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Subject[ANNOUNCE] v5.2.14-rt7
Dear RT folks!

I'm pleased to announce the v5.2.14-rt7 patch set.

Changes since v5.2.14-rt6:

- The recent hrtimer fix broke UP builds as reported by Alexander
Dahl.

Known issues
- rcutorture is currently broken on -RT. Reported by Juri Lelli.

The delta patch against v5.2.14-rt6 is appended below and can be found here:

https://cdn.kernel.org/pub/linux/kernel/projects/rt/5.2/incr/patch-5.2.14-rt6-rt7.patch.xz

You can get this release via the git tree at:

git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git v5.2.14-rt7

The RT patch against v5.2.14 can be found here:

https://cdn.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patch-5.2.14-rt7.patch.xz

The split quilt queue is available at:

https://cdn.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.14-rt7.tar.xz

Sebastian

diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index 5eb45a868de9a..b3adac366fd17 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -141,6 +141,11 @@ static struct hrtimer_cpu_base migration_cpu_base = {

#define migration_base migration_cpu_base.clock_base[0]

+static inline bool is_migration_base(struct hrtimer_clock_base *base)
+{
+ return base == &migration_base;
+}
+
/*
* We are using hashed locking: holding per_cpu(hrtimer_bases)[n].lock
* means that all timers which are tied to this base via timer->base are
@@ -265,6 +270,11 @@ switch_hrtimer_base(struct hrtimer *timer, struct hrtimer_clock_base *base,

#else /* CONFIG_SMP */

+static inline bool is_migration_base(struct hrtimer_clock_base *base)
+{
+ return false;
+}
+
static inline struct hrtimer_clock_base *
lock_hrtimer_base(const struct hrtimer *timer, unsigned long *flags)
{
@@ -934,7 +944,7 @@ void hrtimer_grab_expiry_lock(const struct hrtimer *timer)
{
struct hrtimer_clock_base *base = READ_ONCE(timer->base);

- if (timer->is_soft && base != &migration_base) {
+ if (timer->is_soft && is_migration_base(base)) {
spin_lock(&base->cpu_base->softirq_expiry_lock);
spin_unlock(&base->cpu_base->softirq_expiry_lock);
}
diff --git a/localversion-rt b/localversion-rt
index 8fc605d806670..045478966e9f1 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt6
+-rt7
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