| /linux/tools/testing/selftests/mm/ |
| H A D | hmm-tests.c | 183 struct hmm_buffer *buffer, in hmm_dmirror_cmd() argument
190 cmd.addr = (__u64)buffer->ptr; in hmm_dmirror_cmd()
191 cmd.ptr = (__u64)buffer->mirror; in hmm_dmirror_cmd()
202 buffer->cpages = cmd.cpages; in hmm_dmirror_cmd()
203 buffer->faults = cmd.faults; in hmm_dmirror_cmd()
208 static void hmm_buffer_free(struct hmm_buffer *buffer) in hmm_buffer_free() argument
210 if (buffer == NULL) in hmm_buffer_free()
213 if (buffer->ptr) { in hmm_buffer_free()
214 munmap(buffer->ptr, buffer->size); in hmm_buffer_free()
215 buffer->ptr = NULL; in hmm_buffer_free()
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| /linux/drivers/s390/char/ |
| H A D | sclp_rw.c | 35 * Setup a sclp write buffer. Gets a page as input (4K) and returns
37 * end of the input page. This reduces the buffer space by a few
43 struct sclp_buffer *buffer; in sclp_make_buffer() local
51 buffer = ((struct sclp_buffer *) ((addr_t) sccb + PAGE_SIZE)) - 1; in sclp_make_buffer()
52 buffer->sccb = sccb; in sclp_make_buffer()
53 buffer->retry_count = 0; in sclp_make_buffer()
54 buffer->messages = 0; in sclp_make_buffer()
55 buffer->char_sum = 0; in sclp_make_buffer()
56 buffer->current_line = NULL; in sclp_make_buffer()
57 buffer->current_length = 0; in sclp_make_buffer()
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| /linux/fs/configfs/ |
| H A D | file.c | 56 static int fill_read_buffer(struct file *file, struct configfs_buffer *buffer) in fill_read_buffer() argument
61 if (!buffer->page) in fill_read_buffer()
62 buffer->page = (char *) get_zeroed_page(GFP_KERNEL); in fill_read_buffer()
63 if (!buffer->page) in fill_read_buffer()
68 count = buffer->attr->show(buffer->item, buffer->page); in fill_read_buffer()
75 buffer->needs_read_fill = 0; in fill_read_buffer()
76 buffer->count = count; in fill_read_buffer()
83 struct configfs_buffer *buffer = file->private_data; in configfs_read_iter() local
86 mutex_lock(&buffer->mutex); in configfs_read_iter()
87 if (buffer->needs_read_fill) { in configfs_read_iter()
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| /linux/sound/hda/common/ |
| H A D | proc.c | 47 static void print_nid_array(struct snd_info_buffer *buffer, in print_nid_array() argument
58 snd_iprintf(buffer, in print_nid_array()
63 snd_iprintf(buffer, in print_nid_array()
74 static void print_nid_pcms(struct snd_info_buffer *buffer, in print_nid_pcms() argument
84 snd_iprintf(buffer, " Device: name=\"%s\", " in print_nid_pcms()
93 static void print_amp_caps(struct snd_info_buffer *buffer, in print_amp_caps() argument
100 snd_iprintf(buffer, "N/A\n"); in print_amp_caps()
103 snd_iprintf(buffer, "ofs=0x%02x, nsteps=0x%02x, stepsize=0x%02x, " in print_amp_caps()
133 static void print_amp_vals(struct snd_info_buffer *buffer, in print_amp_vals() argument
145 snd_iprintf(buffer, " ["); in print_amp_vals()
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| /linux/include/linux/ |
| H A D | ring_buffer.h | 24 * enum ring_buffer_type - internal ring buffer types
66 u64 ring_buffer_event_time_stamp(struct trace_buffer *buffer,
73 * will try to remove the event from the ring buffer completely
79 * ring_buffer_discard_commit(buffer, event);
81 * ring_buffer_unlock_commit(buffer, event);
83 void ring_buffer_discard_commit(struct trace_buffer *buffer,
87 * size is in bytes for each per CPU buffer.
98 void *ring_buffer_meta_scratch(struct trace_buffer *buffer, unsigned int *size);
101 * Because the ring buffer is generic, if other users of the ring buffer get
103 * ring buffer's lock class separate.
