linux-kernel - [PATCH v2] perf: fix building warning on ARM 32.

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Message-ID: <1418710746-35943-1-git-send-email-wangnan0@huawei.com>
Date:	Tue, 16 Dec 2014 14:19:06 +0800
From:	Wang Nan <wangnan0@...wei.com>
To:	<a.p.zijlstra@...llo.nl>, <paulus@...ba.org>, <mingo@...hat.com>,
	<acme@...nel.org>, <ak@...ux.intel.com>, <namhyung@...nel.org>
CC:	<lizefan@...wei.com>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] perf: fix building warning on ARM 32.

Commit 85c116a6c introduces asprintf() call and matches '%ld' to a u64
argument, which is incorrect on ARM:

   CC       /home/wn/util/srcline.o
 util/srcline.c: In function 'get_srcline':
 util/srcline.c:297:6: error: format '%ld' expects argument of type 'long int', but argument 4 has type 'u64' [-Werror=format]
 cc1: all warnings being treated as errors
 make[1]: *** [/home/wn/util/srcline.o] Error 1

In addition, all users of get_srcline() use u64 addr, and libbfd
also use 64 bit bfd_vma as address. This patch also fix prototype
of get_srcline() and addr2line() to use u64 addr instead of
unsigned long.

Signed-off-by: Wang Nan <wangnan0@...wei.com>
---
 tools/perf/util/srcline.c | 12 ++++++------
 tools/perf/util/util.h    |  2 +-
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c
index e73b6a5..c93fb0c 100644
--- a/tools/perf/util/srcline.c
+++ b/tools/perf/util/srcline.c
@@ -20,7 +20,7 @@
 
 struct a2l_data {
 	const char 	*input;
-	unsigned long 	addr;
+	u64	 	addr;
 
 	bool 		found;
 	const char 	*filename;
@@ -147,7 +147,7 @@ static void addr2line_cleanup(struct a2l_data *a2l)
 	free(a2l);
 }
 
-static int addr2line(const char *dso_name, unsigned long addr,
+static int addr2line(const char *dso_name, u64 addr,
 		     char **file, unsigned int *line, struct dso *dso)
 {
 	int ret = 0;
@@ -193,7 +193,7 @@ void dso__free_a2l(struct dso *dso)
 
 #else /* HAVE_LIBBFD_SUPPORT */
 
-static int addr2line(const char *dso_name, unsigned long addr,
+static int addr2line(const char *dso_name, u64 addr,
 		     char **file, unsigned int *line_nr,
 		     struct dso *dso __maybe_unused)
 {
@@ -252,7 +252,7 @@ void dso__free_a2l(struct dso *dso __maybe_unused)
  */
 #define A2L_FAIL_LIMIT 123
 
-char *get_srcline(struct dso *dso, unsigned long addr, struct symbol *sym,
+char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
 		  bool show_sym)
 {
 	char *file = NULL;
@@ -293,10 +293,10 @@ out:
 		dso__free_a2l(dso);
 	}
 	if (sym) {
-		if (asprintf(&srcline, "%s+%ld", show_sym ? sym->name : "",
+		if (asprintf(&srcline, "%s+%" PRIu64, show_sym ? sym->name : "",
 					addr - sym->start) < 0)
 			return SRCLINE_UNKNOWN;
-	} else if (asprintf(&srcline, "%s[%lx]", dso->short_name, addr) < 0)
+	} else if (asprintf(&srcline, "%s[%" PRIx64 "]", dso->short_name, addr) < 0)
 		return SRCLINE_UNKNOWN;
 	return srcline;
 }
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 419bee0..a70ab0c 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -339,7 +339,7 @@ static inline int path__join3(char *bf, size_t size,
 struct dso;
 struct symbol;
 
-char *get_srcline(struct dso *dso, unsigned long addr, struct symbol *sym,
+char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
 		  bool show_sym);
 void free_srcline(char *srcline);
 
-- 
1.8.4

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