#include <stdlib.h>
-static char const *input_old = "perf.data.old",
- *input_new = "perf.data";
-static int force;
-static bool show_percent;
-
-struct symbol_conf symbol_conf;
-
-static int perf_session__add_hist_entry(struct perf_session *self,
- struct addr_location *al, u64 count)
+static char const *input_old = "perf.data.old",
+ *input_new = "perf.data";
+static char diff__default_sort_order[] = "dso,symbol";
+static bool force;
+static bool show_displacement;
+
+static int hists__add_entry(struct hists *self,
+ struct addr_location *al, u64 period)
{
- bool hit;
- struct hist_entry *he = __perf_session__add_hist_entry(self, al, NULL,
- count, &hit);
- if (he == NULL)
- return -ENOMEM;
-
- if (hit)
- he->count += count;
-
- return 0;
+ if (__hists__add_entry(self, al, NULL, period) != NULL)
+ return 0;
+ return -ENOMEM;
}
static int diff__process_sample_event(event_t *event, struct perf_session *session)
struct addr_location al;
struct sample_data data = { .period = 1, };
- dump_printf("(IP, %d): %d: %p\n", event->header.misc,
- event->ip.pid, (void *)(long)event->ip.ip);
+ dump_printf("(IP, %d): %d: %#Lx\n", event->header.misc,
+ event->ip.pid, event->ip.ip);
if (event__preprocess_sample(event, session, &al, NULL) < 0) {
pr_warning("problem processing %d event, skipping it.\n",
return -1;
}
+ if (al.filtered || al.sym == NULL)
+ return 0;
+
event__parse_sample(event, session->sample_type, &data);
- if (al.sym && perf_session__add_hist_entry(session, &al, data.period)) {
- pr_warning("problem incrementing symbol count, skipping event\n");
+ if (hists__add_entry(&session->hists, &al, data.period)) {
+ pr_warning("problem incrementing symbol period, skipping event\n");
return -1;
}
- session->events_stats.total += data.period;
+ session->hists.stats.total_period += data.period;
return 0;
}
static struct perf_event_ops event_ops = {
- .process_sample_event = diff__process_sample_event,
- .process_mmap_event = event__process_mmap,
- .process_comm_event = event__process_comm,
- .process_exit_event = event__process_task,
- .process_fork_event = event__process_task,
- .process_lost_event = event__process_lost,
+ .sample = diff__process_sample_event,
+ .mmap = event__process_mmap,
+ .comm = event__process_comm,
+ .exit = event__process_task,
+ .fork = event__process_task,
+ .lost = event__process_lost,
};
static void perf_session__insert_hist_entry_by_name(struct rb_root *root,
struct hist_entry *iter;
while (*p != NULL) {
- int cmp;
parent = *p;
iter = rb_entry(parent, struct hist_entry, rb_node);
-
- cmp = strcmp(he->map->dso->name, iter->map->dso->name);
- if (cmp > 0)
+ if (hist_entry__cmp(he, iter) < 0)
p = &(*p)->rb_left;
- else if (cmp < 0)
+ else
p = &(*p)->rb_right;
- else {
- cmp = strcmp(he->sym->name, iter->sym->name);
- if (cmp > 0)
- p = &(*p)->rb_left;
- else
- p = &(*p)->rb_right;
- }
}
rb_link_node(&he->rb_node, parent, p);
rb_insert_color(&he->rb_node, root);
}
-static void perf_session__resort_by_name(struct perf_session *self)
+static void hists__resort_entries(struct hists *self)
{
unsigned long position = 1;
struct rb_root tmp = RB_ROOT;
- struct rb_node *next = rb_first(&self->hists);
+ struct rb_node *next = rb_first(&self->entries);
while (next != NULL) {
struct hist_entry *n = rb_entry(next, struct hist_entry, rb_node);
next = rb_next(&n->rb_node);
- rb_erase(&n->rb_node, &self->hists);
+ rb_erase(&n->rb_node, &self->entries);
n->position = position++;
perf_session__insert_hist_entry_by_name(&tmp, n);
}
- self->hists = tmp;
+ self->entries = tmp;
}
-static struct hist_entry *
-perf_session__find_hist_entry_by_name(struct perf_session *self,
- struct hist_entry *he)
+static void hists__set_positions(struct hists *self)
{
- struct rb_node *n = self->hists.rb_node;
+ hists__output_resort(self);
+ hists__resort_entries(self);
+}
+
+static struct hist_entry *hists__find_entry(struct hists *self,
+ struct hist_entry *he)
+{
+ struct rb_node *n = self->entries.rb_node;
while (n) {
struct hist_entry *iter = rb_entry(n, struct hist_entry, rb_node);
- int cmp = strcmp(he->map->dso->name, iter->map->dso->name);
+ int64_t cmp = hist_entry__cmp(he, iter);
- if (cmp > 0)
+ if (cmp < 0)
n = n->rb_left;
- else if (cmp < 0)
+ else if (cmp > 0)
n = n->rb_right;
- else {
- cmp = strcmp(he->sym->name, iter->sym->name);
- if (cmp > 0)
- n = n->rb_left;
- else if (cmp < 0)
- n = n->rb_right;
- else
- return iter;
- }
+ else
+ return iter;
}
return NULL;
}
-static void perf_session__match_hists(struct perf_session *old_session,
- struct perf_session *new_session)
+static void hists__match(struct hists *older, struct hists *newer)
{
struct rb_node *nd;
- perf_session__resort_by_name(old_session);
-
- for (nd = rb_first(&new_session->hists); nd; nd = rb_next(nd)) {
+ for (nd = rb_first(&newer->entries); nd; nd = rb_next(nd)) {
struct hist_entry *pos = rb_entry(nd, struct hist_entry, rb_node);
- pos->pair = perf_session__find_hist_entry_by_name(old_session, pos);
- }
-}
-
-static size_t hist_entry__fprintf_matched(struct hist_entry *self,
