On 1/29/2024 10:54 AM, Johannes Berg wrote: > From: Johannes Berg <johannes.berg@xxxxxxxxx> > > Even if there are a lot of possible ways drivers might > call this, at least knowing when they do and with what > settings can be useful. Add tracing for it. > > Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx> > --- > net/mac80211/ht.c | 4 +++- > net/mac80211/trace.h | 31 ++++++++++++++++++++++++++++++- > 2 files changed, 33 insertions(+), 2 deletions(-) > > diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c > index cfe2653ed47f..c3330aea4da3 100644 > --- a/net/mac80211/ht.c > +++ b/net/mac80211/ht.c > @@ -9,7 +9,7 @@ > * Copyright 2007, Michael Wu <flamingice@xxxxxxxxxxxx> > * Copyright 2007-2010, Intel Corporation > * Copyright 2017 Intel Deutschland GmbH > - * Copyright(c) 2020-2023 Intel Corporation > + * Copyright(c) 2020-2024 Intel Corporation > */ > > #include <linux/ieee80211.h> > @@ -603,6 +603,8 @@ void ieee80211_request_smps(struct ieee80211_vif *vif, unsigned int link_id, > if (WARN_ON(!link)) > goto out; > > + trace_api_request_smps(sdata->local, sdata, link, smps_mode); > + > if (link->u.mgd.driver_smps_mode == smps_mode) > goto out; > > diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h > index 2d0d969f0c3d..806e762aa546 100644 > --- a/net/mac80211/trace.h > +++ b/net/mac80211/trace.h > @@ -2,7 +2,7 @@ > /* > * Portions of this file > * Copyright(c) 2016-2017 Intel Deutschland GmbH > - * Copyright (C) 2018 - 2023 Intel Corporation > + * Copyright (C) 2018 - 2024 Intel Corporation > */ > > #if !defined(__MAC80211_DRIVER_TRACE) || defined(TRACE_HEADER_MULTI_READ) > @@ -3058,6 +3058,35 @@ TRACE_EVENT(api_radar_detected, > ) > ); > > +TRACE_EVENT(api_request_smps, > + TP_PROTO(struct ieee80211_local *local, > + struct ieee80211_sub_if_data *sdata, > + struct ieee80211_link_data *link, > + enum ieee80211_smps_mode smps_mode), > + > + TP_ARGS(local, sdata, link, smps_mode), > + > + TP_STRUCT__entry( > + LOCAL_ENTRY > + VIF_ENTRY > + __field(int, link_id) > + __field(u32, smps_mode) > + ), > + > + TP_fast_assign( > + LOCAL_ASSIGN; > + VIF_ASSIGN; > + __entry->link_id = > + ieee80211_vif_is_mld(&sdata->vif) ? link->link_id : -1; why go to this trouble? why not just print the link_id that was passed into ieee80211_request_smps()? just so non-MLD will give -1 instead of 0? seems all of the other existing trace functions just print the link_id that was provided > + __entry->smps_mode = smps_mode; > + ), > + > + TP_printk( > + LOCAL_PR_FMT " " VIF_PR_FMT " link:%d, smps_mode:%d", > + LOCAL_PR_ARG, VIF_PR_ARG, __entry->link_id, __entry->smps_mode > + ) > +); > + > /* > * Tracing for internal functions > * (which may also be called in response to driver calls)
