Anton Blanchard 151772dbfa tracing/trace_stack: Fix stack trace on ppc64 ... save_stack_trace() stores the instruction pointer, not the function descriptor. On ppc64 the trace stack code currently dereferences the instruction pointer and shows 8 bytes of instructions in our backtraces: # cat /sys/kernel/debug/tracing/stack_trace Depth Size Location (26 entries) ----- ---- -------- 0) 5424 112 0x6000000048000004 1) 5312 160 0x60000000ebad01b0 2) 5152 160 0x2c23000041c20030 3) 4992 240 0x600000007c781b79 4) 4752 160 0xe84100284800000c 5) 4592 192 0x600000002fa30000 6) 4400 256 0x7f1800347b7407e0 7) 4144 208 0xe89f0108f87f0070 8) 3936 272 0xe84100282fa30000 Since we aren't dealing with function descriptors, use %pS instead of %pF to fix it: # cat /sys/kernel/debug/tracing/stack_trace Depth Size Location (26 entries) ----- ---- -------- 0) 5424 112 ftrace_call+0x4/0x8 1) 5312 160 .current_io_context+0x28/0x74 2) 5152 160 .get_io_context+0x48/0xa0 3) 4992 240 .cfq_set_request+0x94/0x4c4 4) 4752 160 .elv_set_request+0x60/0x84 5) 4592 192 .get_request+0x2d4/0x468 6) 4400 256 .get_request_wait+0x7c/0x258 7) 4144 208 .__make_request+0x49c/0x610 8) 3936 272 .generic_make_request+0x390/0x434 Signed-off-by: Anton Blanchard <anton@samba.org> Cc: rostedt@goodmis.org Cc: fweisbec@gmail.com LKML-Reference: <20100825013238.GE28360@kryten> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2010-08-25 13:08:48 +02:00
..
debug	kdb: fix compile error without CONFIG_KALLSYMS	2010-08-16 15:58:29 -05:00
gcov
irq	irq: Add new IRQ flag IRQF_NO_SUSPEND	2010-07-29 13:24:57 +02:00
power	Merge branch 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block	2010-08-10 15:22:42 -07:00
time	time: Workaround gcc loop optimization that causes 64bit div errors	2010-08-13 12:03:24 -07:00
trace	tracing/trace_stack: Fix stack trace on ppc64	2010-08-25 13:08:48 +02:00
.gitignore
acct.c	pass a struct path to vfs_statfs	2010-08-09 16:48:42 -04:00
async.c	async: use workqueue for worker pool	2010-07-14 11:29:46 +02:00
audit.c	Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify	2010-08-10 11:39:13 -07:00
audit.h	Audit: split audit watch Kconfig	2010-07-28 09:58:19 -04:00
audit_tree.c	fanotify: use both marks when possible	2010-07-28 10:18:55 -04:00
audit_watch.c	Revert "fsnotify: store struct file not struct path"	2010-08-12 14:23:04 -07:00
auditfilter.c	audit: do not get and put just to free a watch	2010-07-28 09:58:17 -04:00
auditsc.c	vfs: add helpers to get root and pwd	2010-08-11 00:28:20 -04:00
backtracetest.c
bounds.c
capability.c
cgroup.c	cgroups: save space for the terminator	2010-08-11 08:59:18 -07:00
cgroup_freezer.c
compat.c	rlimits: switch more rlimit syscalls to do_prlimit	2010-07-16 09:48:48 +02:00
configs.c
cpu.c
cpuset.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-08-06 09:39:22 -07:00
cred.c	Add a dummy printk function for the maintenance of unused printks	2010-08-12 09:51:35 -07:00
delayacct.c
dma.c
early_res.c	kmemleak: Add support for NO_BOOTMEM configurations	2010-07-19 11:54:15 +01:00
elfcore.c
exec_domain.c	sys_personality: remove the bogus checks in sys_personality()->__set_personality() path	2010-08-09 20:45:05 -07:00
exit.c	Fix unprotected access to task credentials in waitid()	2010-08-17 18:07:43 -07:00
extable.c
fork.c	mm: make the vma list be doubly linked	2010-08-21 08:49:21 -07:00
freezer.c
futex.c	futex: futex_find_get_task remove credentails check	2010-06-30 15:43:44 -07:00
futex_compat.c
groups.c
hrtimer.c	Merge branch 'timers-timekeeping-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-08-06 13:18:29 -07:00
hung_task.c
hw_breakpoint.c	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-08-06 09:30:52 -07:00
