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/linux/Documentation/i2c/
H A Di2c-topology.rst40 mux-locked or parent-locked muxes.
43 Mux-locked muxes
46 Mux-locked muxes does not lock the entire parent adapter during the
48 adapter are locked. Mux-locked muxes are mostly interesting if the
50 their tasks. Since the parent adapter is not fully locked during the
55 Mux-locked Example
62 | root |--+--| locked | '--------'
87 Mux-locked caveats
90 When using a mux-locked mux, be aware of the following restrictions:
93 If you build a topology with a mux-locked mux being the parent
[all …]
/linux/kernel/locking/
H A Dqspinlock_paravirt.h92 try_cmpxchg_acquire(&lock->locked, &old, _Q_LOCKED_VAL)) { in pv_hybrid_queued_unfair_trylock()
124 return !READ_ONCE(lock->locked) && in trylock_clear_pending()
299 if (READ_ONCE(node->locked)) in pv_wait_node()
319 if (!READ_ONCE(node->locked)) { in pv_wait_node()
340 !READ_ONCE(node->locked)); in pv_wait_node()
387 WRITE_ONCE(lock->locked, _Q_SLOW_VAL); in pv_kick_node()
452 if (xchg(&lock->locked, _Q_SLOW_VAL) == 0) { in pv_wait_head_or_lock()
458 WRITE_ONCE(lock->locked, _Q_LOCKED_VAL); in pv_wait_head_or_lock()
466 pv_wait(&lock->locked, _Q_SLOW_VAL); in pv_wait_head_or_lock()
499 __pv_queued_spin_unlock_slowpath(struct qspinlock *lock, u8 locked) in __pv_queued_spin_unlock_slowpath() argument
[all …]
H A Dmcs_spinlock.h53 * on this node->locked until the previous lock holder sets the node->locked
62 node->locked = 0;
74 * Lock acquired, don't need to set node->locked to 1. Threads in mcs_spin_lock()
75 * only spin on its own node->locked value for lock acquisition. in mcs_spin_lock()
77 * and does not proceed to spin on its own node->locked, this in mcs_spin_lock()
79 * audit lock status, then set node->locked value here. in mcs_spin_lock()
86 arch_mcs_spin_lock_contended(&node->locked); in mcs_spin_lock()
110 arch_mcs_spin_unlock_contended(&next->locked); in mcs_spin_unlock()
20 int locked; /* 1 if lock acquired */ global() member
H A Dqspinlock.c48 * unlock the next pending (next->locked), we compress both these: {tail,
49 * next->locked} into a single u32 value.
145 * Wait for in-progress pending->locked hand-overs with a bounded
191 * store-release that clears the locked bit and create lock
197 smp_cond_load_acquire(&lock->locked, !VAL); in clear_pending()
251 node->locked = 0;
291 arch_mcs_spin_lock_contended(&node->locked);
311 * store-release that clears the locked bit and create lock
318 * been designated yet, there is no way for the locked value to become in queued_spin_lock_slowpath()
326 goto locked; in queued_spin_lock_slowpath()
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/linux/tools/testing/selftests/net/forwarding/
H A Dbridge_locked_port.sh102 bridge link set dev $swp1 locked on
112 bridge link set dev $swp1 locked off
133 bridge link set dev $swp1 locked on
142 bridge link set dev $swp1 locked off
161 bridge link set dev $swp1 locked on
170 bridge link set dev $swp1 locked off
187 bridge link set dev $swp1 learning on locked on
195 bridge link set dev $swp1 learning on locked on mab on
212 bridge link set dev $swp1 learning off locked off mab off
226 bridge link set dev $swp1 learning on locked on mab on
[all …]
/linux/scripts/coccinelle/locks/
H A Ddouble_lock.cocci17 @locked@
42 position p1 != locked.p1;
43 position locked.p;
45 expression x <= locked.E1;
46 expression E,locked.E1;
65 expression x <= locked.E1;
66 expression locked.E1;
69 position locked.p,p1,p2;
H A Dcall_kern.cocci39 @locked exists@
74 @depends on locked && patch@
81 @depends on locked && !patch@
90 p1 << locked.p1;
91 p2 << locked.p2;
101 p1 << locked.p1;
102 p2 << locked.p2;
/linux/mm/
H A Dgup.c1084 * FOLL_NOWAIT, the mmap_lock may be released. If it is, *@locked will be set
1089 int *locked) in faultin_page() argument
1134 *locked = 0; in faultin_page()
1156 *locked = 0; in faultin_page()
1309 * @locked: whether we're still with the mmap_lock held
1344 * be released. If this happens *@locked will be set to 0 on return.
