如下面的makefile，怎么加编译的优化参数？
#G4^4~t
Cwww.linuxeden.com|p]6F%Ydp
# Comment/uncomment the following line to disable/enable debuggingwww.linuxeden.comQtHS't        g"yl bt9]
#DEBUG = ylM,j_5x#s|B

MA!KoW(x2KYA# Add your debugging flag (or not) to CFLAGS
jnY;bSwww.linuxeden.comifeq ($(DEBUG),y)
P{/k:M@@        ^xP4u
  DEBFLAGS = -O -g # "-O" is needed to expand inlines,@7A_:c.O
elsewww.linuxeden.comb8m"S["wAm_O
  DEBFLAGS = -O2YhM,sNt
Qn
endif\tVDi,RN
www.linuxeden.combUOs,X1Fn;p
CFLAGS += $(DEBFLAGS) -I$(LDDINCDIR)
@H3GSt/^x\www.linuxeden.com+f        {j.s6k;RW v
ifneq ($(KERNELRELEASE),)# call from kernel build systemLinux伊甸园论坛,cl~Mo]

jJ\{bobj-m := dummy_card.o buffer_card.o
2r%t/B3}x.U(C1D TLinux伊甸园论坛h5hVs`G
else
,K7JhKG,{8D swww.linuxeden.com {w!vX4fu-[
KERNELDIR ?= /lib/modules/$(shell uname -r)/buildwww.linuxeden.com!J$sx        F2g'M*r
y
PWD       := $(shell pwd)
8f;R'sv4FUe
b$S _0_?S|{Rdefault:
!};ic%HCPr/Cqe;W        $(MAKE) -C $(KERNELDIR) M=$(PWD) LDDINCDIR=$(PWD)/../include modules
8I~        \T0}1y&tG$C)^Linux伊甸园论坛
6\.v$z2o
N{2uEg*aendifydwsNSf;S

7p7h$Qz
Qclean:Linux伊甸园论坛n*_#jg'{7Y&J\
        rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions
)V:~/ym[ S
w}c|gV.F4m5swww.linuxeden.com#depend .depend dep:
y
Q3K6_
R"l*j#        $(CC) $(CFLAGS) -M *.c > .depend
1CEGa Z\KLinux伊甸园论坛B6WEFpT;u-]'T


n1_VQ        x8i-t+Jwww.linuxeden.comifeq (.depend,$(wildcard .depend))
2po3K6iP4I
N_[include .depend
5E%ME A0gEendif

有必要吗？优化可能带来的问题远比之前来得多