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/linux/drivers/infiniband/hw/hfi1/
H A Dmmu_rb.c45 struct mmu_rb_handler **handler) in hfi1_mmu_rb_register() argument
74 *handler = h; in hfi1_mmu_rb_register()
78 void hfi1_mmu_rb_unregister(struct mmu_rb_handler *handler) in hfi1_mmu_rb_unregister() argument
86 mmgrab(handler->mn.mm); in hfi1_mmu_rb_unregister()
89 mmu_notifier_unregister(&handler->mn, handler->mn.mm); in hfi1_mmu_rb_unregister()
92 * Make sure the wq delete handler is finished running. It will not in hfi1_mmu_rb_unregister()
95 flush_work(&handler->del_work); in hfi1_mmu_rb_unregister()
99 spin_lock_irqsave(&handler->lock, flags); in hfi1_mmu_rb_unregister()
100 while ((node = rb_first_cached(&handler->root))) { in hfi1_mmu_rb_unregister()
102 rb_erase_cached(node, &handler->root); in hfi1_mmu_rb_unregister()
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/linux/net/ipv4/
H A Dtunnel4.c31 int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family) in xfrm4_tunnel_register() argument
37 int priority = handler->priority; in xfrm4_tunnel_register()
51 handler->next = *pprev; in xfrm4_tunnel_register()
52 rcu_assign_pointer(*pprev, handler); in xfrm4_tunnel_register()
63 int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family) in xfrm4_tunnel_deregister() argument
75 if (t == handler) { in xfrm4_tunnel_deregister()
76 *pprev = handler->next; in xfrm4_tunnel_deregister()
90 #define for_each_tunnel_rcu(head, handler) \ argument
91 for (handler = rcu_dereference(head); \
92 handler != NULL; \
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/linux/drivers/acpi/acpica/
H A Devxface.c37 * handler_type - The type of handler:
38 * ACPI_SYSTEM_NOTIFY: System Handler (00-7F)
39 * ACPI_DEVICE_NOTIFY: Device Handler (80-FF)
41 * handler - Address of the handler
42 * context - Value passed to the handler on each GPE
46 * DESCRIPTION: Install a handler for notifications on an ACPI Device,
49 * NOTES: The Root namespace object may have only one handler for each
51 * may have one device notify handler, and multiple system notify
59 acpi_notify_handler handler, void *context) in acpi_install_notify_handler() argument
72 if ((!device) || (!handler) || (!handler_type) || in acpi_install_notify_handler()
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H A Devhandler.c65 * We install the default PCI config space handler at the root so that in acpi_ev_install_region_handlers()
72 * NOTE: We ignore AE_ALREADY_EXISTS because this means that a handler in acpi_ev_install_region_handlers()
110 * RETURN: TRUE if default handler is installed, FALSE otherwise
112 * DESCRIPTION: Check if the default handler is installed for the requested
128 handler_obj = obj_desc->common_notify.handler; in acpi_ev_has_default_handler()
153 * DESCRIPTION: This routine installs an address handler into objects that are
156 * If the Object is a Device, and the device has a handler of
159 * This is because the existing handler is closer in proximity
214 /* Check if this Device already has a handler for this address space */ in acpi_ev_install_handler()
220 handler); in acpi_ev_install_handler()
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H A Devxfregn.c27 * handler - Address of the handler
29 * context - Value passed to the handler on each access
34 * DESCRIPTION: Install a handler for all op_regions of a given space_id.
