kernel.org,
namhyung@kernel.org
Subject: Re: [PATCH v5 perf,bpf 08/15] perf, bpf: save btf in a rbtree in perf_env
Date: Mon, 4 Mar 2019 14:52:31 +0100 [thread overview]
Message-ID: <20190304135231.GE19809@krava> (raw)
In-Reply-To: <20190228050643.958685-9-songliubraving@fb.com>
On Wed, Feb 27, 2019 at 09:06:36PM -0800, Song Liu wrote:
> btf contains information necessary to annotate bpf programs. This patch
> saves btf for bpf programs loaded in the system.
>
> Signed-off-by: Song Liu <songliubraving@fb.com>
> ---
> tools/perf/util/bpf-event.c | 24 ++++++++++++++
> tools/perf/util/bpf-event.h | 7 ++++
> tools/perf/util/env.c | 65 +++++++++++++++++++++++++++++++++++++
> tools/perf/util/env.h | 4 +++
> 4 files changed, 100 insertions(+)
>
> diff --git a/tools/perf/util/bpf-event.c b/tools/perf/util/bpf-event.c
> index ce81b2c43a51..370b830f2433 100644
> --- a/tools/perf/util/bpf-event.c
> +++ b/tools/perf/util/bpf-event.c
> @@ -34,6 +34,29 @@ int machine__process_bpf_event(struct machine *machine __maybe_unused,
> return 0;
> }
>
> +static int perf_env__fetch_btf(struct perf_env *env,
> + u32 btf_id,
> + struct btf *btf)
> +{
> + struct btf_node *node;
> + u32 data_size;
> + const void *data;
> +
> + data = btf__get_raw_data(btf, &data_size);
> +
> + node = malloc(data_size + sizeof(struct btf_node));
> +
> + if (!node)
> + return -1;
> +
> + node->id = btf_id;
> + node->data_size = data_size;
> + memcpy(node->data, data, data_size);
why don't we store just struct btf itself?
thanks,
jirka
next prev parent reply other threads:[~2019-03-04 13:52 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-28 5:06 [PATCH v5 perf,bpf 00/15] perf annotation of BPF programs Song Liu
2019-02-28 5:06 ` [PATCH v5 perf,bpf 01/15] perf, bpf: consider events with attr.bpf_event as side-band events Song Liu
2019-02-28 5:06 ` [PATCH v5 perf,bpf 02/15] bpf: libbpf: introduce bpf_program__get_prog_info_linear() Song Liu
2019-02-28 5:06 ` [PATCH v5 perf,bpf 03/15] bpf: bpftool: use bpf_program__get_prog_info_linear() in prog.c:do_dump() Song Liu
2019-02-28 5:06 ` [PATCH v5 perf,bpf 04/15] perf, bpf: synthesize bpf events with bpf_program__get_prog_info_linear() Song Liu
2019-02-28 5:06 ` [PATCH v5 perf,bpf 05/15] perf: change prototype of perf_event__synthesize_bpf_events() Song Liu
2019-02-28 5:06 ` [PATCH v5 perf,bpf 06/15] perf, bpf: save bpf_prog_info in a rbtree in perf_env Song Liu
2019-02-28 5:06 ` [PATCH v5 perf,bpf 07/15] perf, bpf: save bpf_prog_info information as headers to perf.data Song Liu
2019-03-04 13:52 ` Jiri Olsa
2019-03-04 19:36 ` Song Liu
2019-03-04 20:23 ` Jiri Olsa
2019-03-04 20:31 ` Song Liu
2019-03-04 13:52 ` Jiri Olsa
2019-03-04 13:52 ` Jiri Olsa
2019-03-04 19:41 ` Song Liu
2019-03-04 20:37 ` Jiri Olsa
2019-03-04 13:52 ` Jiri Olsa
2019-02-28 5:06 ` [PATCH v5 perf,bpf 08/15] perf, bpf: save btf in a rbtree in perf_env Song Liu
2019-03-04 13:52 ` Jiri Olsa [this message]
2019-03-04 19:43 ` Song Liu
2019-03-04 20:31 ` Jiri Olsa
2019-03-04 13:53 ` Jiri Olsa
2019-02-28 5:06 ` [PATCH v5 perf,bpf 09/15] perf, bpf: save btf information as headers to perf.data Song Liu
2019-03-04 13:52 ` Jiri Olsa
2019-02-28 5:06 ` [PATCH v5 perf,bpf 10/15] perf-top: add option --no-bpf-event Song Liu
2019-02-28 5:06 ` [PATCH v5 perf,bpf 11/15] perf: add -lopcodes to feature-libbfd Song Liu
2019-02-28 5:06 ` [PATCH v5 perf,bpf 12/15] perf, bpf: enable annotation of bpf program Song Liu
2019-03-04 13:52 ` Jiri Olsa
2019-03-04 13:53 ` Jiri Olsa
2019-03-04 20:52 ` Song Liu
2019-03-04 13:53 ` Jiri Olsa
2019-03-04 19:45 ` Song Liu
2019-03-04 20:37 ` Jiri Olsa
2019-03-04 20:43 ` Song Liu
2019-02-28 5:06 ` [PATCH v5 perf,bpf 13/15] perf, bpf: process PERF_BPF_EVENT_PROG_LOAD for annotation Song Liu
2019-03-04 13:53 ` Jiri Olsa
2019-02-28 5:06 ` [PATCH v5 perf,bpf 14/15] perf: introduce side band thread Song Liu
2019-02-28 5:06 ` [PATCH v5 perf,bpf 15/15] perf, bpf: save bpf_prog_info and btf of short living bpf programs Song Liu
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