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-rw-r--r--scripts/recordmcount.c32
1 files changed, 24 insertions, 8 deletions
diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
index 78054a41d134..0e18975824f7 100644
--- a/scripts/recordmcount.c
+++ b/scripts/recordmcount.c
@@ -24,6 +24,7 @@
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
+#include <getopt.h>
#include <elf.h>
#include <fcntl.h>
#include <setjmp.h>
@@ -39,6 +40,7 @@ static char gpfx; /* prefix for global symbol name (sometimes '_') */
static struct stat sb; /* Remember .st_size, etc. */
static jmp_buf jmpenv; /* setjmp/longjmp per-file error escape */
static const char *altmcount; /* alternate mcount symbol name */
+static int warn_on_notrace_sect; /* warn when section has mcount not being recorded */
/* setjmp() return values */
enum {
@@ -397,19 +399,33 @@ do_file(char const *const fname)
}
int
-main(int argc, char const *argv[])
+main(int argc, char *argv[])
{
const char ftrace[] = "/ftrace.o";
int ftrace_size = sizeof(ftrace) - 1;
int n_error = 0; /* gcc-4.3.0 false positive complaint */
+ int c;
+ int i;
- if (argc <= 1) {
- fprintf(stderr, "usage: recordmcount file.o...\n");
+ while ((c = getopt(argc, argv, "w")) >= 0) {
+ switch (c) {
+ case 'w':
+ warn_on_notrace_sect = 1;
+ break;
+ default:
+ fprintf(stderr, "usage: recordmcount [-w] file.o...\n");
+ return 0;
+ }
+ }
+
+ if ((argc - optind) < 1) {
+ fprintf(stderr, "usage: recordmcount [-w] file.o...\n");
return 0;
}
/* Process each file in turn, allowing deep failure. */
- for (--argc, ++argv; argc > 0; --argc, ++argv) {
+ for (i = optind; i < argc; i++) {
+ char *file = argv[i];
int const sjval = setjmp(jmpenv);
int len;
@@ -418,14 +434,14 @@ main(int argc, char const *argv[])
* function but does not call it. Since ftrace.o should
* not be traced anyway, we just skip it.
*/
- len = strlen(argv[0]);
+ len = strlen(file);
if (len >= ftrace_size &&
- strcmp(argv[0] + (len - ftrace_size), ftrace) == 0)
+ strcmp(file + (len - ftrace_size), ftrace) == 0)
continue;
switch (sjval) {
default:
- fprintf(stderr, "internal error: %s\n", argv[0]);
+ fprintf(stderr, "internal error: %s\n", file);
exit(1);
break;
case SJ_SETJMP: /* normal sequence */
@@ -433,7 +449,7 @@ main(int argc, char const *argv[])
fd_map = -1;
ehdr_curr = NULL;
mmap_failed = 1;
- do_file(argv[0]);
+ do_file(file);
break;
case SJ_FAIL: /* error in do_file or below */
++n_error;