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| author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2010-10-31 15:54:14 (GMT) |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2011-02-06 17:19:23 (GMT) |
| commit | 6c1e875ca6f3a47b40dce715bd07fdfdb8388d55 (patch) | |
| tree | b30ab51df8df7c4ed9ef3adb68b234064816497f /drivers/mtd/ubi/build.c | |
| parent | 7950d023c562823345892aac2e7c6a49f8de9ad1 (diff) | |
| download | linux-6c1e875ca6f3a47b40dce715bd07fdfdb8388d55.tar.xz | |
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.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index ef29635..ec0ad19 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) |