1357 int *locked) in __get_user_pages() argument
1429 PTR_ERR(page) == -EMLINK, locked); in __get_user_pages()
1637 * Locking: (*locked == 1) means that the mmap_lock has already been acquired by
1639 * set (*locked
1653 __get_user_pages_locked(struct mm_struct * mm,unsigned long start,unsigned long nr_pages,struct page ** pages,int * locked,unsigned int flags) __get_user_pages_locked() argument
1814 populate_vma_page_range(struct vm_area_struct * vma,unsigned long start,unsigned long end,int * locked) populate_vma_page_range() argument
1888 faultin_page_range(struct mm_struct * mm,unsigned long start,unsigned long end,bool write,int * locked) faultin_page_range() argument
1930 int locked = 0; __mm_populate() local
1981 __get_user_pages_locked(struct mm_struct * mm,unsigned long start,unsigned long nr_pages,struct page ** pages,int * locked,unsigned int foll_flags) __get_user_pages_locked() argument
2187 get_dump_page(unsigned long addr,int * locked) get_dump_page() argument
2469 __gup_longterm_locked(struct mm_struct * mm,unsigned long start,unsigned long nr_pages,struct page ** pages,int * locked,unsigned int gup_flags) __gup_longterm_locked() argument
2500 is_valid_gup_args(struct page ** pages,int * locked,unsigned int * gup_flags_p,unsigned int to_set) is_valid_gup_args() argument
2606 get_user_pages_remote(struct mm_struct * mm,unsigned long start,unsigned long nr_pages,unsigned int gup_flags,struct page ** pages,int * locked) get_user_pages_remote() argument
2624 get_user_pages_remote(struct mm_struct * mm,unsigned long start,unsigned long nr_pages,unsigned int gup_flags,struct page ** pages,int * locked) get_user_pages_remote() argument
2647 int locked = 1; get_user_pages() local
2675 int locked = 0; get_user_pages_unlocked() local
3191 int locked = 0; gup_fast_fallback() local
3356 pin_user_pages_remote(struct mm_struct * mm,unsigned long start,unsigned long nr_pages,unsigned int gup_flags,struct page ** pages,int * locked) pin_user_pages_remote() argument
3390 int locked = 1; pin_user_pages() local
3410 int locked = 0; pin_user_pages_unlocked() local
[all...]
H A Dmlock.c614 unsigned long locked; in do_mlock() local
628 locked = len >> PAGE_SHIFT; in do_mlock()
633 locked += current->mm->locked_vm; in do_mlock()
634 if ((locked > lock_limit) && (!capable(CAP_IPC_LOCK))) { in do_mlock()
641 locked -= count_mm_mlocked_page_nr(current->mm, in do_mlock()
646 if ((locked <= lock_limit) || capable(CAP_IPC_LOCK)) in do_mlock()
793 unsigned long lock_limit, locked; in user_shm_lock() local
797 locked = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; in user_shm_lock()
802 memlock = inc_rlimit_ucounts(ucounts, UCOUNT_RLIMIT_MEMLOCK, locked); in user_shm_lock()
805 dec_rlimit_ucounts(ucounts, UCOUNT_RLIMIT_MEMLOCK, locked); in user_shm_lock()
[all …]
H A Dcompaction.c534 unsigned long flags, bool *locked, struct compact_control *cc) in compact_unlock_should_abort() argument
536 if (*locked) { in compact_unlock_should_abort()
538 *locked = false; in compact_unlock_should_abort()
566 bool locked = false; in isolate_freepages_block() local
587 &locked, cc)) in isolate_freepages_block()
615 if (!locked) { in isolate_freepages_block()
616 locked = compact_lock_irqsave(&cc->zone->lock, in isolate_freepages_block()
651 if (locked) in isolate_freepages_block()
844 struct lruvec *locked = NULL; in isolate_migratepages_block() local
915 if (locked) { in isolate_migratepages_block()
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H A Dmmap_lock.c58 bool exclusive; /* Are we exclusively locked? */ in __vma_enter_locked()
202 * locked result to avoid performance overhead, in which case we fall back to in vma_start_read()
204 * False locked result is possible if mm_lock_seq overflows or if vma gets in vma_start_read()
