kernel-ark/lib
Denys Vlasenko 9b706aee7d x86: trivial printk optimizations
In arch/x86/boot/printf.c gets rid of unused tail of digits: const char
*digits = "0123456789abcdefghijklmnopqrstuvwxyz"; (we are using 0-9a-f
only)

Uses smaller/faster lowercasing (by ORing with 0x20)
if we know that we work on numbers/digits. Makes
strtoul smaller, and also we are getting rid of

  static const char small_digits[] = "0123456789abcdefx";
  static const char large_digits[] = "0123456789ABCDEFX";

since this works equally well:

  static const char digits[16] = "0123456789ABCDEF";

Size savings:

$ size vmlinux.org vmlinux
   text    data     bss     dec     hex filename
 877320  112252   90112 1079684  107984 vmlinux.org
 877048  112252   90112 1079412  107874 vmlinux

It may be also a tiny bit faster because code has less
branches now, but I doubt it is measurable.

[ hugh@veritas.com: uppercase pointers fix ]

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-09 23:24:09 +01:00
..
lzo
reed_solomon
zlib_deflate lib/: Spelling fixes 2008-02-03 17:48:52 +02:00
zlib_inflate
.gitignore
argv_split.c
audit.c
bitmap.c
bitrev.c
bug.c
bust_spinlocks.c
check_signature.c
cmdline.c
cpumask.c
crc7.c
crc16.c
crc32.c lib/: Spelling fixes 2008-02-03 17:48:52 +02:00
crc32defs.h
crc-ccitt.c
crc-itu-t.c
ctype.c
debug_locks.c
dec_and_lock.c
devres.c
div64.c
dump_stack.c
extable.c lib/extable.c: remove an expensive integer divide in search_extable() 2008-02-06 10:41:08 -08:00
fault-inject.c libfs: allow error return from simple attributes 2008-02-08 09:22:34 -08:00
find_next_bit.c ext4: Add ext4_find_next_bit() 2008-01-28 23:58:27 -05:00
gen_crc32table.c
genalloc.c
halfmd4.c
hexdump.c
hweight.c
idr.c
inflate.c
int_sqrt.c
iomap_copy.c
iomap.c lib: remove fastcall from lib/* 2008-02-08 09:22:31 -08:00
iommu-helper.c iommu sg: add IOMMU helper functions for the free area management 2008-02-05 09:44:11 -08:00
ioremap.c
irq_regs.c
kasprintf.c lib: move kasprintf to a separate file 2007-07-31 15:39:39 -07:00
Kconfig
Kconfig.debug x86, core: remove CONFIG_FORCED_INLINING 2008-02-09 23:24:09 +01:00
kernel_lock.c
klist.c
kobject_uevent.c
kobject.c kobject: kerneldoc comment fix 2008-02-02 15:14:48 -08:00
kref.c
libcrc32c.c
list_debug.c
locking-selftest-hardirq.h
locking-selftest-mutex.h
locking-selftest-rlock-hardirq.h
locking-selftest-rlock-softirq.h
locking-selftest-rlock.h
locking-selftest-rsem.h
locking-selftest-softirq.h
locking-selftest-spin-hardirq.h
locking-selftest-spin-softirq.h
locking-selftest-spin.h
locking-selftest-wlock-hardirq.h
locking-selftest-wlock-softirq.h
locking-selftest-wlock.h
locking-selftest-wsem.h
locking-selftest.c
Makefile lib/scatterlist.o needed by a module only - link it in unconditionally 2008-02-08 15:33:33 -08:00
parser.c
pcounter.c
percpu_counter.c
plist.c
prio_heap.c Fix cpusets update_cpumask 2007-10-19 11:53:41 -07:00
prio_tree.c
proportions.c
radix-tree.c radix-tree: avoid atomic allocations for preloaded insertions 2008-02-05 09:44:17 -08:00
random32.c
rbtree.c
reciprocal_div.c
rwsem-spinlock.c lib: remove fastcall from lib/* 2008-02-08 09:22:31 -08:00
rwsem.c
scatterlist.c
semaphore-sleepers.c lib: remove fastcall from lib/* 2008-02-08 09:22:31 -08:00
sha1.c
smp_processor_id.c debug_smp_processor_id() fixlets 2008-02-06 10:41:09 -08:00
sort.c
spinlock_debug.c
string.c
swiotlb.c iommu sg merging: swiotlb: respect the segment boundary limits 2008-02-05 09:44:12 -08:00
textsearch.c
ts_bm.c
ts_fsm.c
ts_kmp.c
vsprintf.c x86: trivial printk optimizations 2008-02-09 23:24:09 +01:00