48 acpi_adr_space_handler handler, in acpi_install_address_space_handler_internal() argument
76 /* Install the handler for all Regions for this Space ID */ in acpi_install_address_space_handler_internal()
79 acpi_ev_install_space_handler(node, space_id, handler, setup, in acpi_install_address_space_handler_internal()
100 acpi_adr_space_handler handler, in acpi_install_address_space_handler() argument
104 handler, setup, in acpi_install_address_space_handler()
112 acpi_adr_space_handler handler, in ACPI_EXPORT_SYMBOL()
117 handler, setup, in ACPI_EXPORT_SYMBOL()
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/linux/net/ipv6/
H A Dtunnel6.c32 int xfrm6_tunnel_register(struct xfrm6_tunnel *handler, unsigned short family) in xfrm6_tunnel_register() argument
37 int priority = handler->priority; in xfrm6_tunnel_register()
64 handler->next = *pprev; in xfrm6_tunnel_register()
65 rcu_assign_pointer(*pprev, handler); in xfrm6_tunnel_register()
76 int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler, unsigned short family) in xfrm6_tunnel_deregister() argument
101 if (t == handler) { in xfrm6_tunnel_deregister()
102 *pprev = handler->next; in xfrm6_tunnel_deregister()
117 #define for_each_tunnel_rcu(head, handler) \ argument
118 for (handler = rcu_dereference(head); \
119 handler != NULL; \
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H A Dxfrm6_protocol.c41 #define for_each_protocol_rcu(head, handler) \ argument
42 for (handler = rcu_dereference(head); \
43 handler != NULL; \
44 handler = rcu_dereference(handler->next)) \
49 struct xfrm6_protocol *handler; in xfrm6_rcv_cb() local
55 for_each_protocol_rcu(*proto_handlers(protocol), handler) in xfrm6_rcv_cb()
56 if ((ret = handler->cb_handler(skb, err)) <= 0) in xfrm6_rcv_cb()
66 struct xfrm6_protocol *handler; in xfrm6_rcv_encap() local
96 for_each_protocol_rcu(*head, handler) in xfrm6_rcv_encap()
97 if ((ret = handler->input_handler(skb, nexthdr, spi, encap_type)) != -EINVAL) in xfrm6_rcv_encap()
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/linux/drivers/irqchip/
H A Dirq-sifive-plic.c108 static void __plic_toggle(struct plic_handler *handler, int hwirq, int enable) in __plic_toggle() argument
110 u32 __iomem *base = handler->enable_base; in __plic_toggle()
122 handler->enable_save[group] = value; in __plic_toggle()
126 static void plic_toggle(struct plic_handler *handler, int hwirq, int enable) in plic_toggle() argument
130 raw_spin_lock_irqsave(&handler->enable_lock, flags); in plic_toggle()
131 __plic_toggle(handler, hwirq, enable); in plic_toggle()
132 raw_spin_unlock_irqrestore(&handler->enable_lock, flags); in plic_toggle()
141 struct plic_handler *handler = per_cpu_ptr(&plic_handlers, cpu); in plic_irq_toggle() local
143 plic_toggle(handler, d->hwirq, enable); in plic_irq_toggle()
174 struct plic_handler *handler = this_cpu_ptr(&plic_handlers); in plic_irq_eoi() local
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/linux/kernel/
H A Dreboot.c175 * @nb: Info about handler function to be called
176 * @nb->priority: Handler priority. Handlers should follow the
178 * 0: Restart handler of last resort,
180 * 128: Default restart handler; use if no other
181 * restart handler is expected to be available,
184 * 255: Highest priority restart handler, will
195 * If more than one function is registered, the restart handler priority
201 * restart handlers may exist; for example, one restart handler might
203 * In such cases, the restart handler which only restarts part of the
218 * restart handler
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/linux/drivers/soc/fsl/qbman/
H A Dqman_test_stash.c43 * moves it from one cpu to another. (The use of more than one handler per cpu
49 * each forwarding action. To achieve this, each handler will be assigned a
51 * received by a handler, the mixer of the expected sender is XOR'd into all
54 * the current handler. Apart from validating that the frame is taking the
57 * conditional branching. There is a "special" handler designated to act as the
65 * handlers and link-list them (but do no other handler setup).
68 * hp_cpu's 'iterator' to point to its first handler. With each loop,
69 * allocate rx/tx FQIDs and mixer values to the hp_cpu's iterator handler
71 * which connects the last handler to the first (and which is why phase 2
75 * hp_cpu's 'iterator' to point to its first handler. With each loop,
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/linux/drivers/acpi/
H A Dwakeup.c102 * acpi_register_wakeup_handler - Register wakeup handler
104 * @wakeup: Wakeup-handler to call when the SCI has triggered a wakeup
105 * @context: Context to pass to the handler when calling it
108 * a handler which returns true when the device they are managing wants
114 struct acpi_wakeup_handler *handler; in acpi_register_wakeup_handler() local
118 * need to register the handler. in acpi_register_wakeup_handler()
123 handler = kmalloc_obj(*handler, GFP_KERNEL); in acpi_register_wakeup_handler()
124 if (!handler) in acpi_register_wakeup_handler()
127 handler->wakeup = wakeup; in acpi_register_wakeup_handler()
128 handler->context = context; in acpi_register_wakeup_handler()
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/linux/drivers/scsi/
H A Dscsi_dh.c3 * SCSI device handler infrastructure.
