linux-kernel - Re: [PATCH 02/21] perf c2c: Dump raw records, decode data

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Date:	Tue, 18 Feb 2014 13:53:35 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Don Zickus <dzickus@...hat.com>
Cc:	acme@...stprotocols.net, LKML <linux-kernel@...r.kernel.org>,
	jmario@...hat.com, fowles@...each.com, eranian@...gle.com,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Mike Galbraith <efault@....de>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Richard Fowles <rfowles@...hat.com>
Subject: Re: [PATCH 02/21] perf c2c: Dump raw records, decode data_src bits

On Mon, Feb 10, 2014 at 12:28:57PM -0500, Don Zickus wrote:
> From: Arnaldo Carvalho de Melo <acme@...hat.com>
> 
> From the c2c prototype:
> 
> [root@...dy ~]# perf c2c -r report | head -7
> T Status    Pid Tid CPU          Inst Adrs     Virt Data Adrs Phys Data Adrs Cycles Source      Decoded Source                ObJect:Symbol
> --------------------------------------------------------------------------------------------------------------------------------------------
>   raw input 779 779   7 0xffffffff810865dd 0xffff8803f4d75ec8              0    370 0x68080882 [LOAD,LCL_LLC,MISS,SNP NA]    [kernel.kallsyms]:try_to_wake_up
>   raw input 779 779   7 0xffffffff8107acb3 0xffff8802a5b73158              0    297 0x6a100142 [LOAD,L1,HIT,SNP NONE,LOCKED] [kernel.kallsyms]:up_read
>   raw input 779 779   7       0x3b7e009814     0x7fff87429ea0              0    925 0x68100142 [LOAD,L1,HIT,SNP NONE]        ???:???
>   raw input   0   0   1 0xffffffff8108bf81 0xffff8803eafebf50              0    172 0x68800842 [LOAD,LCL_LLC,HIT,SNP HITM]   [kernel.kallsyms]:update_stats_wait_end
>   raw input 779 779   7       0x3b7e0097cc     0x7fac94b69068              0    228 0x68100242 [LOAD,LFB,HIT,SNP NONE]       ???:???
> [root@...dy ~]#
> 
> The "Phys Data Adrs" column is not available at this point.

SNIP

> +		       sample->data_src,
> +		       data_src,
> +		       al->map ? (al->map->dso ? al->map->dso->long_name : "???") : "???",
> +		       al->sym ? al->sym->name : "???");
> +}
> +
> +static int perf_c2c__process_load_store(struct perf_c2c *c2c,
> +					struct perf_sample *sample,
> +					struct addr_location *al)
> +{
> +	if (c2c->raw_records)
> +		perf_sample__fprintf(sample, ' ', "raw input", al, stdout);
> +
>  	return 0;
>  }
>  
>  static const struct perf_evsel_str_handler handlers[] = {
> -	{ "cpu/mem-loads,ldlat=30/pp", perf_c2c__process_load, },
> -	{ "cpu/mem-stores/pp",	       perf_c2c__process_store, },
> +	{ "cpu/mem-loads,ldlat=30/pp", perf_c2c__process_load_store, },
> +	{ "cpu/mem-stores/pp",	       perf_c2c__process_load_store, },

hm.. so it's only one function for both handlers.. no need
to use handlers at all then, right?

jirka
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