X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=instrumentation%2Fevents%2Flttng-module%2Fsched.h;h=20890ac036c9c3e4b119353cd2eeada98831f6c1;hb=369708f464bedc0682151df9308cebfa14dbdb2b;hp=e6f36b115d6489e20e295621bcb9cbe011ff0d6a;hpb=262ab18947d8568ef6357d5bfd84d11537cb4b9f;p=lttng-modules.git diff --git a/instrumentation/events/lttng-module/sched.h b/instrumentation/events/lttng-module/sched.h index e6f36b11..20890ac0 100644 --- a/instrumentation/events/lttng-module/sched.h +++ b/instrumentation/events/lttng-module/sched.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ #undef TRACE_SYSTEM #define TRACE_SYSTEM sched @@ -8,111 +9,64 @@ #include #include #include -#include -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) #include -#endif - -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0)) -#define lttng_proc_inum ns.inum -#else -#define lttng_proc_inum proc_inum -#endif #define LTTNG_MAX_PID_NS_LEVEL 32 #ifndef _TRACE_SCHED_DEF_ #define _TRACE_SCHED_DEF_ -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0)) - static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p) { -#ifdef CONFIG_SCHED_DEBUG - BUG_ON(p != current); -#endif /* CONFIG_SCHED_DEBUG */ - /* - * Preemption ignores task state, therefore preempted tasks are always RUNNING - * (we will not have dequeued if state != RUNNING). - */ - return preempt ? TASK_RUNNING | TASK_STATE_MAX : p->state; -} - -#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0)) - -static inline long __trace_sched_switch_state(struct task_struct *p) -{ - long state = p->state; + unsigned int state; -#ifdef CONFIG_PREEMPT #ifdef CONFIG_SCHED_DEBUG - BUG_ON(p != current); + BUG_ON(p != current); #endif /* CONFIG_SCHED_DEBUG */ - /* - * For all intents and purposes a preempted task is a running task. - */ - if (preempt_count() & PREEMPT_ACTIVE) - state = TASK_RUNNING | TASK_STATE_MAX; -#endif /* CONFIG_PREEMPT */ - - return state; -} - -#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0)) - -static inline long __trace_sched_switch_state(struct task_struct *p) -{ - long state = p->state; - -#ifdef CONFIG_PREEMPT - /* - * For all intents and purposes a preempted task is a running task. - */ - if (task_preempt_count(p) & PREEMPT_ACTIVE) - state = TASK_RUNNING | TASK_STATE_MAX; -#endif - - return state; -} - -#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)) - -static inline long __trace_sched_switch_state(struct task_struct *p) -{ - long state = p->state; - -#ifdef CONFIG_PREEMPT - /* - * For all intents and purposes a preempted task is a running task. - */ - if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE) - state = TASK_RUNNING | TASK_STATE_MAX; -#endif - - return state; -} - -#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) - -static inline long __trace_sched_switch_state(struct task_struct *p) -{ - long state = p->state; - -#ifdef CONFIG_PREEMPT - /* - * For all intents and purposes a preempted task is a running task. - */ - if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE) - state = TASK_RUNNING; -#endif - return state; + /* + * Preemption ignores task state, therefore preempted tasks are always + * RUNNING (we will not have dequeued if state != RUNNING). + */ + if (preempt) + return TASK_REPORT_MAX; + + /* + * task_state_index() uses fls() and returns a value from 0-8 range. + * Decrement it by 1 (except TASK_RUNNING state i.e 0) before using + * it for left shift operation to get the correct task->state + * mapping. + */ + state = task_state_index(p); + + return state ? (1 << (state - 1)) : state; } -#endif - #endif /* _TRACE_SCHED_DEF_ */ +/* + * Enumeration of the task state bitmask. + * Only bit flags are enumerated here, not composition of states. + */ +LTTNG_TRACEPOINT_ENUM(task_state, + TP_ENUM_VALUES( + ctf_enum_value("TASK_RUNNING", TASK_RUNNING) + ctf_enum_value("TASK_INTERRUPTIBLE", TASK_INTERRUPTIBLE) + ctf_enum_value("TASK_UNINTERRUPTIBLE", TASK_UNINTERRUPTIBLE) + ctf_enum_value("TASK_STOPPED", __TASK_STOPPED) + ctf_enum_value("TASK_TRACED", __TASK_TRACED) + ctf_enum_value("EXIT_DEAD", EXIT_DEAD) + ctf_enum_value("EXIT_ZOMBIE", EXIT_ZOMBIE) + ctf_enum_value("TASK_PARKED", TASK_PARKED) + ctf_enum_value("TASK_DEAD", TASK_DEAD) + ctf_enum_value("TASK_WAKEKILL", TASK_WAKEKILL) + ctf_enum_value("TASK_WAKING", TASK_WAKING) + ctf_enum_value("TASK_NOLOAD", TASK_NOLOAD) + ctf_enum_value("TASK_NEW", TASK_NEW) + ctf_enum_value("TASK_STATE_MAX", TASK_STATE_MAX) + ) +) + /* * Tracepoint for calling kthread_stop, performed to end a kthread: */ @@ -145,8 +99,6 @@ LTTNG_TRACEPOINT_EVENT(sched_kthread_stop_ret, /* * Tracepoint for waking up a task: */ -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0) || \ - LTTNG_RT_KERNEL_RANGE(4,1,10,11, 4,2,0,0)) LTTNG_TRACEPOINT_EVENT_CLASS(sched_wakeup_template, TP_PROTO(struct task_struct *p), @@ -160,33 +112,6 @@ LTTNG_TRACEPOINT_EVENT_CLASS(sched_wakeup_template, ctf_integer(int, target_cpu, task_cpu(p)) ) ) -#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */ -LTTNG_TRACEPOINT_EVENT_CLASS(sched_wakeup_template, - -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) - TP_PROTO(struct task_struct *p, int success), - - TP_ARGS(p, success), -#else - TP_PROTO(struct rq *rq, struct task_struct *p, int success), - - TP_ARGS(rq, p, success), -#endif - - TP_FIELDS( - ctf_array_text(char, comm, p->comm, TASK_COMM_LEN) - ctf_integer(pid_t, tid, p->pid) - ctf_integer(int, prio, p->prio - MAX_RT_PRIO) - ctf_integer(int, success, success) -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)) - ctf_integer(int, target_cpu, task_cpu(p)) -#endif - ) -) -#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */ - -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0) || \ - LTTNG_RT_KERNEL_RANGE(4,1,10,11, 4,2,0,0)) /* * Tracepoint called when waking a task; this tracepoint is guaranteed to be @@ -211,68 +136,22 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup_new, TP_PROTO(struct task_struct *p), TP_ARGS(p)) -#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) - -LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup, - TP_PROTO(struct task_struct *p, int success), - TP_ARGS(p, success)) - -/* - * Tracepoint for waking up a new task: - */ -LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup_new, - TP_PROTO(struct task_struct *p, int success), - TP_ARGS(p, success)) - -#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */ - -LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup, - TP_PROTO(struct rq *rq, struct task_struct *p, int success), - TP_ARGS(rq, p, success)) - -/* - * Tracepoint for waking up a new task: - */ -LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup_new, - TP_PROTO(struct rq *rq, struct task_struct *p, int success), - TP_ARGS(rq, p, success)) - -#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */ - /* * Tracepoint for task switches, performed by the scheduler: */ LTTNG_TRACEPOINT_EVENT(sched_switch, -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0)) TP_PROTO(bool preempt, struct task_struct *prev, struct task_struct *next), TP_ARGS(preempt, prev, next), -#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) - TP_PROTO(struct task_struct *prev, - struct task_struct *next), - - TP_ARGS(prev, next), -#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */ - TP_PROTO(struct rq *rq, struct task_struct *prev, - struct task_struct *next), - - TP_ARGS(rq, prev, next), -#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */ TP_FIELDS( ctf_array_text(char, prev_comm, prev->comm, TASK_COMM_LEN) ctf_integer(pid_t, prev_tid, prev->pid) ctf_integer(int, prev_prio, prev->prio - MAX_RT_PRIO) -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0)) - ctf_integer(long, prev_state, __trace_sched_switch_state(preempt, prev)) -#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) - ctf_integer(long, prev_state, __trace_sched_switch_state(prev)) -#else - ctf_integer(long, prev_state, prev->state) -#endif + ctf_enum(task_state, long, prev_state, __trace_sched_switch_state(preempt, prev)) ctf_array_text(char, next_comm, next->comm, TASK_COMM_LEN) ctf_integer(pid_t, next_tid, next->pid) ctf_integer(int, next_prio, next->prio - MAX_RT_PRIO) @@ -328,15 +207,9 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_process_exit, /* * Tracepoint for waiting on task to unschedule: */ -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_wait_task, TP_PROTO(struct task_struct *p), TP_ARGS(p)) -#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */ -LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_wait_task, - TP_PROTO(struct rq *rq, struct task_struct *p), - TP_ARGS(rq, p)) -#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */ /* * Tracepoint for a waiting task: @@ -391,7 +264,6 @@ LTTNG_TRACEPOINT_EVENT_CODE(sched_process_fork, ctf_array_text(char, parent_comm, parent->comm, TASK_COMM_LEN) ctf_integer(pid_t, parent_tid, parent->pid) ctf_integer(pid_t, parent_pid, parent->tgid) -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) ctf_integer(unsigned int, parent_ns_inum, ({ unsigned int parent_ns_inum = 0; @@ -402,16 +274,14 @@ LTTNG_TRACEPOINT_EVENT_CODE(sched_process_fork, pid_ns = task_active_pid_ns(parent); if (pid_ns) parent_ns_inum = - pid_ns->lttng_proc_inum; + pid_ns->ns.inum; } parent_ns_inum; })) -#endif ctf_array_text(char, child_comm, child->comm, TASK_COMM_LEN) ctf_integer(pid_t, child_tid, child->pid) ctf_sequence(pid_t, vtids, tp_locvar->vtids, u8, tp_locvar->ns_level) ctf_integer(pid_t, child_pid, child->tgid) -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) ctf_integer(unsigned int, child_ns_inum, ({ unsigned int child_ns_inum = 0; @@ -422,35 +292,15 @@ LTTNG_TRACEPOINT_EVENT_CODE(sched_process_fork, pid_ns = task_active_pid_ns(child); if (pid_ns) child_ns_inum = - pid_ns->lttng_proc_inum; + pid_ns->ns.inum; } child_ns_inum; })) -#endif ), TP_code_post() ) -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)) -/* - * Tracepoint for sending a signal: - */ -LTTNG_TRACEPOINT_EVENT(sched_signal_send, - - TP_PROTO(int sig, struct task_struct *p), - - TP_ARGS(sig, p), - - TP_FIELDS( - ctf_integer(int, sig, sig) - ctf_array_text(char, comm, p->comm, TASK_COMM_LEN) - ctf_integer(pid_t, tid, p->pid) - ) -) -#endif - -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0)) /* * Tracepoint for exec: */ @@ -467,9 +317,7 @@ LTTNG_TRACEPOINT_EVENT(sched_process_exec, ctf_integer(pid_t, old_tid, old_pid) ) ) -#endif -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)) /* * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE * adding sched_stat support to SCHED_FIFO/RR would be welcome. @@ -512,14 +360,12 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_iowait, TP_PROTO(struct task_struct *tsk, u64 delay), TP_ARGS(tsk, delay)) -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0)) /* * Tracepoint for accounting blocked time (time the task is in uninterruptible). */ LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_blocked, TP_PROTO(struct task_struct *tsk, u64 delay), TP_ARGS(tsk, delay)) -#endif /* * Tracepoint for accounting runtime (time the task is executing @@ -538,10 +384,7 @@ LTTNG_TRACEPOINT_EVENT(sched_stat_runtime, ctf_integer(u64, vruntime, vruntime) ) ) -#endif -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0) || \ - LTTNG_RT_KERNEL_RANGE(4,9,27,18, 4,10,0,0)) /* * Tracepoint for showing priority inheritance modifying a tasks * priority. @@ -559,25 +402,6 @@ LTTNG_TRACEPOINT_EVENT(sched_pi_setprio, ctf_integer(int, newprio, pi_task ? pi_task->prio - MAX_RT_PRIO : tsk->prio - MAX_RT_PRIO) ) ) -#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) -/* - * Tracepoint for showing priority inheritance modifying a tasks - * priority. - */ -LTTNG_TRACEPOINT_EVENT(sched_pi_setprio, - - TP_PROTO(struct task_struct *tsk, int newprio), - - TP_ARGS(tsk, newprio), - - TP_FIELDS( - ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN) - ctf_integer(pid_t, tid, tsk->pid) - ctf_integer(int, oldprio, tsk->prio - MAX_RT_PRIO) - ctf_integer(int, newprio, newprio - MAX_RT_PRIO) - ) -) -#endif #endif /* LTTNG_TRACE_SCHED_H */