i'm perusing the generic-2.6.24 linux patches in the svn checkout, and i'm curious about patch 004-extra_optimization.patch:
===== --- linux-2.6.23-rc6.orig/Makefile 2007-09-21 16:23:55.000000000 +0800 +++ linux-2.6.23-rc6/Makefile 2007-09-21 16:23:56.000000000 +0800 @@ -508,6 +508,9 @@ NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) CHECKFLAGS += $(NOSTDINC_FLAGS) +# improve gcc optimization +CFLAGS += $(call cc-option,-funit-at-a-time,) + # warn about C99 declaration after statement CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) ===== i'm used to openwrt patches that fix actual issues, but the above is apparently only for an optimization. is it necessary for openwrt? is there a reason that it isn't in the kernel Makefile itself? i guess i'm just curious about patches that appear optional in some sense. thanks. rday -- ======================================================================== Robert P. J. Day Linux Consulting, Training and Annoying Kernel Pedantry Waterloo, Ontario, CANADA Home page: http://crashcourse.ca Fedora Cookbook: http://crashcourse.ca/wiki/index.php/Fedora_Cookbook ======================================================================== _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org http://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
