perf tools: /proc/modules names don't always match its name
$ cut -d' ' -f1 /proc/modules|grep _|wc -l
29
$ cut -d' ' -f1 /proc/modules|grep _|sed 's/$/.ko'/g|while read n;do find /lib/modules/`uname -r` -name $n;done|wc -l
12
For instance:
$ grep ^aes_x86 /proc/modules
aes_x86_64 9056 2 - Live 0xffffffffa0091000
$ l /lib/modules/2.6.31-tip/kernel/arch/x86/crypto/aes-x86_64.ko
-rw-r--r-- 1 root root 136438 2009-09-22 19:05 /lib/modules/2.6.31-tip/kernel/arch/x86/crypto/aes-x86_64.ko
Handle that by introducing a strxfrchar routine that replaces
dashes with underscores when matching file names to loaded modules.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/util/string.c b/tools/perf/util/string.c
index c93eca9..04743d3 100644
--- a/tools/perf/util/string.c
+++ b/tools/perf/util/string.c
@@ -1,3 +1,4 @@
+#include <string.h>
#include "string.h"
static int hex(char ch)
@@ -32,3 +33,13 @@
return p - ptr;
}
+
+char *strxfrchar(char *s, char from, char to)
+{
+ char *p = s;
+
+ while ((p = strchr(p, from)) != NULL)
+ *p++ = to;
+
+ return s;
+}
diff --git a/tools/perf/util/string.h b/tools/perf/util/string.h
index 15c82747..2c84bf6 100644
--- a/tools/perf/util/string.h
+++ b/tools/perf/util/string.h
@@ -4,6 +4,7 @@
#include "types.h"
int hex2u64(const char *ptr, u64 *val);
+char *strxfrchar(char *s, char from, char to);
#define _STR(x) #x
#define STR(x) _STR(x)
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 4dfdefd..e3eebdd 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -189,7 +189,7 @@
size_t dso__fprintf(struct dso *self, FILE *fp)
{
- size_t ret = fprintf(fp, "dso: %s\n", self->long_name);
+ size_t ret = fprintf(fp, "dso: %s\n", self->short_name);
struct rb_node *nd;
for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) {
@@ -977,6 +977,7 @@
snprintf(dso_name, sizeof(dso_name), "[%.*s]",
(int)(dot - dent->d_name), dent->d_name);
+ strxfrchar(dso_name, '-', '_');
map = kernel_maps__find_by_dso_name(dso_name);
if (map == NULL)
continue;