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Fix stack inline

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Decrease stack usage for various call paths by forcing certain
functions to be inlined.  By inlining the functions the overhead
of a new stack frame is removed at the cost of increased code size.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf 2010-08-26 10:58:00 -07:00
parent 161ce7ce3c
commit bf701a83c5
3 changed files with 7 additions and 4 deletions
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3
module/zfs/dbuf.c
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@ -1607,7 +1607,8 @@ dbuf_clear(dmu_buf_impl_t *db)
dbuf_rele(parent, db); dbuf_rele(parent, db);
} }
static int __attribute__((always_inline))
static inline int
dbuf_findbp(dnode_t *dn, int level, uint64_t blkid, int fail_sparse, dbuf_findbp(dnode_t *dn, int level, uint64_t blkid, int fail_sparse,
dmu_buf_impl_t **parentp, blkptr_t **bpp, struct dbuf_hold_impl_data *dh) dmu_buf_impl_t **parentp, blkptr_t **bpp, struct dbuf_hold_impl_data *dh)
{ {

5
module/zfs/spa.c
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@ -113,7 +113,7 @@ const zio_taskq_info_t zio_taskqs[ZIO_TYPES][ZIO_TASKQ_TYPES] = {
static dsl_syncfunc_t spa_sync_props; static dsl_syncfunc_t spa_sync_props;
static boolean_t spa_has_active_shared_spare(spa_t *spa); static boolean_t spa_has_active_shared_spare(spa_t *spa);
static int spa_load_impl(spa_t *spa, uint64_t, nvlist_t *config, static inline int spa_load_impl(spa_t *spa, uint64_t, nvlist_t *config,
spa_load_state_t state, spa_import_type_t type, boolean_t mosconfig, spa_load_state_t state, spa_import_type_t type, boolean_t mosconfig,
char **ereport); char **ereport);
static void spa_vdev_resilver_done(spa_t *spa); static void spa_vdev_resilver_done(spa_t *spa);
@ -1790,7 +1790,8 @@ spa_load(spa_t *spa, spa_load_state_t state, spa_import_type_t type,
* Load an existing storage pool, using the pool's builtin spa_config as a * Load an existing storage pool, using the pool's builtin spa_config as a
* source of configuration information. * source of configuration information.
*/ */
static int __attribute__((always_inline))
static inline int
spa_load_impl(spa_t *spa, uint64_t pool_guid, nvlist_t *config, spa_load_impl(spa_t *spa, uint64_t pool_guid, nvlist_t *config,
spa_load_state_t state, spa_import_type_t type, boolean_t mosconfig, spa_load_state_t state, spa_import_type_t type, boolean_t mosconfig,
char **ereport) char **ereport)

3
module/zfs/zio.c
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@ -436,7 +436,8 @@ zio_wait_for_children(zio_t *zio, enum zio_child child, enum zio_wait_type wait)
return (waiting); return (waiting);
} }
static void __attribute__((always_inline))
static inline void
zio_notify_parent(zio_t *pio, zio_t *zio, enum zio_wait_type wait) zio_notify_parent(zio_t *pio, zio_t *zio, enum zio_wait_type wait)
{ {
uint64_t *countp = &pio->io_children[zio->io_child_type][wait]; uint64_t *countp = &pio->io_children[zio->io_child_type][wait];