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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.c
+23 -21
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@@ -150,7 +150,7 @@ static const char *const zio_taskq_types[ZIO_TASKQ_TYPES] = {
* and interrupt) and then to reserve threads for ZIO_PRIORITY_NOW I/Os that
* need to be handled with minimum delay.
*/
const zio_taskq_info_t zio_taskqs[ZIO_TYPES][ZIO_TASKQ_TYPES] = {
static const zio_taskq_info_t zio_taskqs[ZIO_TYPES][ZIO_TASKQ_TYPES] = {
/* ISSUE ISSUE_HIGH INTR INTR_HIGH */
{ ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* NULL */
{ ZTI_N(8), ZTI_NULL, ZTI_SCALE, ZTI_NULL }, /* READ */
@@ -167,12 +167,12 @@ static boolean_t spa_has_active_shared_spare(spa_t *spa);
static int spa_load_impl(spa_t *spa, spa_import_type_t type, char **ereport);
static void spa_vdev_resilver_done(spa_t *spa);
uint_t zio_taskq_batch_pct = 80; /* 1 thread per cpu in pset */
uint_t zio_taskq_batch_tpq; /* threads per taskq */
boolean_t zio_taskq_sysdc = B_TRUE; /* use SDC scheduling class */
uint_t zio_taskq_basedc = 80; /* base duty cycle */
static uint_t zio_taskq_batch_pct = 80; /* 1 thread per cpu in pset */
static uint_t zio_taskq_batch_tpq; /* threads per taskq */
static const boolean_t zio_taskq_sysdc = B_TRUE; /* use SDC scheduling class */
static const uint_t zio_taskq_basedc = 80; /* base duty cycle */
boolean_t spa_create_process = B_TRUE; /* no process ==> no sysdc */
static const boolean_t spa_create_process = B_TRUE; /* no process => no sysdc */
/*
* Report any spa_load_verify errors found, but do not fail spa_load.
@@ -195,7 +195,7 @@ boolean_t spa_mode_readable_spacemaps = B_FALSE;
/*
* For debugging purposes: print out vdev tree during pool import.
*/
int spa_load_print_vdev_tree = B_FALSE;
static int spa_load_print_vdev_tree = B_FALSE;
/*
* A non-zero value for zfs_max_missing_tvds means that we allow importing
@@ -244,28 +244,28 @@ uint64_t zfs_max_missing_tvds_scan = 0;
/*
* Debugging aid that pauses spa_sync() towards the end.
*/
boolean_t zfs_pause_spa_sync = B_FALSE;
static const boolean_t zfs_pause_spa_sync = B_FALSE;
/*
* Variables to indicate the livelist condense zthr func should wait at certain
* points for the livelist to be removed - used to test condense/destroy races
*/
int zfs_livelist_condense_zthr_pause = 0;
int zfs_livelist_condense_sync_pause = 0;
static int zfs_livelist_condense_zthr_pause = 0;
static int zfs_livelist_condense_sync_pause = 0;
/*
* Variables to track whether or not condense cancellation has been
* triggered in testing.
*/
int zfs_livelist_condense_sync_cancel = 0;
int zfs_livelist_condense_zthr_cancel = 0;
static int zfs_livelist_condense_sync_cancel = 0;
static int zfs_livelist_condense_zthr_cancel = 0;
/*
* Variable to track whether or not extra ALLOC blkptrs were added to a
* livelist entry while it was being condensed (caused by the way we track
* remapped blkptrs in dbuf_remap_impl)
*/
int zfs_livelist_condense_new_alloc = 0;
static int zfs_livelist_condense_new_alloc = 0;
/*
* ==========================================================================
@@ -1048,6 +1048,7 @@ spa_taskqs_init(spa_t *spa, zio_type_t t, zio_taskq_type_t q)
if (batch)
flags |= TASKQ_DC_BATCH;
(void) zio_taskq_basedc;
tq = taskq_create_sysdc(name, value, 50, INT_MAX,
spa->spa_proc, zio_taskq_basedc, flags);
} else {
@@ -1249,12 +1250,12 @@ spa_activate(spa_t *spa, spa_mode_t mode)
spa->spa_mode = mode;
spa->spa_read_spacemaps = spa_mode_readable_spacemaps;
spa->spa_normal_class = metaslab_class_create(spa, zfs_metaslab_ops);
spa->spa_log_class = metaslab_class_create(spa, zfs_metaslab_ops);
spa->spa_normal_class = metaslab_class_create(spa, &zfs_metaslab_ops);
spa->spa_log_class = metaslab_class_create(spa, &zfs_metaslab_ops);
spa->spa_embedded_log_class =
metaslab_class_create(spa, zfs_metaslab_ops);
spa->spa_special_class = metaslab_class_create(spa, zfs_metaslab_ops);
spa->spa_dedup_class = metaslab_class_create(spa, zfs_metaslab_ops);
metaslab_class_create(spa, &zfs_metaslab_ops);
spa->spa_special_class = metaslab_class_create(spa, &zfs_metaslab_ops);
spa->spa_dedup_class = metaslab_class_create(spa, &zfs_metaslab_ops);
/* Try to create a covering process */
mutex_enter(&spa->spa_proc_lock);
@@ -1262,6 +1263,7 @@ spa_activate(spa_t *spa, spa_mode_t mode)
ASSERT(spa->spa_proc == &p0);
spa->spa_did = 0;
(void) spa_create_process;
#ifdef HAVE_SPA_THREAD
/* Only create a process if we're going to be around a while. */
if (spa_create_process && strcmp(spa->spa_name, TRYIMPORT_NAME) != 0) {
@@ -2281,9 +2283,9 @@ spa_load_verify_done(zio_t *zio)
* Maximum number of inflight bytes is the log2 fraction of the arc size.
* By default, we set it to 1/16th of the arc.
*/
int spa_load_verify_shift = 4;
int spa_load_verify_metadata = B_TRUE;
int spa_load_verify_data = B_TRUE;
static int spa_load_verify_shift = 4;
static int spa_load_verify_metadata = B_TRUE;
static int spa_load_verify_data = B_TRUE;
static int
spa_load_verify_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,