diff options
| author | NeilBrown <neilb@suse.de> | 2010-05-22 08:31:36 +1000 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2010-05-22 08:31:36 +1000 |
| commit | 19fdb9eefb21b72edbc365b838502780c392bad6 (patch) | |
| tree | deae04c48532d6eab64ed4b0396737bb854b5506 /arch/sparc/kernel/stacktrace.c | |
| parent | be6800a73aa2f3dc14744c3b80e676d189789f04 (diff) | |
| parent | 3ff195b011d7decf501a4d55aeed312731094796 (diff) | |
Merge commit '3ff195b011d7decf501a4d55aeed312731094796' into for-linus
Conflicts:
drivers/md/md.c
- Resolved conflict in md_update_sb
- Added extra 'NULL' arg to new instance of sysfs_get_dirent.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'arch/sparc/kernel/stacktrace.c')
| -rw-r--r-- | arch/sparc/kernel/stacktrace.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/arch/sparc/kernel/stacktrace.c b/arch/sparc/kernel/stacktrace.c index acb12f67375..3e081534963 100644 --- a/arch/sparc/kernel/stacktrace.c +++ b/arch/sparc/kernel/stacktrace.c @@ -1,6 +1,7 @@ #include <linux/sched.h> #include <linux/stacktrace.h> #include <linux/thread_info.h> +#include <linux/ftrace.h> #include <linux/module.h> #include <asm/ptrace.h> #include <asm/stacktrace.h> @@ -12,6 +13,10 @@ static void __save_stack_trace(struct thread_info *tp, bool skip_sched) { unsigned long ksp, fp; +#ifdef CONFIG_FUNCTION_GRAPH_TRACER + struct task_struct *t; + int graph = 0; +#endif if (tp == current_thread_info()) { stack_trace_flush(); @@ -21,6 +26,9 @@ static void __save_stack_trace(struct thread_info *tp, } fp = ksp + STACK_BIAS; +#ifdef CONFIG_FUNCTION_GRAPH_TRACER + t = tp->task; +#endif do { struct sparc_stackf *sf; struct pt_regs *regs; @@ -44,8 +52,21 @@ static void __save_stack_trace(struct thread_info *tp, if (trace->skip > 0) trace->skip--; - else if (!skip_sched || !in_sched_functions(pc)) + else if (!skip_sched || !in_sched_functions(pc)) { trace->entries[trace->nr_entries++] = pc; +#ifdef CONFIG_FUNCTION_GRAPH_TRACER + if ((pc + 8UL) == (unsigned long) &return_to_handler) { + int index = t->curr_ret_stack; + if (t->ret_stack && index >= graph) { + pc = t->ret_stack[index - graph].ret; + if (trace->nr_entries < + trace->max_entries) + trace->entries[trace->nr_entries++] = pc; + graph++; + } + } +#endif + } } while (trace->nr_entries < trace->max_entries); } |