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-rw-r--r--tools/perf/util/data_map.c30
-rw-r--r--tools/perf/util/data_map.h1
-rw-r--r--tools/perf/util/debugfs.c241
-rw-r--r--tools/perf/util/debugfs.h25
-rw-r--r--tools/perf/util/event.h14
-rw-r--r--tools/perf/util/header.c146
-rw-r--r--tools/perf/util/header.h7
-rw-r--r--tools/perf/util/include/linux/bitmap.h1
-rw-r--r--tools/perf/util/include/linux/ctype.h2
-rw-r--r--tools/perf/util/map.c14
-rw-r--r--tools/perf/util/parse-events.c21
-rw-r--r--tools/perf/util/symbol.c110
-rw-r--r--tools/perf/util/symbol.h11
-rw-r--r--tools/perf/util/util.h3
14 files changed, 551 insertions, 75 deletions
diff --git a/tools/perf/util/data_map.c b/tools/perf/util/data_map.c
index c458db9ede6d..aacb814a4eff 100644
--- a/tools/perf/util/data_map.c
+++ b/tools/perf/util/data_map.c
@@ -70,6 +70,36 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
}
}
+int perf_header__read_build_ids(int input, off_t size)
+{
+ struct build_id_event bev;
+ char filename[PATH_MAX];
+ off_t offset = lseek(input, 0, SEEK_CUR);
+ off_t limit = offset + size;
+ int err = -1;
+
+ while (offset < limit) {
+ struct dso *dso;
+ ssize_t len;
+
+ if (read(input, &bev, sizeof(bev)) != sizeof(bev))
+ goto out;
+
+ len = bev.header.size - sizeof(bev);
+ if (read(input, filename, len) != len)
+ goto out;
+
+ dso = dsos__findnew(filename);
+ if (dso != NULL)
+ dso__set_build_id(dso, &bev.build_id);
+
+ offset += bev.header.size;
+ }
+ err = 0;
+out:
+ return err;
+}
+
int mmap_dispatch_perf_file(struct perf_header **pheader,
const char *input_name,
int force,
diff --git a/tools/perf/util/data_map.h b/tools/perf/util/data_map.h
index 716d1053b074..20b4037a8236 100644
--- a/tools/perf/util/data_map.h
+++ b/tools/perf/util/data_map.h
@@ -27,5 +27,6 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
int full_paths,
int *cwdlen,
char **cwd);
+int perf_header__read_build_ids(int input, off_t file_size);
#endif
diff --git a/tools/perf/util/debugfs.c b/tools/perf/util/debugfs.c
new file mode 100644
index 000000000000..06b73ee02c49
--- /dev/null
+++ b/tools/perf/util/debugfs.c
@@ -0,0 +1,241 @@
+#include "util.h"
+#include "debugfs.h"
+#include "cache.h"
+
+static int debugfs_premounted;
+static char debugfs_mountpoint[MAX_PATH+1];
+
+static const char *debugfs_known_mountpoints[] = {
+ "/sys/kernel/debug/",
+ "/debug/",
+ 0,
+};
+
+/* use this to force a umount */
+void debugfs_force_cleanup(void)
+{
+ debugfs_find_mountpoint();
+ debugfs_premounted = 0;
+ debugfs_umount();
+}
+
+/* construct a full path to a debugfs element */
+int debugfs_make_path(const char *element, char *buffer, int size)
+{
+ int len;
+
+ if (strlen(debugfs_mountpoint) == 0) {
+ buffer[0] = '\0';
+ return -1;
+ }
+
+ len = strlen(debugfs_mountpoint) + strlen(element) + 1;
+ if (len >= size)
+ return len+1;
+
+ snprintf(buffer, size-1, "%s/%s", debugfs_mountpoint, element);
+ return 0;
+}
+
+static int debugfs_found;
+
+/* find the path to the mounted debugfs */
+const char *debugfs_find_mountpoint(void)
+{
+ const char **ptr;
+ char type[100];
+ FILE *fp;
+
+ if (debugfs_found)
+ return (const char *) debugfs_mountpoint;
+
+ ptr = debugfs_known_mountpoints;
