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 TRACE_EVENT(ipi_send_cpu,
  39
  40         TP_PROTO(const unsigned int cpu, unsigned long callsite, void *callback),
  41
  42         TP_ARGS(cpu, callsite, callback),
  43
  44         TP_STRUCT__entry(
  45                 __field(unsigned int, cpu)
  46                 __field(void *, callsite)
  47                 __field(void *, callback)
  48         ),
  49
  50         TP_fast_assign(
  51                 __entry->cpu = cpu;
  52                 __entry->callsite = (void *)callsite;
  53                 __entry->callback = callback;
  54         ),
  55
  56         TP_printk("cpu=%u callsite=%pS callback=%pS",
  57                   __entry->cpu, __entry->callsite, __entry->callback)
  58 );
  59
  60 TRACE_EVENT(ipi_send_cpumask,
  61
  62         TP_PROTO(const struct cpumask *cpumask, unsigned long callsite, void *callback),
  63
  64         TP_ARGS(cpumask, callsite, callback),
  65
  66         TP_STRUCT__entry(
  67                 __cpumask(cpumask)
  68                 __field(void *, callsite)
  69                 __field(void *, callback)
  70         ),
  71
  72         TP_fast_assign(
  73                 __assign_cpumask(cpumask, cpumask_bits(cpumask));
  74                 __entry->callsite = (void *)callsite;
  75                 __entry->callback = callback;
  76         ),
  77
  78         TP_printk("cpumask=%s callsite=%pS callback=%pS",
  79                   __get_cpumask(cpumask), __entry->callsite, __entry->callback)
  80 );
  81
  82 DECLARE_EVENT_CLASS(ipi_handler,
  83
  84         TP_PROTO(const char *reason),
  85
  86         TP_ARGS(reason),
  87
  88         TP_STRUCT__entry(
  89                 __field(const char *, reason)
  90         ),
  91
  92         TP_fast_assign(
  93                 __entry->reason = reason;
  94         ),
  95
  96         TP_printk("(%s)", __entry->reason)
  97 );
  98
  99 /**
 100  * ipi_entry - called immediately before the IPI handler
 101  *
 102  * @reason: string identifying the IPI purpose
 103  *
 104  * It is necessary for @reason to be a static string declared with
 105  * __tracepoint_string, ideally the same as used with trace_ipi_raise
 106  * for that IPI.
 107  */
 108 DEFINE_EVENT(ipi_handler, ipi_entry,
 109
 110         TP_PROTO(const char *reason),
 111
 112         TP_ARGS(reason)
 113 );
 114
 115 /**
 116  * ipi_exit - called immediately after the IPI handler returns
 117  *
 118  * @reason: string identifying the IPI purpose
 119  *
 120  * It is necessary for @reason to be a static string declared with
 121  * __tracepoint_string, ideally the same as used with trace_ipi_raise for
 122  * that IPI.
 123  */
 124 DEFINE_EVENT(ipi_handler, ipi_exit,
 125
 126         TP_PROTO(const char *reason),
 127
 128         TP_ARGS(reason)
 129 );
 130
 131 #endif /* _TRACE_IPI_H */
 132
 133 /* This part must be outside protection */
 134 #include <trace/define_trace.h>