diff options
| author | merge <null@invalid> | 2009-01-22 13:55:32 +0000 |
|---|---|---|
| committer | Andy Green <agreen@octopus.localdomain> | 2009-01-22 13:55:32 +0000 |
| commit | aa6f5ffbdba45aa8e19e5048648fc6c7b25376d3 (patch) | |
| tree | fbb786d0ac6f8a774fd834e9ce951197e60fbffa /arch/sparc/kernel/stacktrace.c | |
| parent | f2d78193eae5dccd3d588d2c8ea0866efc368332 (diff) | |
MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141
pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 / fdf777a63bcb59e0dfd78bfe2c6242e01f6d4eb9 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040
stable-tracking-hist top was MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 / 90463bfd2d5a3c8b52f6e6d71024a00e052b0ced ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-mokopatches-tracking-hist-fix-stray-endmenu-patch
mokopatches-tracking-hist top was fix-stray-endmenu-patch / 3630e0be570de8057e7f8d2fe501ed353cdf34e6 ... parent commitmessage:
From: Andy Green <andy@openmoko.com>
fix-stray-endmenu.patch
Signed-off-by: Andy Green <andy@openmoko.com>
Diffstat (limited to 'arch/sparc/kernel/stacktrace.c')
| -rw-r--r-- | arch/sparc/kernel/stacktrace.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/sparc/kernel/stacktrace.c b/arch/sparc/kernel/stacktrace.c new file mode 100644 index 00000000000..acb12f67375 --- /dev/null +++ b/arch/sparc/kernel/stacktrace.c @@ -0,0 +1,64 @@ +#include <linux/sched.h> +#include <linux/stacktrace.h> +#include <linux/thread_info.h> +#include <linux/module.h> +#include <asm/ptrace.h> +#include <asm/stacktrace.h> + +#include "kstack.h" + +static void __save_stack_trace(struct thread_info *tp, + struct stack_trace *trace, + bool skip_sched) +{ + unsigned long ksp, fp; + + if (tp == current_thread_info()) { + stack_trace_flush(); + __asm__ __volatile__("mov %%fp, %0" : "=r" (ksp)); + } else { + ksp = tp->ksp; + } + + fp = ksp + STACK_BIAS; + do { + struct sparc_stackf *sf; + struct pt_regs *regs; + unsigned long pc; + + if (!kstack_valid(tp, fp)) + break; + + sf = (struct sparc_stackf *) fp; + regs = (struct pt_regs *) (sf + 1); + + if (kstack_is_trap_frame(tp, regs)) { + if (!(regs->tstate & TSTATE_PRIV)) + break; + pc = regs->tpc; + fp = regs->u_regs[UREG_I6] + STACK_BIAS; + } else { + pc = sf->callers_pc; + fp = (unsigned long)sf->fp + STACK_BIAS; + } + + if (trace->skip > 0) + trace->skip--; + else if (!skip_sched || !in_sched_functions(pc)) + trace->entries[trace->nr_entries++] = pc; + } while (trace->nr_entries < trace->max_entries); +} + +void save_stack_trace(struct stack_trace *trace) +{ + __save_stack_trace(current_thread_info(), trace, false); +} +EXPORT_SYMBOL_GPL(save_stack_trace); + +void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) +{ + struct thread_info *tp = task_thread_info(tsk); + + __save_stack_trace(tp, trace, true); +} +EXPORT_SYMBOL_GPL(save_stack_trace_tsk); |