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sh: stacktrace/lockdep/irqflags tracing support.

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Wire up all of the essentials for lockdep..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2006-12-04 18:17:28 +09:00
parent c03c69610b
commit afbfb52e47
11 changed files with 289 additions and 103 deletions
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64
arch/sh/kernel/entry-common.S
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@@ -100,6 +100,11 @@ debug_trap:
.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 @@ ENTRY(exception_error)
.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 @@ need_resched:
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 @@ need_resched:
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 @@ noresched:
.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 @@ work_resched:
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 @@ work_resched:
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 @@ syscall_exit_work:
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 @@ syscall_trace_entry:
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 @@ ENTRY(system_call)
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_call:
!
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 @@ syscall_exit:
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