提交 59d81029 编写于 作者: A Arnaldo Carvalho de Melo 提交者: Ingo Molnar

perf report: Fix kernel symbol resolution

kallsyms have just the symbol start, so we need to read two lines
to get the len.

[ Impact: fix incorrect kernel symbol display in perf report ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
上级 f17e04af
......@@ -360,9 +360,17 @@ static int load_kallsyms(void)
char *line = NULL;
size_t n;
if (getline(&line, &n, file) < 0 || !line)
goto out_delete_dso;
unsigned long long previous_start;
char c, previous_symbf[4096];
if (sscanf(line, "%llx %c %s", &previous_start, &c, previous_symbf) != 3)
goto out_delete_line;
while (!feof(file)) {
unsigned long long start;
char c, symbf[4096];
char symbf[4096];
if (getline(&line, &n, file) < 0)
break;
......@@ -371,12 +379,18 @@ static int load_kallsyms(void)
goto out_delete_dso;
if (sscanf(line, "%llx %c %s", &start, &c, symbf) == 3) {
struct symbol *sym = symbol__new(start, 0x1000000, symbf);
if (start > previous_start) {
struct symbol *sym = symbol__new(previous_start,
start - previous_start,
previous_symbf);
if (sym == NULL)
goto out_delete_dso;
dso__insert_symbol(kernel_dso, sym);
previous_start = start;
strcpy(previous_symbf, symbf);
}
}
}
......@@ -385,6 +399,8 @@ static int load_kallsyms(void)
fclose(file);
return 0;
out_delete_line:
free(line);
out_delete_dso:
dso__delete(kernel_dso);
return -1;
......
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