From: Alexei Starovoitov <ast@plumgrid.com>
To: Wang Nan <wangnan0@huawei.com>,
acme@kernel.org, brendan.d.gregg@gmail.com
Cc: a.p.zijlstra@chello.nl, daniel@iogearbox.net, dsahern@gmail.com,
hekuang@huawei.com, jolsa@kernel.org, lizefan@huawei.com,
masami.hiramatsu.pt@hitachi.com, namhyung@kernel.org,
paulus@samba.org, linux-kernel@vger.kernel.org, pi3orama@163.com,
xiakaixu@huawei.com
Subject: Re: [RFC PATCH 0/7] perf tools: Config BPF maps through perf cmdline
Date: Sat, 17 Oct 2015 13:35:13 -0700 [thread overview]
Message-ID: <5622B101.9070404@plumgrid.com> (raw)
In-Reply-To: <1445078910-73699-1-git-send-email-wangnan0@huawei.com>
On 10/17/15 3:48 AM, Wang Nan wrote:
> In these 7 patches:
>
> 1. perf is able to put values into map:
> # perf record -e mybpf.c/maps.values.value=1234/ ...
>
> 2. perf is able to control different slots in a map separately:
> # perf record -e mybpf.c/maps.values.value[1,4-6]=1234,maps.values.value[0,2-3]=5678/ ...
>
> 3. The second syntax can be applied to perf event also:
> # perf record -v -a -e evt=cycles -e mybpf.c/maps.pmu_map.event[0]=evt/ ...
>
> 4. Compatible with the old syntax:
> # perf record -v -a -e evt=cycles -e mybpf.c/maps.pmu_map.event=evt/ ...
The concept looks good and solves real need.
No opinion on implementation.
next prev parent reply other threads:[~2015-10-17 20:35 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-17 10:48 [RFC PATCH 0/7] perf tools: Config BPF maps through perf cmdline Wang Nan
2015-10-17 10:48 ` [RFC PATCH 1/7] perf tools: Add API to config maps in bpf object Wang Nan
2015-11-20 8:13 ` Wangnan (F)
2015-11-23 11:20 ` Wangnan (F)
2015-10-17 10:48 ` [RFC PATCH 2/7] perf tools: Add API to apply config to BPF map Wang Nan
2015-10-17 10:48 ` [RFC PATCH 3/7] perf record: Apply config to BPF objects before recording Wang Nan
2015-10-17 10:48 ` [RFC PATCH 4/7] perf tools: Enable BPF object configure syntax Wang Nan
2015-10-23 4:48 ` Wangnan (F)
2015-10-17 10:48 ` [RFC PATCH 5/7] perf tools: Support setting different slots in a BPF map separately Wang Nan
2015-11-20 13:25 ` Wangnan (F)
2015-11-20 15:34 ` Arnaldo Carvalho de Melo
2015-11-23 2:01 ` Wangnan (F)
2015-11-23 5:45 ` Wangnan (F)
2015-10-17 10:48 ` [RFC PATCH 6/7] perf tools: Enable indics setting syntax for BPF maps Wang Nan
2015-10-17 10:48 ` [RFC PATCH 7/7] perf tools: Enable passing event to BPF object Wang Nan
2015-10-17 20:35 ` Alexei Starovoitov [this message]
2015-10-17 23:58 ` [RFC PATCH 0/7] perf tools: Config BPF maps through perf cmdline Wangnan (F)
2015-10-18 0:07 ` Alexei Starovoitov
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