diff options
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/stacktrace.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/x86/kernel/stacktrace.c b/arch/x86/kernel/stacktrace.c index 6fa6cf036c70..55771fd7e545 100644 --- a/arch/x86/kernel/stacktrace.c +++ b/arch/x86/kernel/stacktrace.c @@ -33,6 +33,19 @@ static void save_stack_address(void *data, unsigned long addr) trace->entries[trace->nr_entries++] = addr; } +static void save_stack_address_nosched(void *data, unsigned long addr) +{ + struct stack_trace *trace = (struct stack_trace *)data; + if (in_sched_functions(addr)) + return; + if (trace->skip > 0) { + trace->skip--; + return; + } + if (trace->nr_entries < trace->max_entries) + trace->entries[trace->nr_entries++] = addr; +} + static const struct stacktrace_ops save_stack_ops = { .warning = save_stack_warning, .warning_symbol = save_stack_warning_symbol, @@ -40,6 +53,13 @@ static const struct stacktrace_ops save_stack_ops = { .address = save_stack_address, }; +static const struct stacktrace_ops save_stack_ops_nosched = { + .warning = save_stack_warning, + .warning_symbol = save_stack_warning_symbol, + .stack = save_stack_stack, + .address = save_stack_address_nosched, +}; + /* * Save stack-backtrace addresses into a stack_trace buffer. */ @@ -50,3 +70,10 @@ void save_stack_trace(struct stack_trace *trace) trace->entries[trace->nr_entries++] = ULONG_MAX; } EXPORT_SYMBOL(save_stack_trace); + +void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) +{ + dump_trace(tsk, NULL, NULL, &save_stack_ops_nosched, trace); + if (trace->nr_entries < trace->max_entries) + trace->entries[trace->nr_entries++] = ULONG_MAX; +} |