+ while (*ptr) {
+ if (debugfs_valid_mountpoint(*ptr) == 0) {
+ debugfs_found = 1;
+ strcpy(debugfs_mountpoint, *ptr);
+ return debugfs_mountpoint;
+ }
+ ptr++;
+ }
+
+ /* give up and parse /proc/mounts */
+ fp = fopen("/proc/mounts", "r");
+ if (fp == NULL)
+ die("Can't open /proc/mounts for read");
+
+ while (fscanf(fp, "%*s %"
+ STR(MAX_PATH)
+ "s %99s %*s %*d %*d\n",
+ debugfs_mountpoint, type) == 2) {
+ if (strcmp(type, "debugfs") == 0)
+ break;
+ }
+ fclose(fp);
+
+ if (strcmp(type, "debugfs") != 0)
+ return NULL;
+
+ debugfs_found = 1;
+
+ return debugfs_mountpoint;
+}
+
+/* verify that a mountpoint is actually a debugfs instance */
+
+int debugfs_valid_mountpoint(const char *debugfs)
+{
+ struct statfs st_fs;
+
+ if (statfs(debugfs, &st_fs) < 0)
+ return -ENOENT;
+ else if (st_fs.f_type != (long) DEBUGFS_MAGIC)
+ return -ENOENT;
+
+ return 0;
+}
+
+
+int debugfs_valid_entry(const char *path)
+{
+ struct stat st;
+
+ if (stat(path, &st))
+ return -errno;
+
+ return 0;
+}
+
+/* mount the debugfs somewhere */
+
+int debugfs_mount(const char *mountpoint)
+{
+ char mountcmd[128];
+
+ /* see if it's already mounted */
+ if (debugfs_find_mountpoint()) {
+ debugfs_premounted = 1;
+ return 0;
+ }
+
+ /* if not mounted and no argument */
+ if (mountpoint == NULL) {
+ /* see if environment variable set */
+ mountpoint = getenv(PERF_DEBUGFS_ENVIRONMENT);
+ /* if no environment variable, use default */
+ if (mountpoint == NULL)
+ mountpoint = "/sys/kernel/debug";
+ }
+
+ /* save the mountpoint */
+ strncpy(debugfs_mountpoint, mountpoint, sizeof(debugfs_mountpoint));
+
+ /* mount it */
+ snprintf(mountcmd, sizeof(mountcmd),
+ "/bin/mount -t debugfs debugfs %s", mountpoint);
+ return system(mountcmd);
+}
+
+/* umount the debugfs */
+
+int debugfs_umount(void)
+{
+ char umountcmd[128];
+ int ret;
+
+ /* if it was already mounted, leave it */
+ if (debugfs_premounted)
+ return 0;
+
+ /* make sure it's a valid mount point */
+ ret = debugfs_valid_mountpoint(debugfs_mountpoint);
+ if (ret)
+ return ret;
+
+ snprintf(umountcmd, sizeof(umountcmd),
+ "/bin/umount %s", debugfs_mountpoint);
+ return system(umountcmd);
+}
+
+int debugfs_write(const char *entry, const char *value)
+{
+ char path[MAX_PATH+1];
+ int ret, count;
+ int fd;
+
+ /* construct the path */
+ snprintf(path, sizeof(path), "%s/%s", debugfs_mountpoint, entry);
+
+ /* verify that it exists */
+ ret = debugfs_valid_entry(path);
+ if (ret)
+ return ret;
+
+ /* get how many chars we're going to write */
+ count = strlen(value);
+
+ /* open the debugfs entry */
+ fd = open(path, O_RDWR);
+ if (fd < 0)
+ return -errno;
+
+ while (count > 0) {
+ /* write it */
+ ret = write(fd, value, count);
+ if (ret <= 0) {
+ if (ret == EAGAIN)
+ continue;
+ close(fd);
+ return -errno;
+ }
+ count -= ret;
+ }
+
+ /* close it */
+ close(fd);
+
+ /* return success */
+ return 0;
+}
+
+/*
+ * read a debugfs entry
+ * returns the number of chars read or a negative errno
+ */
+int debugfs_read(const char *entry, char *buffer, size_t size)
+{
+ char path[MAX_PATH+1];
+ int ret;
+ int fd;
+
+ /* construct the path */
+ snprintf(path, sizeof(path), "%s/%s", debugfs_mountpoint, entry);
+
