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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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e54d02b23c
time_t is not y2038 safe. Replace all uses of time_t by y2038 safe time64_t. Similarly, replace the calls to get_seconds() with y2038 safe ktime_get_real_seconds(). Note that this preserves fast access on 64 bit systems, but 32 bit systems need sequence counters. The syscall interface themselves are not changed as part of the patch. They will be part of a different series. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
#ifndef _LINUX_SEM_H
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#define _LINUX_SEM_H
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#include <linux/atomic.h>
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#include <linux/rcupdate.h>
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#include <linux/cache.h>
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#include <linux/time64.h>
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#include <uapi/linux/sem.h>
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struct task_struct;
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/* One semaphore structure for each semaphore in the system. */
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struct sem {
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int semval; /* current value */
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/*
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* PID of the process that last modified the semaphore. For
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* Linux, specifically these are:
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* - semop
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* - semctl, via SETVAL and SETALL.
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* - at task exit when performing undo adjustments (see exit_sem).
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*/
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int sempid;
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spinlock_t lock; /* spinlock for fine-grained semtimedop */
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struct list_head pending_alter; /* pending single-sop operations */
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/* that alter the semaphore */
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struct list_head pending_const; /* pending single-sop operations */
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/* that do not alter the semaphore*/
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time_t sem_otime; /* candidate for sem_otime */
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} ____cacheline_aligned_in_smp;
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/* One sem_array data structure for each set of semaphores in the system. */
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struct sem_array {
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struct kern_ipc_perm sem_perm; /* permissions .. see ipc.h */
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time64_t sem_ctime; /* create/last semctl() time */
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struct list_head pending_alter; /* pending operations */
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/* that alter the array */
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struct list_head pending_const; /* pending complex operations */
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/* that do not alter semvals */
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struct list_head list_id; /* undo requests on this array */
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int sem_nsems; /* no. of semaphores in array */
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int complex_count; /* pending complex operations */
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unsigned int use_global_lock;/* >0: global lock required */
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struct sem sems[];
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};
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#ifdef CONFIG_SYSVIPC
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struct sysv_sem {
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struct sem_undo_list *undo_list;
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};
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extern int copy_semundo(unsigned long clone_flags, struct task_struct *tsk);
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extern void exit_sem(struct task_struct *tsk);
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#else
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struct sysv_sem {
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/* empty */
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};
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static inline int copy_semundo(unsigned long clone_flags, struct task_struct *tsk)
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{
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return 0;
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}
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static inline void exit_sem(struct task_struct *tsk)
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{
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return;
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}
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#endif
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#endif /* _LINUX_SEM_H */
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