include/trace/events/ipi.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #undef TRACE_SYSTEM
   3 #define TRACE_SYSTEM ipi
   4
   5 #if !defined(_TRACE_IPI_H) || defined(TRACE_HEADER_MULTI_READ)
   6 #define _TRACE_IPI_H
   7
   8 #include <linux/tracepoint.h>
   9
  10 /**
  11  * ipi_raise - called when a smp cross call is made
  12  *
  13  * @mask: mask of recipient CPUs for the IPI
  14  * @reason: string identifying the IPI purpose
  15  *
  16  * It is necessary for @reason to be a static string declared with
  17  * __tracepoint_string.
  18  */
  19 TRACE_EVENT(ipi_raise,
  20
  21         TP_PROTO(const struct cpumask *mask, const char *reason),
  22
  23         TP_ARGS(mask, reason),
  24
  25         TP_STRUCT__entry(
  26                 __bitmask(target_cpus, nr_cpumask_bits)
  27                 __field(const char *, reason)
  28         ),
  29
  30         TP_fast_assign(
  31                 __assign_bitmask(target_cpus, cpumask_bits(mask), nr_cpumask_bits);
  32                 __entry->reason = reason;
  33         ),
  34
  35         TP_printk("target_mask=%s (%s)", __get_bitmask(target_cpus), __entry->reason)
  36 );
  37
  38 DECLARE_EVENT_CLASS(ipi_handler,
  39
  40         TP_PROTO(const char *reason),
  41
  42         TP_ARGS(reason),
  43
  44         TP_STRUCT__entry(
  45                 __field(const char *, reason)
  46         ),
  47
  48         TP_fast_assign(
  49                 __entry->reason = reason;
  50         ),
  51
  52         TP_printk("(%s)", __entry->reason)
  53 );
  54
  55 /**
  56  * ipi_entry - called immediately before the IPI handler
  57  *
  58  * @reason: string identifying the IPI purpose
  59  *
  60  * It is necessary for @reason to be a static string declared with
  61  * __tracepoint_string, ideally the same as used with trace_ipi_raise
  62  * for that IPI.
  63  */
  64 DEFINE_EVENT(ipi_handler, ipi_entry,
  65
  66         TP_PROTO(const char *reason),
  67
  68         TP_ARGS(reason)
  69 );
  70
  71 /**
  72  * ipi_exit - called immediately after the IPI handler returns
  73  *
  74  * @reason: string identifying the IPI purpose
  75  *
  76  * It is necessary for @reason to be a static string declared with
  77  * __tracepoint_string, ideally the same as used with trace_ipi_raise for
  78  * that IPI.
  79  */
  80 DEFINE_EVENT(ipi_handler, ipi_exit,
  81
  82         TP_PROTO(const char *reason),
  83
  84         TP_ARGS(reason)
  85 );
  86
  87 #endif /* _TRACE_IPI_H */
  88
  89 /* This part must be outside protection */
  90 #include <trace/define_trace.h>