linux-kernel - Re: [PATCH 2/2] perf script: Support dso filter

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 27 Jan 2021 23:15:24 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Jin Yao <yao.jin@...ux.intel.com>
Cc:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com,
        Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH 2/2] perf script: Support dso filter

On Mon, Jan 25, 2021 at 07:27:50AM +0800, Jin Yao wrote:
> Other perf tool builtins have already supported dso filter.
> 
> For example,
> perf report --dso, which only considers symbols in these dsos.
> 
> Now dso filter is supported for perf-script.
> 
> root@...-ppc:~# ./perf script --dso "[kernel.kallsyms]"
>             perf 18123 [000] 6142863.075104:          1   cycles:  ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
>             perf 18123 [000] 6142863.075107:          1   cycles:  ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
>             perf 18123 [000] 6142863.075108:         10   cycles:  ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
>             perf 18123 [000] 6142863.075109:        273   cycles:  ffffffff9ca7730a native_write_msr+0xa ([kernel.kallsyms])
>             perf 18123 [000] 6142863.075110:       7684   cycles:  ffffffff9ca3c9c0 native_sched_clock+0x50 ([kernel.kallsyms])
>             perf 18123 [000] 6142863.075112:     213017   cycles:  ffffffff9d765a92 syscall_exit_to_user_mode+0x32 ([kernel.kallsyms])
>             perf 18123 [001] 6142863.075156:          1   cycles:  ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
>             perf 18123 [001] 6142863.075158:          1   cycles:  ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
>             perf 18123 [001] 6142863.075159:         17   cycles:  ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
> 
> Signed-off-by: Jin Yao <yao.jin@...ux.intel.com>

Acked-by: Jiri Olsa <jolsa@...hat.com>

thanks,
jirka

> ---
>  tools/perf/Documentation/perf-script.txt | 3 +++
>  tools/perf/builtin-script.c              | 2 ++
>  2 files changed, 5 insertions(+)
> 
> diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
> index 0ef2261baeb9..6e32b2f9b828 100644
> --- a/tools/perf/Documentation/perf-script.txt
> +++ b/tools/perf/Documentation/perf-script.txt
> @@ -444,6 +444,9 @@ include::itrace.txt[]
>  	[0x4007a0, 0x0x4007a9]:
>  	perf script -S 0x4007a0 --addr-range 10
>  
> +--dsos=::
> +	Only consider symbols in these dsos.
> +
>  --call-trace::
>  	Show call stream for intel_pt traces. The CPUs are interleaved, but
>  	can be filtered with -C.
> diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
> index e0feda33dbb9..f8d3d8582ea2 100644
> --- a/tools/perf/builtin-script.c
> +++ b/tools/perf/builtin-script.c
> @@ -3523,6 +3523,8 @@ int cmd_script(int argc, const char **argv)
>  		     parse_output_fields),
>  	OPT_BOOLEAN('a', "all-cpus", &system_wide,
>  		    "system-wide collection from all CPUs"),
> +	OPT_STRING(0, "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
> +		   "only consider symbols in these dsos"),
>  	OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
>  		   "only consider these symbols"),
>  	OPT_INTEGER(0, "addr-range", &symbol_conf.addr_range,
> -- 
> 2.17.1
>