linux-kernel - [tip:perfcounters/core] pref_counter: tools: report: Add --sort option

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Message-ID: <tip-37f440cba299bb479cf45d12eef923f0979dbcaf@git.kernel.org>
Date:	Wed, 27 May 2009 19:52:08 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] pref_counter: tools: report: Add --sort option

Commit-ID:  37f440cba299bb479cf45d12eef923f0979dbcaf
Gitweb:     http://git.kernel.org/tip/37f440cba299bb479cf45d12eef923f0979dbcaf
Author:     Peter Zijlstra <a.p.zijlstra@...llo.nl>
AuthorDate: Wed, 27 May 2009 20:20:26 +0200
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Wed, 27 May 2009 21:44:14 +0200

pref_counter: tools: report: Add --sort option

option parsing for dynamic 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: <20090527182101.041817692@...llo.nl>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 Documentation/perf_counter/builtin-report.c |   43 +++++++++++++++++++++++++-
 1 files changed, 41 insertions(+), 2 deletions(-)

diff --git a/Documentation/perf_counter/builtin-report.c b/Documentation/perf_counter/builtin-report.c
index 856186f..982abce 100644
--- a/Documentation/perf_counter/builtin-report.c
+++ b/Documentation/perf_counter/builtin-report.c
@@ -20,6 +20,7 @@
 
 static char		const *input_name = "perf.data";
 static char		*vmlinux = NULL;
+static char		*sort_order = "pid,symbol";
 static int		input;
 static int		show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
 
@@ -770,12 +771,49 @@ static struct sort_entry sort_sym = {
 	.print	= sort__sym_print,
 };
 
+struct sort_dimension {
+	char *name;
+	struct sort_entry *entry;
+	int taken;
+};
+
+static struct sort_dimension sort_dimensions[] = {
+	{ .name = "pid",	.entry = &sort_thread,	},
+	{ .name = "symbol",	.entry = &sort_sym,	},
+};
+
 static LIST_HEAD(hist_entry__sort_list);
 
+static int sort_dimension__add(char *tok)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(sort_dimensions); i++) {
+		struct sort_dimension *sd = &sort_dimensions[i];
+
+		if (sd->taken)
+			continue;
+
+		if (strcmp(tok, sd->name))
+			continue;
+
+		list_add_tail(&sd->entry->list, &hist_entry__sort_list);
+		sd->taken = 1;
+		return 0;
+	}
+
+	return -ESRCH;
+}
+
 static void setup_sorting(void)
 {
-	list_add_tail(&sort_thread.list, &hist_entry__sort_list);
-	list_add_tail(&sort_sym.list, &hist_entry__sort_list);
+	char *tmp, *tok, *str = strdup(sort_order);
+
+	for (tok = strtok_r(str, ", ", &tmp);
+			tok; tok = strtok_r(NULL, ", ", &tmp))
+		sort_dimension__add(tok);
+
+	free(str);
 }
 
 static int64_t
@@ -1137,6 +1175,7 @@ static const struct option options[] = {
 	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 		    "dump raw trace in ASCII"),
 	OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"),
+	OPT_STRING('s', "sort", &sort_order, "foo", "bar"),
 	OPT_END()
 };
 
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