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b8dc54ba99
Integrating the following commit(s) to linux-yocto-rt/5.15:
6f51b8d2b7dc Add localversion for -RT release
3c8ff0c09156 sysfs: Add /sys/kernel/realtime entry
828d8f9b903f POWERPC: Allow to enable RT
6db76b613e53 powerpc/stackprotector: work around stack-guard init from atomic
44be16e0180a powerpc/kvm: Disable in-kernel MPIC emulation for PREEMPT_RT
a5c27dfc178a powerpc/pseries/iommu: Use a locallock instead local_irq_save()
dce767609e50 powerpc: traps: Use PREEMPT_RT
9cad1f8c7dd7 ARM64: Allow to enable RT
5bd881944e4f ARM: Allow to enable RT
715792fbbaf7 tty/serial/pl011: Make the locking work on RT
69221f2f5b91 tty/serial/omap: Make the locking RT aware
5fa50218f3e3 arm64: signal: Use ARCH_RT_DELAYS_SIGNAL_SEND.
c004c410d380 arm64/sve: Make kernel FPU protection RT friendly
7ffcb4485981 arm64/sve: Delay freeing memory in fpsimd_flush_thread()
322561563b01 KVM: arm/arm64: downgrade preempt_disable()d region to migrate_disable()
fe5ed302a1ec ARM: enable irq in translation/section permission fault handlers
f17af435c3a3 arch/arm64: Add lazy preempt support
10e096c7a491 powerpc: Add support for lazy preemption
5e15c21804be arm: Add support for lazy preemption
abc04080e1b3 entry: Fix the preempt lazy fallout
2fb1741e933b x86: Support for lazy preemption
24b379de7afc x86/entry: Use should_resched() in idtentry_exit_cond_resched()
860dbaa27ad1 sched: Add support for lazy preemption
4d5c9c824eee */softirq: Disable softirq stacks on PREEMPT_RT
2676f33e2cf4 generic/softirq: Disable softirq stacks on PREEMPT_RT
1886700e5658 leds: trigger: Disable CPU trigger on PREEMPT_RT
694e3f263964 drivers/block/zram: Replace bit spinlocks with rtmutex for -rt
97f765c75d6d mm/zsmalloc: Replace bit spinlock and get_cpu_var() usage.
49c7010ff12e tpm_tis: fix stall after iowrite*()s
df583a002c38 virt: acrn: Remove unsued acrn_irqfds_mutex.
a68737287907 smack: Guard smack_ipv6_lock definition within a SMACK_IPV6_PORT_LABELING block
ac9df8459eda ASoC: mediatek: mt8195: Remove unsued irqs_lock.
02bc2e3cbe09 genirq: update irq_set_irqchip_state documentation
ac932078b2e6 x86: Enable RT also on 32bit
e262f9f76c5b x86: Allow to enable RT
fef570ba4596 x86: kvm Require const tsc for RT
e5a9202c3535 signal/x86: Delay calling signals in atomic
2c0f317da8b9 drm/i915: Drop the irqs_disabled() check
06b3f43f370b drm/i915/gt: Use spin_lock_irq() instead of local_irq_disable() + spin_lock()
ac58ec9af512 drm/i915/gt: Queue and wait for the irq_work item.
aaa6ddcfd053 drm/i915: skip DRM_I915_LOW_LEVEL_TRACEPOINTS with NOTRACE
6db29073f209 drm/i915: Disable tracing points on PREEMPT_RT
5d34e949e11c drm/i915: Don't check for atomic context on PREEMPT_RT
0ca85efbe2e9 drm/i915: Don't disable interrupts on PREEMPT_RT during atomic updates
688ce2658570 drm/i915: Use preempt_disable/enable_rt() where recommended
9a76a256848c drm/i915: Don't disable interrupts and pretend a lock as been acquired in __timeline_mark_lock().
