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| author |   Jeff Johnson <quic_jjohnson@quicinc.com> | 2024-12-17 22:26:17 +0200 |
|---|---|---|
| committer |   Jeff Johnson <jeff.johnson@oss.qualcomm.com> | 2024-12-19 09:41:04 -0800 |
| commit | 6ff412420e5ea1635385038a0bb4c77420862bc9 (patch) | |
| tree | 62deeba476d5b74590c48520e8487b7aa1e958b7 | |
| parent | wifi: ath12k: Decrease ath12k_bss_assoc() stack usage (diff) | |
| download | linux-rng-6ff412420e5ea1635385038a0bb4c77420862bc9.tar.xz linux-rng-6ff412420e5ea1635385038a0bb4c77420862bc9.zip | |
wifi: ath12k: Decrease ath12k_sta_rc_update_wk() stack usage
Currently when building ath12k with llvm-18.1.7-x86_64 the following warning is
observed:
drivers/net/wireless/ath/ath12k/mac.c:4946:13: warning: stack frame size (1112) exceeds limit (1024) in 'ath12k_sta_rc_update_wk' [-Wframe-larger-than]
A major contributor to the stack usage in this function is:
struct ath12k_wmi_peer_assoc_arg peer_arg;
Avoid the excess stack usage by dynamically allocating peer_arg
instead of declaring it on the stack.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://patch.msgid.link/20241217202618.1329312-4-kvalo@kernel.org
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
| -rw-r--r-- | drivers/net/wireless/ath/ath12k/mac.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c index 2a30a11903c5..10293e9c1d49 100644 --- a/drivers/net/wireless/ath/ath12k/mac.c +++ b/drivers/net/wireless/ath/ath12k/mac.c @@ -4956,7 +4956,6 @@ static void ath12k_sta_rc_update_wk(struct wiphy *wiphy, struct wiphy_work *wk) u32 changed, bw, nss, smps, bw_prev; int err, num_vht_rates; const struct cfg80211_bitrate_mask *mask; - struct ath12k_wmi_peer_assoc_arg peer_arg; enum wmi_phy_mode peer_phymode; struct ath12k_link_sta *arsta; struct ieee80211_vif *vif; @@ -4992,9 +4991,14 @@ static void ath12k_sta_rc_update_wk(struct wiphy *wiphy, struct wiphy_work *wk) nss = min(nss, max(ath12k_mac_max_ht_nss(ht_mcs_mask), ath12k_mac_max_vht_nss(vht_mcs_mask))); + struct ath12k_wmi_peer_assoc_arg *peer_arg __free(kfree) = + kzalloc(sizeof(*peer_arg), GFP_KERNEL); + if (!peer_arg) + return; + if (changed & IEEE80211_RC_BW_CHANGED) { - ath12k_peer_assoc_h_phymode(ar, arvif, arsta, &peer_arg); - peer_phymode = peer_arg.peer_phymode; + ath12k_peer_assoc_h_phymode(ar, arvif, arsta, peer_arg); + peer_phymode = peer_arg->peer_phymode; if (bw > bw_prev) { /* Phymode shows maximum supported channel width, if we @@ -5096,9 +5100,9 @@ static void ath12k_sta_rc_update_wk(struct wiphy *wiphy, struct wiphy_work *wk) * other rates using peer_assoc command. */ ath12k_peer_assoc_prepare(ar, arvif, arsta, - &peer_arg, true); + peer_arg, true); - err = ath12k_wmi_send_peer_assoc_cmd(ar, &peer_arg); + err = ath12k_wmi_send_peer_assoc_cmd(ar, peer_arg); if (err) ath12k_warn(ar->ab, "failed to run peer assoc for STA %pM vdev %i: %d\n", arsta->addr, arvif->vdev_id, err); |