14 7 `g_I|Mdv &K Index of /FSS-OZR/root/proc/self/cwd/sys/class/tty/ttyS0/subsystem/tty60

Index of /FSS-OZR/root/proc/self/cwd/sys/class/tty/ttyS0/subsystem/tty60

 NameLast modifiedSizeDescription
 Parent Directory   -  
 dev 2026-10-11 03:10 4.0K 
 power/ 2026-10-11 03:07 -  
 subsystem/ 2026-10-10 23:05 -  
 uevent 2026-10-11 03:10 4.0K 
_I|Mjq؂File not found. *l4( (  fB- h@w_I|+o/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _TOOLS_LINUX_REFCOUNT_H #define _TOOLS_LINUX_REFCOUNT_H /* * Variant of atomic_t specialized for reference counts. * * The interface matches the atomic_t interface (to aid in porting) but only * provides the few functions one should use for reference counting. * * It differs in that the counter saturates at UINT_MAX and will not move once * there. This avoids wrapping the counter and causing 'spurious' * use-after-free issues. * * Memory ordering rules are slightly relaxed wrt regular atomic_t functions * and provide only what is strictly required for refcounts. * * The increments are fully relaxed; these will not provide ordering. The * rationale is that whatever is used to obtain the object we're increasing the * reference count on will provide the ordering. For locked data structures, * its the lock acquire, for RCU/lockless data structures its the dependent * load. * * Do note that inc_not_zero() provides a control dependency which will order * future stores against the inc, this ensures we'll never modify the object * if we did not in fact acquire a reference. * * The decrements will provide release order, such that all the prior loads and * stores will be issued before, it also provides a control dependency, which * will order us against the subsequent free(). * * The control dependency is against the load of the cmpxchg (ll/sc) that * succeeded. This means the stores aren't fully ordered, but this is fine * because the 1->0 transition indicates no concurrency. * * Note that the allocator is responsible for ordering things between free() * and alloc(). * */ #include #include #ifdef NDEBUG #define REFCOUNT_WARN(cond, str) (void)(cond) #define __refcount_check #else #define REFCOUNT_WARN(cond, str) BUG_ON(cond) #define __refcount_check __must_check #endif typedef struct refcount_struct { atomic_t refs; } refcount_t; #define REFCOUNT_INIT(n) { .refs = ATOMIC_INIT(n), } static inline void refcount_set(refcount_t *r, unsigned int n) { atomic_set(&r->refs, n); } static inline unsigned int refcount_read(const refcount_t *r) { return atomic_read(&r->refs); } /* * Similar to atomic_inc_not_zero(), will saturate at UINT_MAX and WARN. * * Provides no memory ordering, it is assumed the caller has guaranteed the * object memory to be sta