busybox-w32/scripts/generate_BUFSIZ.sh, branch long_paths

build system: make CONFIG_FEATURE_USE_BSS_TAIL less funky

2016-06-29T13:00:52+00:00

CONFIG_FEATURE_USE_BSS_TAIL code was aliasing bb_common_bufsiz1 to _end. This is unreliable: _end may be not sufficiently aligned. Change code to simply enlarge COMMON_BUFSIZE when we detect that _end has significant amount of space to the end of page. Signed-off-by: Denys Vlasenko

generate_BUFSIZ.sh: yet another tweak

2016-04-24T12:13:35+00:00

Signed-off-by: Denys Vlasenko

generate_BUFSIZ.sh: catch BUFSIZE < 1024 also on "big" builds

2016-04-21T22:24:53+00:00

Signed-off-by: Denys Vlasenko

build system: fix generate_BUFSIZ.sh to not alternate 1k and malloc builds

2016-04-21T21:52:35+00:00

Signed-off-by: Denys Vlasenko

libbb: constify *bb_common_bufsiz1 (if it is compiled to be a pointer)

2016-04-21T19:47:45+00:00

This lets gcc optimize much better: text data bss dec hex filename 922846 910 13056 936812 e4b6c busybox_unstripped.nonconst 920255 910 13056 934221 e414d busybox_unstripped Signed-off-by: Denys Vlasenko

libbb: make "COMMON_BUFSIZE = 1024 bytes, the buffer will be malloced" work

2016-04-21T19:03:51+00:00

Signed-off-by: Denys Vlasenko

*: add most of the required setup_common_bufsiz() calls

2016-04-21T16:18:48+00:00

Signed-off-by: Denys Vlasenko

libbb: make bb_common_bufsiz1 1 kbyte, add capability to use bss tail for it

2016-04-21T15:39:11+00:00

The config item is FEATURE_USE_BSS_TAIL. When it is off (default): function old new delta read_config 210 228 +18 doCommands 2279 2294 +15 ipneigh_list_or_flush 763 772 +9 ipaddr_list_or_flush 1256 1261 +5 display_process_list 1301 1306 +5 conspy_main 1378 1383 +5 do_lzo_compress 352 355 +3 do_lzo_decompress 565 567 +2 push 46 44 -2 inetd_main 2136 2134 -2 uevent_main 421 418 -3 addLines 97 92 -5 bb_common_bufsiz1 8193 1024 -7169 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 8/5 up/down: 62/-7181) Total: -7119 bytes text data bss dec hex filename 829850 4086 9080 843016 cdd08 busybox_old 829901 4086 1904 835891 cc133 busybox_unstripped FEATURE_USE_BSS_TAIL=y: read_config 210 228 +18 doCommands 2279 2294 +15 ipneigh_list_or_flush 763 772 +9 ipaddr_list_or_flush 1256 1261 +5 display_process_list 1301 1306 +5 conspy_main 1378 1383 +5 do_lzo_compress 352 355 +3 do_lzo_decompress 565 567 +2 inetd_main 2136 2134 -2 bb_common_bufsiz1 8193 - -8193 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 8/1 up/down: 62/-8195) Total: -8133 bytes text data bss dec hex filename 829850 4086 9080 843016 cdd08 busybox_old 829911 4086 880 834877 cbd3d busybox_unstripped FIXME: setup_common_bufsiz() calls are missing. Signed-off-by: Denys Vlasenko