Masami Hiramatsu a5b85bd155 tracing: Don't succeed if event_enable_func did not register anything ... Return 0 instead of the number of activated ftrace function probes if event_enable_func succeeded and return an error code if it failed or did not register any functions. But it currently returns the number of registered functions and if it didn't register anything, it returns 0, but that is considered success. This also fixes the return value. As if it succeeds, it returns the number of functions that were enabled, which is returned back to the user in ftrace_regex_write (the write() return code). If only one function is enabled, then the return code of the write is one, and this can confuse the user program in thinking it only wrote 1 byte. Link: http://lkml.kernel.org/r/20130509054413.30398.55650.stgit@mhiramat-M0-7522 Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tom Zanussi <tom.zanussi@intel.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> [ Rewrote change log to reflect that this fixes two bugs - SR ] Signed-off-by: Steven Rostedt <rostedt@goodmis.org>		2013-05-09 11:26:01 -04:00
..
debug	KGDB/KDB fixes and cleanups	2013-03-02 08:31:39 -08:00
events	Merge branch 'for-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2013-04-29 19:14:20 -07:00
gcov
irq	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-02-26 20:16:07 -08:00
power	Driver core patches for 3.9-rc1	2013-02-21 12:05:51 -08:00
sched	Merge branch 'for-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq	2013-04-29 19:07:40 -07:00
time	clockevents: Don't allow dummy broadcast timers	2013-03-07 17:16:11 +01:00
trace	tracing: Don't succeed if event_enable_func did not register anything	2013-05-09 11:26:01 -04:00
.gitignore	kernel/hz.bc: ignore.	2013-04-22 07:09:06 -07:00
acct.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-02-26 20:16:07 -08:00
async.c	async: rename and redefine async_func_ptr	2013-03-12 13:59:14 -07:00
audit_tree.c	kernel/audit_tree.c: tree will leak memory when failure occurs in audit_trim_trees()	2013-04-29 15:54:26 -07:00
audit_watch.c
audit.c	audit: don't check if kauditd is valid every time	2013-04-29 15:54:26 -07:00
audit.h	audit: remove unnecessary #if CONFIG_AUDIT	2013-04-29 15:54:26 -07:00
auditfilter.c	kernel/auditfilter.c: tree and watch will memory leak when failure occurs	2013-04-29 15:54:26 -07:00
auditsc.c	kernel/auditsc.c: use kzalloc instead of kmalloc+memset	2013-04-29 15:54:26 -07:00
backtracetest.c
bounds.c
capability.c	Add file_ns_capable() helper function for open-time capability checking	2013-04-14 10:06:31 -07:00
cgroup_freezer.c
cgroup.c	Merge branch 'for-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2013-04-29 19:14:20 -07:00
compat.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2013-02-23 18:50:11 -08:00
configs.c
context_tracking.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-19 18:19:48 -08:00
cpu_pm.c
cpu.c	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-19 19:04:55 -08:00
cpuset.c	Merge branch 'for-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2013-04-29 19:14:20 -07:00
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	Revert "lockdep: check that no locks held at freeze time"	2013-03-31 11:38:33 -07:00
extable.c
fork.c	userns: Don't allow CLONE_NEWUSER | CLONE_FS	2013-03-13 15:00:20 -07:00
freezer.c
futex_compat.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2013-02-23 18:50:11 -08:00
futex.c	futex: fix kernel-doc notation and spello	2013-03-12 20:42:10 -07:00
groups.c
hrtimer.c	hrtimer: Don't reinitialize a cpu_base lock on CPU_UP	2013-03-26 21:34:57 +01:00
hung_task.c
irq_work.c
itimer.c
jump_label.c
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c	kexec, vmalloc: export additional vmalloc layer information	2013-04-29 15:54:34 -07:00
kmod.c
