sh: stacktrace/lockdep/irqflags tracing support.
Wire up all of the essentials for lockdep..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S
index 8f96d21..29136a3 100644
--- a/arch/sh/kernel/entry-common.S
+++ b/arch/sh/kernel/entry-common.S
@@ -100,6 +100,11 @@
.align 2
ENTRY(exception_error)
!
+#ifdef CONFIG_TRACE_IRQFLAGS
+ mov.l 3f, r0
+ jsr @r0
+ nop
+#endif
sti
mov.l 2f, r0
jmp @r0
@@ -109,10 +114,18 @@
.align 2
1: .long break_point_trap_software
2: .long do_exception_error
+#ifdef CONFIG_TRACE_IRQFLAGS
+3: .long trace_hardirqs_on
+#endif
.align 2
ret_from_exception:
preempt_stop()
+#ifdef CONFIG_TRACE_IRQFLAGS
+ mov.l 4f, r0
+ jsr @r0
+ nop
+#endif
ENTRY(ret_from_irq)
!
mov #OFF_SR, r0
@@ -143,6 +156,11 @@
mov.l 1f, r0
mov.l r0, @(TI_PRE_COUNT,r8)
+#ifdef CONFIG_TRACE_IRQFLAGS
+ mov.l 3f, r0
+ jsr @r0
+ nop
+#endif
sti
mov.l 2f, r0
jsr @r0
@@ -150,9 +168,15 @@
mov #0, r0
mov.l r0, @(TI_PRE_COUNT,r8)
cli
+#ifdef CONFIG_TRACE_IRQFLAGS
+ mov.l 4f, r0
+ jsr @r0
+ nop
+#endif
bra need_resched
nop
+
noresched:
bra __restore_all
nop
@@ -160,11 +184,20 @@
.align 2
1: .long PREEMPT_ACTIVE
2: .long schedule
+#ifdef CONFIG_TRACE_IRQFLAGS
+3: .long trace_hardirqs_on
+4: .long trace_hardirqs_off
+#endif
#endif
ENTRY(resume_userspace)
! r8: current_thread_info
cli
+#ifdef CONFIG_TRACE_IRQFLAGS
+ mov.l 5f, r0
+ jsr @r0
+ nop
+#endif
mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
tst #_TIF_WORK_MASK, r0
bt/s __restore_all
@@ -210,6 +243,11 @@
jsr @r1 ! schedule
nop
cli
+#ifdef CONFIG_TRACE_IRQFLAGS
+ mov.l 5f, r0
+ jsr @r0
+ nop
+#endif
!
mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
tst #_TIF_WORK_MASK, r0
@@ -221,6 +259,10 @@
1: .long schedule
2: .long do_notify_resume
3: .long restore_all
+#ifdef CONFIG_TRACE_IRQFLAGS
+4: .long trace_hardirqs_on
+5: .long trace_hardirqs_off
+#endif
.align 2
syscall_exit_work:
@@ -229,6 +271,11 @@
tst #_TIF_SYSCALL_TRACE, r0
bt/s work_pending
tst #_TIF_NEED_RESCHED, r0
+#ifdef CONFIG_TRACE_IRQFLAGS
+ mov.l 5f, r0
+ jsr @r0
+ nop
+#endif
sti
! XXX setup arguments...
mov.l 4f, r0 ! do_syscall_trace
@@ -265,7 +312,7 @@
mov.l r0, @(OFF_R0,r15) ! Return value
__restore_all:
- mov.l 1f,r0
+ mov.l 1f, r0
jmp @r0
nop
@@ -331,7 +378,13 @@
mov #OFF_TRA, r9
add r15, r9
mov.l r8, @r9 ! set TRA value to tra
+#ifdef CONFIG_TRACE_IRQFLAGS
+ mov.l 5f, r10
+ jsr @r10
+ nop
+#endif
sti
+
!
get_current_thread_info r8, r10
mov.l @(TI_FLAGS,r8), r8
@@ -355,6 +408,11 @@
!
syscall_exit:
cli
+#ifdef CONFIG_TRACE_IRQFLAGS
+ mov.l 6f, r0
+ jsr @r0
+ nop
+#endif
!
get_current_thread_info r8, r0
mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
@@ -369,3 +427,7 @@
2: .long NR_syscalls
3: .long sys_call_table
4: .long do_syscall_trace
+#ifdef CONFIG_TRACE_IRQFLAGS
+5: .long trace_hardirqs_on
+6: .long trace_hardirqs_off
+#endif