Re: [PATCH net-next] bpf: fix build warnings and add function read_trace_pipe()

[David Miller]

From: Kaixu Xia <xiakaixu@xxxxxxxxxx>
Date: Wed, 12 Aug 2015 09:37:53 +0000

> 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@xxxxxxxxxx>

Applied, thanks.
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