Zhou Guanghui 5e580cce4d 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>		2022-04-20 09:08:27 +02:00
..
amd_iommu.c	iommu/amd: Fix sleeping in atomic in increase_address_space()	2021-03-11 13:51:05 +01:00
amd_iommu_init.c	iommu/amd: Fix loop timeout issue in iommu_ga_log_enable()	2022-02-08 18:16:28 +01:00
amd_iommu_proto.h
amd_iommu_types.h	iommu/amd: Set DTE[IntTabLen] to represent 512 IRTEs	2020-12-11 13:39:06 +01:00
amd_iommu_v2.c
arm-smmu-regs.h
arm-smmu-v3.c	iommu/arm-smmu-v3: fix event handling soft lockup	2022-04-20 09:08:27 +02:00
arm-smmu.c
dma-iommu.c	iommu/dma: Fix MSI reservation allocation	2020-03-20 10:54:18 +01:00
dmar.c	iommu/vt-d: Fix sysfs leak in alloc_iommu()	2021-06-03 08:36:12 +02:00
exynos-iommu.c	iommu/exynos: add missing put_device() call in exynos_iommu_of_xlate()	2020-10-14 09:51:08 +02:00
fsl_pamu.c
fsl_pamu.h
fsl_pamu_domain.c
fsl_pamu_domain.h
intel-iommu.c	iommu/vt-d: Do not use flush-queue when caching-mode is on	2021-02-10 09:12:10 +01:00
intel-svm.c	iommu/vt-d: Fix mm reference leak	2020-04-24 08:01:21 +02:00
intel_irq_remapping.c	iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping()	2022-02-08 18:16:28 +01:00
io-pgtable-arm-v7s.c
io-pgtable-arm.c	iommu/io-pgtable-arm: Fix race handling in split_blk_unmap()	2019-11-24 08:22:52 +01:00
io-pgtable.c
io-pgtable.h
iommu-sysfs.c
iommu-traces.c
iommu.c	iommu: Fix reference count leak in iommu_group_alloc.	2020-06-03 08:18:03 +02:00
iova.c	iommu/iova: Fix race between FQ timeout and teardown	2022-01-27 09:00:53 +01:00
ipmmu-vmsa.c
irq_remapping.c
irq_remapping.h
Kconfig
Makefile
msm_iommu.c
msm_iommu.h
msm_iommu_hw-8xxx.h
mtk_iommu.c	iommu/mediatek: Fix iova_to_phys PA start for 4GB mode	2020-01-27 14:46:44 +01:00
mtk_iommu.h
mtk_iommu_v1.c
of_iommu.c
omap-iommu-debug.c	iommu/omap: Check for failure of a call to omap_iommu_dump_ctx	2020-08-21 09:48:21 +02:00
omap-iommu.c
omap-iommu.h
omap-iopgtable.h
qcom_iommu.c	iommu/qcom: Fix local_base status check	2020-05-05 19:15:51 +02:00
rockchip-iommu.c
s390-iommu.c
tegra-gart.c
tegra-smmu.c	iommu/tegra-smmu: Fix page tables in > 4 GiB memory	2020-01-04 13:59:36 +01:00