+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-only */
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM signal
-
-#if !defined(LTTNG_TRACE_SIGNAL_H) || defined(TRACE_HEADER_MULTI_READ)
-#define LTTNG_TRACE_SIGNAL_H
-
-#include <lttng/tracepoint-event.h>
-#include <linux/version.h>
-
-#ifndef _TRACE_SIGNAL_DEF
-#define _TRACE_SIGNAL_DEF
-#include <linux/signal.h>
-#include <linux/sched.h>
-#undef LTTNG_FIELDS_SIGINFO
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,20,0) || \
- LTTNG_RHEL_KERNEL_RANGE(4,18,0,147,0,0, 4,19,0,0,0,0))
-#define LTTNG_FIELDS_SIGINFO(info) \
- ctf_integer(int, errno, \
- (info == SEND_SIG_NOINFO || info == SEND_SIG_PRIV) ? \
- 0 : \
- info->si_errno) \
- ctf_integer(int, code, \
- (info == SEND_SIG_NOINFO) ? \
- SI_USER : \
- ((info == SEND_SIG_PRIV) ? SI_KERNEL : info->si_code))
-#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(4,20,0) */
-#define LTTNG_FIELDS_SIGINFO(info) \
- ctf_integer(int, errno, \
- (info == SEND_SIG_NOINFO || info == SEND_SIG_FORCED || info == SEND_SIG_PRIV) ? \
- 0 : \
- info->si_errno) \
- ctf_integer(int, code, \
- (info == SEND_SIG_NOINFO || info == SEND_SIG_FORCED) ? \
- SI_USER : \
- ((info == SEND_SIG_PRIV) ? SI_KERNEL : info->si_code))
-#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4,20,0) */
-#endif /* _TRACE_SIGNAL_DEF */
-
-/**
- * signal_generate - called when a signal is generated
- * @sig: signal number
- * @info: pointer to struct siginfo
- * @task: pointer to struct task_struct
- *
- * Current process sends a 'sig' signal to 'task' process with
- * 'info' siginfo. If 'info' is SEND_SIG_NOINFO or SEND_SIG_PRIV,
- * 'info' is not a pointer and you can't access its field. Instead,
- * SEND_SIG_NOINFO means that si_code is SI_USER, and SEND_SIG_PRIV
- * means that si_code is SI_KERNEL.
- */
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,20,0) || \
- LTTNG_RHEL_KERNEL_RANGE(4,18,0,147,0,0, 4,19,0,0,0,0))
-LTTNG_TRACEPOINT_EVENT(signal_generate,
-
- TP_PROTO(int sig, struct kernel_siginfo *info, struct task_struct *task,
- int group, int result),
-
- TP_ARGS(sig, info, task, group, result),
-
- TP_FIELDS(
- ctf_integer(int, sig, sig)
- LTTNG_FIELDS_SIGINFO(info)
- ctf_array_text(char, comm, task->comm, TASK_COMM_LEN)
- ctf_integer(pid_t, pid, task->pid)
- ctf_integer(int, group, group)
- ctf_integer(int, result, result)
- )
-)
-#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
-LTTNG_TRACEPOINT_EVENT(signal_generate,
-
- TP_PROTO(int sig, struct siginfo *info, struct task_struct *task,
- int group, int result),
-
- TP_ARGS(sig, info, task, group, result),
-
- TP_FIELDS(
- ctf_integer(int, sig, sig)
- LTTNG_FIELDS_SIGINFO(info)
- ctf_array_text(char, comm, task->comm, TASK_COMM_LEN)
- ctf_integer(pid_t, pid, task->pid)
- ctf_integer(int, group, group)
- ctf_integer(int, result, result)
- )
-)
-#else
-LTTNG_TRACEPOINT_EVENT(signal_generate,
-
- TP_PROTO(int sig, struct siginfo *info, struct task_struct *task),
-
- TP_ARGS(sig, info, task),
-
- TP_FIELDS(
- ctf_integer(int, sig, sig)
- LTTNG_FIELDS_SIGINFO(info)
- ctf_array_text(char, comm, task->comm, TASK_COMM_LEN)
- ctf_integer(pid_t, pid, task->pid)
- )
-)
-#endif
-
-/**
- * signal_deliver - called when a signal is delivered
- * @sig: signal number
- * @info: pointer to struct siginfo
- * @ka: pointer to struct k_sigaction
- *
- * A 'sig' signal is delivered to current process with 'info' siginfo,
- * and it will be handled by 'ka'. ka->sa.sa_handler can be SIG_IGN or
- * SIG_DFL.
