include/instrumentation/events/preemptirq.h

   1 // SPDX-FileCopyrightText: 2017 Michael Jeanson <mjeanson@efficios.com>
   2 //
   3 // SPDX-License-Identifier: GPL-2.0-only
   4
   5 #ifdef CONFIG_PREEMPTIRQ_EVENTS
   6
   7 #undef TRACE_SYSTEM
   8 #define TRACE_SYSTEM preemptirq
   9
  10 #if !defined(LTTNG_TRACE_PREEMPTIRQ_H) || defined(TRACE_HEADER_MULTI_READ)
  11 #define LTTNG_TRACE_PREEMPTIRQ_H
  12
  13 #include <linux/ktime.h>
  14 #include <linux/string.h>
  15 #include <asm/sections.h>
  16 #include <lttng/tracepoint-event.h>
  17
  18 /*
  19  * The preemptirq probe is built when CONFIG_PREEMPTIRQ_EVENTS is defined.
  20  */
  21
  22 LTTNG_TRACEPOINT_EVENT_CLASS(preemptirq_template,
  23
  24         TP_PROTO(unsigned long ip, unsigned long parent_ip),
  25
  26         TP_ARGS(ip, parent_ip),
  27
  28         TP_FIELDS(
  29                 ctf_integer_hex(unsigned long, caller, ip)
  30                 ctf_integer_hex(unsigned long, parent, parent_ip)
  31         )
  32 )
  33
  34 /*
  35  * Tracing of irq enable / disable events is enabled
  36  *   on >= 4.19 when CONFIG_TRACE_IRQFLAGS is defined.
  37  *   on previous kernels when CONFIG_PROVE_LOCKING is NOT defined.
  38  */
  39 #if defined(CONFIG_TRACE_IRQFLAGS)
  40 #define LTTNG_TRACE_IRQ
  41 #elif (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(4,19,0) && \
  42         !defined(CONFIG_PROVE_LOCKING))
  43 #define LTTNG_TRACE_IRQ
  44 #endif
  45
  46 #ifdef LTTNG_TRACE_IRQ
  47 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(preemptirq_template, irq_disable,
  48
  49         preemptirq_irq_disable,
  50
  51         TP_PROTO(unsigned long ip, unsigned long parent_ip),
  52
  53         TP_ARGS(ip, parent_ip)
  54 )
  55
  56 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(preemptirq_template, irq_enable,
  57
  58         preemptirq_irq_enable,
  59
  60         TP_PROTO(unsigned long ip, unsigned long parent_ip),
  61
  62         TP_ARGS(ip, parent_ip)
  63 )
  64 #endif /* LTTNG_TRACE_IRQ */
  65
  66 /*
  67  * Tracing of preempt enable / disable events is enabled
  68  *   on >= 4.19 when CONFIG_TRACE_PREEMPT_TOGGLE is defined.
  69  *   on previous kernels when CONFIG_DEBUG_PREEMPT is defined.
  70  */
  71 #if defined(CONFIG_TRACE_PREEMPT_TOGGLE)
  72 #define LTTNG_TRACE_PREEMPT
  73 #elif (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(4,19,0) && \
  74         defined(CONFIG_DEBUG_PREEMPT))
  75 #define LTTNG_TRACE_PREEMPT
  76 #endif
  77
  78 #ifdef LTTNG_TRACE_PREEMPT
  79 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(preemptirq_template, preempt_disable,
  80
  81         preemptirq_preempt_disable,
  82
  83         TP_PROTO(unsigned long ip, unsigned long parent_ip),
  84
  85         TP_ARGS(ip, parent_ip)
  86 )
  87
  88 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(preemptirq_template, preempt_enable,
  89
  90         preemptirq_preempt_enable,
  91
  92         TP_PROTO(unsigned long ip, unsigned long parent_ip),
  93
  94         TP_ARGS(ip, parent_ip)
  95 )
  96 #endif /* LTTNG_TRACE_PREEMPT */
  97
  98 #endif /* LTTNG_TRACE_PREEMPTIRQ_H */
  99
 100 /* This part must be outside protection */
 101 #include <lttng/define_trace.h>
 102
 103 #endif /* CONFIG_PREEMPTIRQ_EVENTS */