220 * Check before locking. A race might cause false locked result. in vma_start_read()
252 * Overflow of vm_lock_seq/mm_lock_seq might produce false locked result. in lock_vma_under_rcu()
325 * locked and we know it hasn't already been isolated. in lock_next_vma()
331 /* Check if the vma we locked is the right one. */ in lock_next_vma()
102 int locked; __vma_start_write() local
/linux/drivers/net/ethernet/intel/ice/
H A Dice_dcb_lib.h18 int ice_dcb_sw_dflt_cfg(struct ice_pf *pf, bool ets_willing, bool locked);
24 ice_pf_dcb_cfg(struct ice_pf *pf, struct ice_dcbx_cfg *new_cfg, bool locked);
26 void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked);
28 int ice_init_pf_dcb(struct ice_pf *pf, bool locked);
96 ice_init_pf_dcb(struct ice_pf *pf, bool __always_unused locked) in ice_init_pf_dcb() argument
105 bool __always_unused locked) in ice_pf_dcb_cfg() argument
134 static inline void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked) { } in ice_pf_dcb_recfg() argument
H A Dice_dcb_lib.c283 static void ice_dcb_ena_dis_vsi(struct ice_pf *pf, bool ena, bool locked) in ice_dcb_ena_dis_vsi() argument
297 ice_ena_vsi(vsi, locked); in ice_dcb_ena_dis_vsi()
299 ice_dis_vsi(vsi, locked); in ice_dcb_ena_dis_vsi()
350 int ice_pf_dcb_cfg(struct ice_pf *pf, struct ice_dcbx_cfg *new_cfg, bool locked) in ice_pf_dcb_cfg() argument
415 if (!locked) in ice_pf_dcb_cfg()
449 if (!locked) in ice_pf_dcb_cfg()
605 static int ice_dcb_init_cfg(struct ice_pf *pf, bool locked) in ice_dcb_init_cfg() argument
620 if (ice_pf_dcb_cfg(pf, newcfg, locked)) in ice_dcb_init_cfg()
634 int ice_dcb_sw_dflt_cfg(struct ice_pf *pf, bool ets_willing, bool locked) in ice_dcb_sw_dflt_cfg() argument
667 ret = ice_pf_dcb_cfg(pf, dcbcfg, locked); in ice_dcb_sw_dflt_cfg()
[all …]
/linux/drivers/media/dvb-frontends/
H A Dlgs8gxx.c295 static int lgs8gxx_is_locked(struct lgs8gxx_state *priv, u8 *locked) in lgs8gxx_is_locked() argument
308 *locked = ((t & 0x80) == 0x80) ? 1 : 0; in lgs8gxx_is_locked()
310 *locked = ((t & 0xC0) == 0xC0) ? 1 : 0; in lgs8gxx_is_locked()
315 static int lgs8gxx_wait_ca_lock(struct lgs8gxx_state *priv, u8 *locked) in lgs8gxx_wait_ca_lock() argument
331 *locked = (ret == 0) ? 1 : 0; in lgs8gxx_wait_ca_lock()
359 u8 *locked) in lgs8gxx_autolock_gi() argument
384 err = lgs8gxx_wait_ca_lock(priv, locked); in lgs8gxx_autolock_gi()
385 if (err || !(*locked)) in lgs8gxx_autolock_gi()
393 *locked = 0; in lgs8gxx_autolock_gi()
403 u8 locked = 0, tmp_gi; in lgs8gxx_auto_detect() local
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H A Datbm8830.c147 static int is_locked(struct atbm_state *priv, u8 *locked) in is_locked() argument
153 if (locked != NULL) in is_locked()
154 *locked = (status == 1); in is_locked()
261 u8 locked = 0; in atbm8830_set_fe() local
277 is_locked(priv, &locked); in atbm8830_set_fe()
278 if (locked != 0) { in atbm8830_set_fe()
329 u8 locked = 0; in atbm8830_read_status() local
335 is_locked(priv, &locked); in atbm8830_read_status()
336 if (locked) { in atbm8830_read_status()
/linux/tools/testing/selftests/bpf/progs/
H A Dbpf_arena_spin_lock.h37 u8 locked; member
52 u8 locked; member
64 int locked; member
204 WRITE_ONCE(lock->locked, _Q_LOCKED_VAL); in set_locked()
305 (void)smp_cond_load_acquire_label(&lock->locked, !VAL, release_err); in arena_spin_lock_slowpath()
345 node->locked = 0; in arena_spin_lock_slowpath()
383 (void)arch_mcs_spin_lock_contended_label(&node->locked, release_node_err); in arena_spin_lock_slowpath()
446 arch_mcs_spin_unlock_contended(&next->locked); in arena_spin_lock_slowpath()
520 smp_store_release(&lock->locked, 0); in arena_spin_unlock()
/linux/sound/core/seq/
H A Dseq_queue.c88 static struct snd_seq_queue *queue_new(int owner, int locked) in queue_new() argument
114 q->locked = locked; in queue_new()
