linux-kernel - Re: [PATCH 4/4] perf tools: Move syscall

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Date:   Fri, 20 Jul 2018 17:14:09 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...nel.org>, lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        David Ahern <dsahern@...il.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH 4/4] perf tools: Move syscall_64.tbl check into
 check-headers.sh

On Fri, Jul 20, 2018 at 12:03:54PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Fri, Jul 20, 2018 at 01:00:36PM +0200, Jiri Olsa escreveu:
> > Probably leftover from the time we introducd the check-headers.sh script.
> 
> So, with your patch:
> 
> [acme@...et perf]$ git diff
> diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl
> index f0b1709a5ffb..cfc1b0949bb1 100644
> --- a/arch/x86/entry/syscalls/syscall_64.tbl
> +++ b/arch/x86/entry/syscalls/syscall_64.tbl
> @@ -343,6 +343,7 @@
>  332    common  statx                   __x64_sys_statx
>  333    common  io_pgetevents           __x64_sys_io_pgetevents
>  334    common  rseq                    __x64_sys_rseq
> +335    common  krava                   __x64_sys_krava
>  
>  #
>  # x32-specific system call numbers start at 512 to avoid cache impact
> [acme@...et perf]$
> 
> 
> It doesn't warn about that new cool syscall, without your patch:
> 
> Warning: Kernel ABI header at 'tools/perf/arch/x86/entry/syscalls/syscall_64.tbl' differs from latest version at 'arch/x86/entry/syscalls/syscall_64.tbl'
> 
> Can you check this?

hum, did you have the previous patch applied?
without it it displays misleading output 

will check

jirka