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[SPARC64]: Add irqtrace/stacktrace/lockdep support.
Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller
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Dec 10, 2006
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| #include <linux/sched.h> | ||
| #include <linux/stacktrace.h> | ||
| #include <linux/thread_info.h> | ||
| #include <asm/ptrace.h> | ||
|
|
||
| void save_stack_trace(struct stack_trace *trace, struct task_struct *task) | ||
| { | ||
| unsigned long ksp, fp, thread_base; | ||
| struct thread_info *tp; | ||
|
|
||
| if (!task) | ||
| task = current; | ||
| tp = task_thread_info(task); | ||
| if (task == current) { | ||
| flushw_all(); | ||
| __asm__ __volatile__( | ||
| "mov %%fp, %0" | ||
| : "=r" (ksp) | ||
| ); | ||
| } else | ||
| ksp = tp->ksp; | ||
|
|
||
| fp = ksp + STACK_BIAS; | ||
| thread_base = (unsigned long) tp; | ||
| do { | ||
| struct reg_window *rw; | ||
|
|
||
| /* Bogus frame pointer? */ | ||
| if (fp < (thread_base + sizeof(struct thread_info)) || | ||
| fp >= (thread_base + THREAD_SIZE)) | ||
| break; | ||
|
|
||
| rw = (struct reg_window *) fp; | ||
| if (trace->skip > 0) | ||
| trace->skip--; | ||
| else | ||
| trace->entries[trace->nr_entries++] = rw->ins[7]; | ||
|
|
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| fp = rw->ins[6] + STACK_BIAS; | ||
| } while (trace->nr_entries < trace->max_entries); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| /* | ||
| * include/asm-sparc64/irqflags.h | ||
| * | ||
| * IRQ flags handling | ||
| * | ||
| * This file gets included from lowlevel asm headers too, to provide | ||
| * wrapped versions of the local_irq_*() APIs, based on the | ||
| * raw_local_irq_*() functions from the lowlevel headers. | ||
| */ | ||
| #ifndef _ASM_IRQFLAGS_H | ||
| #define _ASM_IRQFLAGS_H | ||
|
|
||
| #ifndef __ASSEMBLY__ | ||
|
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| static inline unsigned long __raw_local_save_flags(void) | ||
| { | ||
| unsigned long flags; | ||
|
|
||
| __asm__ __volatile__( | ||
| "rdpr %%pil, %0" | ||
| : "=r" (flags) | ||
| ); | ||
|
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| return flags; | ||
| } | ||
|
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| #define raw_local_save_flags(flags) \ | ||
| do { (flags) = __raw_local_save_flags(); } while (0) | ||
|
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| static inline void raw_local_irq_restore(unsigned long flags) | ||
| { | ||
| __asm__ __volatile__( | ||
| "wrpr %0, %%pil" | ||
| : /* no output */ | ||
| : "r" (flags) | ||
| : "memory" | ||
| ); | ||
| } | ||
|
|
||
| static inline void raw_local_irq_disable(void) | ||
| { | ||
| __asm__ __volatile__( | ||
| "wrpr 15, %%pil" | ||
| : /* no outputs */ | ||
| : /* no inputs */ | ||
| : "memory" | ||
| ); | ||
| } | ||
|
|
||
| static inline void raw_local_irq_enable(void) | ||
| { | ||
| __asm__ __volatile__( | ||
| "wrpr 0, %%pil" | ||
| : /* no outputs */ | ||
| : /* no inputs */ | ||
| : "memory" | ||
| ); | ||
| } | ||
|
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| static inline int raw_irqs_disabled_flags(unsigned long flags) | ||
| { | ||
| return (flags > 0); | ||
| } | ||
|
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| static inline int raw_irqs_disabled(void) | ||
| { | ||
| unsigned long flags = __raw_local_save_flags(); | ||
|
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| return raw_irqs_disabled_flags(flags); | ||
| } | ||
|
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| /* | ||
| * For spinlocks, etc: | ||
| */ | ||
| static inline unsigned long __raw_local_irq_save(void) | ||
| { | ||
| unsigned long flags = __raw_local_save_flags(); | ||
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| raw_local_irq_disable(); | ||
|
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| return flags; | ||
| } | ||
|
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| #define raw_local_irq_save(flags) \ | ||
| do { (flags) = __raw_local_irq_save(); } while (0) | ||
|
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| #endif /* (__ASSEMBLY__) */ | ||
|
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| #endif /* !(_ASM_IRQFLAGS_H) */ |
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