From 459be35234cc24b69309eb0ee22600024c73713e Mon Sep 17 00:00:00 2001 From: Denis Vlasenko Date: Sun, 17 Jun 2007 19:09:05 +0000 Subject: hwclock: size optimizations libbb/time.c: new file, introducing monotonic_us() pscan, traceroute, arping: use it instead of gettimeofday ping, zcip: TODO function old new delta monotonic_us - 89 +89 find_pair 164 180 +16 .rodata 129747 129763 +16 refresh 1144 1152 +8 ............ timeout 8 4 -4 static.start 8 4 -4 last 8 4 -4 parse_conf 1303 1284 -19 time_main 1149 1124 -25 gettimeofday_us 39 - -39 arping_main 2042 1969 -73 hwclock_main 594 501 -93 catcher 485 380 -105 traceroute_main 4300 4117 -183 ------------------------------------------------------------------------------ (add/remove: 2/1 grow/shrink: 8/11 up/down: 157/-562) Total: -405 bytes --- libbb/Config.in | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'libbb/Config.in') diff --git a/libbb/Config.in b/libbb/Config.in index a1ff7c056..0a3769df2 100644 --- a/libbb/Config.in +++ b/libbb/Config.in @@ -95,4 +95,14 @@ config FEATURE_EDITING_FANCY_PROMPT Setting this option allows for prompts to use things like \w and \$ and escape codes. +config MONOTONIC_SYSCALL + bool "Use clock_gettime(CLOCK_MONOTONIC) syscall" + default y + help + Use clock_gettime(CLOCK_MONOTONIC) syscall for measuring + time intervals (time, ping, traceroute etc need this). + Probably requires Linux 2.6+. If not selected, gettimeofday + will be used instead (which gives wrong results if date/time + is reset). + endmenu -- cgit v1.2.3