+ /* verify that it exists */
+ ret = debugfs_valid_entry(path);
+ if (ret)
+ return ret;
+
+ /* open the debugfs entry */
+ fd = open(path, O_RDONLY);
+ if (fd < 0)
+ return -errno;
+
+ do {
+ /* read it */
+ ret = read(fd, buffer, size);
+ if (ret == 0) {
+ close(fd);
+ return EOF;
+ }
+ } while (ret < 0 && errno == EAGAIN);
+
+ /* close it */
+ close(fd);
+
+ /* make *sure* there's a null character at the end */
+ buffer[ret] = '\0';
+
+ /* return the number of chars read */
+ return ret;
+}
diff --git a/tools/perf/util/debugfs.h b/tools/perf/util/debugfs.h
new file mode 100644
index 000000000000..3cd14f9ae784
--- /dev/null
+++ b/tools/perf/util/debugfs.h
@@ -0,0 +1,25 @@
+#ifndef __DEBUGFS_H__
+#define __DEBUGFS_H__
+
+#include <sys/mount.h>
+
+#ifndef MAX_PATH
+# define MAX_PATH 256
+#endif
+
+#ifndef STR
+# define _STR(x) #x
+# define STR(x) _STR(x)
+#endif
+
+extern const char *debugfs_find_mountpoint(void);
+extern int debugfs_valid_mountpoint(const char *debugfs);
+extern int debugfs_valid_entry(const char *path);
+extern int debugfs_mount(const char *mountpoint);
+extern int debugfs_umount(void);
+extern int debugfs_write(const char *entry, const char *value);
+extern int debugfs_read(const char *entry, char *buffer, size_t size);
+extern void debugfs_force_cleanup(void);
+extern int debugfs_make_path(const char *element, char *buffer, int size);
+
+#endif /* __DEBUGFS_H__ */
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 0a443bea68db..1f771ce3a957 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -61,6 +61,20 @@ struct sample_event{
u64 array[];
};
+#define BUILD_ID_SIZE 20
+
+struct build_id_event {
+ struct perf_event_header header;
+ u8 build_id[ALIGN(BUILD_ID_SIZE, sizeof(u64))];
+ char filename[];
+};
+
+struct build_id_list {
+ struct build_id_event event;
+ struct list_head list;
+ const char *dso_name;
+ int len;
+};
typedef union event_union {
struct perf_event_header header;
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 7d26659b806c..ebed4f44ed36 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2,11 +2,15 @@
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
+#include <linux/list.h>
#include "util.h"
#include "header.h"
#include "../perf.h"
#include "trace-event.h"
+#include "symbol.h"
+#include "data_map.h"
+#include "debug.h"
/*
* Create new perf.data header attribute:
@@ -144,9 +148,14 @@ struct perf_file_header {
DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
};
-void perf_header__feat_trace_info(struct perf_header *header)
+void perf_header__set_feat(struct perf_header *self, int feat)
{
- set_bit(HEADER_TRACE_INFO, header->adds_features);
+ set_bit(feat, self->adds_features);
+}
+
+bool perf_header__has_feat(const struct perf_header *self, int feat)
+{
+ return test_bit(feat, self->adds_features);
}
static void do_write(int fd, void *buf, size_t size)
@@ -162,33 +171,75 @@ static void do_write(int fd, void *buf, size_t size)
}
}
-static void perf_header__adds_write(struct perf_header *self, int fd)
+static void write_buildid_table(int fd, struct list_head *id_head)
{
- struct perf_file_section trace_sec;
- u64 cur_offset = lseek(fd, 0, SEEK_CUR);
