static int dump_trace = 0;
#define dprintf(x...) do { if (dump_trace) printf(x); } while (0)
+#define cdprintf(x...) do { if (dump_trace) color_fprintf(stdout, color, x); } while (0)
static int verbose;
+#define eprintf(x...) do { if (verbose) fprintf(stderr, x); } while (0)
+
static int full_paths;
static unsigned long page_size;
static unsigned long mmap_window = 32;
+static char *parent_pattern = "^sys_|^do_page_fault";
+static regex_t parent_regex;
+
struct ip_event {
struct perf_event_header header;
__u64 ip;
__u32 pid, tid;
- __u64 period;
+ unsigned char __more_data[];
};
struct mmap_event {
__u64 sample_period;
};
+struct lost_event {
+ struct perf_event_header header;
+ __u64 id;
+ __u64 lost;
+};
+
typedef union event_union {
struct perf_event_header header;
struct ip_event ip;
struct comm_event comm;
struct fork_event fork;
struct period_event period;
+ struct lost_event lost;
} event_t;
static LIST_HEAD(dsos);
nr = dso__load(dso, NULL, verbose);
if (nr < 0) {
- if (verbose)
- fprintf(stderr, "Failed to open: %s\n", name);
+ eprintf("Failed to open: %s\n", name);
goto out_delete_dso;
}
- if (!nr && verbose) {
- fprintf(stderr,
- "No symbols found in: %s, maybe install a debug package?\n",
- name);
- }
+ if (!nr)
+ eprintf("No symbols found in: %s, maybe install a debug package?\n", name);
dsos__add(dso);
struct map *map;
struct dso *dso;
struct symbol *sym;
+ struct symbol *parent;
__u64 ip;
char level;
size_t (*print)(FILE *fp, struct hist_entry *);
};
+static int64_t cmp_null(void *l, void *r)
+{
+ if (!l && !r)
+ return 0;
+ else if (!l)
+ return -1;
+ else
+ return 1;
+}
+
/* --sort pid */
static int64_t
char *comm_l = left->thread->comm;
char *comm_r = right->thread->comm;
- if (!comm_l || !comm_r) {
- if (!comm_l && !comm_r)
- return 0;
- else if (!comm_l)
- return -1;
- else
- return 1;
- }
+ if (!comm_l || !comm_r)
+ return cmp_null(comm_l, comm_r);
return strcmp(comm_l, comm_r);
}
struct dso *dso_l = left->dso;
struct dso *dso_r = right->dso;
- if (!dso_l || !dso_r) {
- if (!dso_l && !dso_r)
- return 0;
- else if (!dso_l)
- return -1;
- else
- return 1;
- }
+ if (!dso_l || !dso_r)
+ return cmp_null(dso_l, dso_r);
return strcmp(dso_l->name, dso_r->name);
}
.print = sort__sym_print,
};
+/* --sort parent */
+
+static int64_t
+sort__parent_cmp(struct hist_entry *left, struct hist_entry *right)
+{
+ struct symbol *sym_l = left->parent;
+ struct symbol *sym_r = right->parent;
+
+ if (!sym_l || !sym_r)
+ return cmp_null(sym_l, sym_r);
+
+ return strcmp(sym_l->name, sym_r->name);
+}
+
+static size_t
+sort__parent_print(FILE *fp, struct hist_entry *self)
+{
+ size_t ret = 0;
+
+ ret += fprintf(fp, "%-20s", self->parent ? self->parent->name : "[other]");
+
+ return ret;
+}
+
+static struct sort_entry sort_parent = {
+ .header = "Parent symbol ",
+ .cmp = sort__parent_cmp,
+ .print = sort__parent_print,
+};
+
static int sort__need_collapse = 0;
+static int sort__has_parent = 0;
struct sort_dimension {
char *name;
{ .name = "comm", .entry = &sort_comm, },
{ .name = "dso", .entry = &sort_dso, },
{ .name = "symbol", .entry = &sort_sym, },
+ { .name = "parent", .entry = &sort_parent, },
};
static LIST_HEAD(hist_entry__sort_list);
if (sd->entry->collapse)
sort__need_collapse = 1;
+ if (sd->entry == &sort_parent) {
+ int ret = regcomp(&parent_regex, parent_pattern, REG_EXTENDED);
+ if (ret) {
+ char err[BUFSIZ];
+
+ regerror(ret, &parent_regex, err, sizeof(err));
+ fprintf(stderr, "Invalid regex: %s\n%s",
+ parent_pattern, err);
+ exit(-1);
+ }
+ sort__has_parent = 1;
+ }
+
list_add_tail(&sd->entry->list, &hist_entry__sort_list);
sd->taken = 1;
return ret;
}
+/*
+ *
+ */
+
