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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139/* SPDX-License-Identifier: GPL-2.0+ *//* * Common functions for in-kernel torture tests. * * Copyright IBM Corporation, 2014 * * Author: Paul E. McKenney <paulmck@linux.ibm.com> */
#ifndef __LINUX_TORTURE_H#define __LINUX_TORTURE_H
#include <linux/types.h>#include <linux/cache.h>#include <linux/spinlock.h>#include <linux/threads.h>#include <linux/cpumask_types.h>#include <linux/seqlock.h>#include <linux/lockdep.h>#include <linux/completion.h>#include <linux/debugobjects.h>#include <linux/bug.h>#include <linux/compiler.h>#include <linux/hrtimer.h>
/* Definitions for a non-string torture-test module parameter. */#define torture_param(type, name, init, msg) \ static type name = init; \ module_param(name, type, 0444); \ MODULE_PARM_DESC(name, msg);
#define TORTURE_FLAG "-torture:"#define TOROUT_STRING(s) \ pr_alert("%s" TORTURE_FLAG " %s\n", torture_type, s)#define VERBOSE_TOROUT_STRING(s) \do { \ if (verbose) { \ verbose_torout_sleep(); \ pr_alert("%s" TORTURE_FLAG " %s\n", torture_type, s); \ } \} while (0)#define TOROUT_ERRSTRING(s) \ pr_alert("%s" TORTURE_FLAG "!!! %s\n", torture_type, s)void verbose_torout_sleep(void);
#define torture_init_error(firsterr) \({ \ int ___firsterr = (firsterr); \ \ WARN_ONCE(!IS_MODULE(CONFIG_RCU_TORTURE_TEST) && ___firsterr < 0, "Torture-test initialization failed with error code %d\n", ___firsterr); \ ___firsterr < 0; \})
/* Definitions for online/offline exerciser. */#ifdef CONFIG_HOTPLUG_CPUint torture_num_online_cpus(void);#else /* #ifdef CONFIG_HOTPLUG_CPU */static inline int torture_num_online_cpus(void) { return 1; }#endif /* #else #ifdef CONFIG_HOTPLUG_CPU */typedef void torture_ofl_func(void);bool torture_offline(int cpu, long *n_onl_attempts, long *n_onl_successes, unsigned long *sum_offl, int *min_onl, int *max_onl);bool torture_online(int cpu, long *n_onl_attempts, long *n_onl_successes, unsigned long *sum_onl, int *min_onl, int *max_onl);int torture_onoff_init(long ooholdoff, long oointerval, torture_ofl_func *f);void torture_onoff_stats(void);bool torture_onoff_failures(void);
/* Low-rider random number generator. */struct torture_random_state { unsigned long trs_state; long trs_count;};#define DEFINE_TORTURE_RANDOM(name) struct torture_random_state name = { 0, 0 }#define DEFINE_TORTURE_RANDOM_PERCPU(name) \ DEFINE_PER_CPU(struct torture_random_state, name)unsigned long torture_random(struct torture_random_state *trsp);static inline void torture_random_init(struct torture_random_state *trsp){ trsp->trs_state = 0; trsp->trs_count = 0;}
/* Definitions for high-resolution-timer sleeps. */int torture_hrtimeout_ns(ktime_t baset_ns, u32 fuzzt_ns, const enum hrtimer_mode mode, struct torture_random_state *trsp);int torture_hrtimeout_us(u32 baset_us, u32 fuzzt_ns, struct torture_random_state *trsp);int torture_hrtimeout_ms(u32 baset_ms, u32 fuzzt_us, struct torture_random_state *trsp);int torture_hrtimeout_jiffies(u32 baset_j, struct torture_random_state *trsp);int torture_hrtimeout_s(u32 baset_s, u32 fuzzt_ms, struct torture_random_state *trsp);
/* Task shuffler, which causes CPUs to occasionally go idle. */void torture_shuffle_task_register(struct task_struct *tp);int torture_shuffle_init(long shuffint);
/* Test auto-shutdown handling. */void torture_shutdown_absorb(const char *title);int torture_shutdown_init(int ssecs, void (*cleanup)(void));
/* Task stuttering, which forces load/no-load transitions. */bool stutter_wait(const char *title);int torture_stutter_init(int s, int sgap);
/* Initialization and cleanup. */bool torture_init_begin(char *ttype, int v);void torture_init_end(void);unsigned long get_torture_init_jiffies(void);bool torture_cleanup_begin(void);void torture_cleanup_end(void);bool torture_must_stop(void);bool torture_must_stop_irq(void);void torture_kthread_stopping(char *title);int _torture_create_kthread(int (*fn)(void *arg), void *arg, char *s, char *m, char *f, struct task_struct **tp, void (*cbf)(struct task_struct *tp));void _torture_stop_kthread(char *m, struct task_struct **tp);
#define torture_create_kthread(n, arg, tp) \ _torture_create_kthread(n, (arg), #n, "Creating " #n " task", \ "Failed to create " #n, &(tp), NULL)#define torture_create_kthread_cb(n, arg, tp, cbf) \ _torture_create_kthread(n, (arg), #n, "Creating " #n " task", \ "Failed to create " #n, &(tp), cbf)#define torture_stop_kthread(n, tp) \ _torture_stop_kthread("Stopping " #n " task", &(tp))
/* Scheduler-related definitions. */#ifdef CONFIG_PREEMPTION#define torture_preempt_schedule() __preempt_schedule()#else#define torture_preempt_schedule() do { } while (0)#endifvoid torture_sched_set_normal(struct task_struct *t, int nice);
#if IS_ENABLED(CONFIG_RCU_TORTURE_TEST) || IS_MODULE(CONFIG_RCU_TORTURE_TEST) || IS_ENABLED(CONFIG_LOCK_TORTURE_TEST) || IS_MODULE(CONFIG_LOCK_TORTURE_TEST)long torture_sched_setaffinity(pid_t pid, const struct cpumask *in_mask, bool dowarn);#endif
#endif /* __LINUX_TORTURE_H */