766248132ccf random: Make it work on rt
ba411ba63b8e x86: stackprotector: Avoid random pool on rt
3c158aab9acc panic: skip get_random_bytes for RT_FULL in init_oops_id
bf099c9ff70f net: dev: always take qdisc's busylock in __dev_xmit_skb()
783862056952 net: Dequeue in dev_cpu_dead() without the lock
61793a50d51d net: Use skbufhead with raw lock
4e369dc108af net/core: use local_bh_disable() in netif_rx_ni()
8056c6bd6380 rcu: Delay RCU-selftests
1372b981252b fs/dcache: disable preemption on i_dir_seq's write side
8f35827f634d fs/dcache: use swait_queue instead of waitqueue
dc26bf05c680 ptrace: fix ptrace vs tasklist_lock race
54332013d985 signal: Revert ptrace preempt magic
65309bca8d9c mm/memcontrol: Disable on PREEMPT_RT
5d193966a444 u64_stats: Disable preemption on 32bit-UP/SMP with RT during updates
9e7c9b1a7d21 softirq: Check preemption after reenabling interrupts
0d4e38f0610e crypto: cryptd - add a lock instead preempt_disable/local_bh_disable
4a01578f1878 sunrpc: Make svc_xprt_do_enqueue() use get_cpu_light()
03f8b0f0eedb net: Remove preemption disabling in netif_rx()
ddd725b42e48 mm/vmalloc: Another preempt disable region which sucks
28545272667f scsi/fcoe: Make RT aware.
dcb042c59ca4 md: raid5: Make raid5_percpu handling RT aware
393999301a85 block/mq: do not invoke preempt_disable()
8485ff82f922 kernel/sched: add {put|get}_cpu_light()
274408c7b291 sched: Make preempt_enable_no_resched() behave like preempt_enable() on PREEMPT_RT
9708837923a7 locking: Allow to include asm/spinlock_types.h from linux/spinlock_types_raw.h
b5f1fc042d2f lockdep/selftests: Adapt ww-tests for PREEMPT_RT
3e6dd28f0231 lockdep/selftests: Skip the softirq related tests on PREEMPT_RT
0da6a4f59354 lockdep/selftests: Unbalanced migrate_disable() & rcu_read_lock()
b29dc4a9ef20 lockdep/selftests: Add rtmutex to the last column
db92f5fc3fb7 lockdep: Make it RT aware
fae24609aafa rtmutex: Add rt_mutex_lock_nest_lock() and rt_mutex_lock_killable().
9d8c380fa819 rtmutex: Add a special case for ww-mutex handling.
d6b24f0f2a8a sched: Trigger warning if ->migration_disabled counter underflows.
6e09a284f2a6 lockdep/selftests: Avoid using local_lock_{acquire|release}().
bd833044483a locking: Remove rt_rwlock_is_contended()
36839db14247 jump-label: disable if stop_machine() is used
5a657ef837de tcp: Remove superfluous BH-disable around listening_hash
c11095ec78ef mm: workingset: replace IRQ-off check with a lockdep assert.
168e3d8875c7 cgroup: use irqsave in cgroup_rstat_flush_locked()
639d2eb6493f sched: Move mmdrop to RCU on RT
590419b10863 sched: Delay task stack freeing on RT
37860896be2e sched: Move kprobes cleanup out of finish_task_switch()
dc3565cd6bbd sched: Disable TTWU_QUEUE on RT
77db91d4d2b5 sched: Limit the number of task migrations per batch on RT
8ea3ab8bb409 locking/rt: Take RCU nesting into account for __might_resched()
b2f56dfeab18 sched: Make cond_resched_lock() variants RT aware
9bac73a04b71 sched: Make RCU nest depth distinct in __might_resched()
4f3dd3cb71e5 sched: Make might_sleep() output less confusing
b8c4ad5ceaec sched: Cleanup might_sleep() printks
588c973bd55b sched: Remove preempt_offset argument from __might_sleep()
5b8fbf83bb40 sched: Make cond_resched_*lock() variants consistent vs. might_sleep()
8e4b532478f2 sched: Clean up the might_sleep() underscore zoo
3a5e868f92f0 fscache: Use only one fscache_object_cong_wait.
