linux-kernel - [PATCH v2 11/35] ath10k: optimize ath10k_snoc_napi_poll() by using find

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Message-Id: <20231203193307.542794-10-yury.norov@gmail.com>
Date:   Sun,  3 Dec 2023 11:32:43 -0800
From:   Yury Norov <yury.norov@...il.com>
To:     linux-kernel@...r.kernel.org, Kalle Valo <kvalo@...nel.org>,
        Jeff Johnson <quic_jjohnson@...cinc.com>,
        ath10k@...ts.infradead.org, linux-wireless@...r.kernel.org
Cc:     Yury Norov <yury.norov@...il.com>, Jan Kara <jack@...e.cz>,
        Mirsad Todorovac <mirsad.todorovac@....unizg.hr>,
        Matthew Wilcox <willy@...radead.org>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Maxim Kuvyrkov <maxim.kuvyrkov@...aro.org>,
        Alexey Klimov <klimov.linux@...il.com>,
        Bart Van Assche <bvanassche@....org>,
        Sergey Shtylyov <s.shtylyov@....ru>
Subject: [PATCH v2 11/35] ath10k: optimize ath10k_snoc_napi_poll() by using find_bit()

ath10k_snoc_napi_poll() traverses pending_ce_irqs bitmap bit by bit.
We can do it faster by using for_each_test_and_clear_bit() iterator.

Signed-off-by: Yury Norov <yury.norov@...il.com>
---
 drivers/net/wireless/ath/ath10k/snoc.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c
index 2c39bad7ebfb..a1db5a973780 100644
--- a/drivers/net/wireless/ath/ath10k/snoc.c
+++ b/drivers/net/wireless/ath/ath10k/snoc.c
@@ -1237,11 +1237,10 @@ static int ath10k_snoc_napi_poll(struct napi_struct *ctx, int budget)
 		return done;
 	}
 
-	for (ce_id = 0; ce_id < CE_COUNT; ce_id++)
-		if (test_and_clear_bit(ce_id, ar_snoc->pending_ce_irqs)) {
-			ath10k_ce_per_engine_service(ar, ce_id);
-			ath10k_ce_enable_interrupt(ar, ce_id);
-		}
+	for_each_test_and_clear_bit(ce_id, ar_snoc->pending_ce_irqs, CE_COUNT) {
+		ath10k_ce_per_engine_service(ar, ce_id);
+		ath10k_ce_enable_interrupt(ar, ce_id);
+	}
 
 	done = ath10k_htt_txrx_compl_task(ar, budget);
 
-- 
2.40.1