* [ANNOUNCE] 4.14.175-rt81
@ 2020-04-17 19:52 Tom Zanussi
0 siblings, 0 replies; only message in thread
From: Tom Zanussi @ 2020-04-17 19:52 UTC (permalink / raw)
To: LKML, linux-rt-users, Steven Rostedt, Thomas Gleixner,
Carsten Emde, John Kacur, Sebastian Andrzej Siewior,
Daniel Wagner, LKML, linux-rt-users, Steven Rostedt,
Thomas Gleixner, Carsten Emde, John Kacur,
Sebastian Andrzej Siewior, Daniel Wagner, Tom Zanussi,
Clark Williams, Tom Zanussi
Hello RT Folks!
I'm pleased to announce the 4.14.175-rt81 stable release.
You can get this release via the git tree at:
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git
branch: v4.14-rt
Head SHA1: aad6ed737a078d30926be3205fa67b03018a6ded
Or to build 4.14.175-rt81 directly, the following patches should be applied:
https://www.kernel.org/pub/linux/kernel/v4.x/linux-4.14.tar.xz
https://www.kernel.org/pub/linux/kernel/v4.x/patch-4.14.175.xz
https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/patch-4.14.175-rt81.patch.xz
You can also build from 4.14.175-rt80 by applying the incremental patch:
https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/incr/patch-4.14.175-rt80-rt81.patch.xz
Enjoy!
Tom
Changes from v4.14.175-rt80:
---
Steven Rostedt (VMware) (1):
irq_work: Fix checking of IRQ_WORK_LAZY flag set on non PREEMPT_RT
Tom Zanussi (1):
Linux 4.14.175-rt81
---
kernel/irq_work.c | 12 +++++++++---
localversion-rt | 2 +-
2 files changed, 10 insertions(+), 4 deletions(-)
---
diff --git a/kernel/irq_work.c b/kernel/irq_work.c
index 2899ba0d23d1..838b56cef5fe 100644
--- a/kernel/irq_work.c
+++ b/kernel/irq_work.c
@@ -57,6 +57,12 @@ void __weak arch_irq_work_raise(void)
*/
}
+static inline bool use_lazy_list(struct irq_work *work)
+{
+ return (IS_ENABLED(CONFIG_PREEMPT_RT_FULL) && !(work->flags & IRQ_WORK_HARD_IRQ))
+ || (work->flags & IRQ_WORK_LAZY);
+}
+
#ifdef CONFIG_SMP
/*
* Enqueue the irq_work @work on @cpu unless it's already pending
@@ -78,7 +84,7 @@ bool irq_work_queue_on(struct irq_work *work, int cpu)
if (!irq_work_claim(work))
return false;
- if (IS_ENABLED(CONFIG_PREEMPT_RT_FULL) && !(work->flags & IRQ_WORK_HARD_IRQ))
+ if (use_lazy_list(work))
list = &per_cpu(lazy_list, cpu);
else
list = &per_cpu(raised_list, cpu);
@@ -95,7 +101,7 @@ EXPORT_SYMBOL_GPL(irq_work_queue_on);
bool irq_work_queue(struct irq_work *work)
{
struct llist_head *list;
- bool lazy_work, realtime = IS_ENABLED(CONFIG_PREEMPT_RT_FULL);
+ bool lazy_work;
/* Only queue if not already pending */
if (!irq_work_claim(work))
@@ -106,7 +112,7 @@ bool irq_work_queue(struct irq_work *work)
lazy_work = work->flags & IRQ_WORK_LAZY;
- if (lazy_work || (realtime && !(work->flags & IRQ_WORK_HARD_IRQ)))
+ if (use_lazy_list(work))
list = this_cpu_ptr(&lazy_list);
else
list = this_cpu_ptr(&raised_list);
diff --git a/localversion-rt b/localversion-rt
index 5ba2c2091cf9..8269ec129c0c 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt80
+-rt81
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