67ba86618a1e fs/namespace: Boost the mount_lock.lock owner instead of spinning on PREEMPT_RT.
cad3bedc2a83 smp: Wake ksoftirqd on PREEMPT_RT instead do_softirq().
394e3bdd3242 irq_poll: Use raise_softirq_irqoff() in cpu_dead notifier
4de8f9d6a1ad irq_work: Also rcuwait for !IRQ_WORK_HARD_IRQ on PREEMPT_RT
87e75faa338d irq_work: Handle some irq_work in a per-CPU thread on PREEMPT_RT
d2100f67254d irq_work: Allow irq_work_sync() to sleep if irq_work() no IRQ support.
ada60e0098ea sched/rt: Annotate the RT balancing logic irqwork as IRQ_WORK_HARD_IRQ
f657de711e15 net: stats: Read the statistics in ___gnet_stats_copy_basic() instead of adding.
0d3a9c303dd9 net: sched: remove one pair of atomic operations
853f1349041a net: sched: fix logic error in qdisc_run_begin()
68f3b93760b7 net: sched: Allow statistics reads from softirq.
86e29a3d2d68 net: sched: Remove Qdisc::running sequence counter
304640d0b862 net: sched: Merge Qdisc::bstats and Qdisc::cpu_bstats data types
1c7a827367ee net: sched: Use _bstats_update/set() instead of raw writes
22701ce1b59f net: sched: Protect Qdisc::bstats with u64_stats
54538aff544a u64_stats: Introduce u64_stats_set()
69534c384086 gen_stats: Move remaining users to gnet_stats_add_queue().
e1f89d46623c mq, mqprio: Use gnet_stats_add_queue().
d3968711bb65 gen_stats: Add gnet_stats_add_queue().
c2b1af791919 gen_stats: Add instead Set the value in __gnet_stats_copy_basic().
3d38b89d239a net/sched: sch_ets: properly init all active DRR list handles
b59a9b759b1a kcov: Replace local_irq_save() with a local_lock_t.
8e2db8a2201a kcov: Avoid enable+disable interrupts if !in_task().
d244291fb820 kcov: Allocate per-CPU memory on the relevant node.
6eec9f99da0e Documentation/kcov: Define `ip' in the example.
e619eb9cb198 Documentation/kcov: Include types.h in the example.
f002c820156b x86/softirq: Disable softirq stacks on PREEMPT_RT
12b80085754b mm: Disable NUMA_BALANCING_DEFAULT_ENABLED and TRANSPARENT_HUGEPAGE on PREEMPT_RT
a1411120989b mm/scatterlist: Replace the !preemptible warning in sg_miter_stop()
56fb69cc8a0b mm: page_alloc: Use migrate_disable() in drain_local_pages_wq()
39d1d6a46eaa mm: Allow only SLUB on PREEMPT_RT
bf1b661248f6 crypto: testmgr - Only disable migration in crypto_disable_simd_for_test()
ddd1767afd69 samples/kfifo: Rename read_lock/write_lock
a6c921dd2368 net/core: disable NET_RX_BUSY_POLL on PREEMPT_RT
96cc6b82ae54 mm: Disable zsmalloc on PREEMPT_RT
f77af3465961 efi: Allow efi=runtime
8b3cde535f8f efi: Disable runtime services on RT
7082e94c5405 lockdep: Let lock_is_held_type() detect recursive read as read
ffc314d30f16 genirq: Disable irqfixup/poll on PREEMPT_RT.
