AcoSail/kernel_optimize_test
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e7d2860b69
kernel_optimize_test/fs
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André Goddard Rosa e7d2860b69 tree-wide: convert open calls to remove spaces to skip_spaces() lib function 
Makes use of skip_spaces() defined in lib/string.c for removing leading
spaces from strings all over the tree.

It decreases lib.a code size by 47 bytes and reuses the function tree-wide:
   text    data     bss     dec     hex filename
  64688     584     592   65864   10148 (TOTALS-BEFORE)
  64641     584     592   65817   10119 (TOTALS-AFTER)

Also, while at it, if we see (*str && isspace(*str)), we can be sure to
remove the first condition (*str) as the second one (isspace(*str)) also
evaluates to 0 whenever *str == 0, making it redundant. In other words,
"a char equals zero is never a space".

Julia Lawall tried the semantic patch (http://coccinelle.lip6.fr) below,
and found occurrences of this pattern on 3 more files:
    drivers/leds/led-class.c
    drivers/leds/ledtrig-timer.c
    drivers/video/output.c

@@
expression str;
@@

( // ignore skip_spaces cases
while (*str &&  isspace(*str)) { \(str++;\|++str;\) }
|
- *str &&
isspace(*str)
)

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Cc: Julia Lawall <julia@diku.dk>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Neil Brown <neilb@suse.de>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: David Howells <dhowells@redhat.com>
Cc: <linux-ext4@vger.kernel.org>
Cc: Samuel Ortiz <samuel@sortiz.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15 08:53:32 -08:00
..
9p 9p: fix build breakage introduced by FS-Cache 2009-12-01 07:35:11 -08:00
adfs
affs
afs afs: remove manual O_SYNC handling 2009-12-10 15:02:50 +01:00
autofs
autofs4
befs
bfs
btrfs task_struct: make journal_info conditional 2009-12-15 08:53:27 -08:00
cachefiles tree-wide: convert open calls to remove spaces to skip_spaces() lib function 2009-12-15 08:53:32 -08:00
cifs vfs: Implement proper O_SYNC semantics 2009-12-10 15:02:50 +01:00
coda sysctl: Drop & in front of every proc_handler. 2009-11-18 08:37:40 -08:00
configfs
cramfs
debugfs debugfs: fix create mutex racy fops and private data 2009-12-11 11:24:53 -08:00
devpts devpts_get_tty() should validate inode 2009-12-11 15:18:05 -08:00
dlm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm 2009-12-10 09:33:59 -08:00
ecryptfs ima: ecryptfs fix imbalance message 2009-10-08 11:31:38 -05:00
efs
exofs exofs: Multi-device mirror support 2009-12-10 09:59:23 +02:00
exportfs
ext2 ext2: fix comment in ext2_find_entry about return values 2009-12-10 15:02:53 +01:00
ext3 ext3: PTR_ERR return of wrong pointer in setup_new_group_blocks() 2009-12-10 15:02:55 +01:00
ext4 tree-wide: convert open calls to remove spaces to skip_spaces() lib function 2009-12-15 08:53:32 -08:00
fat Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6 2009-09-30 09:31:14 -07:00
freevxfs
fscache FS-Cache: Provide nop fscache_stat_d() if CONFIG_FSCACHE_STATS=n 2009-11-20 21:50:44 +00:00
fuse fuse: reject O_DIRECT flag also in fuse_create 2009-11-27 16:37:13 +01:00
gfs2 task_struct: make journal_info conditional 2009-12-15 08:53:27 -08:00
hfs hfs: fix a potential buffer overflow 2009-12-15 08:53:10 -08:00
hfsplus hfsplus: refuse to mount volumes larger than 2TB 2009-10-29 07:39:27 -07:00
hostfs
hpfs
hppfs
hugetlbfs
isofs zisofs: Implement reading of compressed files when PAGE_CACHE_SIZE > compress block size 2009-12-10 15:02:49 +01:00
jbd task_struct: make journal_info conditional 2009-12-15 08:53:27 -08:00
jbd2 task_struct: make journal_info conditional 2009-12-15 08:53:27 -08:00
jffs2 Merge branch 'for-next' into for-linus 2009-12-07 18:36:35 +01:00
jfs tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
lockd sysctl: Drop & in front of every proc_handler. 2009-11-18 08:37:40 -08:00
minix
ncpfs tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
nfs Merge git://git.linux-nfs.org/projects/trondmy/nfs-2.6 2009-12-14 10:00:24 -08:00
nfs_common
nfsd Fix memory corruption caused by nfsd readdir+ 2009-11-14 12:55:55 -08:00
nilfs2 task_struct: make journal_info conditional 2009-12-15 08:53:27 -08:00
