libbb: use a wrapper around sysconf(_SC_CLK_TCK) to save a few bytes

function                                             old     new   delta
bb_sc_clk_tck                                          -      10     +10
timescmd                                             118     113      -5
print_route                                         1763    1758      -5
mpstat_main                                         1288    1283      -5
iostat_main                                         1947    1942      -5
INET_setroute                                        879     871      -8
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/5 up/down: 10/-28)            Total: -18 bytes
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/libbb/sysconf.c b/libbb/sysconf.c
index c5fa5e001..4dbffbebd 100644
--- a/libbb/sysconf.c
+++ b/libbb/sysconf.c
@@ -14,3 +14,9 @@ unsigned FAST_FUNC bb_arg_max(void)
         return sysconf(_SC_ARG_MAX);
 }
 #endif
+
+/* Return the number of clock ticks per second. */
+unsigned FAST_FUNC bb_clk_tck(void)
+{
+        return sysconf(_SC_CLK_TCK);
+}