kprobes.c	kprobes: Fix a double lock bug of kprobe_mutex	2013-04-18 08:58:38 -07:00
ksysfs.c
kthread.c	Merge branch 'for-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq	2013-04-29 19:07:40 -07:00
latencytop.c
lglock.c
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
lockdep.c	lockdep: Consolidate bug messages into a single print_lockdep_off() function	2013-04-26 08:37:22 +02:00
Makefile	Merge branch 'akpm' (final batch from Andrew)	2013-02-27 20:58:09 -08:00
modsign_certificate.S
modsign_pubkey.c
module_signing.c
module-internal.h
module.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-02-26 20:16:07 -08:00
mutex-debug.c
mutex-debug.h
mutex.c	mutex: Back out architecture specific check for negative mutex count	2013-04-19 09:33:36 +02:00
mutex.h
notifier.c
nsproxy.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-02-26 20:16:07 -08:00
padata.c
panic.c
params.c
pid_namespace.c	pid: Handle the exit of a multi-threaded init.	2013-03-26 03:41:23 -07:00
pid.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
posix-cpu-timers.c	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-19 19:05:45 -08:00
posix-timers.c	posix-timers: convert to idr_alloc()	2013-02-27 19:10:19 -08:00
printk.c	printk: fix failure to return error in devkmsg_poll()	2013-04-29 18:28:14 -07:00
profile.c
ptrace.c
range.c
rcu.h
rcupdate.c
rcutiny_plugin.h
rcutiny.c
rcutorture.c
rcutree_plugin.h
rcutree_trace.c
rcutree.c	kernel/: rename random32() to prandom_u32()	2013-04-29 18:28:42 -07:00
rcutree.h
relay.c	new helper: file_inode(file)	2013-02-22 23:31:31 -05:00
res_counter.c
resource.c	mem hotunplug: fix kfree() of bootmem memory	2013-04-29 15:54:40 -07:00
rtmutex_common.h
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c	locking/rtmutex/tester: Set correct permissions on sysfs files	2013-04-10 14:48:37 +02:00
rtmutex.c
rtmutex.h
rwsem.c
seccomp.c
semaphore.c
signal.c	kernel/signal.c: stop info leak via the tkill and the tgkill syscalls	2013-04-17 16:10:45 -07:00
smp.c	smp: make smp_call_function_many() use logic similar to smp_call_function_single()	2013-02-21 17:22:20 -08:00
smpboot.c	kthread: Prevent unpark race which puts threads on the wrong cpu	2013-04-12 14:18:43 +02:00
smpboot.h
softirq.c	Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-03-05 18:10:04 -08:00
spinlock.c
srcu.c
stacktrace.c
stop_machine.c	stop_machine: Mark per cpu stopper enabled early	2013-02-26 22:25:17 +01:00
sys_ni.c
sys.c	PM / reboot: call syscore_shutdown() after disable_nonboot_cpus()	2013-04-08 22:10:40 +02:00
sysctl_binary.c	sysctl: fix null checking in bin_dn_node_address()	2013-02-27 19:10:21 -08:00
sysctl.c	mm: replace hardcoded 3% with admin_reserve_pages knob	2013-04-29 15:54:36 -07:00
task_work.c
taskstats.c
test_kprobes.c	kernel/: rename random32() to prandom_u32()	2013-04-29 18:28:42 -07:00
time.c	time: don't inline EXPORT_SYMBOL functions	2013-02-21 17:22:19 -08:00
timeconst.bc
timer.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-19 18:19:48 -08:00
tracepoint.c	Tracing updates for Linux 3.10	2013-04-29 13:55:38 -07:00
tsacct.c
uid16.c
up.c
user_namespace.c	userns: Changing any namespace id mappings should require privileges	2013-04-14 18:11:32 -07:00
user-return-notifier.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
user.c	userns: Restrict when proc and sysfs can be mounted	2013-03-27 07:50:08 -07:00
utsname_sysctl.c	kernel/utsname_sysctl.c: put get/get_uts() into CONFIG_PROC_SYSCTL code block	2013-02-27 19:10:22 -08:00
utsname.c	kernel/utsname.c: fix wrong comment about clone_uts_ns()	2013-02-27 19:10:22 -08:00
wait.c
watchdog.c	Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-22 19:25:09 -08:00
workqueue_internal.h	workqueue: directly restore CPU affinity of workers from CPU_ONLINE	2013-03-19 13:45:21 -07:00
workqueue.c	workqueue: use kmem_cache_free() instead of kfree()	2013-04-09 11:33:40 -07:00