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3c9f78f6d7
5.4-stable included a backport of: Author: Eric W. Biederman <ebiederm@xmission.com> Date: Thu Dec 3 14:11:13 2020 -0600 rwsem: Implement down_read_interruptible [ Upstream commit 31784cff7ee073b34d6eddabb95e3be2880a425c ] In preparation for converting exec_update_mutex to a rwsem so that multiple readers can execute in parallel and not deadlock, add down_read_interruptible. This is needed for perf_event_open to be converted (with no semantic changes) from working on a mutex to wroking on a rwsem. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/87k0tybqfy.fsf@x220.int.ebiederm.org Signed-off-by: Sasha Levin <sashal@kernel.org> We implement a -rt variant to fix the build issues. (From OE-Core rev: e610fb7cc22447441f18a9b1bffe58aadb6aaab6) Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
46 lines
2.0 KiB
BlitzBasic
46 lines
2.0 KiB
BlitzBasic
KBRANCH ?= "v5.4/standard/preempt-rt/base"
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require recipes-kernel/linux/linux-yocto.inc
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# Skip processing of this recipe if it is not explicitly specified as the
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# PREFERRED_PROVIDER for virtual/kernel. This avoids errors when trying
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# to build multiple virtual/kernel providers, e.g. as dependency of
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# core-image-rt-sdk, core-image-rt.
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python () {
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if d.getVar("KERNEL_PACKAGE_NAME") == "kernel" and d.getVar("PREFERRED_PROVIDER_virtual/kernel") != "linux-yocto-rt":
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raise bb.parse.SkipRecipe("Set PREFERRED_PROVIDER_virtual/kernel to linux-yocto-rt to enable it")
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}
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SRCREV_machine ?= "6b0893e9fddb5473b181b29059fe64980f353c83"
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SRCREV_meta ?= "d676bf5ff7b7071e14f44498d2482c0a596f14cd"
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SRC_URI = "git://git.yoctoproject.org/linux-yocto.git;branch=${KBRANCH};name=machine \
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git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-5.4;destsuffix=${KMETA}"
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LINUX_VERSION ?= "5.4.90"
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LIC_FILES_CHKSUM = "file://COPYING;md5=bbea815ee2795b2f4230826c0c6b8814"
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DEPENDS += "${@bb.utils.contains('ARCH', 'x86', 'elfutils-native', '', d)}"
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DEPENDS += "openssl-native util-linux-native"
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PV = "${LINUX_VERSION}+git${SRCPV}"
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KMETA = "kernel-meta"
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KCONF_BSP_AUDIT_LEVEL = "2"
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LINUX_KERNEL_TYPE = "preempt-rt"
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COMPATIBLE_MACHINE = "(qemux86|qemux86-64|qemuarm|qemuarmv5|qemuarm64|qemuppc|qemumips)"
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KERNEL_DEVICETREE_qemuarmv5 = "versatile-pb.dtb"
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# Functionality flags
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KERNEL_EXTRA_FEATURES ?= "features/netfilter/netfilter.scc features/taskstats/taskstats.scc"
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KERNEL_FEATURES_append = " ${KERNEL_EXTRA_FEATURES}"
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KERNEL_FEATURES_append_qemuall=" cfg/virtio.scc features/drm-bochs/drm-bochs.scc"
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KERNEL_FEATURES_append_qemux86=" cfg/sound.scc cfg/paravirt_kvm.scc"
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KERNEL_FEATURES_append_qemux86-64=" cfg/sound.scc cfg/paravirt_kvm.scc"
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KERNEL_FEATURES_append = "${@bb.utils.contains("DISTRO_FEATURES", "ptest", " features/scsi/scsi-debug.scc", "", d)}"
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KERNEL_FEATURES_append = "${@bb.utils.contains("DISTRO_FEATURES", "ptest", " features/gpio/mockup.scc", "", d)}"
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