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Make module tunables cross platform

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Adds ZFS_MODULE_PARAM to abstract module parameter
setting to operating systems other than Linux.

Reviewed-by: Jorgen Lundman <lundman@lundman.net>
Reviewed-by: Igor Kozhukhov <igor@dilos.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes #9230
This commit is contained in:
Matthew Macy
2019-09-05 14:49:49 -07:00
committed by Brian Behlendorf
parent 65a91b166e
commit 03fdcb9adc
43 changed files with 544 additions and 660 deletions
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module/zfs/spa_log_spacemap.c
+30 -43
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@@ -1282,54 +1282,41 @@ spa_ld_log_spacemaps(spa_t *spa)
return (error);
}
#if defined(_KERNEL)
/* BEGIN CSTYLED */
module_param(zfs_keep_log_spacemaps_at_export, int, 0644);
MODULE_PARM_DESC(zfs_keep_log_spacemaps_at_export,
"Prevent the log spacemaps from being flushed and destroyed "
"during pool export/destroy");
module_param(zfs_max_logsm_summary_length, ulong, 0644);
MODULE_PARM_DESC(zfs_max_logsm_summary_length,
"Maximum number of rows allowed in the summary of "
"the spacemap log");
module_param(zfs_max_log_walking, ulong, 0644);
MODULE_PARM_DESC(zfs_max_log_walking,
"The number of past TXGs that the flushing algorithm of the log "
"spacemap feature uses to estimate incoming log blocks");
module_param(zfs_min_metaslabs_to_flush, ulong, 0644);
MODULE_PARM_DESC(zfs_min_metaslabs_to_flush,
"Minimum number of metaslabs to flush per dirty TXG");
module_param(zfs_unflushed_log_block_pct, ulong, 0644);
MODULE_PARM_DESC(zfs_unflushed_log_block_pct,
"Tunable used to determine the number of blocks that can be "
"used for the spacemap log, expressed as a percentage of the "
" total number of metaslabs in the pool (e.g. 400 means the "
" number of log blocks is capped at 4 times the number of "
"metaslabs)");
module_param(zfs_unflushed_log_block_max, ulong, 0644);
MODULE_PARM_DESC(zfs_unflushed_log_block_max,
"Hard limit (upper-bound) in the size of the space map log "
"in terms of blocks.");
module_param(zfs_unflushed_log_block_min, ulong, 0644);
MODULE_PARM_DESC(zfs_unflushed_log_block_min,
"Lower-bound limit for the maximum amount of blocks in "
"log spacemap.");
module_param(zfs_unflushed_max_mem_amt, ulong, 0644);
MODULE_PARM_DESC(zfs_unflushed_max_mem_amt,
ZFS_MODULE_PARAM(zfs, zfs_, unflushed_max_mem_amt, ULONG, ZMOD_RW,
"Specific hard-limit in memory that ZFS allows to be used for "
"unflushed changes");
module_param(zfs_unflushed_max_mem_ppm, ulong, 0644);
MODULE_PARM_DESC(zfs_unflushed_max_mem_ppm,
ZFS_MODULE_PARAM(zfs, zfs_, unflushed_max_mem_ppm, ULONG, ZMOD_RW,
"Percentage of the overall system memory that ZFS allows to be "
"used for unflushed changes (value is calculated over 1000000 for "
"finer granularity");
ZFS_MODULE_PARAM(zfs, zfs_, unflushed_log_block_max, ULONG, ZMOD_RW,
"Hard limit (upper-bound) in the size of the space map log "
"in terms of blocks.");
ZFS_MODULE_PARAM(zfs, zfs_, unflushed_log_block_min, ULONG, ZMOD_RW,
"Lower-bound limit for the maximum amount of blocks allowed in "
"log spacemap (see zfs_unflushed_log_block_max)");
ZFS_MODULE_PARAM(zfs, zfs_, unflushed_log_block_pct, ULONG, ZMOD_RW,
"Tunable used to determine the number of blocks that can be used for "
"the spacemap log, expressed as a percentage of the total number of "
"metaslabs in the pool (e.g. 400 means the number of log blocks is "
"capped at 4 times the number of metaslabs)");
ZFS_MODULE_PARAM(zfs, zfs_, max_log_walking, ULONG, ZMOD_RW,
"The number of past TXGs that the flushing algorithm of the log "
"spacemap feature uses to estimate incoming log blocks");
ZFS_MODULE_PARAM(zfs, zfs_, max_logsm_summary_length, ULONG, ZMOD_RW,
"Maximum number of rows allowed in the summary of the spacemap log");
ZFS_MODULE_PARAM(zfs, zfs_, min_metaslabs_to_flush, ULONG, ZMOD_RW,
"Minimum number of metaslabs to flush per dirty TXG");
ZFS_MODULE_PARAM(zfs, zfs_, keep_log_spacemaps_at_export, INT, ZMOD_RW,
"Prevent the log spacemaps from being flushed and destroyed "
"during pool export/destroy");
/* END CSTYLED */
#endif