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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/spa_misc.c
+12 -13
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@@ -235,14 +235,13 @@
static avl_tree_t spa_namespace_avl;
kmutex_t spa_namespace_lock;
static kcondvar_t spa_namespace_cv;
int spa_max_replication_override = SPA_DVAS_PER_BP;
static const int spa_max_replication_override = SPA_DVAS_PER_BP;
static kmutex_t spa_spare_lock;
static avl_tree_t spa_spare_avl;
static kmutex_t spa_l2cache_lock;
static avl_tree_t spa_l2cache_avl;
kmem_cache_t *spa_buffer_pool;
spa_mode_t spa_mode_global = SPA_MODE_UNINIT;
#ifdef ZFS_DEBUG
@@ -304,25 +303,25 @@ int zfs_free_leak_on_eio = B_FALSE;
* has not completed in zfs_deadman_synctime_ms is considered "hung" resulting
* in one of three behaviors controlled by zfs_deadman_failmode.
*/
unsigned long zfs_deadman_synctime_ms = 600000UL;
unsigned long zfs_deadman_synctime_ms = 600000UL; /* 10 min. */
/*
* This value controls the maximum amount of time zio_wait() will block for an
* outstanding IO. By default this is 300 seconds at which point the "hung"
* behavior will be applied as described for zfs_deadman_synctime_ms.
*/
unsigned long zfs_deadman_ziotime_ms = 300000UL;
unsigned long zfs_deadman_ziotime_ms = 300000UL; /* 5 min. */
/*
* Check time in milliseconds. This defines the frequency at which we check
* for hung I/O.
*/
unsigned long zfs_deadman_checktime_ms = 60000UL;
unsigned long zfs_deadman_checktime_ms = 60000UL; /* 1 min. */
/*
* By default the deadman is enabled.
*/
int zfs_deadman_enabled = 1;
int zfs_deadman_enabled = B_TRUE;
/*
* Controls the behavior of the deadman when it detects a "hung" I/O.
@@ -332,7 +331,7 @@ int zfs_deadman_enabled = 1;
* continue - Attempt to recover from a "hung" I/O
* panic - Panic the system
*/
char *zfs_deadman_failmode = "wait";
const char *zfs_deadman_failmode = "wait";
/*
* The worst case is single-sector max-parity RAID-Z blocks, in which
@@ -384,9 +383,9 @@ int spa_asize_inflation = 24;
* See also the comments in zfs_space_check_t.
*/
int spa_slop_shift = 5;
uint64_t spa_min_slop = 128ULL * 1024 * 1024;
uint64_t spa_max_slop = 128ULL * 1024 * 1024 * 1024;
int spa_allocators = 4;
static const uint64_t spa_min_slop = 128ULL * 1024 * 1024;
static const uint64_t spa_max_slop = 128ULL * 1024 * 1024 * 1024;
static const int spa_allocators = 4;
void
@@ -420,15 +419,15 @@ spa_load_note(spa_t *spa, const char *fmt, ...)
/*
* By default dedup and user data indirects land in the special class
*/
int zfs_ddt_data_is_special = B_TRUE;
int zfs_user_indirect_is_special = B_TRUE;
static int zfs_ddt_data_is_special = B_TRUE;
static int zfs_user_indirect_is_special = B_TRUE;
/*
* The percentage of special class final space reserved for metadata only.
* Once we allocate 100 - zfs_special_class_metadata_reserve_pct we only
* let metadata into the class.
*/
int zfs_special_class_metadata_reserve_pct = 25;
static int zfs_special_class_metadata_reserve_pct = 25;
/*
* ==========================================================================