120 * scsi_dh_handler_attach - Attach a device handler to a device
121 * @sdev - SCSI device the device handler should attach to
122 * @scsi_dh - The device handler to attach
154 sdev->handler = scsi_dh; in scsi_dh_handler_attach()
160 * scsi_dh_handler_detach - Detach a device handler from a device
161 * @sdev - SCSI device the device handler should be detached from
165 sdev->handler->detach(sdev); in scsi_dh_handler_detach()
166 sdev_printk(KERN_NOTICE, sdev, "%s: Detached\n", sdev->handler->name); in scsi_dh_handler_detach()
167 module_put(sdev->handler->module); in scsi_dh_handler_detach()
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/linux/drivers/gpu/drm/amd/display/amdgpu_dm/
H A Damdgpu_dm_irq.c41 * The base driver provides IRQ source registration with DRM, handler
42 * registration into the base driver's IRQ table, and a handler callback
44 * handler looks up the IRQ table, and calls the respective
55 * are all set to the DM generic handler amdgpu_dm_irq_handler(), which looks up
72 * @list: Linked list entry referencing the next/previous handler
73 * @handler: Handler function
74 * @handler_arg: Argument passed to the handler when triggered
75 * @dm: DM which this handler belongs to
76 * @irq_source: DC interrupt source that this handler is registered for
81 interrupt_handler handler; member
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/linux/arch/arm/probes/uprobes/
H A Dactions-arm.c195 [PROBES_PRELOAD_IMM] = {.handler = probes_simulate_nop},
196 [PROBES_PRELOAD_REG] = {.handler = probes_simulate_nop},
197 [PROBES_BRANCH_IMM] = {.handler = simulate_blx1},
198 [PROBES_MRS] = {.handler = simulate_mrs},
199 [PROBES_BRANCH_REG] = {.handler = simulate_blx2bx},
200 [PROBES_CLZ] = {.handler = probes_simulate_nop},
201 [PROBES_SATURATING_ARITHMETIC] = {.handler = probes_simulate_nop},
202 [PROBES_MUL1] = {.handler = probes_simulate_nop},
203 [PROBES_MUL2] = {.handler = probes_simulate_nop},
204 [PROBES_SWP] = {.handler = probes_simulate_nop},
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/linux/arch/xtensa/kernel/
H A Dvectors.S22 * fast handler or the default handler, if no fast handler was registered.
23 * The default handler sets up a C-stack and dispatches the exception to a
24 * registerd C handler in the second-level dispatch table.
26 * Fast handler entry condition:
41 * Note: Neither the kernel nor the user exception handler generate literals.
63 * We switch to the kernel stack and jump to the first level handler
81 l32i a0, a0, EXC_TABLE_FAST_USER # load handler
92 * jump to the first-level handler associated with the exception cause.
108 l32i a0, a0, EXC_TABLE_FAST_KERNEL # load handler address
134 * vmalloc memory, possibly requiring repair in a double exception handler.
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/linux/arch/arm/probes/kprobes/
H A Dactions-arm.c23 * setting a handler for it to run the instruction.
25 * In the execution phase by an instruction's handler:
31 * directly executed. Its handler calls the
298 [PROBES_PRELOAD_IMM] = {.handler = probes_simulate_nop},
299 [PROBES_PRELOAD_REG] = {.handler = probes_simulate_nop},
300 [PROBES_BRANCH_IMM] = {.handler = simulate_blx1},
301 [PROBES_MRS] = {.handler = simulate_mrs},
302 [PROBES_BRANCH_REG] = {.handler = simulate_blx2bx},
303 [PROBES_CLZ] = {.handler = emulate_rd12rm0_noflags_nopc},
305 .handler = emulate_rd12rn16rm0_rwflags_nopc},
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/linux/tools/testing/selftests/signal/
H A Dmangle_uc_sigmask.c18 * that, in case of registering a handler and catching the corresponding
19 * signal, that state is before what was jumping into the handler.
22 * just during the execution of the handler, by mangling with uc_sigmask
23 * from inside the handler.
26 * signal for which the handler was installed, is S2. When S2 is sent to the
28 * signal and jump to the handler. Any instances of S1 or S2 raised, while the
29 * program is executing inside the handler, will be blocked; they will be
30 * delivered immediately upon termination of the handler.
54 * exit from handler in handler_verify_ucontext()
80 * from inside the handler in handler_usr()
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/linux/drivers/gpu/vga/
H A Dvga_switcheroo.c70 * clients. The mux is called the handler. Muxless machines also register a
71 * handler to control the power state of the discrete GPU, its ->switchto
87 * switched to it, provided that the handler supports this. Switching
99 * @id: client identifier. Determining the id requires the handler,
133 * Prerequisite is the registration of two GPUs and a handler
140 * @handler: registered handler
141 * @handler_flags: flags of registered handler
159 const struct vga_switcheroo_handler *handler; member
181 /* we're ready if we get two clients + handler */ in vga_switcheroo_ready()
183 vgasr_priv.registered_clients == 2 && vgasr_priv.handler; in vga_switcheroo_ready()
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/linux/Documentation/arch/arm/
H A Dinterrupts.rst39 SA1111 IRQ handler, SA1111 IRQs can hold off SMC9196 IRQs indefinitely.
45 to the Neponset handler, the "parent" is GPIO25, and the "children"d
90 the hardware IRQ if possible. If not, may call the handler
104 - per-IRQ handler
107 The handler can be one of the 3 standard handlers - "level", "edge" and
108 "simple", or your own specific handler if you need to do something special.