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| H A D | relay.h | 32 * Relay buffer statistics
43 unsigned int full_count; /* counter for buffer full */
48 * Per-cpu relay channel buffer
52 void *start; /* start of channel buffer */
53 void *data; /* start of current sub-buffer */
54 size_t offset; /* current offset into sub-buffer */
61 struct kref kref; /* channel buffer refcount */
62 struct rchan_buf_stats stats; /* buffer stats */
63 struct page **page_array; /* array of current buffer pages */
64 unsigned int page_count; /* number of current buffer pages */
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| /linux/drivers/android/ |
| H A D | binder_alloc.c | 51 static struct binder_buffer *binder_buffer_next(struct binder_buffer *buffer) in binder_buffer_next() argument
53 return list_entry(buffer->entry.next, struct binder_buffer, entry); in binder_buffer_next()
56 static struct binder_buffer *binder_buffer_prev(struct binder_buffer *buffer) in binder_buffer_prev() argument
58 return list_entry(buffer->entry.prev, struct binder_buffer, entry); in binder_buffer_prev()
62 struct binder_buffer *buffer) in binder_alloc_buffer_size() argument
64 if (list_is_last(&buffer->entry, &alloc->buffers)) in binder_alloc_buffer_size()
65 return alloc->vm_start + alloc->buffer_size - buffer->user_data; in binder_alloc_buffer_size()
66 return binder_buffer_next(buffer)->user_data - buffer->user_data; in binder_alloc_buffer_size()
75 struct binder_buffer *buffer; in binder_insert_free_buffer() local
84 "%d: add free buffer, size %zd, at %p\n", in binder_insert_free_buffer()
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| /linux/drivers/iio/buffer/ |
| H A D | industrialio-buffer-dmaengine.c | 18 #include <linux/iio/buffer.h>
20 #include <linux/iio/buffer-dma.h>
21 #include <linux/iio/buffer-dmaengine.h>
24 * The IIO DMAengine buffer combines the generic IIO DMA buffer infrastructure
25 * with the DMAengine framework. The generic IIO DMA buffer infrastructure is
26 * used to manage the buffer memory and implement the IIO buffer operations
28 * this results in a device independent fully functional DMA buffer
43 static struct dmaengine_buffer *iio_buffer_to_dmaengine_buffer(struct iio_buffer *buffer) in iio_buffer_to_dmaengine_buffer() argument
45 return container_of(buffer, struct dmaengine_buffer, queue.buffer); in iio_buffer_to_dmaengine_buffer()
63 iio_buffer_to_dmaengine_buffer(&queue->buffer); in iio_dmaengine_buffer_submit_block()
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| H A D | industrialio-buffer-dma.c | 19 #include <linux/iio/buffer-dma.h>
27 * has its own memory buffer. The size of the block is the granularity at which
74 * the actual number of bytes in the buffer. Typically this will be equal to the
82 * perform a DMA transfer for the block, e.g. because the buffer was disabled
87 * It will be called when the buffer is disabled and can be used to cancel
113 iio_buffer_put(&queue->buffer); in iio_buffer_block_release()
169 return container_of(buf, struct iio_dma_buffer_queue, buffer); in iio_buffer_to_queue()
195 iio_buffer_get(&queue->buffer); in iio_dma_buffer_alloc_block()
213 if (queue->buffer.direction == IIO_BUFFER_DIRECTION_IN) in iio_dma_buffer_queue_wake()
218 wake_up_interruptible_poll(&queue->buffer.pollq, flags); in iio_dma_buffer_queue_wake()
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| /linux/drivers/iio/ |
| H A D | industrialio-buffer.c | 6 * Handling of buffer allocation / resizing.
