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Add linux kernel module support

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Setup linux kernel module support, this includes:
- zfs context for kernel/user
- kernel module build system integration
- kernel module macros
- kernel module symbol export
- kernel module options

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf
2010-08-26 11:49:16 -07:00
parent 00b46022c6
commit c28b227942
40 changed files with 820 additions and 10 deletions
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module/zfs/zio.c
+21 -2
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@@ -74,6 +74,7 @@ kmem_cache_t *zio_cache;
kmem_cache_t *zio_link_cache;
kmem_cache_t *zio_buf_cache[SPA_MAXBLOCKSIZE >> SPA_MINBLOCKSHIFT];
kmem_cache_t *zio_data_buf_cache[SPA_MAXBLOCKSIZE >> SPA_MINBLOCKSHIFT];
int zio_bulk_flags = 0;
#ifdef _KERNEL
extern vmem_t *zio_alloc_arena;
@@ -136,12 +137,14 @@ zio_init(void)
(void) sprintf(name, "zio_buf_%lu", (ulong_t)size);
zio_buf_cache[c] = kmem_cache_create(name, size,
align, NULL, NULL, NULL, NULL, NULL,
size > zio_buf_debug_limit ? KMC_NODEBUG : 0);
(size > zio_buf_debug_limit ? KMC_NODEBUG : 0) |
zio_bulk_flags);
(void) sprintf(name, "zio_data_buf_%lu", (ulong_t)size);
zio_data_buf_cache[c] = kmem_cache_create(name, size,
align, NULL, NULL, NULL, NULL, data_alloc_arena,
size > zio_buf_debug_limit ? KMC_NODEBUG : 0);
(size > zio_buf_debug_limit ? KMC_NODEBUG : 0) |
zio_bulk_flags);
}
}
@@ -2975,3 +2978,19 @@ static zio_pipe_stage_t *zio_pipeline[] = {
zio_checksum_verify,
zio_done
};
#if defined(_KERNEL) && defined(HAVE_SPL)
/* Fault injection */
EXPORT_SYMBOL(zio_injection_enabled);
EXPORT_SYMBOL(zio_inject_fault);
EXPORT_SYMBOL(zio_inject_list_next);
EXPORT_SYMBOL(zio_clear_fault);
EXPORT_SYMBOL(zio_handle_fault_injection);
EXPORT_SYMBOL(zio_handle_device_injection);
EXPORT_SYMBOL(zio_handle_label_injection);
EXPORT_SYMBOL(zio_priority_table);
EXPORT_SYMBOL(zio_type_name);
module_param(zio_bulk_flags, int, 0644);
MODULE_PARM_DESC(zio_bulk_flags, "Additional flags to pass to bulk buffers");
#endif