linux-kernel - Re: [PATCH 3/3] perf probe: Do not show @plt function by default

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Message-ID: <9824bd00-3291-3a65-73f1-553410b8eb68@linux.ibm.com>
Date:   Mon, 5 Jul 2021 14:11:11 +0200
From:   Thomas Richter <tmricht@...ux.ibm.com>
To:     Masami Hiramatsu <mhiramat@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     linux-perf-users@...r.kernel.org,
        Sven Schnelle <svens@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Stefan Liebler <stli@...ux.ibm.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] perf probe: Do not show @plt function by default

On 7/3/21 5:35 PM, Masami Hiramatsu wrote:
> From: Masami Hiramatsu <mhriamat@...nel.org>
> 
> Fix the perf-probe --functions option do not show the PLT
> stub symbols (*@plt) by default.
> 
>   -----
>   $ ./perf probe -x /usr/lib64/libc-2.33.so -F | head
>   a64l
>   abort
>   abs
>   accept
>   accept4
>   access
>   acct
>   addmntent
>   addseverity
>   adjtime
>   -----
> 
> Reported-by: Thomas Richter <tmricht@...ux.ibm.com>
> Signed-off-by: Masami Hiramatsu <mhriamat@...nel.org>
> ---
>  tools/perf/builtin-probe.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
> index 2bfd41df621c..e1dd51f2874b 100644
> --- a/tools/perf/builtin-probe.c
> +++ b/tools/perf/builtin-probe.c
> @@ -31,7 +31,7 @@
>  #include <linux/zalloc.h>
>  
>  #define DEFAULT_VAR_FILTER "!__k???tab_* & !__crc_*"
> -#define DEFAULT_FUNC_FILTER "!_*"
> +#define DEFAULT_FUNC_FILTER "!_* & !*@plt"
>  #define DEFAULT_LIST_FILTER "*"
>  
>  /* Session management structure */
> 

Thanks, works again ...

-- 
Thomas Richter, Dept 3303, IBM s390 Linux Development, Boeblingen, Germany
--
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