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blobfs: Add conf parse for blobfs.

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This patch make the cache buffer shift of blobfs configurable. We
can configure the cache buffer shift according workload, it will
help to improve the performance.

Change-Id: Ied1c2e5d6fd9eaa7aa0759c03c654fcf2e77aa23
Signed-off-by: Cunyin Chang <cunyin.chang@intel.com>
Reviewed-on: https://review.gerrithub.io/383381
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Cunyin Chang 2017-10-23 13:45:26 +08:00 committed by Ben Walker
parent cc57c4a9bc
commit 97f3104bc7
5 changed files with 58 additions and 4 deletions
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22
lib/blobfs/blobfs.c
View File

@ -34,6 +34,7 @@
#include "spdk/stdinc.h"
#include "spdk/blobfs.h"
#include "spdk/conf.h"
#include "blobfs_internal.h"
#include "spdk/queue.h"
@ -401,6 +402,23 @@ init_cb(void *ctx, struct spdk_blob_store *bs, int bserrno)
free_fs_request(req);
}
static void
fs_conf_parse(void)
{
struct spdk_conf_section *sp;
sp = spdk_conf_find_section(NULL, "Blobfs");
if (sp == NULL) {
g_fs_cache_buffer_shift = CACHE_BUFFER_SHIFT_DEFAULT;
return;
}
g_fs_cache_buffer_shift = spdk_conf_section_get_intval(sp, "CacheBufferShift");
if (g_fs_cache_buffer_shift <= 0) {
g_fs_cache_buffer_shift = CACHE_BUFFER_SHIFT_DEFAULT;
}
}
static struct spdk_filesystem *
fs_alloc(struct spdk_bs_dev *dev, fs_send_request_fn send_request_fn)
{
@ -449,6 +467,8 @@ spdk_fs_init(struct spdk_bs_dev *dev, fs_send_request_fn send_request_fn,
return;
}
fs_conf_parse();
req = alloc_fs_request(fs->md_target.md_fs_channel);
if (req == NULL) {
spdk_put_io_channel(fs->md_target.md_io_channel);
@ -657,6 +677,8 @@ spdk_fs_load(struct spdk_bs_dev *dev, fs_send_request_fn send_request_fn,
return;
}
fs_conf_parse();
req = alloc_fs_request(fs->md_target.md_fs_channel);
if (req == NULL) {
spdk_put_io_channel(fs->md_target.md_io_channel);

2
lib/blobfs/tree.c
View File

@ -41,6 +41,8 @@
#include "spdk/env.h"
#include "spdk_internal/log.h"
uint32_t g_fs_cache_buffer_shift = CACHE_BUFFER_SHIFT_DEFAULT;
struct cache_buffer *
spdk_tree_find_buffer(struct cache_tree *tree, uint64_t offset)
{

10
lib/blobfs/tree.h
View File

@ -43,14 +43,16 @@ struct cache_buffer {
bool in_progress;
};
#define CACHE_BUFFER_SHIFT (18)
#define CACHE_BUFFER_SIZE (1U << CACHE_BUFFER_SHIFT)
extern uint32_t g_fs_cache_buffer_shift;
#define CACHE_BUFFER_SHIFT_DEFAULT 18
#define CACHE_BUFFER_SIZE (1U << g_fs_cache_buffer_shift)
#define NEXT_CACHE_BUFFER_OFFSET(offset) \
(((offset + CACHE_BUFFER_SIZE) >> CACHE_BUFFER_SHIFT) << CACHE_BUFFER_SHIFT)
(((offset + CACHE_BUFFER_SIZE) >> g_fs_cache_buffer_shift) << g_fs_cache_buffer_shift)
#define CACHE_TREE_SHIFT 6
#define CACHE_TREE_WIDTH (1U << CACHE_TREE_SHIFT)
#define CACHE_TREE_LEVEL_SHIFT(level) (CACHE_BUFFER_SHIFT + (level) * CACHE_TREE_SHIFT)
#define CACHE_TREE_LEVEL_SHIFT(level) (g_fs_cache_buffer_shift + (level) * CACHE_TREE_SHIFT)
#define CACHE_TREE_LEVEL_SIZE(level) (1ULL << CACHE_TREE_LEVEL_SHIFT(level))
#define CACHE_TREE_LEVEL_MASK(level) (CACHE_TREE_LEVEL_SIZE(level) - 1)
#define CACHE_TREE_INDEX(level, offset) ((offset >> CACHE_TREE_LEVEL_SHIFT(level)) & (CACHE_TREE_WIDTH - 1))

14
test/lib/blobfs/blobfs_async_ut/blobfs_async_ut.c
View File

@ -47,6 +47,20 @@ struct spdk_filesystem *g_fs;
struct spdk_file *g_file;
int g_fserrno;
/* Return NULL to test hardcoded defaults. */
struct spdk_conf_section *
spdk_conf_find_section(struct spdk_conf *cp, const char *name)
{
return NULL;
}
/* Return -1 to test hardcoded defaults. */
int
spdk_conf_section_get_intval(struct spdk_conf_section *sp, const char *key)
{
return -1;
}
static void
_fs_send_msg(spdk_thread_fn fn, void *ctx, void *thread_ctx)
{

14
test/lib/blobfs/blobfs_sync_ut/blobfs_sync_ut.c
View File

@ -49,6 +49,20 @@ struct spdk_filesystem *g_fs;
struct spdk_file *g_file;
int g_fserrno;
/* Return NULL to test hardcoded defaults. */
struct spdk_conf_section *
spdk_conf_find_section(struct spdk_conf *cp, const char *name)
{
return NULL;
}
/* Return -1 to test hardcoded defaults. */
int
spdk_conf_section_get_intval(struct spdk_conf_section *sp, const char *key)
{
return -1;
}
static void
_fs_send_msg(spdk_thread_fn fn, void *ctx, void *thread_ctx)
{