- unsigned long *feat_mask = self->adds_features;
+ struct build_id_list *iter, *next;
+
+ list_for_each_entry_safe(iter, next, id_head, list) {
+ struct build_id_event *b = &iter->event;
+
+ do_write(fd, b, sizeof(*b));
+ do_write(fd, (void *)iter->dso_name, iter->len);
+ list_del(&iter->list);
+ free(iter);
+ }
+}
+
+static void
+perf_header__adds_write(struct perf_header *self, int fd)
+{
+ LIST_HEAD(id_list);
+ int nr_sections;
+ struct perf_file_section *feat_sec;
+ int sec_size;
+ u64 sec_start;
+ int idx = 0;
+
+ if (fetch_build_id_table(&id_list))
+ perf_header__set_feat(self, HEADER_BUILD_ID);
+
+ nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS);
+ if (!nr_sections)
+ return;
+
+ feat_sec = calloc(sizeof(*feat_sec), nr_sections);
+ if (!feat_sec)
+ die("No memory");
+
+ sec_size = sizeof(*feat_sec) * nr_sections;
+
+ sec_start = self->data_offset + self->data_size;
+ lseek(fd, sec_start + sec_size, SEEK_SET);
+
+ if (perf_header__has_feat(self, HEADER_TRACE_INFO)) {
+ struct perf_file_section *trace_sec;
+
+ trace_sec = &feat_sec[idx++];
- if (test_bit(HEADER_TRACE_INFO, feat_mask)) {
/* Write trace info */
- trace_sec.offset = lseek(fd, sizeof(trace_sec), SEEK_CUR);
+ trace_sec->offset = lseek(fd, 0, SEEK_CUR);
read_tracing_data(fd, attrs, nr_counters);
- trace_sec.size = lseek(fd, 0, SEEK_CUR) - trace_sec.offset;
-
- /* Write trace info headers */
- lseek(fd, cur_offset, SEEK_SET);
- do_write(fd, &trace_sec, sizeof(trace_sec));
-
- /*
- * Update cur_offset. So that other (future)
- * features can set their own infos in this place. But if we are
- * the only feature, at least that seeks to the place the data
- * should begin.
- */
- cur_offset = lseek(fd, trace_sec.offset + trace_sec.size, SEEK_SET);
+ trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset;
}
-};
-void perf_header__write(struct perf_header *self, int fd)
+
+ if (perf_header__has_feat(self, HEADER_BUILD_ID)) {
+ struct perf_file_section *buildid_sec;
+
+ buildid_sec = &feat_sec[idx++];
+
+ /* Write build-ids */
+ buildid_sec->offset = lseek(fd, 0, SEEK_CUR);
+ write_buildid_table(fd, &id_list);
+ buildid_sec->size = lseek(fd, 0, SEEK_CUR) - buildid_sec->offset;
+ }
+
+ lseek(fd, sec_start, SEEK_SET);
+ do_write(fd, feat_sec, sec_size);
+ free(feat_sec);
+}
+
+void perf_header__write(struct perf_header *self, int fd, bool at_exit)
{
struct perf_file_header f_header;
struct perf_file_attr f_attr;
@@ -226,10 +277,11 @@ void perf_header__write(struct perf_header *self, int fd)
if (events)
do_write(fd, events, self->event_size);
- perf_header__adds_write(self, fd);
-
self->data_offset = lseek(fd, 0, SEEK_CUR);
+ if (at_exit)
+ perf_header__adds_write(self, fd);
+
f_header = (struct perf_file_header){
.magic = PERF_MAGIC,
.size = sizeof(f_header),
@@ -274,16 +326,44 @@ static void do_read(int fd, void *buf, size_t size)
static void perf_header__adds_read(struct perf_header *self, int fd)
{
- const unsigned long *feat_mask = self->adds_features;
+ struct perf_file_section *feat_sec;
+ int nr_sections;
+ int sec_size;
+ int idx = 0;
+
+
+ nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS);
+ if (!nr_sections)
+ return;
+
+ feat_sec = calloc(sizeof(*feat_sec), nr_sections);
