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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2010-10-31 16:54:14 +0100
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2011-02-06 18:19:23 +0100
commit6c1e875ca6f3a47b40dce715bd07fdfdb8388d55 (patch)
treeb30ab51df8df7c4ed9ef3adb68b234064816497f /drivers/mtd/ubi/build.c
parentUBI: use raw mtd read function in debugging code (diff)
downloadlinux-6c1e875ca6f3a47b40dce715bd07fdfdb8388d55.tar.xz
linux-6c1e875ca6f3a47b40dce715bd07fdfdb8388d55.zip
UBI: add slab cache for ubi_scan_leb objects
During scanning UBI allocates one struct ubi_scan_leb object for each PEB, so it can end up allocating thousands of them. Use slab cache to reduce memory consumption for these 48-byte objects, because currently used 'kmalloc()' ends up allocating 64 bytes per object, instead of 48. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers/mtd/ubi/build.c')
-rw-r--r--drivers/mtd/ubi/build.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index ef296350aa8f..ec0ad19c691a 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -923,6 +923,8 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)
spin_lock_init(&ubi->volumes_lock);
ubi_msg("attaching mtd%d to ubi%d", mtd->index, ubi_num);
+ dbg_msg("sizeof(struct ubi_scan_leb) %zu", sizeof(struct ubi_scan_leb));
+ dbg_msg("sizeof(struct ubi_wl_entry) %zu", sizeof(struct ubi_wl_entry));
err = io_init(ubi);
if (err)