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| author | Paul Mundt <lethal@linux-sh.org> | 2006-12-04 18:17:28 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2006-12-06 10:45:40 +0900 |
| commit | afbfb52e47273a440df33274452c603e8c332de2 (patch) | |
| tree | 041dc70061a67e787b362959298e093830b4b4d7 /arch/sh/kernel/entry-common.S | |
| parent | c03c69610bfa728805deceeb624ee4268c722a5a (diff) | |
| download | kernel_samsung_smdk4412-afbfb52e47273a440df33274452c603e8c332de2.zip kernel_samsung_smdk4412-afbfb52e47273a440df33274452c603e8c332de2.tar.gz kernel_samsung_smdk4412-afbfb52e47273a440df33274452c603e8c332de2.tar.bz2 | |
sh: stacktrace/lockdep/irqflags tracing support.
Wire up all of the essentials for lockdep..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/entry-common.S')
| -rw-r--r-- | arch/sh/kernel/entry-common.S | 64 |
1 files changed, 63 insertions, 1 deletions
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 @@ 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 |