+ if (!feat_sec)
+ die("No memory");
+
+ sec_size = sizeof(*feat_sec) * nr_sections;
+
+ lseek(fd, self->data_offset + self->data_size, SEEK_SET);
+
+ do_read(fd, feat_sec, sec_size);
- if (test_bit(HEADER_TRACE_INFO, feat_mask)) {
- struct perf_file_section trace_sec;
+ if (perf_header__has_feat(self, HEADER_TRACE_INFO)) {
+ struct perf_file_section *trace_sec;
- do_read(fd, &trace_sec, sizeof(trace_sec));
- lseek(fd, trace_sec.offset, SEEK_SET);
+ trace_sec = &feat_sec[idx++];
+ lseek(fd, trace_sec->offset, SEEK_SET);
trace_report(fd);
- lseek(fd, trace_sec.offset + trace_sec.size, SEEK_SET);
}
+
+ if (perf_header__has_feat(self, HEADER_BUILD_ID)) {
+ struct perf_file_section *buildid_sec;
+
+ buildid_sec = &feat_sec[idx++];
+ lseek(fd, buildid_sec->offset, SEEK_SET);
+ if (perf_header__read_build_ids(fd, buildid_sec->size))
+ pr_debug("failed to read buildids, continuing...\n");
+ }
+
+ free(feat_sec);
};
struct perf_header *perf_header__read(int fd)
@@ -344,14 +424,14 @@ struct perf_header *perf_header__read(int fd)
memcpy(&self->adds_features, &f_header.adds_features, sizeof(f_header.adds_features));
- perf_header__adds_read(self, fd);
-
self->event_offset = f_header.event_types.offset;
self->event_size = f_header.event_types.size;
self->data_offset = f_header.data.offset;
self->data_size = f_header.data.size;
+ perf_header__adds_read(self, fd);
+
lseek(fd, self->data_offset, SEEK_SET);
self->frozen = 1;
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 2ea9dfb1236a..a22d70b07571 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -3,6 +3,7 @@
#include "../../../include/linux/perf_event.h"
#include <sys/types.h>
+#include <stdbool.h>
#include "types.h"
#include <linux/bitmap.h>
@@ -15,6 +16,7 @@ struct perf_header_attr {
};
#define HEADER_TRACE_INFO 1
+#define HEADER_BUILD_ID 2
#define HEADER_FEAT_BITS 256
@@ -31,7 +33,7 @@ struct perf_header {
};
struct perf_header *perf_header__read(int fd);
-void perf_header__write(struct perf_header *self, int fd);
+void perf_header__write(struct perf_header *self, int fd, bool at_exit);
void perf_header__add_attr(struct perf_header *self,
struct perf_header_attr *attr);
@@ -47,7 +49,8 @@ void perf_header_attr__add_id(struct perf_header_attr *self, u64 id);
u64 perf_header__sample_type(struct perf_header *header);
struct perf_event_attr *
perf_header__find_attr(u64 id, struct perf_header *header);
-void perf_header__feat_trace_info(struct perf_header *header);
+void perf_header__set_feat(struct perf_header *self, int feat);
+bool perf_header__has_feat(const struct perf_header *self, int feat);
struct perf_header *perf_header__new(void);
diff --git a/tools/perf/util/include/linux/bitmap.h b/tools/perf/util/include/linux/bitmap.h
index 821c1033bccf..94507639a8c4 100644
--- a/tools/perf/util/include/linux/bitmap.h
+++ b/tools/perf/util/include/linux/bitmap.h
@@ -1,2 +1,3 @@
#include "../../../../include/linux/bitmap.h"
#include "../../../../include/asm-generic/bitops/find.h"
+#include <linux/errno.h>
diff --git a/tools/perf/util/include/linux/ctype.h b/tools/perf/util/include/linux/ctype.h
index bae5783282ef..a53d4ee1e0b7 100644
--- a/tools/perf/util/include/linux/ctype.h