110 The "level" handler is what we currently have - its pretty simple.
114 "simple" handler is very basic, and does not perform any hardware
131 set_irq_handler(irq,handler)
132 Set the handler for this IRQ (level, edge, simple)
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/linux/include/media/
H A Ddvb_vb2.h73 * struct dvb_vb2_ctx - control struct for VB2 handler
134 * dvb_vb2_init - initializes VB2 handler in dvb_vb2_poll()
136 * @ctx: control struct for VB2 handler
137 * @name: name for the VB2 handler
146 * dvb_vb2_release - Releases the VB2 handler allocated resources and
148 * @ctx: control struct for VB2 handler
153 * dvb_vb2_is_streaming - checks if the VB2 handler is streaming
154 * @ctx: control struct for VB2 handler
162 * @ctx: control struct for VB2 handler
179 * @ctx: control struct for VB2 handler
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/linux/kernel/irq/
H A Ddevres.c34 irq_handler_t handler, irq_handler_t thread_fn, in devm_request_result() argument
41 irq, handler, thread_fn, devname ? : ""); in devm_request_result()
45 irq_handler_t handler, in __devm_request_threaded_irq() argument
61 rc = request_threaded_irq(irq, handler, thread_fn, irqflags, devname, in __devm_request_threaded_irq()
79 * @handler: Function to be called when the interrupt occurs
81 * for devices which handle everything in @handler
84 * @dev_id: A cookie passed back to the handler function
95 * information (device name, interrupt number, handler functions and
101 irq_handler_t handler, irq_handler_t thread_fn, in devm_request_threaded_irq() argument
105 int rc = __devm_request_threaded_irq(dev, irq, handler, thread_fn, in devm_request_threaded_irq()
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/linux/drivers/input/rmi4/
H A Drmi_bus.c150 const struct rmi_function_handler *handler = to_rmi_function_handler(drv); in rmi_function_match() local
153 return fn->fd.function_number == handler->func; in rmi_function_match()
176 struct rmi_function_handler *handler) in rmi_create_function_irq() argument
193 handler->attention, IRQF_ONESHOT, in rmi_create_function_irq()
207 struct rmi_function_handler *handler = in rmi_function_probe() local
213 if (handler->probe) { in rmi_function_probe()
214 error = handler->probe(fn); in rmi_function_probe()
219 if (fn->num_of_irqs && handler->attention) { in rmi_function_probe()
220 error = rmi_create_function_irq(fn, handler); in rmi_function_probe()
231 struct rmi_function_handler *handler = in rmi_function_remove() local
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/linux/Documentation/RCU/
H A DNMI-RCU.rst21 The dummy_nmi_callback() function is a "dummy" NMI handler that does
23 the NMI handler to take the default machine-specific action::
28 NMI handler::
47 count of NMIs. It then invokes the NMI handler stored in the nmi_callback
48 function pointer. If this handler returns zero, do_nmi() invokes the
70 The set_nmi_callback() function registers an NMI handler. Note that any
73 writes, the rcu_assign_pointer() ensures that the NMI handler sees the
81 This function unregisters an NMI handler, restoring the original
82 dummy_nmi_handler(). However, there may well be an NMI handler
84 up any data structures used by the old NMI handler until execution
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/linux/arch/um/include/shared/
H A Dirq_kern.h17 irq_handler_t handler, unsigned long irqflags,
22 * um_request_irq_tt - request an IRQ with timetravel handler
27 * @handler: the (generic style) IRQ handler
30 * @dev_id: data pointer to pass to the IRQ handler
31 * @timetravel_handler: the timetravel interrupt handler, invoked with the IRQ
36 * Note that the timetravel handler is invoked only if the time_travel_mode is
46 * it to pass such a message to the @handler in whichever way it can.
49 * not be invoked at all and the @handler must handle the FD becoming
56 irq_handler_t handler, unsigned long irqflags,
63 irq_handler_t handler, unsigned long irqflags, in um_request_irq_tt() argument
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/linux/kernel/trace/
H A Drethook.c46 * all running rethook handler before calling rethook_free(), you need to
51 rcu_assign_pointer(rh->handler, NULL); in rethook_stop()
59 * @rh::data is cleaned if needed (or, the handler can access it after
87 return (rethook_handler_t)rcu_dereference_check(rh->handler, in rethook_get_handler()
93 * @data: a data to pass the @handler when hooking the return.
94 * @handler: the return hook callback function, must NOT be NULL
98 * Allocate and initialize a new rethook with @data and @handler.
101 * Note that @handler == NULL means this rethook is going to be freed.
103 struct rethook *rethook_alloc(void *data, rethook_handler_t handler, in rethook_alloc() argument
108 if (!handler || num <= 0 || size < sizeof(struct rethook_node)) in rethook_alloc()
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