From eb1e011a14748a1d9df9a7d7df9a5711721a1bdb Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 15 Feb 2017 09:49:26 +0100 Subject: average: change to declare precision, not factor Declaring the factor is counter-intuitive, and people are prone to using small(-ish) values even when that makes no sense. Change the DECLARE_EWMA() macro to take the fractional precision, in bits, rather than a factor, and update all users. While at it, add some more documentation. Acked-by: David S. Miller Signed-off-by: Johannes Berg --- drivers/net/virtio_net.c | 2 +- drivers/net/wireless/ath/ath5k/ath5k.h | 2 +- drivers/net/wireless/ralink/rt2x00/rt2x00.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index bf95016f442a..e9d7e2b70085 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -51,7 +51,7 @@ module_param(gso, bool, 0444); * at once, the weight is chosen so that the EWMA will be insensitive to short- * term, transient changes in packet size. */ -DECLARE_EWMA(pkt_len, 1, 64) +DECLARE_EWMA(pkt_len, 0, 64) /* With mergeable buffers we align buffer address and use the low bits to * encode its true size. Buffer size is up to 1 page so we need to align to diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h index 67fedb61fcc0..979800c6f57f 100644 --- a/drivers/net/wireless/ath/ath5k/ath5k.h +++ b/drivers/net/wireless/ath/ath5k/ath5k.h @@ -1252,7 +1252,7 @@ struct ath5k_statistics { #define ATH5K_TXQ_LEN_MAX (ATH_TXBUF / 4) /* bufs per queue */ #define ATH5K_TXQ_LEN_LOW (ATH5K_TXQ_LEN_MAX / 2) /* low mark */ -DECLARE_EWMA(beacon_rssi, 1024, 8) +DECLARE_EWMA(beacon_rssi, 10, 8) /* Driver state associated with an instance of a device */ struct ath5k_hw { diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00.h b/drivers/net/wireless/ralink/rt2x00/rt2x00.h index 26869b3bef45..340787894c69 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h @@ -257,7 +257,7 @@ struct link_qual { int tx_failed; }; -DECLARE_EWMA(rssi, 1024, 8) +DECLARE_EWMA(rssi, 10, 8) /* * Antenna settings about the currently active link. -- cgit