diff options
Diffstat (limited to 'arch/sh/kernel')
| -rw-r--r-- | arch/sh/kernel/entry-common.S | 63 | ||||
| -rw-r--r-- | arch/sh/kernel/io_trapped.c | 7 |
2 files changed, 20 insertions, 50 deletions
diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S index d62175650c5..fc26ccd8278 100644 --- a/arch/sh/kernel/entry-common.S +++ b/arch/sh/kernel/entry-common.S @@ -45,7 +45,7 @@ */ #if defined(CONFIG_PREEMPT) -# define preempt_stop() cli +# define preempt_stop() cli ; TRACE_IRQS_OFF #else # define preempt_stop() # define resume_kernel __restore_all @@ -55,11 +55,7 @@ .align 2 ENTRY(exception_error) ! -#ifdef CONFIG_TRACE_IRQFLAGS - mov.l 2f, r0 - jsr @r0 - nop -#endif + TRACE_IRQS_ON sti mov.l 1f, r0 jmp @r0 @@ -67,22 +63,23 @@ ENTRY(exception_error) .align 2 1: .long do_exception_error -#ifdef CONFIG_TRACE_IRQFLAGS -2: .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 mov.l @(r0,r15), r0 ! get status register + + shlr2 r0 + and #0x3c, r0 + cmp/eq #0x3c, r0 + bt 9f + TRACE_IRQS_ON +9: + mov #OFF_SR, r0 + mov.l @(r0,r15), r0 ! get status register shll r0 shll r0 ! kernel space? get_current_thread_info r8, r0 @@ -125,11 +122,7 @@ noresched: ENTRY(resume_userspace) ! r8: current_thread_info cli -#ifdef CONFIG_TRACE_IRQFLAGS - mov.l 5f, r0 - jsr @r0 - nop -#endif + TRACE_IRQS_OfF mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags tst #(_TIF_WORK_MASK & 0xff), r0 bt/s __restore_all @@ -156,11 +149,7 @@ work_resched: jsr @r1 ! schedule nop cli -#ifdef CONFIG_TRACE_IRQFLAGS - mov.l 5f, r0 - jsr @r0 - nop -#endif + TRACE_IRQS_OFF ! mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags tst #(_TIF_WORK_MASK & 0xff), r0 @@ -172,10 +161,6 @@ work_resched: 1: .long schedule 2: .long do_notify_resume 3: .long resume_userspace -#ifdef CONFIG_TRACE_IRQFLAGS -4: .long trace_hardirqs_on -5: .long trace_hardirqs_off -#endif .align 2 syscall_exit_work: @@ -184,11 +169,7 @@ syscall_exit_work: tst #(_TIF_WORK_SYSCALL_MASK & 0xff), r0 bt/s work_pending tst #_TIF_NEED_RESCHED, r0 -#ifdef CONFIG_TRACE_IRQFLAGS - mov.l 5f, r0 - jsr @r0 - nop -#endif + TRACE_IRQS_ON sti mov r15, r4 mov.l 8f, r0 ! do_syscall_trace_leave @@ -321,11 +302,7 @@ ENTRY(system_call) bt/s debug_trap ! it's a debug trap.. nop -#ifdef CONFIG_TRACE_IRQFLAGS - mov.l 5f, r10 - jsr @r10 - nop -#endif + TRACE_IRQS_ON sti ! @@ -355,11 +332,7 @@ syscall_call: ! syscall_exit: cli -#ifdef CONFIG_TRACE_IRQFLAGS - mov.l 6f, r0 - jsr @r0 - nop -#endif + TRACE_IRQS_OFF ! get_current_thread_info r8, r0 mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags @@ -377,9 +350,5 @@ syscall_exit: #endif 2: .long NR_syscalls 3: .long sys_call_table -#ifdef CONFIG_TRACE_IRQFLAGS -5: .long trace_hardirqs_on -6: .long trace_hardirqs_off -#endif 7: .long do_syscall_trace_enter 8: .long do_syscall_trace_leave diff --git a/arch/sh/kernel/io_trapped.c b/arch/sh/kernel/io_trapped.c index 77dfecb6437..e27a19e1f46 100644 --- a/arch/sh/kernel/io_trapped.c +++ b/arch/sh/kernel/io_trapped.c @@ -112,14 +112,15 @@ void __iomem *match_trapped_io_handler(struct list_head *list, struct trapped_io *tiop; struct resource *res; int k, len; + unsigned long flags; - spin_lock_irq(&trapped_lock); + spin_lock_irqsave(&trapped_lock, flags); list_for_each_entry(tiop, list, list) { voffs = 0; for (k = 0; k < tiop->num_resources; k++) { res = tiop->resource + k; if (res->start == offset) { - spin_unlock_irq(&trapped_lock); + spin_unlock_irqrestore(&trapped_lock, flags); return tiop->virt_base + voffs; } @@ -127,7 +128,7 @@ void __iomem *match_trapped_io_handler(struct list_head *list, voffs += roundup(len, PAGE_SIZE); } } - spin_unlock_irq(&trapped_lock); + spin_unlock_irqrestore(&trapped_lock, flags); return NULL; } EXPORT_SYMBOL_GPL(match_trapped_io_handler); |