| /kernel/linux/linux-6.6/Documentation/driver-api/md/ |
| D | raid5-cache.rst | 7 caches data to the RAID disks. The cache can be in write-through (supported
8 since 4.4) or write-back mode (supported since 4.10). mdadm (supported since
9 3.4) has a new option '--write-journal' to create array with cache. Please
11 in write-through mode. A user can switch it to write-back mode by::
13 echo "write-back" > /sys/block/md0/md/journal_mode
15 And switch it back to write-through mode by::
17 echo "write-through" > /sys/block/md0/md/journal_mode
22 write-through mode
25 This mode mainly fixes the 'write hole' issue. For RAID 4/5/6 array, an unclean
27 and parity don't match. The reason is that a stripe write involves several RAID
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| /kernel/linux/linux-5.10/Documentation/driver-api/md/ |
| D | raid5-cache.rst | 7 caches data to the RAID disks. The cache can be in write-through (supported
8 since 4.4) or write-back mode (supported since 4.10). mdadm (supported since
9 3.4) has a new option '--write-journal' to create array with cache. Please
11 in write-through mode. A user can switch it to write-back mode by::
13 echo "write-back" > /sys/block/md0/md/journal_mode
15 And switch it back to write-through mode by::
17 echo "write-through" > /sys/block/md0/md/journal_mode
22 write-through mode
25 This mode mainly fixes the 'write hole' issue. For RAID 4/5/6 array, an unclean
27 and parity don't match. The reason is that a stripe write involves several RAID
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| /kernel/linux/linux-6.6/include/dt-bindings/memory/ |
| D | tegra234-mc.h | 182 /* MSS internal memqual MIU7 write clients */
186 /* MSS internal memqual MIU8 write clients */
190 /* MSS internal memqual MIU9 write clients */
194 /* MSS internal memqual MIU10 write clients */
198 /* MSS internal memqual MIU11 write clients */
202 /* MSS internal memqual MIU12 write clients */
206 /* MSS internal memqual MIU13 write clients */
230 /* PCIE6 write clients */
243 /* PCIE7 write clients */
247 /* High-definition audio (HDA) write clients */
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| D | tegra194-mc.h | 149 /* MSS internal memqual MIU7 write clients */
161 /* High-definition audio (HDA) write clients */
165 /* SATA write clients */
171 /* ISP Write client for Crossbar A */
173 /* ISP Write client Crossbar B */
177 /* XUSB_HOST write clients */
181 /* XUSB_DEV write clients */
189 /* sdmmca memory write client */
191 /* sdmmc memory write client */
193 /* sdmmcd memory write client */
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| /kernel/linux/linux-6.6/tools/perf/pmu-events/arch/s390/cf_z16/ |
| D | extended.json | 7 …"PublicDescription": "A directory write to the Level-1 Data cache where the line was originally in…
97 "BriefDescription": "Directory Write Level 1 Data Cache from Cache",
98 …"PublicDescription": "A directory write to the Level-1 Data cache directory where the returned cac…
104 "BriefDescription": "Directory Write Level 1 Data Cache from Cache with Intervention",
105 …"PublicDescription": "A directory write to the Level-1 Data cache directory where the returned cac…
111 "BriefDescription": "Directory Write Level 1 Data Cache from Cache with Chip HP Hit",
112 …"PublicDescription": "A directory write to the Level-1 Data cache directory where the returned cac…
118 "BriefDescription": "Directory Write Level 1 Data Cache from Cache with Drawer HP Hit",
119 …"PublicDescription": "A directory write to the Level-1 Data cache directory where the returned cac…
125 "BriefDescription": "Directory Write Level 1 Data Cache from On-Chip Cache",
