linux-kernel - Re: [PATCH] perf, tools, report: Add support for srcfile sort key

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Date:	Sun, 9 Aug 2015 12:30:49 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>, jolsa@...nel.org,
	linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH] perf, tools, report: Add support for srcfile sort key

Hi Andi,

On Sat, Aug 08, 2015 at 04:27:35AM +0200, Andi Kleen wrote:
> On Fri, Aug 07, 2015 at 09:02:15PM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Fri, Aug 07, 2015 at 08:51:45PM -0300, Arnaldo Carvalho de Melo escreveu:
> > > Em Fri, Aug 07, 2015 at 03:54:24PM -0700, Andi Kleen escreveu:
> > > > From: Andi Kleen <ak@...ux.intel.com>
> > > > 
> > > > In some cases it's useful to characterize samples by file. This is useful
> > > > to get a higher level categorization, for example to map cost to
> > > > subsystems.
> > > > 
> > > > Add a srcfile sort key to perf report. It builds on top of the existing
> > > > srcline support.
> > > 
> > > Applied
> > 
> > Humm, holding this up a bit, further testing showed some oddities,
> > fedora21, the width of the column is being limited to the lenght of the
> > header
> 
> Yes I've seen that, I just use -w normally. It also happens with --sort
> srcline. The column sizing code could probably be somewhat smarter and
> always allow the last column to become as wide as needed. But that's
> something that should be done separately; I don't think it belongs
> into this patch.

Maybe something like this?



>From c052d17ae45ac08a381192191473ed3c4308c0c5 Mon Sep 17 00:00:00 2001
From: Namhyung Kim <namhyung@...nel.org>
Date: Sun, 9 Aug 2015 12:28:01 +0900
Subject: [PATCH] perf tools: Update srcline column length

It didn't calculate the column length so the default of header length
used only.  Update the length when we get the srcline actually.

Cc: Andi Kleen <andi@...stfloor.org>
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/util/sort.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 5177088a71d3..85e7e3e75d39 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -291,6 +291,8 @@ sort__srcline_cmp(struct hist_entry *left, struct hist_entry *right)
 			left->srcline = get_srcline(map->dso,
 					   map__rip_2objdump(map, left->ip),
 						    left->ms.sym, true);
+			hists__new_col_len(left->hists, HISTC_SRCLINE,
+					   strlen(left->srcline));
 		}
 	}
 	if (!right->srcline) {
@@ -301,6 +303,8 @@ sort__srcline_cmp(struct hist_entry *left, struct hist_entry *right)
 			right->srcline = get_srcline(map->dso,
 					     map__rip_2objdump(map, right->ip),
 						     right->ms.sym, true);
+			hists__new_col_len(right->hists, HISTC_SRCLINE,
+					   strlen(right->srcline));
 		}
 	}
 	return strcmp(right->srcline, left->srcline);
-- 
2.5.0

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