linux-kernel - [tip:perfcounters/urgent] perf_counter tools: Make symbol loading consistently return number of loaded symbols

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Message-ID: <tip-9974f496782b7612e36a143bedda858f1cb953d4@git.kernel.org>
Date:	Thu, 2 Jul 2009 07:06:31 GMT
From:	tip-bot for Mike Galbraith <efault@....de>
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, a.p.zijlstra@...llo.nl,
	efault@....de, tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perfcounters/urgent] perf_counter tools: Make symbol loading consistently return number of loaded symbols

Commit-ID:  9974f496782b7612e36a143bedda858f1cb953d4
Gitweb:     http://git.kernel.org/tip/9974f496782b7612e36a143bedda858f1cb953d4
Author:     Mike Galbraith <efault@....de>
AuthorDate: Thu, 2 Jul 2009 08:05:58 +0200
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Thu, 2 Jul 2009 08:42:20 +0200

perf_counter tools: Make symbol loading consistently return number of loaded symbols

perf_counter tools: Make symbol loading consistently return number of loaded symbols.

Signed-off-by: Mike Galbraith <efault@....de>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
LKML-Reference: <1246514758.13293.42.camel@...ge.simson.net>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 tools/perf/builtin-annotate.c |    2 +-
 tools/perf/builtin-report.c   |    2 +-
 tools/perf/builtin-top.c      |    2 +-
 tools/perf/util/symbol.c      |    9 ++++++---
 4 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 132de8b..3becc8a 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -172,7 +172,7 @@ static int load_kernel(void)
 		return -1;
 
 	err = dso__load_kernel(kernel_dso, vmlinux, NULL, verbose);
-	if (err) {
+	if (err <= 0) {
 		dso__delete(kernel_dso);
 		kernel_dso = NULL;
 	} else
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index be1b758..58d1612 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -189,7 +189,7 @@ static int load_kernel(void)
 		return -1;
 
 	err = dso__load_kernel(kernel_dso, vmlinux, NULL, verbose);
-	if (err) {
+	if (err <= 0) {
 		dso__delete(kernel_dso);
 		kernel_dso = NULL;
 	} else
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index cdc74cf..97fde1d 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -364,7 +364,7 @@ static int parse_symbols(void)
 	if (kernel_dso == NULL)
 		return -1;
 
-	if (dso__load_kernel(kernel_dso, NULL, symbol_filter, 1) != 0)
+	if (dso__load_kernel(kernel_dso, NULL, symbol_filter, 1) <= 0)
 		goto out_delete_dso;
 
 	node = rb_first(&kernel_dso->syms);
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 78c2efd..c077b6a 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -146,6 +146,7 @@ static int dso__load_kallsyms(struct dso *self, symbol_filter_t filter, int verb
 	char *line = NULL;
 	size_t n;
 	FILE *file = fopen("/proc/kallsyms", "r");
+	int count = 0;
 
 	if (file == NULL)
 		goto out_failure;
@@ -188,8 +189,10 @@ static int dso__load_kallsyms(struct dso *self, symbol_filter_t filter, int verb
 
 		if (filter && filter(self, sym))
 			symbol__delete(sym, self->sym_priv_size);
-		else
+		else {
 			dso__insert_symbol(self, sym);
+			count++;
+		}
 	}
 
 	/*
@@ -212,7 +215,7 @@ static int dso__load_kallsyms(struct dso *self, symbol_filter_t filter, int verb
 	free(line);
 	fclose(file);
 
-	return 0;
+	return count;
 
 out_delete_line:
 	free(line);
@@ -639,7 +642,7 @@ int dso__load_kernel(struct dso *self, const char *vmlinux,
 	if (vmlinux)
 		err = dso__load_vmlinux(self, vmlinux, filter, verbose);
 
-	if (err < 0)
+	if (err <= 0)
 		err = dso__load_kallsyms(self, filter, verbose);
 
 	return err;
--
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