34 #include <linux/iio/buffer.h>
45 struct iio_buffer *buffer; member
99 /* drain the buffer if it was disabled */ in iio_buffer_ready()
128 * iio_buffer_read() - chrdev read for buffer access
130 * @buf: Destination buffer for iio buffer read
134 * This function relies on all buffer implementations having an
144 struct iio_buffer *rb = ib->buffer; in iio_buffer_read()
164 * buffer, so signal end of file now. in iio_buffer_read()
213 struct iio_buffer *rb = ib->buffer; in iio_buffer_write()
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| /linux/drivers/dma-buf/heaps/ |
| H A D | cma_heap.c | 73 struct cma_heap_buffer *buffer = dmabuf->priv; in cma_heap_attach() local
81 ret = sg_alloc_table_from_pages(&a->table, buffer->pages, in cma_heap_attach()
82 buffer->pagecount, 0, in cma_heap_attach()
83 buffer->pagecount << PAGE_SHIFT, in cma_heap_attach()
96 mutex_lock(&buffer->lock); in cma_heap_attach()
97 list_add(&a->list, &buffer->attachments); in cma_heap_attach()
98 mutex_unlock(&buffer->lock); in cma_heap_attach()
106 struct cma_heap_buffer *buffer = dmabuf->priv; in cma_heap_detach() local
109 mutex_lock(&buffer->lock); in cma_heap_detach()
111 mutex_unlock(&buffer->lock); in cma_heap_detach()
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| H A D | system_heap.c | 76 struct system_heap_buffer *buffer = dmabuf->priv; in system_heap_attach() local
84 ret = dup_sg_table(&buffer->sg_table, &a->table); in system_heap_attach()
96 mutex_lock(&buffer->lock); in system_heap_attach()
97 list_add(&a->list, &buffer->attachments); in system_heap_attach()
98 mutex_unlock(&buffer->lock); in system_heap_attach()
106 struct system_heap_buffer *buffer = dmabuf->priv; in system_heap_detach() local
109 mutex_lock(&buffer->lock); in system_heap_detach()
111 mutex_unlock(&buffer->lock); in system_heap_detach()
145 struct system_heap_buffer *buffer = dmabuf->priv; in system_heap_dma_buf_begin_cpu_access() local
148 mutex_lock(&buffer->lock); in system_heap_dma_buf_begin_cpu_access()
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| /linux/drivers/gpu/drm/ |
| H A D | drm_client.c | 33 * GEM drivers which provide a GEM based dumb buffer with a virtual address are supported.
159 * is fbdev which cannot free the buffer if userspace has open file descriptors.
182 * drm_client_buffer_delete - Delete a client buffer
183 * @buffer: DRM client buffer
185 void drm_client_buffer_delete(struct drm_client_buffer *buffer) in drm_client_buffer_delete() argument
190 if (!buffer) in drm_client_buffer_delete()
193 gem = buffer->fb->obj[0]; in drm_client_buffer_delete()
194 drm_gem_vunmap(gem, &buffer->map); in drm_client_buffer_delete()
196 ret = drm_mode_rmfb(buffer->client->dev, buffer->fb->base.id, buffer->client->file); in drm_client_buffer_delete()
198 drm_err(buffer->client->dev, in drm_client_buffer_delete()
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| /linux/drivers/pnp/ |
| H A D | interface.c | 26 char *buffer; /* pointer to begin of buffer */ member
27 char *curr; /* current position in buffer */
29 unsigned long len; /* total length of buffer */
37 static int pnp_printf(pnp_info_buffer_t * buffer, char *fmt, ...) in pnp_printf() argument
42 if (buffer->stop || buffer->error) in pnp_printf()
45 res = vsnprintf(buffer->curr, buffer->len - buffer->size, fmt, args); in pnp_printf()
47 if (buffer->size + res >= buffer->len) { in pnp_printf()
48 buffer->stop = 1; in pnp_printf()
51 buffer->curr += res; in pnp_printf()
52 buffer->size += res; in pnp_printf()
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| /linux/drivers/net/ethernet/mellanox/mlx5/core/en/ |
| H A D | port_buffer.c | 41 void *buffer; in mlx5e_port_query_buffer() local
55 buffer = MLX5_ADDR_OF(pbmc_reg, out, buffer[i]); in mlx5e_port_query_buffer()
56 port_buffer->buffer[i].lossy = in mlx5e_port_query_buffer()
57 MLX5_GET(bufferx_reg, buffer, lossy); in mlx5e_port_query_buffer()
58 port_buffer->buffer[i].epsb = in mlx5e_port_query_buffer()
59 MLX5_GET(bufferx_reg, buffer, epsb); in mlx5e_port_query_buffer()
60 port_buffer->buffer[i].size = in mlx5e_port_query_buffer()
61 MLX5_GET(bufferx_reg, buffer, size) * port_buff_cell_sz; in mlx5e_port_query_buffer()
62 port_buffer->buffer[i].xon = in mlx5e_port_query_buffer()
