From ff3f3accc68c84851d1ea8cd995f9491b32bedef Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Thu, 29 Jan 2015 16:31:36 +0100 Subject: [PATCH] ntpd: get rid of G.initial_poll_complete This speeds up syncing - now happens only just two replies from a peer. Especially useful for "ntpd -q". Shouldn't have ill effects: if we chose a bad peer, we will discover it later and switch to another one. The code is even smaller this way. Suggested by Miroslav Lichvar Signed-off-by: Denys Vlasenko --- networking/ntpd.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/networking/ntpd.c b/networking/ntpd.c index 33cb1dcb1..c016bfc50 100644 --- a/networking/ntpd.c +++ b/networking/ntpd.c @@ -376,8 +376,6 @@ struct globals { */ #define G_precision_sec 0.002 uint8_t stratum; - /* Bool. After set to 1, never goes back to 0: */ - smallint initial_poll_complete; #define STATE_NSET 0 /* initial state, "nothing is set" */ //#define STATE_FSET 1 /* frequency set from file */ @@ -1084,7 +1082,7 @@ select_and_cluster(void) num_points = 0; item = G.ntp_peers; - if (G.initial_poll_complete) while (item != NULL) { + while (item != NULL) { double rd, offset; p = (peer_t *) item->data; @@ -1649,7 +1647,7 @@ update_local_clock(peer_t *p) if (G.ntp_status & LI_MINUSSEC) tmx.status |= STA_DEL; - tmx.constant = G.poll_exp - 4; + tmx.constant = (int)G.poll_exp - 4 > 0 ? (int)G.poll_exp - 4 : 0; /* EXPERIMENTAL. * The below if statement should be unnecessary, but... * It looks like Linux kernel's PLL is far too gentle in changing @@ -2285,7 +2283,6 @@ int ntpd_main(int argc UNUSED_PARAM, char **argv) VERB4 bb_error_msg("disabling burst mode"); G.polladj_count = 0; G.poll_exp = MINPOLL; - G.initial_poll_complete = 1; } send_query_to_peer(p); } else {