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Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  ftrace: Fix hash record accounting bug
  perf: Fix parsing of __print_flags() in TP_printk()
  jump_label: jump_label_inc may return before the code is patched
  ftrace: Remove force undef config value left for testing
  tracing: Restore system filter behavior
  tracing: fix event_subsystem ref counting
This commit is contained in:
Linus Torvalds 2011-12-06 11:54:33 -08:00
commit 091c0f86ba
6 changed files with 15 additions and 5 deletions
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2
include/linux/ftrace_event.h
View File

@ -172,6 +172,7 @@ enum {
TRACE_EVENT_FL_FILTERED_BIT,
TRACE_EVENT_FL_RECORDED_CMD_BIT,
TRACE_EVENT_FL_CAP_ANY_BIT,
TRACE_EVENT_FL_NO_SET_FILTER_BIT,
};
enum {
@ -179,6 +180,7 @@ enum {
TRACE_EVENT_FL_FILTERED = (1 << TRACE_EVENT_FL_FILTERED_BIT),
TRACE_EVENT_FL_RECORDED_CMD = (1 << TRACE_EVENT_FL_RECORDED_CMD_BIT),
TRACE_EVENT_FL_CAP_ANY = (1 << TRACE_EVENT_FL_CAP_ANY_BIT),
TRACE_EVENT_FL_NO_SET_FILTER = (1 << TRACE_EVENT_FL_NO_SET_FILTER_BIT),
};
struct ftrace_event_call {

3
kernel/jump_label.c
View File

@ -66,8 +66,9 @@ void jump_label_inc(struct jump_label_key *key)
return;
jump_label_lock();
if (atomic_add_return(1, &key->enabled) == 1)
if (atomic_read(&key->enabled) == 0)
jump_label_update(key, JUMP_LABEL_ENABLE);
atomic_inc(&key->enabled);
jump_label_unlock();
}

5
kernel/trace/ftrace.c
View File

@ -152,7 +152,6 @@ void clear_ftrace_function(void)
ftrace_pid_function = ftrace_stub;
}
#undef CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST
#ifndef CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST
/*
* For those archs that do not test ftrace_trace_stop in their
@ -1212,7 +1211,9 @@ ftrace_hash_move(struct ftrace_ops *ops, int enable,
if (!src->count) {
free_ftrace_hash_rcu(*dst);
rcu_assign_pointer(*dst, EMPTY_HASH);
return 0;
/* still need to update the function records */
ret = 0;
goto out;
}
/*

1
kernel/trace/trace_events.c
View File

@ -1078,7 +1078,6 @@ event_subsystem_dir(const char *name, struct dentry *d_events)
/* First see if we did not already create this dir */
list_for_each_entry(system, &event_subsystems, list) {
if (strcmp(system->name, name) == 0) {
__get_system(system);
system->nr_events++;
return system->entry;
}

7
kernel/trace/trace_events_filter.c
View File

@ -1649,7 +1649,9 @@ static int replace_system_preds(struct event_subsystem *system,
*/
err = replace_preds(call, NULL, ps, filter_string, true);
if (err)
goto fail;
call->flags |= TRACE_EVENT_FL_NO_SET_FILTER;
else
call->flags &= ~TRACE_EVENT_FL_NO_SET_FILTER;
}
list_for_each_entry(call, &ftrace_events, list) {
@ -1658,6 +1660,9 @@ static int replace_system_preds(struct event_subsystem *system,
if (strcmp(call->class->system, system->name) != 0)
continue;
if (call->flags & TRACE_EVENT_FL_NO_SET_FILTER)
continue;
filter_item = kzalloc(sizeof(*filter_item), GFP_KERNEL);
if (!filter_item)
goto fail_mem;

2
tools/perf/util/trace-event-parse.c
View File

@ -1537,6 +1537,8 @@ process_flags(struct event *event, struct print_arg *arg, char **tok)
field = malloc_or_die(sizeof(*field));
type = process_arg(event, field, &token);
while (type == EVENT_OP)
type = process_op(event, field, &token);
if (test_type_token(type, token, EVENT_DELIM, ","))
goto out_free;