+++ b/tools/perf/util/include/linux/ctype.h
@@ -1 +1 @@
-#include "../../../../include/linux/ctype.h"
+#include "../util.h"
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 33f868420d73..94ca95073c40 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -84,8 +84,18 @@ map__find_symbol(struct map *self, u64 ip, symbol_filter_t filter)
int nr = dso__load(self->dso, self, filter);
if (nr < 0) {
- pr_warning("Failed to open %s, continuing without symbols\n",
- self->dso->long_name);
+ if (self->dso->has_build_id) {
+ char sbuild_id[BUILD_ID_SIZE * 2 + 1];
+
+ build_id__sprintf(self->dso->build_id,
+ sizeof(self->dso->build_id),
+ sbuild_id);
+ pr_warning("%s with build id %s not found",
+ self->dso->long_name, sbuild_id);
+ } else
+ pr_warning("Failed to open %s",
+ self->dso->long_name);
+ pr_warning(", continuing without symbols\n");
return NULL;
} else if (nr == 0) {
const char *name = self->dso->long_name;
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 31baa5a60365..0faf4f2bb5ca 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -7,6 +7,7 @@
#include "string.h"
#include "cache.h"
#include "header.h"
+#include "debugfs.h"
int nr_counters;
@@ -47,6 +48,8 @@ static struct event_symbol event_symbols[] = {
{ CSW(PAGE_FAULTS_MAJ), "major-faults", "" },
{ CSW(CONTEXT_SWITCHES), "context-switches", "cs" },
{ CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" },
+ { CSW(ALIGNMENT_FAULTS), "alignment-faults", "" },
+ { CSW(EMULATION_FAULTS), "emulation-faults", "" },
};
#define __PERF_EVENT_FIELD(config, name) \
@@ -75,6 +78,8 @@ static const char *sw_event_names[] = {
"CPU-migrations",
"minor-faults",
"major-faults",
+ "alignment-faults",
+ "emulation-faults",
};
#define MAX_ALIASES 8
@@ -149,16 +154,6 @@ static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
#define MAX_EVENT_LENGTH 512
-int valid_debugfs_mount(const char *debugfs)
-{
- struct statfs st_fs;
-
- if (statfs(debugfs, &st_fs) < 0)
- return -ENOENT;
- else if (st_fs.f_type != (long) DEBUGFS_MAGIC)
- return -ENOENT;
- return 0;
-}
struct tracepoint_path *tracepoint_id_to_path(u64 config)
{
@@ -171,7 +166,7 @@ struct tracepoint_path *tracepoint_id_to_path(u64 config)
char evt_path[MAXPATHLEN];
char dir_path[MAXPATHLEN];
- if (valid_debugfs_mount(debugfs_path))
+ if (debugfs_valid_mountpoint(debugfs_path))
return NULL;
sys_dir = opendir(debugfs_path);
@@ -510,7 +505,7 @@ static enum event_result parse_tracepoint_event(const char **strp,
char sys_name[MAX_EVENT_LENGTH];
unsigned int sys_length, evt_length;
- if (valid_debugfs_mount(debugfs_path))
+ if (debugfs_valid_mountpoint(debugfs_path))
return 0;
evt_name = strchr(*strp, ':');
@@ -788,7 +783,7 @@ static void print_tracepoint_events(void)
char evt_path[MAXPATHLEN];
char dir_path[MAXPATHLEN];
- if (valid_debugfs_mount(debugfs_path))
+ if (debugfs_valid_mountpoint(debugfs_path))
return;
sys_dir = opendir(debugfs_path);
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index e7c7cdb851c2..9c286db62003 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -121,7 +121,8 @@ struct dso *dso__new(const char *name)
self->find_symbol = dso__find_symbol;
self->slen_calculated = 0;