- * Note that some signals reported by signal_generate tracepoint can be
- * lost, ignored or modified (by debugger) before hitting this tracepoint.
- * This means, this can show which signals are actually delivered, but
- * matching generated signals and delivered signals may not be correct.
- */
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,20,0) || \
- LTTNG_RHEL_KERNEL_RANGE(4,18,0,147,0,0, 4,19,0,0,0,0))
-LTTNG_TRACEPOINT_EVENT(signal_deliver,
-
- TP_PROTO(int sig, struct kernel_siginfo *info, struct k_sigaction *ka),
-
- TP_ARGS(sig, info, ka),
-
- TP_FIELDS(
- ctf_integer(int, sig, sig)
- LTTNG_FIELDS_SIGINFO(info)
- ctf_integer(unsigned long, sa_handler, (unsigned long) ka->sa.sa_handler)
- ctf_integer(unsigned long, sa_flags, ka->sa.sa_flags)
- )
-)
-#else
-LTTNG_TRACEPOINT_EVENT(signal_deliver,
-
- TP_PROTO(int sig, struct siginfo *info, struct k_sigaction *ka),
-
- TP_ARGS(sig, info, ka),
-
- TP_FIELDS(
- ctf_integer(int, sig, sig)
- LTTNG_FIELDS_SIGINFO(info)
- ctf_integer(unsigned long, sa_handler, (unsigned long) ka->sa.sa_handler)
- ctf_integer(unsigned long, sa_flags, ka->sa.sa_flags)
- )
-)
-#endif
-
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0))
-LTTNG_TRACEPOINT_EVENT_CLASS(signal_queue_overflow,
-
- TP_PROTO(int sig, int group, struct siginfo *info),
-
- TP_ARGS(sig, group, info),
-
- TP_FIELDS(
- ctf_integer(int, sig, sig)
- ctf_integer(int, group, group)
- LTTNG_FIELDS_SIGINFO(info)
- )
-)
-
-/**
- * signal_overflow_fail - called when signal queue is overflow
- * @sig: signal number
- * @group: signal to process group or not (bool)
- * @info: pointer to struct siginfo
- *
- * Kernel fails to generate 'sig' signal with 'info' siginfo, because
- * siginfo queue is overflow, and the signal is dropped.
- * 'group' is not 0 if the signal will be sent to a process group.
- * 'sig' is always one of RT signals.
- */
-LTTNG_TRACEPOINT_EVENT_INSTANCE(signal_queue_overflow, signal_overflow_fail,
-
- TP_PROTO(int sig, int group, struct siginfo *info),
-
- TP_ARGS(sig, group, info)
-)
-
-/**
- * signal_lose_info - called when siginfo is lost
- * @sig: signal number
- * @group: signal to process group or not (bool)
- * @info: pointer to struct siginfo
- *
- * Kernel generates 'sig' signal but loses 'info' siginfo, because siginfo
- * queue is overflow.
- * 'group' is not 0 if the signal will be sent to a process group.
- * 'sig' is always one of non-RT signals.
- */
-LTTNG_TRACEPOINT_EVENT_INSTANCE(signal_queue_overflow, signal_lose_info,
-
- TP_PROTO(int sig, int group, struct siginfo *info),
-
- TP_ARGS(sig, group, info)
-)
-#endif
-
-#endif /* LTTNG_TRACE_SIGNAL_H */
-
-/* This part must be outside protection */
-#include <lttng/define_trace.h>
projects / lttng-modules.git / blobdiff