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d74beb9f33
linux/kernel
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Eric Dumazet d74beb9f33 [PATCH] Use unsigned int types for a faster bsearch 
This patch avoids arithmetic on 'signed' types that are slower than
'unsigned'.  This saves space and cpu cycles.

size of kernel/sys.o before the patch (gcc-3.4.5)

    text    data     bss     dec     hex filename
   10924     252       4   11180    2bac kernel/sys.o

size of kernel/sys.o after the patch
    text    data     bss     dec     hex filename
   10903     252       4   11159    2b97 kernel/sys.o

I noticed that gcc-4.1.0 (from Fedora Core 5) even uses idiv instruction for
(a+b)/2 if a and b are signed.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 08:23:01 -08:00
..
irq [PATCH] IRQ: prevent enabling of previously disabled interrupt 2006-03-25 08:22:55 -08:00
power [PATCH] Check if cpu can be onlined before calling smp_prepare_cpu() 2006-03-25 08:23:01 -08:00
.gitignore
acct.c
audit.c
auditsc.c
capability.c [PATCH] refactor capable() to one implementation, add __capable() helper 2006-03-25 08:22:56 -08:00
compat.c
configs.c
cpu.c
cpuset.c [PATCH] cpuset: remove useless local variable initialization 2006-03-24 07:33:24 -08:00
dma.c
exec_domain.c [PATCH] Fix module refcount leak in __set_personality() 2006-03-24 07:33:30 -08:00
exit.c [PATCH] sem2mutex: tty 2006-03-23 07:38:11 -08:00
extable.c
fork.c [PATCH] cpuset memory spread slab cache optimizations 2006-03-24 07:33:23 -08:00
futex.c
hrtimer.c
intermodule.c
itimer.c [PATCH] Validate and sanitze itimer timeval from userspace 2006-03-25 08:22:49 -08:00
kallsyms.c
Kconfig.hz
Kconfig.preempt
kexec.c
kfifo.c
kmod.c
kprobes.c [PATCH] sem2mutex: kprobes 2006-03-23 07:38:12 -08:00
ksysfs.c [PATCH] fix build error if CONFIG_SYSFS=n 2006-03-24 07:33:31 -08:00
kthread.c [PATCH] find_task_by_pid() needs tasklist_lock 2006-03-25 08:22:57 -08:00
Makefile [PATCH] relay: migrate from relayfs to a generic relay API 2006-03-23 19:56:55 +01:00
module.c [PATCH] Remove MODULE_PARM 2006-03-25 08:22:52 -08:00
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
panic.c [PATCH] pause_on_oops command line option 2006-03-23 07:38:16 -08:00
params.c [PATCH] kernel/params.c: make param_array() static 2006-03-25 08:22:52 -08:00
pid.c
posix-cpu-timers.c
posix-timers.c
printk.c [PATCH] console_setup() depends (wrongly?) on CONFIG_PRINTK 2006-03-24 07:33:27 -08:00
profile.c
ptrace.c
rcupdate.c [PATCH] rcu_process_callbacks: don't cli() while testing ->nxtlist 2006-03-24 07:33:20 -08:00
rcutorture.c [PATCH] Remove MODULE_PARM 2006-03-25 08:22:52 -08:00
relay.c [PATCH] relay: consolidate sendfile() and read() code 2006-03-23 19:58:45 +01:00
resource.c
sched.c [PATCH] make bug messages more consistent 2006-03-23 07:38:16 -08:00
seccomp.c
signal.c [PATCH] sigprocmask: kill unneeded temp var 2006-03-23 07:38:15 -08:00
softirq.c
softlockup.c [PATCH] timer irq driven soft watchdog fix 2006-03-25 08:22:48 -08:00
spinlock.c [PATCH] BUILD_LOCK_OPS: cleanup preempt_disable() usage 2006-03-23 07:38:16 -08:00
stop_machine.c
sys_ni.c
sys.c [PATCH] Use unsigned int types for a faster bsearch 2006-03-25 08:23:01 -08:00
sysctl.c [PATCH] Range checking in do_proc_dointvec_(userhz_)jiffies_conv 2006-03-24 07:33:20 -08:00
time.c
timer.c [PATCH] sys_alarm() unsigned signed conversion fixup 2006-03-25 08:22:48 -08:00
uid16.c
user.c [PATCH] free_uid() locking improvement 2006-03-24 07:33:20 -08:00
wait.c
workqueue.c