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module/*.ko: prune .data, global .rodata

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Evaluated every variable that lives in .data (and globals in .rodata)
in the kernel modules, and constified/eliminated/localised them
appropriately. This means that all read-only data is now actually
read-only data, and, if possible, at file scope. A lot of previously-
global-symbols became inlinable (and inlined!) constants. Probably
not in a big Wowee Performance Moment, but hey.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12899
This commit is contained in:
наб
2022-01-15 00:37:55 +01:00
committed by GitHub
parent 7adc190098
commit 18168da727
147 changed files with 781 additions and 876 deletions
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module/zfs/dsl_scan.c
+23 -22
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@@ -136,7 +136,7 @@ extern int zfs_vdev_async_write_active_min_dirty_percent;
* this value can be set to 1 to enable checking before scanning each
* block.
*/
int zfs_scan_strict_mem_lim = B_FALSE;
static int zfs_scan_strict_mem_lim = B_FALSE;
/*
* Maximum number of parallelly executed bytes per leaf vdev. We attempt
@@ -146,41 +146,42 @@ int zfs_scan_strict_mem_lim = B_FALSE;
* overload the drives with I/O, since that is protected by
* zfs_vdev_scrub_max_active.
*/
unsigned long zfs_scan_vdev_limit = 4 << 20;
static unsigned long zfs_scan_vdev_limit = 4 << 20;
int zfs_scan_issue_strategy = 0;
int zfs_scan_legacy = B_FALSE; /* don't queue & sort zios, go direct */
unsigned long zfs_scan_max_ext_gap = 2 << 20; /* in bytes */
static int zfs_scan_issue_strategy = 0;
static int zfs_scan_legacy = B_FALSE; /* don't queue & sort zios, go direct */
static unsigned long zfs_scan_max_ext_gap = 2 << 20; /* in bytes */
/*
* fill_weight is non-tunable at runtime, so we copy it at module init from
* zfs_scan_fill_weight. Runtime adjustments to zfs_scan_fill_weight would
* break queue sorting.
*/
int zfs_scan_fill_weight = 3;
static int zfs_scan_fill_weight = 3;
static uint64_t fill_weight;
/* See dsl_scan_should_clear() for details on the memory limit tunables */
uint64_t zfs_scan_mem_lim_min = 16 << 20; /* bytes */
uint64_t zfs_scan_mem_lim_soft_max = 128 << 20; /* bytes */
int zfs_scan_mem_lim_fact = 20; /* fraction of physmem */
int zfs_scan_mem_lim_soft_fact = 20; /* fraction of mem lim above */
static const uint64_t zfs_scan_mem_lim_min = 16 << 20; /* bytes */
static const uint64_t zfs_scan_mem_lim_soft_max = 128 << 20; /* bytes */
static int zfs_scan_mem_lim_fact = 20; /* fraction of physmem */
static int zfs_scan_mem_lim_soft_fact = 20; /* fraction of mem lim above */
int zfs_scrub_min_time_ms = 1000; /* min millisecs to scrub per txg */
int zfs_obsolete_min_time_ms = 500; /* min millisecs to obsolete per txg */
int zfs_free_min_time_ms = 1000; /* min millisecs to free per txg */
int zfs_resilver_min_time_ms = 3000; /* min millisecs to resilver per txg */
int zfs_scan_checkpoint_intval = 7200; /* in seconds */
static int zfs_scrub_min_time_ms = 1000; /* min millis to scrub per txg */
static int zfs_obsolete_min_time_ms = 500; /* min millis to obsolete per txg */
static int zfs_free_min_time_ms = 1000; /* min millis to free per txg */
static int zfs_resilver_min_time_ms = 3000; /* min millis to resilver per txg */
static int zfs_scan_checkpoint_intval = 7200; /* in seconds */
int zfs_scan_suspend_progress = 0; /* set to prevent scans from progressing */
int zfs_no_scrub_io = B_FALSE; /* set to disable scrub i/o */
int zfs_no_scrub_prefetch = B_FALSE; /* set to disable scrub prefetch */
enum ddt_class zfs_scrub_ddt_class_max = DDT_CLASS_DUPLICATE;
static int zfs_no_scrub_io = B_FALSE; /* set to disable scrub i/o */
static int zfs_no_scrub_prefetch = B_FALSE; /* set to disable scrub prefetch */
static const enum ddt_class zfs_scrub_ddt_class_max = DDT_CLASS_DUPLICATE;
/* max number of blocks to free in a single TXG */
unsigned long zfs_async_block_max_blocks = ULONG_MAX;
static unsigned long zfs_async_block_max_blocks = ULONG_MAX;
/* max number of dedup blocks to free in a single TXG */
unsigned long zfs_max_async_dedup_frees = 100000;
static unsigned long zfs_max_async_dedup_frees = 100000;
int zfs_resilver_disable_defer = 0; /* set to disable resilver deferring */
/* set to disable resilver deferring */
static int zfs_resilver_disable_defer = B_FALSE;
/*
* We wait a few txgs after importing a pool to begin scanning so that
@@ -201,7 +202,7 @@ int zfs_resilver_disable_defer = 0; /* set to disable resilver deferring */
/*
* Enable/disable the processing of the free_bpobj object.
*/
int zfs_free_bpobj_enabled = 1;
static int zfs_free_bpobj_enabled = 1;
/* the order has to match pool_scan_type */
static scan_cb_t *scan_funcs[POOL_SCAN_FUNCS] = {