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| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2015-12-13 09:41:59 +0200 |
|---|---|---|
| committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2015-12-13 09:41:59 +0200 |
| commit | 9b18d42dda985c99db4adde45bbdf7cd79a7525c (patch) | |
| tree | 78481b44090a9ee19780091ade05a320cbc6a7bb /arch/mips/kernel/stacktrace.c | |
| parent | 39bdb17ebb5bd7a5c8a231d7cac4a4d5ccc58149 (diff) | |
| parent | 1b894521e60c1b91db1e8ba1278660e5c89f1b5f (diff) | |
Merge tag 'mac80211-next-for-davem-2015-12-07' into next
This pull request got a bit bigger than I wanted, due to
needing to reshuffle and fix some bugs. I merged mac80211
to get the right base for some of these changes.
* new mac80211 API for upcoming driver changes: EOSP handling,
key iteration
* scan abort changes allowing to cancel an ongoing scan
* VHT IBSS 80+80 MHz support
* re-enable full AP client state tracking after fixes
* various small fixes (that weren't relevant for mac80211)
* various cleanups
Diffstat (limited to 'arch/mips/kernel/stacktrace.c')
| -rw-r--r-- | arch/mips/kernel/stacktrace.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/arch/mips/kernel/stacktrace.c b/arch/mips/kernel/stacktrace.c index 1ba775d24d38f..506021f62549d 100644 --- a/arch/mips/kernel/stacktrace.c +++ b/arch/mips/kernel/stacktrace.c @@ -12,14 +12,15 @@ * Save stack-backtrace addresses into a stack_trace buffer: */ static void save_raw_context_stack(struct stack_trace *trace, - unsigned long reg29) + unsigned long reg29, int savesched) { unsigned long *sp = (unsigned long *)reg29; unsigned long addr; while (!kstack_end(sp)) { addr = *sp++; - if (__kernel_text_address(addr)) { + if (__kernel_text_address(addr) && + (savesched || !in_sched_functions(addr))) { if (trace->skip > 0) trace->skip--; else @@ -31,7 +32,7 @@ static void save_raw_context_stack(struct stack_trace *trace, } static void save_context_stack(struct stack_trace *trace, - struct task_struct *tsk, struct pt_regs *regs) + struct task_struct *tsk, struct pt_regs *regs, int savesched) { unsigned long sp = regs->regs[29]; #ifdef CONFIG_KALLSYMS @@ -43,20 +44,22 @@ static void save_context_stack(struct stack_trace *trace, (unsigned long)task_stack_page(tsk); if (stack_page && sp >= stack_page && sp <= stack_page + THREAD_SIZE - 32) - save_raw_context_stack(trace, sp); + save_raw_context_stack(trace, sp, savesched); return; } do { - if (trace->skip > 0) - trace->skip--; - else - trace->entries[trace->nr_entries++] = pc; - if (trace->nr_entries >= trace->max_entries) - break; + if (savesched || !in_sched_functions(pc)) { + if (trace->skip > 0) + trace->skip--; + else + trace->entries[trace->nr_entries++] = pc; + if (trace->nr_entries >= trace->max_entries) + break; + } pc = unwind_stack(tsk, &sp, pc, &ra); } while (pc); #else - save_raw_context_stack(trace, sp); + save_raw_context_stack(trace, sp, savesched); #endif } @@ -82,6 +85,6 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) regs->cp0_epc = tsk->thread.reg31; } else prepare_frametrace(regs); - save_context_stack(trace, tsk, regs); + save_context_stack(trace, tsk, regs, tsk == current); } EXPORT_SYMBOL_GPL(save_stack_trace_tsk); |