Changbin Du 02a8a256f5 tracing: Fix missing return symbol in function_graph output ... commit 1fe4293f4b upstream. The function_graph tracer does not show the interrupt return marker for the leaf entry. On leaf entries, we see an unbalanced interrupt marker (the interrupt was entered, but nevern left). Before: 1) | SyS_write() { 1) | __fdget_pos() { 1) 0.061 us | __fget_light(); 1) 0.289 us | } 1) | vfs_write() { 1) 0.049 us | rw_verify_area(); 1) + 15.424 us | __vfs_write(); 1) ==========> | 1) 6.003 us | smp_apic_timer_interrupt(); 1) 0.055 us | __fsnotify_parent(); 1) 0.073 us | fsnotify(); 1) + 23.665 us | } 1) + 24.501 us | } After: 0) | SyS_write() { 0) | __fdget_pos() { 0) 0.052 us | __fget_light(); 0) 0.328 us | } 0) | vfs_write() { 0) 0.057 us | rw_verify_area(); 0) | __vfs_write() { 0) ==========> | 0) 8.548 us | smp_apic_timer_interrupt(); 0) <========== | 0) + 36.507 us | } /* __vfs_write */ 0) 0.049 us | __fsnotify_parent(); 0) 0.066 us | fsnotify(); 0) + 50.064 us | } 0) + 50.952 us | } Link: http://lkml.kernel.org/r/1517413729-20411-1-git-send-email-changbin.du@intel.com Cc: stable@vger.kernel.org Fixes: f8b755ac8e ("tracing/function-graph-tracer: Output arrows signal on hardirq call/return") Signed-off-by: Changbin Du <changbin.du@intel.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-07-11 16:03:48 +02:00
..
bpf
configs
debug	kdb: make "mdr" command repeat	2018-05-30 07:49:17 +02:00
events	perf/core: Fix perf_output_read_group()	2018-05-30 07:49:12 +02:00
gcov
irq
livepatch
locking	locking/qspinlock: Ensure node->count is updated before initialising node	2018-05-30 07:48:57 +02:00
power	x86/power: Fix swsusp_arch_resume prototype	2018-05-30 07:48:55 +02:00
printk
rcu
sched	sched/rt: Fix rq->clock_update_flags < RQCF_ACT_SKIP warning	2018-05-30 07:49:08 +02:00
time	time: Make sure jiffies_to_msecs() preserves non-zero time periods	2018-07-03 11:21:30 +02:00
trace	tracing: Fix missing return symbol in function_graph output	2018-07-11 16:03:48 +02:00
.gitignore
acct.c
async.c
audit_fsnotify.c
audit_tree.c
audit_watch.c
audit.c	audit: return on memory error to avoid null pointer dereference	2018-05-30 07:49:16 +02:00
audit.h
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
cgroup_freezer.c
cgroup_pids.c
cgroup.c
compat.c
configs.c
context_tracking.c
cpu_pm.c
cpu.c
cpuset.c
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c
extable.c
fork.c
freezer.c
futex_compat.c
futex.c
groups.c
hung_task.c
irq_work.c
jump_label.c
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec_core.c
kexec_file.c
kexec_internal.h
kexec.c
kmod.c
kprobes.c
ksysfs.c
kthread.c
latencytop.c
Makefile
membarrier.c
memremap.c
module_signing.c
module-internal.h
module.c
notifier.c
nsproxy.c
padata.c
panic.c
params.c
pid_namespace.c
pid.c
profile.c
ptrace.c
range.c
reboot.c
relay.c	kernel/relay.c: limit kmalloc size to KMALLOC_MAX_SIZE	2018-05-30 07:49:00 +02:00
resource.c
seccomp.c
signal.c	kernel/signal.c: avoid undefined behaviour in kill_something_info	2018-05-30 07:48:52 +02:00
smp.c
smpboot.c
smpboot.h
softirq.c
stacktrace.c
stop_machine.c
sys_ni.c
sys.c	kernel/sys.c: fix potential Spectre v1 issue	2018-05-30 07:48:51 +02:00
sysctl_binary.c
sysctl.c
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
uid16.c
up.c
user_namespace.c
user-return-notifier.c
user.c
utsname_sysctl.c
utsname.c
watchdog.c
workqueue_internal.h
workqueue.c	workqueue: use put_device() instead of kfree()	2018-05-30 07:49:04 +02:00