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-rw-r--r--tools/perf/builtin-test.c23
-rw-r--r--tools/perf/util/event.c3
-rw-r--r--tools/perf/util/probe-event.c2
-rw-r--r--tools/perf/util/symbol.c56
-rw-r--r--tools/perf/util/symbol.h2
5 files changed, 65 insertions, 21 deletions
diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index 035b9fa063a9..e0c3f471f22d 100644
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -119,10 +119,16 @@ static int test__vmlinux_matches_kallsyms(void)
* end addresses too.
*/
for (nd = rb_first(&vmlinux_map->dso->symbols[type]); nd; nd = rb_next(nd)) {
- struct symbol *pair;
+ struct symbol *pair, *first_pair;
+ bool backwards = true;
sym = rb_entry(nd, struct symbol, rb_node);
- pair = machine__find_kernel_symbol(&kallsyms, type, sym->start, NULL, NULL);
+
+ if (sym->start == sym->end)
+ continue;
+
+ first_pair = machine__find_kernel_symbol(&kallsyms, type, sym->start, NULL, NULL);
+ pair = first_pair;
if (pair && pair->start == sym->start) {
next_pair:
@@ -143,8 +149,10 @@ next_pair:
pr_debug("%#Lx: diff end addr for %s v: %#Lx k: %#Lx\n",
sym->start, sym->name, sym->end, pair->end);
} else {
- struct rb_node *nnd = rb_prev(&pair->rb_node);
-
+ struct rb_node *nnd;
+detour:
+ nnd = backwards ? rb_prev(&pair->rb_node) :
+ rb_next(&pair->rb_node);
if (nnd) {
struct symbol *next = rb_entry(nnd, struct symbol, rb_node);
@@ -153,6 +161,13 @@ next_pair:
goto next_pair;
}
}
+
+ if (backwards) {
+ backwards = false;
+ pair = first_pair;
+ goto detour;
+ }
+
pr_debug("%#Lx: diff name v: %s k: %s\n",
sym->start, sym->name, pair->name);
}
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 183aedd4db83..2302ec051bb4 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -332,7 +332,8 @@ struct process_symbol_args {
u64 start;
};
-static int find_symbol_cb(void *arg, const char *name, char type, u64 start)
+static int find_symbol_cb(void *arg, const char *name, char type,
+ u64 start, u64 end __used)
{
struct process_symbol_args *args = arg;
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 099336ed34b4..4bde988a0b04 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -309,7 +309,7 @@ static int __show_one_line(FILE *fp, int l, bool skip, bool show_num)
return 1;
error:
if (ferror(fp)) {
- pr_warning("Source file is shorter than expected.\n");
+ pr_warning("File read error: %s\n", strerror(errno));
return -1;
}
return 0;
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 561db6361f57..2ea1a2e4c0c2 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -22,6 +22,10 @@
#include <limits.h>
#include <sys/utsname.h>
+#ifndef KSYM_NAME_LEN
+#define KSYM_NAME_LEN 128
+#endif
+
#ifndef NT_GNU_BUILD_ID
#define NT_GNU_BUILD_ID 3
#endif
@@ -93,7 +97,7 @@ static void symbols__fixup_end(struct rb_root *self)
prev = curr;
curr = rb_entry(nd, struct symbol, rb_node);
- if (prev->end == prev->start)
+ if (prev->end == prev->start && prev->end != curr->start)
prev->end = curr->start - 1;
}
@@ -426,16 +430,25 @@ size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp)
int kallsyms__parse(const char *filename, void *arg,
int (*process_symbol)(void *arg, const char *name,
- char type, u64 start))
+ char type, u64 start, u64 end))
{
char *line = NULL;
size_t n;
- int err = 0;
+ int err = -1;
+ u64 prev_start = 0;
+ char prev_symbol_type = 0;
+ char *prev_symbol_name;
FILE *file = fopen(filename, "r");
if (file == NULL)
goto out_failure;
+ prev_symbol_name = malloc(KSYM_NAME_LEN);
+ if (prev_symbol_name == NULL)
+ goto out_close;
+
+ err = 0;
+
while (!feof(file)) {
u64 start;
int line_len, len;
@@ -455,14 +468,33 @@ int kallsyms__parse(const char *filename, void *arg,
continue;
symbol_type = toupper(line[len]);
- symbol_name = line + len + 2;
+ len += 2;
+ symbol_name = line + len;
+ len = line_len - len;
- err = process_symbol(arg, symbol_name, symbol_type, start);
- if (err)
+ if (len >= KSYM_NAME_LEN) {
+ err = -1;
break;
+ }
+
+ if (prev_symbol_type) {
+ u64 end = start;
+ if (end != prev_start)
+ --end;
+ err = process_symbol(arg, prev_symbol_name,
+ prev_symbol_type, prev_start, end);
+ if (err)
+ break;
+ }
+
+ memcpy(prev_symbol_name, symbol_name, len + 1);
+ prev_symbol_type = symbol_type;
+ prev_start = start;
}
+ free(prev_symbol_name);
free(line);
+out_close:
fclose(file);
return err;
@@ -484,7 +516,7 @@ static u8 kallsyms2elf_type(char type)
}
static int map__process_kallsym_symbol(void *arg, const char *name,
- char type, u64 start)
+ char type, u64 start, u64 end)
{
struct symbol *sym;
struct process_kallsyms_args *a = arg;
@@ -493,11 +525,8 @@ static int map__process_kallsym_symbol(void *arg, const char *name,
if (!symbol_type__is_a(type, a->map->type))
return 0;
- /*
- * Will fix up the end later, when we have all symbols sorted.
- */
- sym = symbol__new(start, 0, kallsyms2elf_type(type), name);
-
+ sym = symbol__new(start, end - start + 1,
+ kallsyms2elf_type(type), name);
if (sym == NULL)
return -ENOMEM;
/*
@@ -650,7 +679,6 @@ int dso__load_kallsyms(struct dso *self, const char *filename,
if (dso__load_all_kallsyms(self, filename, map) < 0)
return -1;
- symbols__fixup_end(&self->symbols[map->type]);
if (self->kernel == DSO_TYPE_GUEST_KERNEL)
self->origin = DSO__ORIG_GUEST_KERNEL;
else
@@ -2162,7 +2190,7 @@ struct process_args {
};
static int symbol__in_kernel(void *arg, const char *name,
- char type __used, u64 start)
+ char type __used, u64 start, u64 end __used)
{
struct process_args *args = arg;
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index bcd2f986927e..7b8c27bb1e6b 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -215,7 +215,7 @@ bool __dsos__read_build_ids(struct list_head *head, bool with_hits);
int build_id__sprintf(const u8 *self, int len, char *bf);
int kallsyms__parse(const char *filename, void *arg,
int (*process_symbol)(void *arg, const char *name,
- char type, u64 start));
+ char type, u64 start, u64 end));
void machine__destroy_kernel_maps(struct machine *self);
int __machine__create_kernel_maps(struct machine *self, struct dso *kernel);