63 MLX5_GET(bufferx_reg, buffer, xon_threshold) * port_buff_cell_sz; in mlx5e_port_query_buffer()
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| /linux/sound/usb/6fire/ |
| H A D | comm.c | 22 u8 *buffer, void *context, void(*handler)(struct urb *urb)) in usb6fire_comm_init_urb() argument
25 urb->transfer_buffer = buffer; in usb6fire_comm_init_urb()
55 static void usb6fire_comm_init_buffer(u8 *buffer, u8 id, u8 request, in usb6fire_comm_init_buffer() argument
58 buffer[0] = 0x01; in usb6fire_comm_init_buffer()
59 buffer[2] = request; in usb6fire_comm_init_buffer()
60 buffer[3] = id; in usb6fire_comm_init_buffer()
63 buffer[1] = 0x05; /* length (starting at buffer[2]) */ in usb6fire_comm_init_buffer()
64 buffer[4] = reg; in usb6fire_comm_init_buffer()
65 buffer[5] = vl; in usb6fire_comm_init_buffer()
66 buffer[6] = vh; in usb6fire_comm_init_buffer()
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| /linux/tools/wmi/ |
| H A D | dell-smbios-example.c | 32 static void show_buffer(struct dell_wmi_smbios_buffer *buffer) in show_buffer() argument
35 buffer->std.cmd_class, buffer->std.cmd_select, in show_buffer()
36 buffer->std.input[0], buffer->std.input[1], in show_buffer()
37 buffer->std.input[2], buffer->std.input[3], in show_buffer()
38 buffer->std.output[0], buffer->std.output[1], in show_buffer()
39 buffer->std.output[2], buffer->std.output[3]); in show_buffer()
42 static int run_wmi_smbios_cmd(struct dell_wmi_smbios_buffer *buffer) in run_wmi_smbios_cmd() argument
48 ret = ioctl(fd, DELL_WMI_SMBIOS_CMD, buffer); in run_wmi_smbios_cmd()
95 struct dell_wmi_smbios_buffer *buffer) in token_is_active() argument
99 buffer->std.cmd_class = CLASS_TOKEN_READ; in token_is_active()
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| /linux/drivers/acpi/acpica/ |
| H A D | exstorob.c | 26 * DESCRIPTION: Copy a buffer object to another buffer object.
34 u8 *buffer; in acpi_ex_store_buffer_to_buffer() local
44 /* We know that source_desc is a buffer by now */ in acpi_ex_store_buffer_to_buffer()
46 buffer = ACPI_CAST_PTR(u8, source_desc->buffer.pointer); in acpi_ex_store_buffer_to_buffer()
47 length = source_desc->buffer.length; in acpi_ex_store_buffer_to_buffer()
50 * If target is a buffer of length zero or is a static buffer, in acpi_ex_store_buffer_to_buffer()
51 * allocate a new buffer of the proper length in acpi_ex_store_buffer_to_buffer()
53 if ((target_desc->buffer.length == 0) || in acpi_ex_store_buffer_to_buffer()
55 target_desc->buffer.pointer = ACPI_ALLOCATE(length); in acpi_ex_store_buffer_to_buffer()
56 if (!target_desc->buffer.pointer) { in acpi_ex_store_buffer_to_buffer()
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| /linux/kernel/trace/ |
| H A D | ring_buffer.c | 3 * Generic ring buffer
40 * The "absolute" timestamp in the buffer is only 59 bits.
68 * The ring buffer header is special. We must manually up keep it.
90 * The ring buffer is made up of a list of pages. A separate list of pages is
91 * allocated for each CPU. A writer may only write to a buffer that is
93 * from any per cpu buffer.
95 * The reader is special. For each per cpu buffer, the reader has its own
97 * page is swapped with another page in the ring buffer.
101 * again (as long as it is out of the ring buffer).
106 * |reader| RING BUFFER
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| /linux/sound/firewire/dice/ |
| H A D | dice-proc.c | 11 static int dice_proc_read_mem(struct snd_dice *dice, void *buffer, in dice_proc_read_mem() argument
19 buffer, 4 * quadlets, 0); in dice_proc_read_mem()
24 be32_to_cpus(&((u32 *)buffer)[i]); in dice_proc_read_mem()
57 struct snd_info_buffer *buffer) in dice_proc_read() argument
119 snd_iprintf(buffer, "sections:\n"); in dice_proc_read()
121 snd_iprintf(buffer, " %s: offset %u, size %u\n", in dice_proc_read()
128 snd_iprintf(buffer, "global:\n"); in dice_proc_read()
129 snd_iprintf(buffer, " owner: %04x:%04x%08x\n", in dice_proc_read()
132 snd_iprintf(buffer, " notification: %08x\n", buf.global.notification); in dice_proc_read()
134 snd_iprintf(buffer, " nick name: %s\n", buf.global.nick_name); in dice_proc_read()
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| /linux/Documentation/core-api/ |
| H A D | circular-buffers.rst | 16 buffer don't want to share a lock.