+static struct symbol *
+resolve_symbol(struct thread *thread, struct map **mapp,
+ struct dso **dsop, __u64 *ipp)
+{
+ struct dso *dso = dsop ? *dsop : NULL;
+ struct map *map = mapp ? *mapp : NULL;
+ uint64_t ip = *ipp;
+
+ if (!thread)
+ return NULL;
+
+ if (dso)
+ goto got_dso;
+
+ if (map)
+ goto got_map;
+
+ map = thread__find_map(thread, ip);
+ if (map != NULL) {
+ if (mapp)
+ *mapp = map;
+got_map:
+ ip = map->map_ip(map, ip);
+ *ipp = ip;
+
+ dso = map->dso;
+ } else {
+ /*
+ * If this is outside of all known maps,
+ * and is a negative address, try to look it
+ * up in the kernel dso, as it might be a
+ * vsyscall (which executes in user-mode):
+ */
+ if ((long long)ip < 0)
+ dso = kernel_dso;
+ }
+ dprintf(" ...... dso: %s\n", dso ? dso->name : "<not found>");
+
+ if (dsop)
+ *dsop = dso;
+
+ if (!dso)
+ return NULL;
+got_dso:
+ return dso->find_symbol(dso, ip);
+}
+
+static struct symbol *call__match(struct symbol *sym)
+{
+ if (!sym)
+ return NULL;
+
+ if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
+ return sym;
+
+ return NULL;
+}
+
/*
* collect histogram counts
*/
static int
hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
- struct symbol *sym, __u64 ip, char level, __u64 count)
+ struct symbol *sym, __u64 ip, struct perf_callchain_entry *chain,
+ char level, __u64 count)
{
struct rb_node **p = &hist.rb_node;
struct rb_node *parent = NULL;
};
int cmp;
+ if (sort__has_parent && chain) {
+ int i, nr = chain->hv;
+ struct symbol *sym;
+ struct dso *dso;
+ __u64 ip;
+
+ for (i = 0; i < chain->kernel; i++) {
+ ip = chain->ip[nr + i];
+ dso = kernel_dso;
+ sym = resolve_symbol(thread, NULL, &dso, &ip);
+ entry.parent = call__match(sym);
+ if (entry.parent)
+ goto got_parent;
+ }
+ nr += i;
+
+ for (i = 0; i < chain->user; i++) {
+ ip = chain->ip[nr + i];
+ sym = resolve_symbol(thread, NULL, NULL, &ip);
+ entry.parent = call__match(sym);
+ if (entry.parent)
+ goto got_parent;
+ }
+ nr += i;
+ }
+got_parent:
+
while (*p != NULL) {
parent = *p;
he = rb_entry(parent, struct hist_entry, rb_node);
total_mmap = 0,
total_comm = 0,
total_fork = 0,
- total_unknown = 0;
+ total_unknown = 0,
+ total_lost = 0;
+
+static int validate_chain(struct perf_callchain_entry *chain, event_t *event)
+{
+ unsigned int chain_size;
+
+ if (chain->nr > MAX_STACK_DEPTH)
+ return -1;
+ if (chain->hv > MAX_STACK_DEPTH)
+ return -1;
+ if (chain->kernel > MAX_STACK_DEPTH)
+ return -1;
+ if (chain->user > MAX_STACK_DEPTH)
+ return -1;
+ if (chain->hv + chain->kernel + chain->user != chain->nr)
+ return -1;
+
+ chain_size = event->header.size;
+ chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
+
+ if (chain->nr*sizeof(__u64) > chain_size)
+ return -1;
+
+ return 0;
+}
static int
process_overflow_event(event_t *event, unsigned long offset, unsigned long head)
__u64 ip = event->ip.ip;
__u64 period = 1;
struct map *map = NULL;
+ void *more_data = event->ip.__more_data;
+ struct perf_callchain_entry *chain = NULL;
- if (event->header.type & PERF_SAMPLE_PERIOD)
- period = event->ip.period;
+ if (event->header.type & PERF_SAMPLE_PERIOD) {
+ period = *(__u64 *)more_data;
+ more_data += sizeof(__u64);
+ }
dprintf("%p [%p]: PERF_EVENT (IP, %d): %d: %p period: %Ld\n",
(void *)(offset + head),
(void *)(long)ip,
(long long)period);
+ if (event->header.type & PERF_SAMPLE_CALLCHAIN) {
+ int i;
+
+ chain = (void *)more_data;
+
+ dprintf("... chain: u:%d, k:%d, nr:%d\n",
+ chain->user,
+ chain->kernel,
+ chain->nr);
+
+ if (validate_chain(chain, event) < 0) {
+ eprintf("call-chain problem with event, skipping it.\n");
+ return 0;
+ }
+
+ if (dump_trace) {
+ for (i = 0; i < chain->nr; i++)
