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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-05-31 14:07:15 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-05-31 14:07:15 +0400 |
| commit | e37c83c06c2690157a989df40dc99a6b61c9ea15 (patch) | |
| tree | 024dfb8b2c9abeec9ca7cb0c0136c276d9aacc91 /arch/sparc/kernel/stacktrace.c | |
| parent | ce1f7d30766f6549db6fa0b9e595e0d26a5b7d9a (diff) | |
| parent | 67a3e12b05e055c0415c556a315a3d3eb637e29e (diff) | |
| download | linux-e37c83c06c2690157a989df40dc99a6b61c9ea15.tar.xz | |
Merge commit 'v2.6.35-rc1' into for-2.6.36
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 acb12f673757..3e0815349630 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); } |