include/linux/ftrace_irq.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LINUX_FTRACE_IRQ_H
   3 #define _LINUX_FTRACE_IRQ_H
   4
   5
   6 #ifdef CONFIG_FTRACE_NMI_ENTER
   7 extern void arch_ftrace_nmi_enter(void);
   8 extern void arch_ftrace_nmi_exit(void);
   9 #else
  10 static inline void arch_ftrace_nmi_enter(void) { }
  11 static inline void arch_ftrace_nmi_exit(void) { }
  12 #endif
  13
  14 #ifdef CONFIG_HWLAT_TRACER
  15 extern bool trace_hwlat_callback_enabled;
  16 extern void trace_hwlat_callback(bool enter);
  17 #endif
  18
  19 static inline void ftrace_nmi_enter(void)
  20 {
  21 #ifdef CONFIG_HWLAT_TRACER
  22         if (trace_hwlat_callback_enabled)
  23                 trace_hwlat_callback(true);
  24 #endif
  25         arch_ftrace_nmi_enter();
  26 }
  27
  28 static inline void ftrace_nmi_exit(void)
  29 {
  30         arch_ftrace_nmi_exit();
  31 #ifdef CONFIG_HWLAT_TRACER
  32         if (trace_hwlat_callback_enabled)
  33                 trace_hwlat_callback(false);
  34 #endif
  35 }
  36
  37 #endif /* _LINUX_FTRACE_IRQ_H */