+ dprintf("..... %2d: %016Lx\n", i, chain->ip[i]);
+ }
+ }
+
dprintf(" ... thread: %s:%d\n", thread->comm, thread->pid);
if (thread == NULL) {
- fprintf(stderr, "problem processing %d event, skipping it.\n",
+ eprintf("problem processing %d event, skipping it.\n",
event->header.type);
return -1;
}
show = SHOW_USER;
level = '.';
- map = thread__find_map(thread, ip);
- if (map != NULL) {
- ip = map->map_ip(map, ip);
- dso = map->dso;
- } else {
- /*
- * If this is outside of all known maps,
- * and is a negative address, try to look it
- * up in the kernel dso, as it might be a
- * vsyscall (which executes in user-mode):
- */
- if ((long long)ip < 0)
- dso = kernel_dso;
- }
- dprintf(" ...... dso: %s\n", dso ? dso->name : "<not found>");
-
} else {
show = SHOW_HV;
level = 'H';
}
if (show & show_mask) {
- struct symbol *sym = NULL;
-
- if (dso)
- sym = dso->find_symbol(dso, ip);
+ struct symbol *sym = resolve_symbol(thread, &map, &dso, &ip);
- if (hist_entry__add(thread, map, dso, sym, ip, level, period)) {
- fprintf(stderr,
- "problem incrementing symbol count, skipping event\n");
+ if (hist_entry__add(thread, map, dso, sym, ip, chain, level, period)) {
+ eprintf("problem incrementing symbol count, skipping event\n");
return -1;
}
}
return 0;
}
+static int
+process_lost_event(event_t *event, unsigned long offset, unsigned long head)
+{
+ dprintf("%p [%p]: PERF_EVENT_LOST: id:%Ld: lost:%Ld\n",
+ (void *)(offset + head),
+ (void *)(long)(event->header.size),
+ event->lost.id,
+ event->lost.lost);
+
+ total_lost += event->lost.lost;
+
+ return 0;
+}
+
+static void trace_event(event_t *event)
+{
+ unsigned char *raw_event = (void *)event;
+ char *color = PERF_COLOR_BLUE;
+ int i, j;
+
+ if (!dump_trace)
+ return;
+
+ dprintf(".");
+ cdprintf("\n. ... raw event: size %d bytes\n", event->header.size);
+
+ for (i = 0; i < event->header.size; i++) {
+ if ((i & 15) == 0) {
+ dprintf(".");
+ cdprintf(" %04x: ", i);
+ }
+
+ cdprintf(" %02x", raw_event[i]);
+
+ if (((i & 15) == 15) || i == event->header.size-1) {
+ cdprintf(" ");
+ for (j = 0; j < 15-(i & 15); j++)
+ cdprintf(" ");
+ for (j = 0; j < (i & 15); j++) {
+ if (isprint(raw_event[i-15+j]))
+ cdprintf("%c", raw_event[i-15+j]);
+ else
+ cdprintf(".");
+ }
+ cdprintf("\n");
+ }
+ }
+ dprintf(".\n");
+}
+
static int
process_event(event_t *event, unsigned long offset, unsigned long head)
{
+ trace_event(event);
+
if (event->header.misc & PERF_EVENT_MISC_OVERFLOW)
return process_overflow_event(event, offset, head);
case PERF_EVENT_PERIOD:
return process_period_event(event, offset, head);
+
+ case PERF_EVENT_LOST:
+ return process_lost_event(event, offset, head);
+
/*
* We dont process them right now but they are fine:
*/
size = event->header.size;
- dprintf("%p [%p]: event: %d\n",
+ dprintf("\n%p [%p]: event: %d\n",
(void *)(offset + head),
(void *)(long)event->header.size,
event->header.type);
dprintf(" mmap events: %10ld\n", total_mmap);
dprintf(" comm events: %10ld\n", total_comm);
dprintf(" fork events: %10ld\n", total_fork);
+ dprintf(" lost events: %10ld\n", total_lost);
dprintf(" unknown events: %10ld\n", total_unknown);
if (dump_trace)
"dump raw trace in ASCII"),
OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"),
OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
- "sort by key(s): pid, comm, dso, symbol. Default: pid,symbol"),
+ "sort by key(s): pid, comm, dso, symbol, parent"),
OPT_BOOLEAN('P', "full-paths", &full_paths,
"Don't shorten the pathnames taking into account the cwd"),
+ OPT_STRING('p', "parent", &parent_pattern, "regex",
+ "regex filter to identify parent, see: '--sort parent'"),
OPT_END()
};
projects / linux-block.git / blobdiff