1 /* 2 * Tracepoint definitions for s390 3 * 4 * Copyright IBM Corp. 2015 5 * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> 6 */ 7 8 #include <linux/percpu.h> 9 #define CREATE_TRACE_POINTS 10 #include <asm/trace/diag.h> 11 12 EXPORT_TRACEPOINT_SYMBOL(s390_diagnose); 13 14 static DEFINE_PER_CPU(unsigned int, diagnose_trace_depth); 15 16 void trace_s390_diagnose_norecursion(int diag_nr) 17 { 18 unsigned long flags; 19 unsigned int *depth; 20 21 local_irq_save(flags); 22 depth = this_cpu_ptr(&diagnose_trace_depth); 23 if (*depth == 0) { 24 (*depth)++; 25 trace_s390_diagnose(diag_nr); 26 (*depth)--; 27 } 28 local_irq_restore(flags); 29 } 30