1ec49f38b6ae genirq: Move prio assignment into the newly created thread
e272fc66d6bc kthread: Move prio/affinite change into the newly created thread
468813504d5a rcutorture: Avoid problematic critical section nesting on PREEMPT_RT
e6a408241cee sched: Switch wait_task_inactive to HRTIMER_MODE_REL_HARD
cd6bda4839a6 printk: Enhance the condition check of msleep in pr_flush()
2ad1282d77e8 printk: add pr_flush()
cd582486f3e8 printk: add console handover
25f13bd1d07b printk: remove deferred printing
2d440f3f2ee5 printk: move console printing to kthreads
df0a27dbd128 printk: introduce kernel sync mode
4efb519165f1 printk: use seqcount_latch for console_seq
8653ea7d3c45 printk: call boot_delay_msec() in printk_delay()
892cddfada1f printk: relocate printk_delay()
e1ac77117990 serial: 8250: implement write_atomic
967b98b7c528 kdb: only use atomic consoles for output mirroring
36422a33e3b3 console: add write_atomic interface
7b9055c4c17d printk: rename printk cpulock API and always disable interrupts
3791dee37847 arm64: mm: Make arch_faults_on_old_pte() check for migratability
e5b82790a28d sched: Introduce migratable()
0cf3b776c423 rcu/tree: Protect rcu_rdp_is_offloaded() invocations on RT
(From OE-Core rev: a784cd98bb095e19957bc5aeec3c3303bea64def)
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Poky
Poky is an integration of various components to form a pre-packaged build system and development environment which is used as a development and validation tool by the Yocto Project. It features support for building customised embedded style device images and custom containers. There are reference demo images ranging from X11/GTK+ to Weston, commandline and more. The system supports cross-architecture application development using QEMU emulation and a standalone toolchain and SDK suitable for IDE integration.
Additional information on the specifics of hardware that Poky supports is available in README.hardware. Further hardware support can easily be added in the form of BSP layers which extend the systems capabilities in a modular way. Many layers are available and can be found through the layer index.
As an integration layer Poky consists of several upstream projects such as BitBake, OpenEmbedded-Core, Yocto documentation, the 'meta-yocto' layer which has configuration and hardware support components. These components are all part of the Yocto Project and OpenEmbedded ecosystems.
The Yocto Project has extensive documentation about the system including a reference manual which can be found at https://docs.yoctoproject.org/
OpenEmbedded is the build architecture used by Poky and the Yocto project. For information about OpenEmbedded, see the OpenEmbedded website.
Contribution Guidelines
The project works using a mailing list patch submission process. Patches should be sent to the mailing list for the repository the components originate from (see below). Throughout the Yocto Project, the README files in the component in question should detail where to send patches, who the maintainers are and where bugs should be reported.
A guide to submitting patches to OpenEmbedded is available at:
https://www.openembedded.org/wiki/How_to_submit_a_patch_to_OpenEmbedded
There is good documentation on how to write/format patches at:
https://www.openembedded.org/wiki/Commit_Patch_Message_Guidelines
Where to Send Patches
As Poky is an integration repository (built using a tool called combo-layer), patches against the various components should be sent to their respective upstreams:
OpenEmbedded-Core (files in meta/, meta-selftest/, meta-skeleton/, scripts/):
- Git repository: https://git.openembedded.org/openembedded-core/
- Mailing list: openembedded-core@lists.openembedded.org
BitBake (files in bitbake/):
- Git repository: https://git.openembedded.org/bitbake/
- Mailing list: bitbake-devel@lists.openembedded.org
Documentation (files in documentation/):
- Git repository: https://git.yoctoproject.org/cgit/cgit.cgi/yocto-docs/
- Mailing list: docs@lists.yoctoproject.org
meta-yocto (files in meta-poky/, meta-yocto-bsp/):
- Git repository: https://git.yoctoproject.org/cgit/cgit.cgi/meta-yocto
- Mailing list: poky@lists.yoctoproject.org
If in doubt, check the openembedded-core git repository for the content you intend to modify as most files are from there unless clearly one of the above categories. Before sending, be sure the patches apply cleanly to the current git repository branch in question.