From: Alexei Starovoitov <ast@plumgrid.com>
To: Kaixu Xia <xiakaixu@huawei.com>,
daniel@iogearbox.net, davem@davemloft.net
Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
wangnan0@huawei.com, pi3orama@163.com
Subject: Re: [PATCH net-next] bpf: fix build warnings and add function read_trace_pipe()
Date: Wed, 12 Aug 2015 09:25:54 -0700 [thread overview]
Message-ID: <55CB7392.4070701@plumgrid.com> (raw)
In-Reply-To: <1439372273-69958-1-git-send-email-xiakaixu@huawei.com>
On 8/12/15 2:37 AM, Kaixu Xia wrote:
> There are two improvements in this patch:
> 1. Fix the build warnings;
> 2. Add function read_trace_pipe() to print the result on
> the screen;
>
> Before this patch, we can get the result through /sys/kernel/de
> bug/tracing/trace_pipe and get nothing on the screen.
> By applying this patch, the result can be printed on the screen.
> $ ./tracex6
> ...
> tracex6-705 [003] d..1 131.428593: : CPU-3 19981414
> sshd-683 [000] d..1 131.428727: : CPU-0 221682321
> sshd-683 [000] d..1 131.428821: : CPU-0 221808766
> sshd-683 [000] d..1 131.428950: : CPU-0 221982984
> sshd-683 [000] d..1 131.429045: : CPU-0 222111851
> tracex6-705 [003] d..1 131.429168: : CPU-3 20757551
> sshd-683 [000] d..1 131.429170: : CPU-0 222281240
> sshd-683 [000] d..1 131.429261: : CPU-0 222403340
> sshd-683 [000] d..1 131.429378: : CPU-0 222561024
> ...
>
> Signed-off-by: Kaixu Xia<xiakaixu@huawei.com>
thanks!
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
next prev parent reply other threads:[~2015-08-12 16:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-12 9:37 [PATCH net-next] bpf: fix build warnings and add function read_trace_pipe() Kaixu Xia
2015-08-12 16:25 ` Alexei Starovoitov [this message]
2015-08-12 23:39 ` David Miller
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