Zhou Guanghui 0b9cf0b599 iommu/arm-smmu-v3: fix event handling soft lockup ... [ Upstream commit 30de2b541a ] During event processing, events are read from the event queue one by one until the queue is empty.If the master device continuously requests address access at the same time and the SMMU generates events, the cyclic processing of the event takes a long time and softlockup warnings may be reported. arm-smmu-v3 arm-smmu-v3.34.auto: event 0x0a received: arm-smmu-v3 arm-smmu-v3.34.auto: 0x00007f220000280a arm-smmu-v3 arm-smmu-v3.34.auto: 0x000010000000007e arm-smmu-v3 arm-smmu-v3.34.auto: 0x00000000034e8670 watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [irq/268-arm-smm:247] Call trace: _dev_info+0x7c/0xa0 arm_smmu_evtq_thread+0x1c0/0x230 irq_thread_fn+0x30/0x80 irq_thread+0x128/0x210 kthread+0x134/0x138 ret_from_fork+0x10/0x1c Kernel panic - not syncing: softlockup: hung tasks Fix this by calling cond_resched() after the event information is printed. Signed-off-by: Zhou Guanghui <zhouguanghui1@huawei.com> Link: https://lore.kernel.org/r/20220119070754.26528-1-zhouguanghui1@huawei.com Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-04-13 21:00:56 +02:00
..
amd	iommu/amd: Recover from event log overflow	2022-03-08 19:09:31 +01:00
arm	iommu/arm-smmu-v3: fix event handling soft lockup	2022-04-13 21:00:56 +02:00
intel	iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping()	2022-02-08 18:30:37 +01:00
dma-iommu.c	iommu/dma: Fix compile warning in 32-bit builds	2021-07-14 16:56:55 +02:00
exynos-iommu.c
fsl_pamu_domain.c
fsl_pamu_domain.h
fsl_pamu.c
fsl_pamu.h
hyperv-iommu.c
io-pgtable-arm-v7s.c	iommu/io-pgtable-arm-v7s: Add error handle for page table allocation failure	2022-01-27 10:53:43 +01:00
io-pgtable-arm.c	iommu/io-pgtable-arm: Fix table descriptor paddr formatting	2022-01-27 10:54:06 +01:00
io-pgtable-arm.h
io-pgtable.c
ioasid.c
iommu-debugfs.c
iommu-sysfs.c
iommu-traces.c
iommu.c	iommu: Fix potential use-after-free during probe	2022-02-16 12:54:31 +01:00
iova.c	iommu/iova: Improve 32-bit free space estimate	2022-04-08 14:39:48 +02:00
ipmmu-vmsa.c	iommu/ipmmu-vmsa: Check for error num after setting mask	2022-04-08 14:40:15 +02:00
irq_remapping.c
irq_remapping.h
Kconfig
Makefile
msm_iommu_hw-8xxx.h
msm_iommu.c
msm_iommu.h
mtk_iommu_v1.c
mtk_iommu.c	iommu: Switch gather->end to the inclusive end	2021-03-04 11:38:01 +01:00
mtk_iommu.h
of_iommu.c
omap-iommu-debug.c
omap-iommu.c
omap-iommu.h
omap-iopgtable.h
rockchip-iommu.c
s390-iommu.c
sun50i-iommu.c
tegra-gart.c
tegra-smmu.c
virtio-iommu.c	iommu/virtio: Add missing MODULE_DEVICE_TABLE	2021-06-03 09:00:49 +02:00