diff options
Diffstat (limited to 'arch/x86/kernel/stacktrace.c')
| -rw-r--r-- | arch/x86/kernel/stacktrace.c | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/arch/x86/kernel/stacktrace.c b/arch/x86/kernel/stacktrace.c index 6fa6cf036c70..02f0f61f5b11 100644 --- a/arch/x86/kernel/stacktrace.c +++ b/arch/x86/kernel/stacktrace.c @@ -22,9 +22,23 @@ static int save_stack_stack(void *data, char *name) return -1; } -static void save_stack_address(void *data, unsigned long addr) +static void save_stack_address(void *data, unsigned long addr, int reliable) +{ + struct stack_trace *trace = data; + if (trace->skip > 0) { + trace->skip--; + return; + } + if (trace->nr_entries < trace->max_entries) + trace->entries[trace->nr_entries++] = addr; +} + +static void +save_stack_address_nosched(void *data, unsigned long addr, int reliable) { struct stack_trace *trace = (struct stack_trace *)data; + if (in_sched_functions(addr)) + return; if (trace->skip > 0) { trace->skip--; return; @@ -40,13 +54,26 @@ 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. */ void save_stack_trace(struct stack_trace *trace) { - dump_trace(current, NULL, NULL, &save_stack_ops, trace); + dump_trace(current, NULL, NULL, 0, &save_stack_ops, trace); + if (trace->nr_entries < trace->max_entries) + trace->entries[trace->nr_entries++] = ULONG_MAX; +} + +void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) +{ + dump_trace(tsk, NULL, NULL, 0, &save_stack_ops_nosched, trace); if (trace->nr_entries < trace->max_entries) trace->entries[trace->nr_entries++] = ULONG_MAX; } -EXPORT_SYMBOL(save_stack_trace); |