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Date: Mon, 2 Dec 2013 11:36:56 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: LKML <linux-kernel@...r.kernel.org>,
linux-rt-users <linux-rt-users@...r.kernel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>,
Carsten Emde <C.Emde@...dl.org>,
John Kacur <jkacur@...hat.com>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [ANNOUNCE] 3.8.13.13-rt25
Dear RT Folks,
I'm pleased to announce the 3.8.13.13-rt25 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: v3.8-rt
Head SHA1: 4d81f9bebd839789f8d3672f1bf6fdcbe3a8740f
Or to build 3.8.13.13-rt25 directly, the following patches should be applied:
http://www.kernel.org/pub/linux/kernel/v3.x/linux-3.8.tar.xz
http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.8.13.xz
http://www.kernel.org/pub/linux/kernel/projects/rt/3.8/stable/patch-3.8.13.13.xz
http://www.kernel.org/pub/linux/kernel/projects/rt/3.8/patch-3.8.13.13-rt25.patch.xz
You can also build from 3.8.13.13-rt24 by applying the incremental patch:
http://www.kernel.org/pub/linux/kernel/projects/rt/3.8/incr/patch-3.8.13.13-rt24-rt25.patch.xz
Enjoy,
-- Steve
Changes from v3.8.13.13-rt24:
---
Mike Galbraith (1):
hwlat-detector: Don't ignore threshold module parameter
Sebastian Andrzej Siewior (2):
mm/slub: do not rely on slab_cached passed to free_delayed()
drm: remove preempt_disable() from drm_calc_vbltimestamp_from_scanoutpos()
Steven Rostedt (Red Hat) (1):
Linux 3.8.13.13-rt25
Thomas Pfaff (1):
genirq: Set the irq thread policy without checking CAP_SYS_NICE
Wolfram Sang (1):
Kind of revert "powerpc: 52xx: provide a default in mpc52xx_irqhost_map()"
Yang Shi (1):
mm/memcontrol: Don't call schedule_work_on in preemption disabled context
----
arch/powerpc/platforms/52xx/mpc52xx_pic.c | 5 ++---
drivers/gpu/drm/drm_irq.c | 7 -------
drivers/misc/hwlat_detector.c | 2 +-
kernel/irq/manage.c | 2 +-
localversion-rt | 2 +-
mm/memcontrol.c | 4 ++--
mm/slub.c | 10 +++++-----
7 files changed, 12 insertions(+), 20 deletions(-)
---------------------------
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pic.c b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
index b69221b..2898b73 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_pic.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
@@ -340,7 +340,7 @@ static int mpc52xx_irqhost_map(struct irq_domain *h, unsigned int virq,
{
int l1irq;
int l2irq;
- struct irq_chip *irqchip;
+ struct irq_chip *uninitialized_var(irqchip);
void *hndlr;
int type;
u32 reg;
@@ -373,9 +373,8 @@ static int mpc52xx_irqhost_map(struct irq_domain *h, unsigned int virq,
case MPC52xx_IRQ_L1_PERP: irqchip = &mpc52xx_periph_irqchip; break;
case MPC52xx_IRQ_L1_SDMA: irqchip = &mpc52xx_sdma_irqchip; break;
case MPC52xx_IRQ_L1_CRIT:
- default:
pr_warn("%s: Critical IRQ #%d is unsupported! Nopping it.\n",
- __func__, l1irq);
+ __func__, l2irq);
irq_set_chip(virq, &no_irq_chip);
return 0;
}
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 0f3cdda..fe7546e 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -624,11 +624,6 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc,
* code gets preempted or delayed for some reason.
*/
for (i = 0; i < DRM_TIMESTAMP_MAXRETRIES; i++) {
- /* Disable preemption to make it very likely to
- * succeed in the first iteration even on PREEMPT_RT kernel.
- */
- preempt_disable();
-
/* Get system timestamp before query. */
stime = ktime_get();
@@ -640,8 +635,6 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc,
if (!drm_timestamp_monotonic)
mono_time_offset = ktime_get_monotonic_offset();
- preempt_enable();
-
/* Return as no-op if scanout query unsupported or failed. */
if (!(vbl_status & DRM_SCANOUTPOS_VALID)) {
DRM_DEBUG("crtc %d : scanoutpos query failed [%d].\n",
diff --git a/drivers/misc/hwlat_detector.c b/drivers/misc/hwlat_detector.c
index 6f61d5f..d2676b8 100644
--- a/drivers/misc/hwlat_detector.c
+++ b/drivers/misc/hwlat_detector.c
@@ -413,7 +413,7 @@ static int init_stats(void)
goto out;
__reset_stats();
- data.threshold = DEFAULT_LAT_THRESHOLD; /* threshold us */
+ data.threshold = threshold ?: DEFAULT_LAT_THRESHOLD; /* threshold us */
data.sample_window = DEFAULT_SAMPLE_WINDOW; /* window us */
data.sample_width = DEFAULT_SAMPLE_WIDTH; /* width us */
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index a3cf48e..a569b71 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1044,7 +1044,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
goto out_mput;
}
- sched_setscheduler(t, SCHED_FIFO, ¶m);
+ sched_setscheduler_nocheck(t, SCHED_FIFO, ¶m);
/*
* We keep the reference to the task struct even if
diff --git a/localversion-rt b/localversion-rt
index b2111a2..c5b71f9 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt24
+-rt25
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 6b7ff19..1503ca3 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2283,7 +2283,7 @@ static void drain_all_stock(struct mem_cgroup *root_memcg, bool sync)
/* Notify other cpus that system-wide "drain" is running */
get_online_cpus();
- curcpu = get_cpu();
+ curcpu = get_cpu_light();
for_each_online_cpu(cpu) {
struct memcg_stock_pcp *stock = &per_cpu(memcg_stock, cpu);
struct mem_cgroup *memcg;
@@ -2300,7 +2300,7 @@ static void drain_all_stock(struct mem_cgroup *root_memcg, bool sync)
schedule_work_on(cpu, &stock->work);
}
}
- put_cpu();
+ put_cpu_light();
if (!sync)
goto out;
diff --git a/mm/slub.c b/mm/slub.c
index f6871c5..7c925ae 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1427,13 +1427,13 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
__free_memcg_kmem_pages(page, order);
}
-static void free_delayed(struct kmem_cache *s, struct list_head *h)
+static void free_delayed(struct list_head *h)
{
while(!list_empty(h)) {
struct page *page = list_first_entry(h, struct page, lru);
list_del(&page->lru);
- __free_slab(s, page);
+ __free_slab(page->slab_cache, page);
}
}
@@ -2004,7 +2004,7 @@ static int put_cpu_partial(struct kmem_cache *s, struct page *page, int drain)
list_splice_init(&f->list, &tofree);
raw_spin_unlock(&f->lock);
local_irq_restore(flags);
- free_delayed(s, &tofree);
+ free_delayed(&tofree);
oldpage = NULL;
pobjects = 0;
pages = 0;
@@ -2081,7 +2081,7 @@ static void flush_all(struct kmem_cache *s)
raw_spin_lock_irq(&f->lock);
list_splice_init(&f->list, &tofree);
raw_spin_unlock_irq(&f->lock);
- free_delayed(s, &tofree);
+ free_delayed(&tofree);
}
}
@@ -2329,7 +2329,7 @@ out:
list_splice_init(&f->list, &tofree);
raw_spin_unlock(&f->lock);
local_irq_restore(flags);
- free_delayed(s, &tofree);
+ free_delayed(&tofree);
return freelist;
new_slab:
--
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