Return-path: Received: from mail-lf0-f44.google.com ([209.85.215.44]:36291 "EHLO mail-lf0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753067AbbKLNQZ (ORCPT ); Thu, 12 Nov 2015 08:16:25 -0500 Received: by lfs39 with SMTP id 39so33706318lfs.3 for ; Thu, 12 Nov 2015 05:16:23 -0800 (PST) From: Janusz Dziedzic To: linux-wireless@vger.kernel.org Cc: ath9k-devel@lists.ath9k.org, Janusz Dziedzic Subject: [PATCH 12/12] ath9k: MCC, print time elapsed between events Date: Thu, 12 Nov 2015 14:15:49 +0100 Message-Id: <1447334149-15507-12-git-send-email-janusz.dziedzic@tieto.com> (sfid-20151112_141629_612420_23568429) In-Reply-To: <1447334149-15507-1-git-send-email-janusz.dziedzic@tieto.com> References: <1447334149-15507-1-git-send-email-janusz.dziedzic@tieto.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: This is useful for MCC debugging and bug fixing. Signed-off-by: Janusz Dziedzic --- drivers/net/wireless/ath/ath9k/ath9k.h | 1 + drivers/net/wireless/ath/ath9k/channel.c | 19 +++++++++++++++++-- 2 files changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h index 4616229..952a467 100644 --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h @@ -983,6 +983,7 @@ struct ath_softc { struct ath_offchannel offchannel; struct ath_chanctx *next_chan; struct completion go_beacon; + struct timespec last_event_time; #endif unsigned long driver_data; diff --git a/drivers/net/wireless/ath/ath9k/channel.c b/drivers/net/wireless/ath/ath9k/channel.c index b0d74f0..d6b1076 100644 --- a/drivers/net/wireless/ath/ath9k/channel.c +++ b/drivers/net/wireless/ath/ath9k/channel.c @@ -226,6 +226,20 @@ static const char *chanctx_state_string(enum ath_chanctx_state state) } } +static const u32 chanctx_event_delta(struct ath_softc *sc) +{ + u64 ms; + struct timespec ts, *old; + + getrawmonotonic(&ts); + old = &sc->last_event_time; + ms = ts.tv_sec * 1000 + ts.tv_nsec / 1000000; + ms -= old->tv_sec * 1000 + old->tv_nsec / 1000000; + sc->last_event_time = ts; + + return (u32)ms; +} + void ath_chanctx_check_active(struct ath_softc *sc, struct ath_chanctx *ctx) { struct ath_common *common = ath9k_hw_common(sc->sc_ah); @@ -507,10 +521,11 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif, spin_lock_bh(&sc->chan_lock); - ath_dbg(common, CHAN_CTX, "cur_chan: %d MHz, event: %s, state: %s\n", + ath_dbg(common, CHAN_CTX, "cur_chan: %d MHz, event: %s, state: %s, delta: %u ms\n", sc->cur_chan->chandef.center_freq1, chanctx_event_string(ev), - chanctx_state_string(sc->sched.state)); + chanctx_state_string(sc->sched.state), + chanctx_event_delta(sc)); switch (ev) { case ATH_CHANCTX_EVENT_BEACON_PREPARE: -- 1.9.1