From: Jiri Olsa <jolsa@redhat.com>
To: Wang Nan <wangnan0@huawei.com>
Cc: acme@kernel.org, masami.hiramatsu.pt@hitachi.com,
jolsa@kernel.org, linux-kernel@vger.kernel.org, pi3orama@163.com,
lizefan@huawei.com, Alexei Starovoitov <ast@kernel.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Namhyung Kim <namhyung@kernel.org>
Subject: Re: [PATCH v5 10/14] perf tools: Enable indices setting syntax for BPF maps
Date: Wed, 16 Dec 2015 12:24:56 +0100 [thread overview]
Message-ID: <20151216112456.GA6882@krava.brq.redhat.com> (raw)
In-Reply-To: <1450089563-122430-11-git-send-email-wangnan0@huawei.com>
On Mon, Dec 14, 2015 at 10:39:19AM +0000, Wang Nan wrote:
SNIP
> # cat /sys/kernel/debug/tracing/trace | grep usleep
> usleep-405 [004] d... 2745423.547822: : 101
> usleep-655 [006] d... 2745434.122814: : 102
> usleep-904 [006] d... 2745439.916264: : 103
> # ./perf record -e './test_bpf_map_3.c/maps:channel.value[all]=104/' usleep 99
> # cat /sys/kernel/debug/tracing/trace | grep usleep
> usleep-405 [004] d... 2745423.547822: : 101
> usleep-655 [006] d... 2745434.122814: : 102
> usleep-904 [006] d... 2745439.916264: : 103
> usleep-1537 [003] d... 2745538.053737: : 104
>
> Error case:
> # ./perf record -e './test_bpf_map_3.c/maps:channel.value[10...1000]=104/' usleep 99
> event syntax error: '..annel.value[10...1000]=104/'
> \___ Index too large
> Hint: Valid config terms:
> maps:[<arraymap>].value<indices>=[value]
> maps:[<eventmap>].event<indices>=[event]
>
> where <indices> is something like [0,3...5] or [all]
> (add -v to see detail)
> Run 'perf list' for a list of valid events
>
> Usage: perf record [<options>] [<command>]
> or: perf record [<options>] -- <command> [<options>]
>
> -e, --event <event> event selector. use 'perf list' to list available events
>
> Signed-off-by: Wang Nan <wangnan0@huawei.com>
> Cc: Alexei Starovoitov <ast@kernel.org>
> Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
> Cc: Jiri Olsa <jolsa@kernel.org>
> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
> Cc: Namhyung Kim <namhyung@kernel.org>
> Cc: Zefan Li <lizefan@huawei.com>
> Cc: pi3orama@163.com
> ---
> tools/perf/util/parse-events.c | 5 ++-
> tools/perf/util/parse-events.l | 13 ++++++-
> tools/perf/util/parse-events.y | 85 ++++++++++++++++++++++++++++++++++++++++++
Acked-by: Jiri Olsa <jolsa@kernel.org>
thanks,
jirka
next prev parent reply other threads:[~2015-12-16 11:25 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-14 10:39 [PATCH v5 00/14] perf tools: BPF related update and other improvements Wang Nan
2015-12-14 10:39 ` [PATCH v5 01/14] perf tests: Fix incorrect free and false TEST_OK result Wang Nan
2015-12-14 10:39 ` [PATCH v5 02/14] perf tools: Prevent calling machine__delete() on non-allocated machine Wang Nan
2015-12-15 12:36 ` Jiri Olsa
2015-12-16 1:37 ` Wangnan (F)
2015-12-16 19:49 ` Arnaldo Carvalho de Melo
2015-12-14 10:39 ` [PATCH v5 03/14] perf test: Check environment before start real BPF test Wang Nan
2015-12-14 10:39 ` [PATCH v5 04/14] perf tools: Add API to config maps in bpf object Wang Nan
2015-12-14 10:39 ` [PATCH v5 05/14] perf tools: Enable BPF object configure syntax Wang Nan
2015-12-15 13:12 ` Jiri Olsa
2015-12-14 10:39 ` [PATCH v5 06/14] perf record: Apply config to BPF objects before recording Wang Nan
2015-12-14 10:39 ` [PATCH v5 07/14] perf tools: Enable passing event to BPF object Wang Nan
2015-12-14 10:39 ` [PATCH v5 08/14] perf tools: Support perf event alias name Wang Nan
2015-12-15 13:18 ` Jiri Olsa
2015-12-16 1:50 ` Wangnan (F)
2015-12-14 10:39 ` [PATCH v5 09/14] perf tools: Support setting different slots in a BPF map separately Wang Nan
2015-12-14 10:39 ` [PATCH v5 10/14] perf tools: Enable indices setting syntax for BPF maps Wang Nan
2015-12-15 13:42 ` Jiri Olsa
2015-12-16 2:02 ` Wangnan (F)
2015-12-16 7:55 ` Jiri Olsa
2015-12-16 11:24 ` Jiri Olsa [this message]
2015-12-14 10:39 ` [PATCH v5 11/14] perf tools: Introduce bpf-output event Wang Nan
2015-12-14 10:39 ` [PATCH v5 12/14] perf data: Support converting data from bpf_perf_event_output() Wang Nan
2015-12-16 11:29 ` Jiri Olsa
2015-12-14 10:39 ` [PATCH v5 13/14] perf tools: Always give options even it not compiled Wang Nan
2015-12-14 16:00 ` Arnaldo Carvalho de Melo
2015-12-18 8:50 ` [tip:perf/core] perf tools: Make options always available, even if required libs not linked tip-bot for Wang Nan
2015-12-14 10:39 ` [PATCH v5 14/14] perf record: Support custom vmlinux path Wang Nan
2015-12-18 8:51 ` [tip:perf/core] " tip-bot for He Kuang
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