self->origin = DSO__ORIG_NOT_FOUND;
- self->loaded = false;
+ self->loaded = 0;
+ self->has_build_id = 0;
}
return self;
@@ -148,6 +149,12 @@ void dso__delete(struct dso *self)
free(self);
}
+void dso__set_build_id(struct dso *self, void *build_id)
+{
+ memcpy(self->build_id, build_id, sizeof(self->build_id));
+ self->has_build_id = 1;
+}
+
static void dso__insert_symbol(struct dso *self, struct symbol *sym)
{
struct rb_node **p = &self->syms.rb_node;
@@ -190,11 +197,30 @@ struct symbol *dso__find_symbol(struct dso *self, u64 ip)
return NULL;
}
-size_t dso__fprintf(struct dso *self, FILE *fp)
+int build_id__sprintf(u8 *self, int len, char *bf)
{
- size_t ret = fprintf(fp, "dso: %s\n", self->short_name);
+ char *bid = bf;
+ u8 *raw = self;
+ int i;
+
+ for (i = 0; i < len; ++i) {
+ sprintf(bid, "%02x", *raw);
+ ++raw;
+ bid += 2;
+ }
+
+ return raw - self;
+}
+size_t dso__fprintf(struct dso *self, FILE *fp)
+{
+ char sbuild_id[BUILD_ID_SIZE * 2 + 1];
struct rb_node *nd;
+ size_t ret;
+
+ build_id__sprintf(self->build_id, sizeof(self->build_id), sbuild_id);
+ ret = fprintf(fp, "dso: %s (%s)\n", self->short_name, sbuild_id);
+
for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) {
struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
ret += symbol__fprintf(pos, fp);
@@ -825,7 +851,39 @@ out_close:
return err;
}
-#define BUILD_ID_SIZE 20
+bool fetch_build_id_table(struct list_head *head)
+{
+ bool have_buildid = false;
+ struct dso *pos;
+
+ list_for_each_entry(pos, &dsos, node) {
+ struct build_id_list *new;
+ struct build_id_event b;
+ size_t len;
+
+ if (filename__read_build_id(pos->long_name,
+ &b.build_id,
+ sizeof(b.build_id)) < 0)
+ continue;
+ have_buildid = true;
+ memset(&b.header, 0, sizeof(b.header));
+ len = strlen(pos->long_name) + 1;
+ len = ALIGN(len, 64);
+ b.header.size = sizeof(b) + len;
+
+ new = malloc(sizeof(*new));
+ if (!new)
+ die("No memory\n");
+
+ memcpy(&new->event, &b, sizeof(b));
+ new->dso_name = pos->long_name;
+ new->len = len;
+
+ list_add_tail(&new->list, head);
+ }
+
+ return have_buildid;
+}
int filename__read_build_id(const char *filename, void *bf, size_t size)
{
@@ -845,7 +903,7 @@ int filename__read_build_id(const char *filename, void *bf, size_t size)
elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
if (elf == NULL) {
- pr_err("%s: cannot read %s ELF file.\n", __func__, filename);
+ pr_debug2("%s: cannot read %s ELF file.\n", __func__, filename);
goto out_close;
}
@@ -874,9 +932,9 @@ out:
static char *dso__read_build_id(struct dso *self)
{
- int i, len;
- char *build_id = NULL, *bid;
- unsigned char rawbf[BUILD_ID_SIZE], *raw;
+ int len;
+ char *build_id = NULL;
+ unsigned char rawbf[BUILD_ID_SIZE];
len = filename__read_build_id(self->long_name, rawbf, sizeof(rawbf));
if (len < 0)
@@ -885,15 +943,8 @@ static char *dso__read_build_id(struct dso *self)
build_id = malloc(len * 2 + 1);
if (build_id == NULL)
goto out;
- bid = build_id;
- raw = rawbf;
- for (i = 0; i < len; ++i) {
- sprintf(bid, "%02x", *raw);
- ++raw;
- bid += 2;
- }
- pr_debug2("%s(%s): %s\n", __func__, self->long_name, build_id);
+ build_id__sprintf(rawbf, len, build_id);
out:
return build_id;
}