itimer.c
kallsyms.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c	kexec: return -EFAULT on copy_to_user() failures	2010-08-11 08:59:22 -07:00
kfifo.c	kfifo: implement missing __kfifo_skip_r()	2010-08-20 09:34:54 -07:00
kmod.c	Make do_execve() take a const filename pointer	2010-08-17 18:07:43 -07:00
kprobes.c
ksysfs.c
kthread.c
latencytop.c
lockdep.c
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
Makefile	Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify	2010-08-10 11:39:13 -07:00
module.c	module: cleanup comments, remove noinline	2010-08-05 12:59:13 +09:30
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c
ns_cgroup.c
nsproxy.c
padata.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2010-08-04 15:23:14 -07:00
panic.c	lib/bug.c: add oops end marker to WARN implementation	2010-08-11 08:59:22 -07:00
params.c	param: locking for kernel parameters	2010-08-11 23:04:20 +09:30
perf_event.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-08-06 09:39:22 -07:00
pid.c	pids: alloc_pidmap: remove the unnecessary boundary checks	2010-08-11 08:59:20 -07:00
pid_namespace.c
pm_qos_params.c	pm_qos: Get rid of the allocation in pm_qos_add_request()	2010-07-19 02:00:34 +02:00
posix-cpu-timers.c	Merge branch 'writable_limits' of git://decibel.fi.muni.cz/~xslaby/linux	2010-08-10 12:07:51 -07:00
posix-timers.c	posix_timer: Move copy_to_user(created_timer_id) down in timer_create()	2010-07-23 15:08:12 +02:00
printk.c	gcc-4.6: printk: use stable variable to dump kmsg buffer	2010-08-09 20:45:06 -07:00
profile.c
ptrace.c	ptrace: optimize exit_ptrace() for the likely case	2010-08-11 08:59:19 -07:00
range.c	kernel/range: remove unused definition of ARRAY_SIZE()	2010-08-09 20:45:06 -07:00
rcupdate.c
rcutiny.c
rcutiny_plugin.h
rcutorture.c
rcutree.c
rcutree.h
rcutree_plugin.h
rcutree_trace.c
relay.c
res_counter.c
resource.c
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rtmutex_common.h
rwsem.c
sched.c	mutex: Improve the scalability of optimistic spinning	2010-08-23 10:56:27 +02:00
sched_clock.c
sched_cpupri.c	sched: No need for bootmem special cases	2010-07-17 12:06:22 +02:00
sched_cpupri.h	sched: No need for bootmem special cases	2010-07-17 12:06:22 +02:00
sched_debug.c	sched: Use correct macro to display sched_child_runs_first in /proc/sched_debug	2010-07-21 21:46:12 +02:00
sched_fair.c	Merge branch 'linus' into sched/core	2010-07-21 21:45:08 +02:00
sched_features.h
sched_idletask.c
sched_rt.c
sched_stats.h
seccomp.c
semaphore.c
signal.c	CRED: Fix RCU warning due to previous patch fixing __task_cred()'s checks	2010-08-04 11:17:10 -07:00
smp.c
softirq.c
spinlock.c
srcu.c
stacktrace.c
stop_machine.c	stop_machine: struct cpu_stopper, remove alignment padding on 64 bits	2010-08-09 20:45:06 -07:00
sys.c	rlimits: implement prlimit64 syscall	2010-07-16 09:48:48 +02:00
sys_ni.c	fanotify: sys_fanotify_mark declartion	2010-07-28 09:58:55 -04:00
sysctl.c	Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify	2010-08-10 11:39:13 -07:00
sysctl_binary.c
sysctl_check.c
taskstats.c
test_kprobes.c
time.c	time: Kill off CONFIG_GENERIC_TIME	2010-07-27 12:40:54 +02:00
timeconst.pl
timer.c	kernel/timer.c: fix kernel-doc function parameter warning	2010-08-10 15:33:09 -07:00
tracepoint.c
tsacct.c
uid16.c
up.c
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
wait.c
watchdog.c	watchdog: Don't throttle the watchdog	2010-08-23 10:48:05 +02:00
workqueue.c	workqueue: Add basic tracepoints to track workqueue execution	2010-08-21 13:19:37 -07:00
workqueue_sched.h	workqueue: implement concurrency managed dynamic worker pool	2010-06-29 10:07:14 +02:00