160 struct snd_seq_queue *snd_seq_queue_alloc(int client, int locked, unsigned int info_flags) in snd_seq_queue_alloc() argument
164 q = queue_new(client, locked); in snd_seq_queue_alloc()
339 return (q->owner == client) || (!q->locked && !q->klocked); in check_access()
379 int snd_seq_queue_set_owner(int queueid, int client, int locked) in snd_seq_queue_set_owner() argument
390 q->locked = locked ? 1 : 0; in snd_seq_queue_set_owner()
675 bool locked; in snd_seq_info_queues_read() local
690 locked = q->locked; in snd_seq_info_queues_read()
696 snd_iprintf(buffer, "lock status : %s\n", locked ? "Locked" : "Free"); in snd_seq_info_queues_read()
/linux/drivers/thermal/intel/
H A Dintel_quark_dts_thermal.c100 bool locked; member
129 if (!aux_entry->locked) { in soc_dts_enable()
157 if (!aux_entry->locked) { in soc_dts_disable()
206 if (aux_entry->locked) { in update_trip_temp()
316 if (!aux_entry->locked) { in free_soc_dts()
351 aux_entry->locked = !!(out & QRK_DTS_LOCK_BIT); in alloc_soc_dts()
354 if (!aux_entry->locked) { in alloc_soc_dts()
/linux/rust/pin-init/examples/
H A Dmutex.rs71 locked: Cell<bool>, field
82 locked: Cell::new(false), in new()
94 if self.locked.get() { in lock()
97 while self.locked.get() { in lock()
107 self.locked.set(true); in lock()
135 self.mtx.locked.set(false); in drop()
/linux/drivers/watchdog/
H A Dintel_oc_wdt.c45 bool locked; member
62 if (oc_wdt->locked) in intel_oc_wdt_start()
126 oc_wdt->locked = !!(val & INTEL_OC_WDT_CTL_LCK); in intel_oc_wdt_setup()
136 if (oc_wdt->locked) { in intel_oc_wdt_setup()
153 } else if (oc_wdt->locked) { in intel_oc_wdt_setup()
/linux/Documentation/ABI/testing/
H A Dsysfs-platform-intel-pmc15 * bit 31 - global reset is locked
20 in case the register is not locked.
21 The "global reset bit" should be locked on a production
/linux/drivers/gpu/drm/i915/
H A Di915_scheduler.c130 struct i915_sched_engine *locked, in lock_sched_engine() argument
136 GEM_BUG_ON(!locked); in lock_sched_engine()
144 while (locked != (sched_engine = READ_ONCE(rq->engine)->sched_engine)) { in lock_sched_engine()
145 spin_unlock(&locked->lock); in lock_sched_engine()
148 locked = sched_engine; in lock_sched_engine()
151 GEM_BUG_ON(locked != sched_engine); in lock_sched_engine()
152 return locked; in lock_sched_engine()
/linux/drivers/gpu/drm/i915/gt/
H A Dmock_engine.c264 struct intel_engine_cs *engine, *locked; in mock_remove_from_engine() local
273 locked = READ_ONCE(rq->engine); in mock_remove_from_engine()
274 spin_lock_irq(&locked->sched_engine->lock); in mock_remove_from_engine()
275 while (unlikely(locked != (engine = READ_ONCE(rq->engine)))) { in mock_remove_from_engine()
276 spin_unlock(&locked->sched_engine->lock); in mock_remove_from_engine()
278 locked = engine; in mock_remove_from_engine()
281 spin_unlock_irq(&locked->sched_engine->lock); in mock_remove_from_engine()
/linux/drivers/staging/vme_user/
H A Dvme.c277 (slave_image->locked == 0)) { in vme_slave_request()
278 slave_image->locked = 1; in vme_slave_request()
302 slave_image->locked = 0; in vme_slave_request()
422 if (slave_image->locked == 0) in vme_slave_free()
425 slave_image->locked = 0; in vme_slave_free()
472 (master_image->locked == 0)) { in vme_master_request()
473 master_image->locked = 1; in vme_master_request()
499 master_image->locked = 0; in vme_master_request()
796 if (master_image->locked == 0) in vme_master_free()
799 master_image->locked = 0; in vme_master_free()
[all …]
/linux/tools/testing/selftests/mm/
H A Dmlock2-tests.c133 bool locked; in is_vma_lock_on_fault() local
136 locked = is_vmflag_set(addr, LOCKED); in is_vma_lock_on_fault()
137 if (!locked) in is_vma_lock_on_fault()
153 bool locked; in lock_check() local
156 locked = is_vmflag_set(addr, LOCKED); in lock_check()
157 if (!locked) in lock_check()

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