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| /kernel/linux/linux-5.10/include/dt-bindings/memory/ |
| D | tegra194-mc.h | 149 /* MSS internal memqual MIU7 write clients */
161 /* High-definition audio (HDA) write clients */
165 /* SATA write clients */
171 /* ISP Write client for Crossbar A */
173 /* ISP Write client Crossbar B */
177 /* XUSB_HOST write clients */
181 /* XUSB_DEV write clients */
189 /* sdmmca memory write client */
191 /* sdmmc memory write client */
193 /* sdmmcd memory write client */
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| /kernel/linux/linux-6.6/tools/perf/pmu-events/arch/arm64/freescale/imx8mp/sys/ |
| D | metrics.json | 11 "BriefDescription": "bytes of all masters write to ddr",
13 "MetricExpr": "imx8_ddr0@axid\\-write\\,axi_mask\\=0xffff\\,axi_id\\=0x0000@",
27 "BriefDescription": "bytes of a53 core write to ddr",
29 "MetricExpr": "imx8_ddr0@axid\\-write\\,axi_mask\\=0x0000\\,axi_id\\=0x0000@",
43 "BriefDescription": "bytes of supermix(m7) write to ddr",
45 "MetricExpr": "imx8_ddr0@axid\\-write\\,axi_mask\\=0x000f\\,axi_id\\=0x0020@",
59 "BriefDescription": "bytes of gpu 3d write to ddr",
61 "MetricExpr": "imx8_ddr0@axid\\-write\\,axi_mask\\=0x0000\\,axi_id\\=0x0070@",
75 "BriefDescription": "bytes of gpu 2d write to ddr",
77 "MetricExpr": "imx8_ddr0@axid\\-write\\,axi_mask\\=0x0000\\,axi_id\\=0x0071@",
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| /kernel/linux/linux-5.10/tools/perf/pmu-events/arch/arm64/ |
| D | armv8-recommended.json | 9 "PublicDescription": "Attributable Level 1 data cache access, write",
12 "BriefDescription": "L1D cache access, write"
21 "PublicDescription": "Attributable Level 1 data cache refill, write",
24 "BriefDescription": "L1D cache refill, write"
39 "PublicDescription": "Attributable Level 1 data cache Write-Back, victim",
42 "BriefDescription": "L1D cache Write-Back, victim"
45 "PublicDescription": "Level 1 data cache Write-Back, cleaning and coherency",
48 "BriefDescription": "L1D cache Write-Back, cleaning and coherency"
63 "PublicDescription": "Attributable Level 1 data TLB refill, write",
66 "BriefDescription": "L1D tlb refill, write"
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| /kernel/linux/linux-6.6/tools/perf/pmu-events/arch/arm64/ |
| D | recommended.json | 9 "PublicDescription": "Attributable Level 1 data cache access, write",
12 "BriefDescription": "L1D cache access, write"
21 "PublicDescription": "Attributable Level 1 data cache refill, write",
24 "BriefDescription": "L1D cache refill, write"
39 "PublicDescription": "Attributable Level 1 data cache Write-Back, victim",
42 "BriefDescription": "L1D cache Write-Back, victim"
45 "PublicDescription": "Level 1 data cache Write-Back, cleaning and coherency",
48 "BriefDescription": "L1D cache Write-Back, cleaning and coherency"
63 "PublicDescription": "Attributable Level 1 data TLB refill, write",
66 "BriefDescription": "L1D tlb refill, write"
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| /kernel/linux/linux-6.6/tools/testing/selftests/kvm/x86_64/ |
| D | hyperv_features.c | 27 bool write; member
49 if (msr->write) in guest_msr()
52 if (!vector && (!msr->write || !is_write_only_msr(msr->idx))) in guest_msr()
58 msr->idx, msr->write ? "WR" : "RD", vector); in guest_msr()
62 msr->idx, msr->write ? "WR" : "RD", vector); in guest_msr()
67 if (msr->write) in guest_msr()
172 msr->write = false; in guest_test_msrs_access()
177 msr->write = false; in guest_test_msrs_access()
187 msr->write = true; in guest_test_msrs_access()
193 msr->write = false; in guest_test_msrs_access()
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| /kernel/linux/linux-5.10/arch/arm/mach-pxa/include/mach/ |
| D | regs-uart.h | 12 #define FFTHR __REG(0x40100000) /* Transmit Holding Register (write only) */
13 #define FFIER __REG(0x40100004) /* Interrupt Enable Register (read/write) */
15 #define FFFCR __REG(0x40100008) /* FIFO Control Register (write only) */
16 #define FFLCR __REG(0x4010000C) /* Line Control Register (read/write) */
17 #define FFMCR __REG(0x40100010) /* Modem Control Register (read/write) */
20 #define FFSPR __REG(0x4010001C) /* Scratch Pad Register (read/write) */
21 #define FFISR __REG(0x40100020) /* Infrared Selection Register (read/write) */
22 #define FFDLL __REG(0x40100000) /* Divisor Latch Low Register (DLAB = 1) (read/write) */
23 #define FFDLH __REG(0x40100004) /* Divisor Latch High Register (DLAB = 1) (read/write) */
28 #define BTTHR __REG(0x40200000) /* Transmit Holding Register (write only) */
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| /kernel/linux/linux-6.6/include/trace/events/ |
| D | mmap_lock.h | 18 TP_PROTO(struct mm_struct *mm, const char *memcg_path, bool write),
20 TP_ARGS(mm, memcg_path, write),
25 __field(bool, write)
31 __entry->write = write;
35 "mm=%p memcg_path=%s write=%s",
38 __entry->write ? "true" : "false"
45 bool write), \
46 TP_ARGS(mm, memcg_path, write), \
54 TP_PROTO(struct mm_struct *mm, const char *memcg_path, bool write,
57 TP_ARGS(mm, memcg_path, write, success),
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| /kernel/linux/linux-6.6/Documentation/ABI/testing/ |
| D | sysfs-class-bdi | 32 (read-write)
38 total write-back cache that relates to its current average
42 percentage of the write-back cache to a particular device.
45 (read-write)
52 total write-back cache that relates to its current average
56 of the write-back cache to a particular device. The value is
60 (read-write)
67 given percentage of the write-back cache. This is useful in
69 most of the write-back cache. For example in case of an NFS
73 (read-write)
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| /kernel/linux/linux-6.6/kernel/ |
| D | sysctl.c | 106 * enum sysctl_writes_mode - supported sysctl write modes
108 * @SYSCTL_WRITES_LEGACY: each write syscall must fully contain the sysctl value
116 * sent to the write syscall. If dealing with strings respect the file
121 * These write modes control how current file position affects the behavior of
122 * updating sysctl values through the proc interface on each write.
146 static int _proc_do_string(char *data, int maxlen, int write, in _proc_do_string() argument
157 if (write) { in _proc_do_string()
245 * @write: %TRUE if this is a write to the sysctl file
259 int proc_dostring(struct ctl_table *table, int write, in proc_dostring() argument
262 if (write) in proc_dostring()
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| /kernel/linux/linux-6.6/drivers/net/ethernet/aquantia/atlantic/macsec/ |
| D | macsec_api.h | 57 /*! Pack the fields of rec, and write the packed data into the
59 * rec - [IN] The bitfield values to write to the table row.
60 * table_index - The table row to write(max 23).
75 /*! Pack the fields of rec, and write the packed data into the
77 * rec - [IN] The bitfield values to write to the table row.
78 * table_index - The table row to write (max 47).
93 /*! Pack the fields of rec, and write the packed data into the
95 * rec - [IN] The bitfield values to write to the table row.
96 * table_index - The table row to write (max 31).
111 /*! Pack the fields of rec, and write the packed data into the
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| /kernel/linux/linux-5.10/drivers/net/ethernet/aquantia/atlantic/macsec/ |
| D | macsec_api.h | 57 /*! Pack the fields of rec, and write the packed data into the
59 * rec - [IN] The bitfield values to write to the table row.
60 * table_index - The table row to write(max 23).
75 /*! Pack the fields of rec, and write the packed data into the
77 * rec - [IN] The bitfield values to write to the table row.
78 * table_index - The table row to write (max 47).
93 /*! Pack the fields of rec, and write the packed data into the
95 * rec - [IN] The bitfield values to write to the table row.
96 * table_index - The table row to write (max 31).
111 /*! Pack the fields of rec, and write the packed data into the
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| /kernel/linux/linux-6.6/tools/testing/selftests/bpf/ |
| D | generate_udp_fragments.py | 8 fragmented packets in C, it is much harder to read and write
10 easy to read / write.
12 So we choose to write this script that generates a valid C
33 f.write("// SPDX-License-Identifier: GPL-2.0\n")
34 f.write("/* DO NOT EDIT -- this file is generated */\n")
35 f.write("\n")
36 f.write("#ifndef _IP_CHECK_DEFRAG_FRAGS_H\n")
37 f.write("#define _IP_CHECK_DEFRAG_FRAGS_H\n")
38 f.write("\n")
39 f.write("#include <stdint.h>\n")
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| /kernel/linux/linux-6.6/tools/perf/pmu-events/arch/x86/snowridgex/ |
| D | uncore-memory.json | 13 "BriefDescription": "write requests to memory controller. Derived from unc_m_cas_count.wr",
17 …"PublicDescription": "Counts the total number of DRAM Write CAS commands issued, w/ and w/o auto-p…
95 "BriefDescription": "All DRAM write CAS commands issued",
99 …"PublicDescription": "Counts the total number of DRAM Write CAS commands issued, w/ and w/o auto-p…
342 …ommands. : Precharge due to write : Counts the number of DRAM Precharge commands sent on this chan…
379 …erally do not expect to see RPQ become full except for potentially during Write Major Mode or whil…
387 …erally do not expect to see RPQ become full except for potentially during Write Major Mode or whil…
443 "BriefDescription": "Write Pending Queue Full Cycles",
447 …Write Pending Queue Full Cycles : Counts the number of cycles when the Write Pending Queue is full…
451 "BriefDescription": "Write Pending Queue Full Cycles",
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| /kernel/linux/linux-5.10/tools/perf/pmu-events/arch/x86/cascadelakex/ |
| D | uncore-memory.json | 13 "BriefDescription": "write requests to memory controller. Derived from unc_m_cas_count.wr",
77 …"BriefDescription": "Write requests allocated in the PMM Write Pending Queue for Intel Optane DC p…
85 …"BriefDescription": "Write requests allocated in the PMM Write Pending Queue for Intel Optane DC p…
102 …"BriefDescription": "Intel Optane DC persistent memory bandwidth write (MB). Derived from unc_m_pm…
105 "EventName": "UNC_M_PMM_BANDWIDTH.WRITE",
143 "BriefDescription": "DRAM Page Activate commands sent due to a write request",
148 …ption": "Counts DRAM Page Activate commands sent on this channel due to a write request to the iMC…
158 …write on DRAM, so this event increments for every read and write. This event counts whether AutoPr…
168 …write on DRAM, and this event increments for every regular read. This event only counts regular r…
178 …write, on a per channel basis. CAS commands are issued to specify the address to read or write on…
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| /kernel/linux/linux-6.6/tools/perf/pmu-events/arch/arm64/fujitsu/a64fx/ |
| D | bus.json | 21 …"PublicDescription": "This event counts write transactions from measured CMG to CMG0, if measured …
24 …"BriefDescription": "This event counts write transactions from measured CMG to CMG0, if measured C…
27 …"PublicDescription": "This event counts write transactions from measured CMG to CMG1, if measured …
30 …"BriefDescription": "This event counts write transactions from measured CMG to CMG1, if measured C…
33 …"PublicDescription": "This event counts write transactions from measured CMG to CMG2, if measured …
36 …"BriefDescription": "This event counts write transactions from measured CMG to CMG2, if measured C…
39 …"PublicDescription": "This event counts write transactions from measured CMG to CMG3, if measured …
42 …"BriefDescription": "This event counts write transactions from measured CMG to CMG3, if measured C…
45 … "PublicDescription": "This event counts write transactions from measured CMG to tofu controller.",
48 "BriefDescription": "This event counts write transactions from measured CMG to tofu controller."
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| /kernel/linux/linux-6.6/arch/loongarch/kernel/ |
| D | unaligned.c | 252 bool sign, write; in emulate_load_store_insn() local
266 write = false; in emulate_load_store_insn()
271 write = false; in emulate_load_store_insn()
276 write = true; in emulate_load_store_insn()
281 write = false; in emulate_load_store_insn()
286 write = false; in emulate_load_store_insn()
291 write = true; in emulate_load_store_insn()
296 write = false; in emulate_load_store_insn()
301 write = true; in emulate_load_store_insn()
307 write = false; in emulate_load_store_insn()
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| /kernel/linux/linux-5.10/arch/loongarch/kernel/ |
| D | unaligned.c | 252 bool sign, write; in emulate_load_store_insn() local
266 write = false; in emulate_load_store_insn()
271 write = false; in emulate_load_store_insn()
276 write = true; in emulate_load_store_insn()
281 write = false; in emulate_load_store_insn()
286 write = false; in emulate_load_store_insn()
291 write = true; in emulate_load_store_insn()
296 write = false; in emulate_load_store_insn()
301 write = true; in emulate_load_store_insn()
307 write = false; in emulate_load_store_insn()
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| /kernel/linux/linux-5.10/Documentation/filesystems/ |
| D | zonefs.rst | 12 device support (e.g. f2fs), zonefs does not hide the sequential write
14 write zones of the device must be written sequentially starting from the end
38 conventional zones. Any read or write access can be executed, similarly to a
41 sequentially. Each sequential zone has a write pointer maintained by the
42 device that keeps track of the mandatory start LBA position of the next write
43 to the device. As a result of this write constraint, LBAs in a sequential zone
53 to, for instance, reduce internal write amplification due to garbage collection.
73 information. File sizes come from the device zone type and write pointer
80 state to make it read-only, preventing any data write.
94 For sequential write zones, the sub-directory "seq" is used.
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| /kernel/linux/linux-5.10/arch/mips/kernel/ |
| D | cps-vec-ns16550.S | 32 * _mips_cps_putc() - write a character to the UART
33 * @a0: ASCII character to write
45 * _mips_cps_puts() - write a string to the UART
49 * Write a null-terminated ASCII string to the UART.
65 * _mips_cps_putx4 - write a 4b hex value to the UART
66 * @a0: the 4b value to write to the UART
69 * Write a single hexadecimal character to the UART.
82 * _mips_cps_putx8 - write an 8b hex value to the UART
83 * @a0: the 8b value to write to the UART
86 * Write an 8 bit value (ie. 2 hexadecimal characters) to the UART.
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| /kernel/linux/linux-6.6/arch/mips/kernel/ |
| D | cps-vec-ns16550.S | 32 * _mips_cps_putc() - write a character to the UART
33 * @a0: ASCII character to write
45 * _mips_cps_puts() - write a string to the UART
49 * Write a null-terminated ASCII string to the UART.
65 * _mips_cps_putx4 - write a 4b hex value to the UART
66 * @a0: the 4b value to write to the UART
69 * Write a single hexadecimal character to the UART.
82 * _mips_cps_putx8 - write an 8b hex value to the UART
83 * @a0: the 8b value to write to the UART
86 * Write an 8 bit value (ie. 2 hexadecimal characters) to the UART.
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