25 (*) What is a circular buffer?
35 What is a circular buffer?
38 First of all, what is a circular buffer? A circular buffer is a buffer of
42 buffer.
45 the buffer.
47 Typically when the tail pointer is equal to the head pointer, the buffer is
48 empty; and the buffer is full when the head pointer is one less than the tail
53 indices should be wrapped to 0 when they reach the end of the buffer, thus
54 allowing an infinite amount of data to flow through the buffer.
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| /linux/drivers/media/tuners/ |
| H A D | tea5767.c | 133 unsigned char *buffer) in tea5767_status_dump() argument
137 if (TEA5767_READY_FLAG_MASK & buffer[0]) in tea5767_status_dump()
142 if (TEA5767_BAND_LIMIT_MASK & buffer[0]) in tea5767_status_dump()
147 div = ((buffer[0] & 0x3f) << 8) | buffer[1]; in tea5767_status_dump()
164 buffer[0] = (div >> 8) & 0x3f; in tea5767_status_dump()
165 buffer[1] = div & 0xff; in tea5767_status_dump()
170 if (TEA5767_STEREO_MASK & buffer[2]) in tea5767_status_dump()
175 tuner_info("IF Counter = %d\n", buffer[2] & TEA5767_IF_CNTR_MASK); in tea5767_status_dump()
178 (buffer[3] & TEA5767_ADC_LEVEL_MASK) >> 4); in tea5767_status_dump()
180 tuner_info("Chip ID = %d\n", (buffer[3] & TEA5767_CHIP_ID_MASK)); in tea5767_status_dump()
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| /linux/sound/firewire/fireworks/ |
| H A D | fireworks_proc.c | 28 proc_read_hwinfo(struct snd_info_entry *entry, struct snd_info_buffer *buffer) in proc_read_hwinfo() argument
41 snd_iprintf(buffer, "guid_hi: 0x%X\n", hwinfo->guid_hi); in proc_read_hwinfo()
42 snd_iprintf(buffer, "guid_lo: 0x%X\n", hwinfo->guid_lo); in proc_read_hwinfo()
43 snd_iprintf(buffer, "type: 0x%X\n", hwinfo->type); in proc_read_hwinfo()
44 snd_iprintf(buffer, "version: 0x%X\n", hwinfo->version); in proc_read_hwinfo()
45 snd_iprintf(buffer, "vendor_name: %s\n", hwinfo->vendor_name); in proc_read_hwinfo()
46 snd_iprintf(buffer, "model_name: %s\n", hwinfo->model_name); in proc_read_hwinfo()
48 snd_iprintf(buffer, "dsp_version: 0x%X\n", hwinfo->dsp_version); in proc_read_hwinfo()
49 snd_iprintf(buffer, "arm_version: 0x%X\n", hwinfo->arm_version); in proc_read_hwinfo()
50 snd_iprintf(buffer, "fpga_version: 0x%X\n", hwinfo->fpga_version); in proc_read_hwinfo()
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| /linux/arch/riscv/include/asm/ |
| H A D | io.h | 67 void *buffer, \
72 ctype *buf = buffer; \
84 const void *buffer, \
89 const ctype *buf = buffer; \
101 #define readsb(addr, buffer, count) __readsb(addr, buffer, count) argument
102 #define readsw(addr, buffer, count) __readsw(addr, buffer, count) argument
103 #define readsl(addr, buffer, count) __readsl(addr, buffer, count) argument
108 #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count) argument
109 #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count) argument
110 #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count) argument
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| /linux/drivers/platform/surface/aggregator/ |
| H A D | ssh_parser.h | 19 * struct sshp_buf - Parser buffer for SSH messages.
20 * @ptr: Pointer to the beginning of the buffer.
21 * @len: Number of bytes used in the buffer.
22 * @cap: Maximum capacity of the buffer.
31 * sshp_buf_init() - Initialize a SSH parser buffer.
32 * @buf: The buffer to initialize.
33 * @ptr: The memory backing the buffer.
34 * @cap: The length of the memory backing the buffer, i.e. its capacity.
36 * Initializes the buffer with the given memory as backing and set its used
47 * sshp_buf_alloc() - Allocate and initialize a SSH parser buffer.
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