linux-kernel - [PATCH 0/4] scsi: hisi_sas: Switch to use tasklet over threaded irq handling

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Message-ID: <20250822075951.2051639-1-liyihang9@h-partners.com>
Date: Fri, 22 Aug 2025 15:59:47 +0800
From: Yihang Li <liyihang9@...artners.com>
To: <martin.petersen@...cle.com>, <James.Bottomley@...senPartnership.com>
CC: <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linuxarm@...wei.com>, <liyihang9@...wei.com>, <liuyonglong@...wei.com>,
	<prime.zeng@...ilicon.com>
Subject: [PATCH 0/4] scsi: hisi_sas: Switch to use tasklet over threaded irq handling

We found that when the CPU handling the interrupt thread is occupied by
other high-priority processes, the interrupt thread will not be scheduled.
So there is a change to switch the driver to use tasklet over threaded
interrupt handling.

Yihang Li (4):
  scsi: hisi_sas: Use tasklet to process CQ interrupts
  scsi: hisi_sas: replace spin_lock/spin_unlock with
    spin_lock_irqsave/spin_unlock_restore
  scsi: hisi_sas: Remove cond_resched() in bottom half of interrupt
  scsi: hisi_sas: Remove unused hisi_sas_sync_poll_cqs()

 drivers/scsi/hisi_sas/hisi_sas.h       |  2 +-
 drivers/scsi/hisi_sas/hisi_sas_main.c  | 76 ++++++++++++--------------
 drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 48 ++++++++++------
 drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 43 ++++++++-------
 4 files changed, 89 insertions(+), 80 deletions(-)

-- 
2.33.0