@@ -922,7 +973,7 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
int ret = -1;
int fd;
- self->loaded = true;
+ self->loaded = 1;
if (!name)
return -1;
@@ -940,6 +991,8 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
more:
do {
+ int berr = 0;
+
self->origin++;
switch (self->origin) {
case DSO__ORIG_FEDORA:
@@ -956,8 +1009,7 @@ more:
snprintf(name, size,
"/usr/lib/debug/.build-id/%.2s/%s.debug",
build_id, build_id + 2);
- free(build_id);
- break;
+ goto compare_build_id;
}
self->origin++;
/* Fall thru */
@@ -969,6 +1021,22 @@ more:
goto out;
}
+ if (self->has_build_id) {
+ bool match;
+ build_id = malloc(BUILD_ID_SIZE);
+ if (build_id == NULL)
+ goto more;
+ berr = filename__read_build_id(name, build_id,
+ BUILD_ID_SIZE);
+compare_build_id:
+ match = berr > 0 && memcmp(build_id, self->build_id,
+ sizeof(self->build_id)) == 0;
+ free(build_id);
+ build_id = NULL;
+ if (!match)
+ goto more;
+ }
+
fd = open(name, O_RDONLY);
} while (fd < 0);
@@ -1034,7 +1102,7 @@ static int dso__load_module_sym(struct dso *self, struct map *map,
{
int err = 0, fd = open(self->long_name, O_RDONLY);
- self->loaded = true;
+ self->loaded = 1;
if (fd < 0) {
pr_err("%s: cannot open %s\n", __func__, self->long_name);
@@ -1225,7 +1293,7 @@ static int dso__load_vmlinux(struct dso *self, struct map *map,
{
int err, fd = open(vmlinux, O_RDONLY);
- self->loaded = true;
+ self->loaded = 1;
if (fd < 0)
return -1;
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index e0d4a583f8dd..0a34a5493f1b 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -60,10 +60,12 @@ struct dso {
struct list_head node;
struct rb_root syms;
struct symbol *(*find_symbol)(struct dso *, u64 ip);
- unsigned char adjust_symbols;
- unsigned char slen_calculated;
- bool loaded;
+ u8 adjust_symbols:1;
+ u8 slen_calculated:1;
+ u8 loaded:1;
+ u8 has_build_id:1;
unsigned char origin;
+ u8 build_id[BUILD_ID_SIZE];
const char *short_name;
char *long_name;
char name[0];
@@ -81,8 +83,11 @@ void dsos__fprintf(FILE *fp);
size_t dso__fprintf(struct dso *self, FILE *fp);
char dso__symtab_origin(const struct dso *self);
+void dso__set_build_id(struct dso *self, void *build_id);
int filename__read_build_id(const char *filename, void *bf, size_t size);
+bool fetch_build_id_table(struct list_head *head);
+int build_id__sprintf(u8 *self, int len, char *bf);
int load_kernel(symbol_filter_t filter);
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 9de2329dd44d..7bd5bdaeb235 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -306,6 +306,7 @@ static inline int has_extension(const char *filename, const char *ext)
#undef isascii
#undef isspace
#undef isdigit
+#undef isxdigit
#undef isalpha
#undef isprint
#undef isalnum
@@ -323,6 +324,8 @@ extern unsigned char sane_ctype[256];
#define isascii(x) (((x) & ~0x7f) == 0)
#define isspace(x) sane_istest(x,GIT_SPACE)
#define isdigit(x) sane_istest(x,GIT_DIGIT)
+#define isxdigit(x) \
+ (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
#define isalpha(x) sane_istest(x,GIT_ALPHA)
#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
#define isprint(x) sane_istest(x,GIT_PRINT)
generated by cgit v1.2.3 (git 2.39.0) at 2025-09-03 08:01:34 +0300