Return-path: Received: from mail-ob0-f178.google.com ([209.85.214.178]:33464 "EHLO mail-ob0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751437AbcBVUNn (ORCPT ); Mon, 22 Feb 2016 15:13:43 -0500 Subject: Re: [PATCH][V2] rtlwifi: pass struct rtl_stats by reference as it is more efficient To: Colin King , Chaoming Li , Kalle Valo , Priit Laes , linux-wireless@vger.kernel.org, netdev@vger.kernel.org References: <1456140946-12509-1-git-send-email-colin.king@canonical.com> Cc: linux-kernel@vger.kernel.org From: Larry Finger Message-ID: <56CB6BF4.5000600@lwfinger.net> (sfid-20160222_211425_660026_39B78760) Date: Mon, 22 Feb 2016 14:13:40 -0600 MIME-Version: 1.0 In-Reply-To: <1456140946-12509-1-git-send-email-colin.king@canonical.com> Content-Type: text/plain; charset=windows-1252; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: On 02/22/2016 05:35 AM, Colin King wrote: > From: Colin Ian King > > passing rtl_stats by value is inefficient; the structure is over 300 > bytes in size and generally just one field (packet_report_type) > is being accessed, so the pass by value is a relatively large overhead. > This change just affects just the rx_command_packet calls. > > Signed-off-by: Colin Ian King Looks good and tests OK with rtl8723be. Acked-by: Larry Finger Thanks, Larry > --- > drivers/net/wireless/realtek/rtlwifi/pci.c | 2 +- > drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c | 2 +- > drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.h | 2 +- > drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.c | 6 +++--- > drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.h | 2 +- > drivers/net/wireless/realtek/rtlwifi/rtl8723ae/trx.c | 2 +- > drivers/net/wireless/realtek/rtlwifi/rtl8723ae/trx.h | 2 +- > drivers/net/wireless/realtek/rtlwifi/rtl8723be/trx.c | 4 ++-- > drivers/net/wireless/realtek/rtlwifi/rtl8723be/trx.h | 2 +- > drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.c | 4 ++-- > drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.h | 2 +- > drivers/net/wireless/realtek/rtlwifi/wifi.h | 2 +- > 12 files changed, 16 insertions(+), 16 deletions(-) > > diff --git a/drivers/net/wireless/realtek/rtlwifi/pci.c b/drivers/net/wireless/realtek/rtlwifi/pci.c > index 7f471bf..4153e7f 100644 > --- a/drivers/net/wireless/realtek/rtlwifi/pci.c > +++ b/drivers/net/wireless/realtek/rtlwifi/pci.c > @@ -855,7 +855,7 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw) > } > /* handle command packet here */ > if (rtlpriv->cfg->ops->rx_command_packet && > - rtlpriv->cfg->ops->rx_command_packet(hw, stats, skb)) { > + rtlpriv->cfg->ops->rx_command_packet(hw, &stats, skb)) { > dev_kfree_skb_any(skb); > goto new_trx_end; > } > diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c b/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c > index 791efbe..1170106 100644 > --- a/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c > +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c > @@ -851,7 +851,7 @@ void rtl88ee_tx_polling(struct ieee80211_hw *hw, u8 hw_queue) > } > > u32 rtl88ee_rx_command_packet(struct ieee80211_hw *hw, > - struct rtl_stats status, > + const struct rtl_stats *status, > struct sk_buff *skb) > { > return 0; > diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.h b/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.h > index eab5ae0..5a24d19 100644 > --- a/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.h > +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.h > @@ -790,7 +790,7 @@ void rtl88ee_tx_fill_cmddesc(struct ieee80211_hw *hw, u8 *pdesc, > bool firstseg, bool lastseg, > struct sk_buff *skb); > u32 rtl88ee_rx_command_packet(struct ieee80211_hw *hw, > - struct rtl_stats status, > + const struct rtl_stats *status, > struct sk_buff *skb); > > #endif > diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.c > index d39ee67..24eff8e 100644 > --- a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.c > +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.c > @@ -1105,13 +1105,13 @@ void rtl92ee_tx_polling(struct ieee80211_hw *hw, u8 hw_queue) > } > > u32 rtl92ee_rx_command_packet(struct ieee80211_hw *hw, > - struct rtl_stats status, > + const struct rtl_stats *status, > struct sk_buff *skb) > { > u32 result = 0; > struct rtl_priv *rtlpriv = rtl_priv(hw); > > - switch (status.packet_report_type) { > + switch (status->packet_report_type) { > case NORMAL_RX: > result = 0; > break; > @@ -1121,7 +1121,7 @@ u32 rtl92ee_rx_command_packet(struct ieee80211_hw *hw, > break; > default: > RT_TRACE(rtlpriv, COMP_RECV, DBG_TRACE, > - "Unknown packet type %d\n", status.packet_report_type); > + "Unknown packet type %d\n", status->packet_report_type); > break; > } > > diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.h b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.h > index 8f78ac9..a4c3834 100644 > --- a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.h > +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.h > @@ -857,6 +857,6 @@ void rtl92ee_tx_fill_cmddesc(struct ieee80211_hw *hw, u8 *pdesc, > bool firstseg, bool lastseg, > struct sk_buff *skb); > u32 rtl92ee_rx_command_packet(struct ieee80211_hw *hw, > - struct rtl_stats status, > + const struct rtl_stats *status, > struct sk_buff *skb); > #endif > diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/trx.c b/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/trx.c > index 2f7c144..7b4a9b6 100644 > --- a/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/trx.c > +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/trx.c > @@ -710,7 +710,7 @@ void rtl8723e_tx_polling(struct ieee80211_hw *hw, u8 hw_queue) > } > > u32 rtl8723e_rx_command_packet(struct ieee80211_hw *hw, > - struct rtl_stats status, > + const struct rtl_stats *status, > struct sk_buff *skb) > { > return 0; > diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/trx.h b/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/trx.h > index 017da7e..32970bf 100644 > --- a/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/trx.h > +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/trx.h > @@ -716,6 +716,6 @@ void rtl8723e_tx_fill_cmddesc(struct ieee80211_hw *hw, u8 *pdesc, > bool firstseg, bool lastseg, > struct sk_buff *skb); > u32 rtl8723e_rx_command_packet(struct ieee80211_hw *hw, > - struct rtl_stats status, > + const struct rtl_stats *status, > struct sk_buff *skb); > #endif > diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/trx.c b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/trx.c > index 338ec9a..6034597 100644 > --- a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/trx.c > +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/trx.c > @@ -758,13 +758,13 @@ void rtl8723be_tx_polling(struct ieee80211_hw *hw, u8 hw_queue) > } > > u32 rtl8723be_rx_command_packet(struct ieee80211_hw *hw, > - struct rtl_stats status, > + const struct rtl_stats *status, > struct sk_buff *skb) > { > u32 result = 0; > struct rtl_priv *rtlpriv = rtl_priv(hw); > > - switch (status.packet_report_type) { > + switch (status->packet_report_type) { > case NORMAL_RX: > result = 0; > break; > diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/trx.h b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/trx.h > index 45949ac..40c36607 100644 > --- a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/trx.h > +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/trx.h > @@ -620,6 +620,6 @@ void rtl8723be_tx_fill_cmddesc(struct ieee80211_hw *hw, u8 *pdesc, > bool firstseg, bool lastseg, > struct sk_buff *skb); > u32 rtl8723be_rx_command_packet(struct ieee80211_hw *hw, > - struct rtl_stats status, > + const struct rtl_stats *status, > struct sk_buff *skb); > #endif > diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.c b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.c > index 174743a..41efaa1 100644 > --- a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.c > +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.c > @@ -998,13 +998,13 @@ void rtl8821ae_tx_polling(struct ieee80211_hw *hw, u8 hw_queue) > } > > u32 rtl8821ae_rx_command_packet(struct ieee80211_hw *hw, > - struct rtl_stats status, > + const struct rtl_stats *status, > struct sk_buff *skb) > { > u32 result = 0; > struct rtl_priv *rtlpriv = rtl_priv(hw); > > - switch (status.packet_report_type) { > + switch (status->packet_report_type) { > case NORMAL_RX: > result = 0; > break; > diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.h b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.h > index 3140904..ad565be 100644 > --- a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.h > +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.h > @@ -615,6 +615,6 @@ void rtl8821ae_tx_fill_cmddesc(struct ieee80211_hw *hw, u8 *pdesc, > bool firstseg, bool lastseg, > struct sk_buff *skb); > u32 rtl8821ae_rx_command_packet(struct ieee80211_hw *hw, > - struct rtl_stats status, > + const struct rtl_stats *status, > struct sk_buff *skb); > #endif > diff --git a/drivers/net/wireless/realtek/rtlwifi/wifi.h b/drivers/net/wireless/realtek/rtlwifi/wifi.h > index 4544752..1a79082 100644 > --- a/drivers/net/wireless/realtek/rtlwifi/wifi.h > +++ b/drivers/net/wireless/realtek/rtlwifi/wifi.h > @@ -2194,7 +2194,7 @@ struct rtl_hal_ops { > bool (*get_btc_status) (void); > bool (*is_fw_header)(struct rtlwifi_firmware_header *hdr); > u32 (*rx_command_packet)(struct ieee80211_hw *hw, > - struct rtl_stats status, struct sk_buff *skb); > + const struct rtl_stats *status, struct sk_buff *skb); > void (*add_wowlan_pattern)(struct ieee80211_hw *hw, > struct rtl_wow_pattern *rtl_pattern, > u8 index); >