linux-kernel - [tip:perfcounters/core] perf_counter: tools: report: Add comm sorting

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Date:	Wed, 27 May 2009 19:52:19 GMT
From:	tip-bot for Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, acme@...hat.com, paulus@...ba.org,
	hpa@...or.com, mingo@...hat.com, jkacur@...hat.com,
	a.p.zijlstra@...llo.nl, efault@....de, tglx@...utronix.de,
	cjashfor@...ux.vnet.ibm.com, mingo@...e.hu
Subject: [tip:perfcounters/core] perf_counter: tools: report: Add comm sorting

Commit-ID:  992444b173f35997f96f5cbb214f0de81d1b97ff
Gitweb:     http://git.kernel.org/tip/992444b173f35997f96f5cbb214f0de81d1b97ff
Author:     Peter Zijlstra <a.p.zijlstra@...llo.nl>
AuthorDate: Wed, 27 May 2009 20:20:27 +0200
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Wed, 27 May 2009 21:44:14 +0200

perf_counter: tools: report: Add comm sorting

Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: John Kacur <jkacur@...hat.com>
Cc: Mike Galbraith <efault@....de>
LKML-Reference: <20090527182101.129302022@...llo.nl>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 Documentation/perf_counter/builtin-report.c |   30 +++++++++++++++++++++++++++
 1 files changed, 30 insertions(+), 0 deletions(-)

diff --git a/Documentation/perf_counter/builtin-report.c b/Documentation/perf_counter/builtin-report.c
index 982abce..a634022 100644
--- a/Documentation/perf_counter/builtin-report.c
+++ b/Documentation/perf_counter/builtin-report.c
@@ -732,6 +732,35 @@ static struct sort_entry sort_thread = {
 };
 
 static int64_t
+sort__comm_cmp(struct hist_entry *left, struct hist_entry *right)
+{
+	char *comm_l = left->thread->comm;
+	char *comm_r = right->thread->comm;
+
+	if (!comm_l || !comm_r) {
+		if (!comm_l && !comm_r)
+			return 0;
+		else if (!comm_l)
+			return -1;
+		else
+			return 1;
+	}
+
+	return strcmp(comm_l, comm_r);
+}
+
+static size_t
+sort__comm_print(FILE *fp, struct hist_entry *self)
+{
+	return fprintf(fp, "%20s ", self->thread->comm ?: "<unknown>");
+}
+
+static struct sort_entry sort_comm = {
+	.cmp	= sort__comm_cmp,
+	.print	= sort__comm_print,
+};
+
+static int64_t
 sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
 {
 	uint64_t ip_l, ip_r;
@@ -779,6 +808,7 @@ struct sort_dimension {
 
 static struct sort_dimension sort_dimensions[] = {
 	{ .name = "pid",	.entry = &sort_thread,	},
+	{ .name = "comm",	.entry = &sort_comm,	},
 	{ .name = "symbol",	.entry = &sort_sym,	},
 };
 
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