- unsigned long pos,
- struct perf_session *session,
- struct perf_session *pair_session,
- FILE *fp)
-{
- u64 old_count = 0;
- char displacement[16];
- size_t printed;
-
- if (self->pair != NULL) {
- long pdiff = (long)self->pair->position - (long)pos;
- old_count = self->pair->count;
- if (pdiff == 0)
- goto blank;
- snprintf(displacement, sizeof(displacement), "%+4ld", pdiff);
- } else {
-blank: memset(displacement, ' ', sizeof(displacement));
- }
-
- printed = fprintf(fp, "%4lu %5.5s ", pos, displacement);
-
- if (show_percent) {
- double old_percent = (old_count * 100) / pair_session->events_stats.total,
- new_percent = (self->count * 100) / session->events_stats.total;
- double diff = old_percent - new_percent;
-
- if (verbose)
- printed += fprintf(fp, " %3.2f%% %3.2f%%", old_percent, new_percent);
-
- if ((u64)diff != 0)
- printed += fprintf(fp, " %+4.2F%%", diff);
- else
- printed += fprintf(fp, " ");
- } else {
- if (verbose)
- printed += fprintf(fp, " %9Lu %9Lu", old_count, self->count);
- printed += fprintf(fp, " %+9Ld", (s64)self->count - (s64)old_count);
+ pos->pair = hists__find_entry(older, pos);
}
-
- return printed + fprintf(fp, " %25.25s %s\n",
- self->map->dso->name, self->sym->name);
-}
-
-static size_t perf_session__fprintf_matched_hists(struct perf_session *self,
- struct perf_session *pair,
- FILE *fp)
-{
- struct rb_node *nd;
- size_t printed = 0;
- unsigned long pos = 1;
-
- for (nd = rb_first(&self->hists); nd; nd = rb_next(nd)) {
- struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
- printed += hist_entry__fprintf_matched(he, pos++, self, pair, fp);
- }
-
- return printed;
}
static int __cmd_diff(void)
int ret, i;
struct perf_session *session[2];
- session[0] = perf_session__new(input_old, O_RDONLY, force, &symbol_conf);
- session[1] = perf_session__new(input_new, O_RDONLY, force, &symbol_conf);
+ session[0] = perf_session__new(input_old, O_RDONLY, force, false);
+ session[1] = perf_session__new(input_new, O_RDONLY, force, false);
if (session[0] == NULL || session[1] == NULL)
return -ENOMEM;
ret = perf_session__process_events(session[i], &event_ops);
if (ret)
goto out_delete;
- perf_session__output_resort(session[i], session[i]->events_stats.total);
}
- perf_session__match_hists(session[0], session[1]);
- perf_session__fprintf_matched_hists(session[1], session[0], stdout);
+ hists__output_resort(&session[1]->hists);
+ if (show_displacement)
+ hists__set_positions(&session[0]->hists);
+
+ hists__match(&session[0]->hists, &session[1]->hists);
+ hists__fprintf(&session[1]->hists, &session[0]->hists,
+ show_displacement, stdout);
out_delete:
for (i = 0; i < 2; ++i)
perf_session__delete(session[i]);
return ret;
}
-static const char *const diff_usage[] = {
+static const char * const diff_usage[] = {
"perf diff [<options>] [old_file] [new_file]",
+ NULL,
};
static const struct option options[] = {
- OPT_BOOLEAN('v', "verbose", &verbose,
+ OPT_INCR('v', "verbose", &verbose,
"be more verbose (show symbol address, etc)"),
+ OPT_BOOLEAN('m', "displacement", &show_displacement,
+ "Show position displacement relative to baseline"),
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
"load module symbols - WARNING: use only with -k and LIVE kernel"),
- OPT_BOOLEAN('p', "percentages", &show_percent,
- "Don't shorten the pathnames taking into account the cwd"),
- OPT_BOOLEAN('P', "full-paths", &event_ops.full_paths,
+ OPT_BOOLEAN('P', "full-paths", &symbol_conf.full_paths,
"Don't shorten the pathnames taking into account the cwd"),
+ OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
+ "only consider symbols in these dsos"),
+ OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
+ "only consider symbols in these comms"),
+ OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
+ "only consider these symbols"),
+ OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
+ "sort by key(s): pid, comm, dso, symbol, parent"),
+ OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
+ "separator for columns, no spaces will be added between "
+ "columns '.' is reserved."),
OPT_END()
};
int cmd_diff(int argc, const char **argv, const char *prefix __used)
{
- if (symbol__init(&symbol_conf) < 0)
- return -1;
-
- setup_sorting(diff_usage, options);
-
+ sort_order = diff__default_sort_order;
argc = parse_options(argc, argv, options, diff_usage, 0);
if (argc) {
if (argc > 2)
input_new = argv[1];
} else
input_new = argv[0];
+ } else if (symbol_conf.default_guest_vmlinux_name ||
+ symbol_conf.default_guest_kallsyms) {
+ input_old = "perf.data.host";
+ input_new = "perf.data.guest";
}
+ symbol_conf.exclude_other = false;
+ if (symbol__init() < 0)
+ return -1;
+
+ setup_sorting(diff_usage, options);
setup_pager();
+
+ sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", NULL);
+ sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", NULL);
+ sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", NULL);
+
return __cmd_diff();
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff