| /linux/fs/jfs/ |
| H A D | jfs_logmgr.c | 8 * jfs_logmgr.c: log manager
15 * log buffer manager:
16 * special purpose buffer manager supporting log i/o requirements.
17 * per log serial pageout of logpage
25 * log page during the pageout of previous/current log page(s) are
29 * transactions are committed asynchronously when the log page
33 * . a per log lock serialize log write.
34 * . a per log lock serialize group commit.
35 * . a per log lock serialize log open/close;
37 * TBD log integrity:
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| H A D | jfs_logmgr.h | 15 * log manager configuration parameters
18 /* log page size */
22 #define LOGPAGES 16 /* Log pages per mounted file system */
25 * log logical volume
27 * a log is used to make the commit operation on journalled
29 * a log is implemented with a logical volume.
30 * there is one log per logical volume group.
32 * block 0 of the log logical volume is not used (ipl etc).
33 * block 1 contains a log "superblock" and is used by logFormat(),
35 * of the log but is not otherwise used during normal processing.
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| H A D | jfs_umount.c | 44 struct jfs_log *log; in jfs_umount() local
50 * update superblock and close log in jfs_umount()
52 * if mounted read-write and log based recovery was enabled in jfs_umount()
54 if ((log = sbi->log)) in jfs_umount()
56 * Wait for outstanding transactions to be written to log: in jfs_umount()
58 jfs_flush_journal(log, 2); in jfs_umount()
103 * consistent state) and log superblock active file system in jfs_umount()
106 if (log) { /* log = NULL if read-only mount */ in jfs_umount()
110 * close log: in jfs_umount()
112 * remove file system from log active file system list. in jfs_umount()
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| /linux/fs/xfs/ |
| H A D | xfs_log.c | 45 struct xlog *log);
51 struct xlog *log);
54 struct xlog *log,
58 struct xlog *log,
64 struct xlog *log,
69 struct xlog *log,
78 struct xlog *log);
110 struct xlog *log, in xlog_grant_return_space() argument
114 int64_t diff = xlog_lsn_sub(log, new_head, old_head); in xlog_grant_return_space()
116 xlog_grant_sub_space(&log->l_reserve_head, diff); in xlog_grant_return_space()
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| H A D | xfs_log_recover.c | 51 * Verify the log-relative block number and length in basic blocks are valid for
52 * an operation involving the given XFS log buffer. Returns true if the fields
57 struct xlog *log, in xlog_verify_bno() argument
61 if (blk_no < 0 || blk_no >= log->l_logBBsize) in xlog_verify_bno()
63 if (bbcount <= 0 || (blk_no + bbcount) > log->l_logBBsize) in xlog_verify_bno()
69 * Allocate a buffer to hold log data. The buffer needs to be able to map to
70 * a range of nbblks basic blocks at any valid offset within the log.
74 struct xlog *log, in xlog_alloc_buffer() argument
78 * Pass log block 0 since we don't have an addr yet, buffer will be in xlog_alloc_buffer()
81 if (XFS_IS_CORRUPT(log->l_mp, !xlog_verify_bno(log, 0, nbblks))) { in xlog_alloc_buffer()
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| H A D | xfs_log_cil.c | 35 struct xlog *log) in xlog_cil_ticket_alloc() argument
39 tic = xlog_ticket_alloc(log, 0, 1, 0); in xlog_cil_ticket_alloc()
53 struct xlog *log = cil->xc_log; in xlog_cil_set_iclog_hdr_count() local
56 (XLOG_CIL_BLOCKING_SPACE_LIMIT(log) / in xlog_cil_set_iclog_hdr_count()
57 (log->l_iclog_size - log->l_iclog_hsize))); in xlog_cil_set_iclog_hdr_count()
61 * Check if the current log item was first committed in this sequence.
62 * We can't rely on just the log item being in the CIL, we have to check
78 * li_seq is written on the first commit of a log item to record the in xlog_item_in_current_chkpt()
194 * After the first stage of log recovery is done, we know where the head and
195 * tail of the log are. We need this log initialisation done before we can
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| /linux/drivers/md/ |
| H A D | raid5-cache.c | 18 #include "raid5-log.h"
28 * log->max_free_space is min(1/4 disk size, 10G reclaimable space).
30 * In write through mode, the reclaim runs every log->max_free_space.
70 * writes are committed from the log device. Therefore, a stripe in
72 * - write to log device
87 sector_t device_size; /* log device size, round to
92 sector_t last_checkpoint; /* log tail. where recovery scan
94 u64 last_cp_seq; /* log tail sequence */
96 sector_t log_start; /* log head. where new data appends */
97 u64 seq; /* log head sequence */
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| H A D | dm-log.c | 14 #include <linux/dm-dirty-log.h>
18 #define DM_MSG_PREFIX "dirty region log"
56 * Log modules are named "dm-log-" followed by the 'type_name'.
58 * This function will first try the module "dm-log-<type_name>",
62 * 'dm-log-clustered-disk' then 'dm-log-clustered'.
80 DMWARN("No memory left to attempt log module load for \"%s\"", in get_type()
85 while (request_module("dm-log-%s", type_name_dup) || in get_type()
154 struct dm_dirty_log *log; in dm_dirty_log_create() local
156 log = kmalloc_obj(*log); in dm_dirty_log_create()
157 if (!log) in dm_dirty_log_create()
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| H A D | raid5-ppl.c | 3 * Partial Parity Log for closing the RAID5 write hole
15 #include "raid5-log.h"
76 * data+parity is written). The log->io_list tracks all io_units of a log
97 atomic64_t seq; /* current log write sequence number */
116 struct ppl_conf *ppl_conf; /* shared between all log instances */
119 * this log instance */
124 struct list_head io_list; /* all io_units of this log */
136 struct ppl_log *log; member
143 u64 seq; /* sequence number of this log write */
144 struct list_head log_sibling; /* log->io_list */
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| H A D | raid5-log.h | 7 int r5l_write_stripe(struct r5l_log *log, struct stripe_head *head_sh);
8 void r5l_write_stripe_run(struct r5l_log *log);
9 void r5l_flush_stripe_to_raid(struct r5l_log *log);
11 int r5l_handle_flush_request(struct r5l_log *log, struct bio *bio);
12 void r5l_quiesce(struct r5l_log *log, int quiesce);
14 bool r5c_is_writeback(struct r5l_log *log);
21 void r5l_wake_reclaim(struct r5l_log *log, sector_t space);
24 int r5c_cache_data(struct r5l_log *log, struct stripe_head *sh);
32 int r5l_start(struct r5l_log *log);
61 if (conf->log) { in log_stripe()
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| /linux/drivers/pci/pcie/ |
| H A D | tlp.c | 3 * PCIe TLP Log handling
17 * aer_tlp_log_len - Calculate AER Capability TLP Header/Prefix Log length
21 * Return: TLP Header/Prefix Log length
35 * dpc_tlp_log_len - Calculate DPC RP PIO TLP Header/Prefix Log length
38 * Return: TLP Header/Prefix Log length
42 /* Remove ImpSpec Log register from the count */ in dpc_tlp_log_len()
51 * pcie_read_tlp_log - read TLP Header Log
53 * @where: PCI Config offset of TLP Header Log
54 * @where2: PCI Config offset of TLP Prefix Log
55 * @tlp_len: TLP Log length (Header Log + TLP Prefix Log in DWORDs)
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| /linux/fs/ntfs3/ |
| H A D | fslog.c | 18 * LOG FILE structs
29 __le32 sys_page_size; // 0x10: Page size of the system which initialized the log.
30 __le32 page_size; // 0x14: Log page size used for this log file.
53 /* Two copies of these will exist at the beginning of the log file */
55 __le64 current_lsn; // 0x00: Current logical end of log file.
62 __le64 l_size; // 0x18: Usable log file size.
64 __le16 rec_hdr_len; // 0x24: Log page data offset.
65 __le16 data_off; // 0x26: Log page data length.
193 __le32 undo_records; // 0x20: Number of undo log records pending abort
232 /* The following type defines the different log record types. */
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| /linux/Documentation/admin-guide/device-mapper/ |
| H A D | log-writes.rst | 2 dm-log-writes
5 This target takes 2 devices, one to pass all IO to normally, and one to log all
9 able to take arbitrary data from userspace to insert into the log. The data
10 that is in the WRITE requests is copied into the log to make the replay happen
13 Log Ordering
16 We log things in order of completion once we are sure the write is no longer in
19 the log in a way that correlates to what is on disk and not what is in cache,
24 the FLUSH request completes we log all of the WRITEs and then the FLUSH. Only
31 The log would show the following:
52 which isn't quite what happened and wouldn't be caught during the log replay.
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| H A D | dm-log.rst | 16 dm_dirty_log_type in include/linux/dm-dirty-log.h). Various different
23 disk drivers/md/dm-log.c
24 core drivers/md/dm-log.c
25 userspace drivers/md/dm-log-userspace* include/linux/dm-log-userspace.h
28 The "disk" log type
30 This log implementation commits the log state to disk. This way, the
33 The "core" log type
35 This log implementation keeps the log state in memory. The log state
38 available for storing log state.
40 The "userspace" log type
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| /linux/drivers/char/tpm/eventlog/ |
| H A D | efi.c | 16 /* read binary bios log from EFI configuration table */
23 struct tpm_bios_log *log; in tpm_read_log_efi() local
35 log = &chip->log; in tpm_read_log_efi()
39 pr_err("Could not map UEFI TPM log table !\n"); in tpm_read_log_efi()
47 pr_warn("UEFI TPM log area empty\n"); in tpm_read_log_efi()
54 pr_err("Could not map UEFI TPM log table payload!\n"); in tpm_read_log_efi()
59 log->bios_event_log = devm_kmemdup(&chip->dev, log_tbl->log, log_size, GFP_KERNEL); in tpm_read_log_efi()
60 if (!log->bios_event_log) { in tpm_read_log_efi()
65 log->bios_event_log_end = log->bios_event_log + log_size; in tpm_read_log_efi()
79 pr_err("Could not map UEFI TPM final log\n"); in tpm_read_log_efi()
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| /linux/drivers/gpu/drm/xe/ |
| H A D | xe_guc_log.c | 96 log_to_guc(struct xe_guc_log *log) in log_to_guc() argument
98 return container_of(log, struct xe_guc, log); in log_to_guc()
102 log_to_gt(struct xe_guc_log *log) in log_to_gt() argument
104 return container_of(log, struct xe_gt, uc.guc.log); in log_to_gt()
108 log_to_xe(struct xe_guc_log *log) in log_to_xe() argument
110 return gt_to_xe(log_to_gt(log)); in log_to_xe()
113 static struct xe_guc_log_snapshot *xe_guc_log_snapshot_alloc(struct xe_guc_log *log, bool atomic) in xe_guc_log_snapshot_alloc() argument
124 * NB: kmalloc has a hard limit well below the maximum GuC log buffer size. in xe_guc_log_snapshot_alloc()
128 snapshot->size = xe_bo_size(log->bo); in xe_guc_log_snapshot_alloc()
158 * xe_guc_log_snapshot_free - free a previously captured GuC log snapshot
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| /linux/fs/xfs/libxfs/ |
| H A D | xfs_log_recover.h | 10 * Each log item type (XFS_LI_*) gets its own xlog_recover_item_ops to
11 * define how recovery should work for that type of log item.
16 /* Sorting hat for log items as they're read in. */
28 * Help sort recovered log items into the order required to replay them
29 * correctly. Log item types that always use XLOG_REORDER_ITEM_LIST do
37 void (*ra_pass2)(struct xlog *log, struct xlog_recover_item *item);
40 int (*commit_pass1)(struct xlog *log, struct xlog_recover_item *item);
43 * This function should do whatever work is needed for pass2 of log
47 * the recovered item to construct an in-core log intent item and
48 * insert it into the AIL. The in-core log intent item should have 1
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| /linux/drivers/net/ethernet/meta/fbnic/ |
| H A D | fbnic_fw_log.c | 38 struct fbnic_fw_log *log = &fbd->fw_log; in fbnic_fw_log_init() local
49 INIT_LIST_HEAD(&log->entries); in fbnic_fw_log_init()
50 log->size = FBNIC_FW_LOG_SIZE; in fbnic_fw_log_init()
51 log->data_start = data; in fbnic_fw_log_init()
52 log->data_end = data + FBNIC_FW_LOG_SIZE; in fbnic_fw_log_init()
59 struct fbnic_fw_log *log = &fbd->fw_log; in fbnic_fw_log_free() local
64 INIT_LIST_HEAD(&log->entries); in fbnic_fw_log_free()
65 log->size = 0; in fbnic_fw_log_free()
66 vfree(log->data_start); in fbnic_fw_log_free()
67 log->data_start = NULL; in fbnic_fw_log_free()
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| /linux/include/linux/ |
| H A D | dm-dirty-log.h | 6 * Device-Mapper dirty region log.
36 int (*ctr)(struct dm_dirty_log *log, struct dm_target *ti,
38 void (*dtr)(struct dm_dirty_log *log);
41 * There are times when we don't want the log to touch
44 int (*presuspend)(struct dm_dirty_log *log);
45 int (*postsuspend)(struct dm_dirty_log *log);
46 int (*resume)(struct dm_dirty_log *log);
49 * Retrieves the smallest size of region that the log can
52 uint32_t (*get_region_size)(struct dm_dirty_log *log);
58 int (*is_clean)(struct dm_dirty_log *log, region_t region);
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| /linux/include/uapi/linux/ |
| H A D | dm-log-userspace.h | 15 * The device-mapper userspace log module consists of a kernel component and
17 * in dm-dirty-log.h. Its purpose is simply to pass the parameters and
22 * dirty log API. Each of these is described in more detail below.
50 * DM_ULOG_CTR corresponds to (found in dm-dirty-log.h):
51 * int (*ctr)(struct dm_dirty_log *log, struct dm_target *ti,
58 * as the backing store for the log data. 'dm_get_device' will be called
61 * for log data, 'data_size' in the dm_ulog_request struct should be 0.
64 * will be used by all request types to a specific log. The constructor must
69 * data field with the log device if necessary, and setting 'data_size'
75 * DM_ULOG_DTR corresponds to (found in dm-dirty-log.h):
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| /linux/tools/testing/selftests/rcutorture/bin/ |
| H A D | kvm-remote.sh | 77 touch "$oldrun/remote-log"
78 echo $scriptname $args >> "$oldrun/remote-log"
79 echo | tee -a "$oldrun/remote-log"
80 echo " ----" kvm.sh output: "(`date`)" | tee -a "$oldrun/remote-log"
81 cat $T/kvm.sh.out | tee -a "$oldrun/remote-log"
88 echo $scriptname: kvm-again.sh failed exit code $? | tee -a "$oldrun/remote-log"
89 cat $T/kvm-again.sh.out | tee -a "$oldrun/remote-log"
100 touch "$oldrun/remote-log"
101 echo $scriptname $args >> "$oldrun/remote-log"
106 echo $scriptname: kvm-again.sh failed exit code $? | tee -a "$oldrun/remote-log"
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| /linux/Documentation/ABI/stable/ |
| H A D | sysfs-firmware-opal-elog | 5 This directory exposes error log entries retrieved
8 Each error log is identified by a unique ID and will
11 Each log entry has a directory in /sys/firmware/opal/elog.
13 Log entries may be purged by the service processor
15 Linux if there is no room for more log entries.
17 In the event that Linux has retrieved the log entries
19 the service processor needs more room for log entries,
20 the only remaining copy of a log message may be in
26 The service processor may be able to store more log
31 The raw log format is a binary format. We currently
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| /linux/drivers/staging/greybus/ |
| H A D | log.c | 3 * Greybus driver for the log protocol
32 dev_err(dev, "log request too small (%zu < %zu)\n", in gb_log_request_handler()
39 dev_err(dev, "log request wrong size %d vs %zu\n", len, in gb_log_request_handler()
44 dev_err(dev, "log request of 0 bytes?\n"); in gb_log_request_handler()
49 dev_err(dev, "log request too big: %d\n", len); in gb_log_request_handler()
70 struct gb_log *log; in gb_log_probe() local
80 log = kzalloc_obj(*log); in gb_log_probe()
81 if (!log) in gb_log_probe()
91 log->connection = connection; in gb_log_probe()
92 greybus_set_drvdata(bundle, log); in gb_log_probe()
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| /linux/arch/m68k/fpsp040/ |
| H A D | slog2.S | 37 | Step 1. Call slognd to obtain Y = log(X), the natural log of X.
38 | Notes: Even if X is denormalized, log(X) is always normalized.
40 | Step 2. Compute log_10(X) = log(X) * (1/log(10)).
52 | Step 1. Call sLogN to obtain Y = log(X), the natural log of X.
54 | Step 2. Compute log_10(X) = log(X) * (1/log(10)).
66 | Step 1. Call slognd to obtain Y = log(X), the natural log of X.
67 | Notes: Even if X is denormalized, log(X) is always normalized.
69 | Step 2. Compute log_10(X) = log(X) * (1/log(2)).
89 | Step 3. Call sLogN to obtain Y = log(X), the natural log of X.
91 | Step 4. Compute log_2(X) = log(X) * (1/log(2)).
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| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-fs-xfs | 1 What: /sys/fs/xfs/<disk>/log/log_head_lsn
6 The log sequence number (LSN) of the current head of the
7 log. The LSN is exported in "cycle:basic block" format.
10 What: /sys/fs/xfs/<disk>/log/log_tail_lsn
15 The log sequence number (LSN) of the current tail of the
16 log. The LSN is exported in "cycle:basic block" format.
18 What: /sys/fs/xfs/<disk>/log/reserve_grant_head_bytes
23 The current state of the log reserve grant head. It
24 represents the total log reservation of all currently
28 What: /sys/fs/xfs/<disk>/log/write_grant_head_bytes
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