linux-kernel - Re: [PATCH 05/15 V3] perf, c2c: Rework setup code to prepare for features

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Date:	Sat, 29 Mar 2014 18:10:18 +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, peterz@...radead.org,
	eranian@...gle.com, andi.kleen@...el.com
Subject: Re: [PATCH 05/15 V3] perf, c2c: Rework setup code to prepare for
 features

On Mon, Mar 24, 2014 at 03:36:56PM -0400, Don Zickus wrote:

SNIP

>  
>  static int perf_c2c__process_load_store(struct perf_c2c *c2c,
> +					struct addr_location *al,
>  					struct perf_sample *sample,
> -					struct addr_location *al)
> +					struct perf_evsel *evsel)
>  {
> -	if (c2c->raw_records)
> -		perf_sample__fprintf(sample, ' ', "raw input", al, stdout);
> +	struct mem_info *mi;
> +
> +	mi = sample__resolve_mem(sample, al);
> +	if (!mi)
> +		return -ENOMEM;

perhaps not directly related to this patchset, but I needed
attached patch to get resolved data in .bss (static), which
for some reason happened to be located in executable segment

I wonder why we need this VARIABLE/FUNCTION separation at all,
I think Arnaldo told me some archs could have same addresses
for data and functions.. will check ;-)

jirka

---
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index d9d86c6..be6d7cf 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1220,6 +1220,10 @@ static void ip__resolve_data(struct machine *machine, struct thread *thread,
 
 	thread__find_addr_location(thread, machine, m, MAP__VARIABLE, addr,
 				   &al);
+	if (!al.map)
+		thread__find_addr_location(thread, machine, m, MAP__FUNCTION, addr,
+					   &al);
+
 	ams->addr = addr;
 	ams->al_addr = al.addr;
 	ams->sym = al.sym;
--
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