linux-kernel - Re: [PATCH 3/4] perf test: Enforce LLVM test: update basic BPF test program

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Date:	Wed, 4 Nov 2015 19:23:58 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Wang Nan <wangnan0@...wei.com>
Cc:	namhyung@...nel.org, lizefan@...wei.com, pi3orama@....com,
	linux-kernel@...r.kernel.org, He Kuang <hekuang@...wei.com>
Subject: Re: [PATCH 3/4] perf test: Enforce LLVM test: update basic BPF test
 program

Em Wed, Nov 04, 2015 at 11:20:06AM +0000, Wang Nan escreveu:
> This patch replaces the original toy BPF program with previous introduced
> bpf-script-example.c. Dynamically embedded it into 'llvm-src-base.c'.
> 
> The newly introduced BPF program attaches a BPF program to
> 'sys_epoll_pwait()'. perf itself never use that syscall, so further test
> can verify their result with it. The program would generate 1 sample
> in every 2 calls of epoll_pwait() system call.
> 
> Since the resuling BPF object is useful, test_llvm__fetch_bpf_obj() is
> introduced for creating BPF objects for source. llvm test is rewritten
> according to it.

[acme@zoo linux]$ am /wb/1.patch 
Applying: perf test: Enforce LLVM test: update basic BPF test program
/home/acme/git/linux/.git/rebase-apply/patch:149: space before tab in indent.
 	*p_obj_buf = NULL;
/home/acme/git/linux/.git/rebase-apply/patch:150: space before tab in indent.
 	*p_obj_buf_sz = 0;
error: patch failed: tools/perf/tests/llvm.c:28
error: tools/perf/tests/llvm.c: patch does not apply
Patch failed at 0001 perf test: Enforce LLVM test: update basic BPF test program
The copy of the patch that failed is found in:
   /home/acme/git/linux/.git/rebase-apply/patch
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".
[acme@zoo linux]$ 

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