nls Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6 2009-09-30 09:31:14 -07:00
notify Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-12-09 19:43:33 -08:00
ntfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-12-09 19:43:33 -08:00
ocfs2 quota: Move definition of QFMT_OCFS2 to linux/quota.h 2009-12-10 15:02:53 +01:00
omfs tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
openpromfs
partitions partitions: read whole sector with EFI GPT header 2009-11-23 09:29:58 +01:00
proc procfs: allow threads to rename siblings via /proc/pid/tasks/tid/comm 2009-12-15 08:53:24 -08:00
qnx4 qnx4fs: add missing KERN_xxx to printk() calls 2009-11-09 09:40:57 +01:00
quota quota: Implement quota format with 64-bit space and inode limits 2009-12-10 15:02:54 +01:00
ramfs
reiserfs task_struct: make journal_info conditional 2009-12-15 08:53:27 -08:00
romfs ROMFS: fix length used with romfs_dev_strnlen() function 2009-10-11 11:33:56 -07:00
smbfs
squashfs
sysfs sysfs: sysfs_setattr remove unnecessary permission check. 2009-12-11 11:24:54 -08:00
sysv
ubifs Merge git://git.infradead.org/ubifs-2.6 2009-12-10 09:31:45 -08:00
udf udf: Avoid IO in udf_clear_inode 2009-12-14 21:40:04 +01:00
ufs
xfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2009-12-14 09:58:24 -08:00
aio.c block: move bdi/address_space unplug functions to backing-dev.h 2009-10-29 13:59:26 +01:00
anon_inodes.c headers: remove sched.h from poll.h 2009-10-04 15:05:10 -07:00
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf_fdpic.c nommu: fix malloc performance by adding uninitialized flag 2009-12-15 08:53:24 -08:00
binfmt_elf.c tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
binfmt_som.c
bio-integrity.c
bio.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-12-09 19:43:33 -08:00
block_dev.c Merge branch 'for-linus' into for-2.6.33 2009-11-03 21:14:39 +01:00
buffer.c Merge branch 'writeback' of git://git.kernel.dk/linux-2.6-block 2009-09-25 09:27:30 -07:00
char_dev.c
compat_binfmt_elf.c
compat_ioctl.c md: move compat_ioctl handling into md.c 2009-12-14 12:51:41 +11:00
compat.c x86, fs: Fix x86 procfs stack information for threads on 64-bit 2009-11-04 13:25:03 +01:00
dcache.c
dcookies.c
direct-io.c Fix regression in direct writes performance due to WRITE_ODIRECT flag removal 2009-11-26 09:46:46 +01:00
drop_caches.c
eventfd.c
eventpoll.c sysctl: Drop & in front of every proc_handler. 2009-11-18 08:37:40 -08:00
exec.c procfs: allow threads to rename siblings via /proc/pid/tasks/tid/comm 2009-12-15 08:53:24 -08:00
fcntl.c fcntl: rename F_OWNER_GID to F_OWNER_PGRP 2009-11-17 17:40:33 -08:00
fifo.c
file_table.c LSM: imbed ima calls in the security hooks 2009-10-25 12:22:48 +08:00
file.c headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
filesystems.c
fs_struct.c
fs-writeback.c writeback: remove unused nonblocking and congestion checks 2009-12-03 13:54:25 +01:00
generic_acl.c
inode.c LSM: imbed ima calls in the security hooks 2009-10-25 12:22:48 +08:00
internal.h
ioctl.c __generic_block_fiemap(): fix for files bigger than 4GB 2009-11-12 07:26:01 -08:00
ioprio.c
Kconfig task_struct: make journal_info conditional 2009-12-15 08:53:27 -08:00
Kconfig.binfmt
libfs.c
locks.c
Makefile
mbcache.c
mpage.c
namei.c Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 2009-12-11 15:31:13 -08:00
namespace.c LSM: Pass original mount flags to security_sb_mount(). 2009-10-12 10:56:03 +11:00
nfsctl.c
no-block.c
open.c LSM: Move security_path_chmod()/security_path_chown() to after mutex_lock(). 2009-11-24 08:49:26 +11:00
pipe.c fs: pipe.c null pointer dereference 2009-10-22 08:11:44 +09:00
pnode.c
pnode.h
posix_acl.c
read_write.c sendfile(): check f_op.splice_write() rather than f_op.sendpage() 2009-11-04 09:09:52 +01:00
read_write.h
readdir.c
select.c headers: remove sched.h from poll.h 2009-10-04 15:05:10 -07:00
seq_file.c
signalfd.c
splice.c sendfile(): check f_op.splice_write() rather than f_op.sendpage() 2009-11-04 09:09:52 +01:00
stack.c
stat.c
super.c
sync.c kill wait_on_page_writeback_range 2009-12-10 15:02:50 +01:00
timerfd.c
utimes.c
xattr_acl.c VFS: Use GFP_NOFS in posix_acl_from_xattr() 2009-12-03 11:48:07 +00:00
xattr.c