18637c099SIngo Molnar #ifndef __LINUX_STACKTRACE_H 28637c099SIngo Molnar #define __LINUX_STACKTRACE_H 38637c099SIngo Molnar 4*897312bdSAndrew Morton struct task_struct; 5*897312bdSAndrew Morton 68637c099SIngo Molnar #ifdef CONFIG_STACKTRACE 78637c099SIngo Molnar struct stack_trace { 88637c099SIngo Molnar unsigned int nr_entries, max_entries; 98637c099SIngo Molnar unsigned long *entries; 105a1b3999SAndi Kleen int skip; /* input argument: How many entries to skip */ 118637c099SIngo Molnar }; 128637c099SIngo Molnar 13ab1b6f03SChristoph Hellwig extern void save_stack_trace(struct stack_trace *trace); 149745512cSArjan van de Ven extern void save_stack_trace_tsk(struct task_struct *tsk, 159745512cSArjan van de Ven struct stack_trace *trace); 168637c099SIngo Molnar 178637c099SIngo Molnar extern void print_stack_trace(struct stack_trace *trace, int spaces); 188637c099SIngo Molnar #else 19ab1b6f03SChristoph Hellwig # define save_stack_trace(trace) do { } while (0) 209745512cSArjan van de Ven # define save_stack_trace_tsk(tsk, trace) do { } while (0) 213b5ad079SJohannes Berg # define print_stack_trace(trace, spaces) do { } while (0) 228637c099SIngo Molnar #endif 238637c099SIngo Molnar 248637c099SIngo Molnar #endif 25