include/instrumentation/events/lttng-module/preemptirq.h

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