[ANNOUNCE] 3.2.23-rt37
Dear RT Folks,
I'm pleased to announce the 3.2.23-rt37 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
Head SHA1: 32a32ba43387e6ad9dd74f38b79ad411c6c1c4e6
Or to build 3.2.23-rt37 directly, the following patches should be applied:
http://www.kernel.org/pub/linux/kernel/v3.x/linux-3.2.tar.xz
http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.23.xz
http://www.kernel.org/pub/linux/kernel/projects/rt/3.2/patch-3.2.23-rt37.patch.xz
You can also build from 3.2.23-rt36 by applying the incremental patch:
http://www.kernel.org/pub/linux/kernel/projects/rt/3.2/incr/patch-3.2.23-rt36-rt37.patch.xz
Enjoy,
-- Steve
Changes from 3.2.23-rt36:
---
Steven Rostedt (5):
cpu/rt: Rework cpu down for PREEMPT_RT
cpu/rt: Fix cpu_hotplug variable initialization
workqueue: Revert workqueue: Fix PF_THREAD_BOUND abuse
workqueue: Revert workqueue: Fix cpuhotplug trainwreck
Linux 3.2.23-rt37
include/linux/cpu.h |6 +-
include/linux/sched.h |7 +
include/linux/workqueue.h |5 +-
kernel/cpu.c | 240 +++
kernel/sched.c| 82 ++-
kernel/workqueue.c| 578 -
localversion-rt |2 +-
7 files changed, 704 insertions(+), 216 deletions(-)
---
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 72e90bb..c46ec3e 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -66,10 +66,8 @@ enum {
/* migration should happen before other stuff but after perf */
CPU_PRI_PERF= 20,
CPU_PRI_MIGRATION = 10,
-
- CPU_PRI_WORKQUEUE_ACTIVE= 5, /* prepare workqueues for others
*/
- CPU_PRI_NORMAL = 0,
- CPU_PRI_WORKQUEUE_INACTIVE = -5, /* flush workqueues after others
*/
+ /* prepare workqueues for other notifiers */
+ CPU_PRI_WORKQUEUE = 5,
};
#define CPU_ONLINE 0x0002 /* CPU (unsigned)v is up */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 0174e3a..9ca3172 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1933,6 +1933,10 @@ extern void do_set_cpus_allowed(struct task_struct *p,
extern int set_cpus_allowed_ptr(struct task_struct *p,
const struct cpumask *new_mask);
+int migrate_me(void);
+void tell_sched_cpu_down_begin(int cpu);
+void tell_sched_cpu_down_done(int cpu);
+
#else
static inline void do_set_cpus_allowed(struct task_struct *p,
const struct cpumask *new_mask)
@@ -1945,6 +1949,9 @@ static inline int set_cpus_allowed_ptr(struct task_struct
*p,
return -EINVAL;
return 0;
}
+static inline int migrate_me(void) { return 0; }
+static inline void tell_sched_cpu_down_begin(int cpu) { }
+static inline void tell_sched_cpu_down_done(int cpu) { }
#endif
#ifndef CONFIG_CPUMASK_OFFSTACK
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 3d8ac9d..e228ca9 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -254,10 +254,9 @@ enum {
WQ_MEM_RECLAIM = 1 << 3, /* may be used for memory reclaim */
WQ_HIGHPRI = 1 << 4, /* high priority */
WQ_CPU_INTENSIVE= 1 << 5, /* cpu instensive workqueue */
- WQ_NON_AFFINE = 1 << 6, /* free to move works around cpus */
- WQ_DRAINING = 1 << 7, /* internal: workqueue is draining */
- WQ_RESCUER = 1 << 8, /* internal: workqueue has rescuer */
+ WQ_DRAINING = 1 << 6, /* internal: workqueue is draining */
+ WQ_RESCUER = 1 << 7, /* internal: workqueue has rescuer */
WQ_MAX_ACTIVE = 512,/* I like 512, better ideas? */
WQ_MAX_UNBOUND_PER_CPU = 4, /* 4 * #cpus for unbound wq */
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 66dfb74..8f87b72 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -46,12 +46,7 @@ static int cpu_hotplug_disabled;
static struct {
struct task_struct *active_writer;
-#ifdef CONFIG_PREEMPT_RT_FULL
- /* Makes the lock keep the task's state */
- spinlock_t lock;
-#else
struct mutex lock; /* Synchronizes accesses to refcount, */
-#endif
/*
* Also blocks the new readers during
* an ongoing cpu hotplug operation.
@@ -59,28 +54,46 @@ static struct {
int refcount;
} cpu_hotplug = {
.active_writer = NULL,
-#ifdef CONFIG_PREEMPT_RT_FULL
- .lock = __SPIN_LOCK_UNLOCKED(cpu_hotplug.lock),
-#else
.lock = __MUTEX_INITIALIZER(cpu_hotplug.lock),
-#endif
.refcount = 0,
};
-#ifdef CONFIG_PREEMPT_RT_FULL
-# define hotplug_lock() rt_spin_lock(_hotplug.lock)
-# define hotplug_unlock() rt_spin_unlock(_hotplug.lock)
-#else
-# define
[ANNOUNCE] 3.2.23-rt37
Dear RT Folks,
I'm pleased to announce the 3.2.23-rt37 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
Head SHA1: 32a32ba43387e6ad9dd74f38b79ad411c6c1c4e6
Or to build 3.2.23-rt37 directly, the following patches should be applied:
http://www.kernel.org/pub/linux/kernel/v3.x/linux-3.2.tar.xz
http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.23.xz
http://www.kernel.org/pub/linux/kernel/projects/rt/3.2/patch-3.2.23-rt37.patch.xz
You can also build from 3.2.23-rt36 by applying the incremental patch:
http://www.kernel.org/pub/linux/kernel/projects/rt/3.2/incr/patch-3.2.23-rt36-rt37.patch.xz
Enjoy,
-- Steve
Changes from 3.2.23-rt36:
---
Steven Rostedt (5):
cpu/rt: Rework cpu down for PREEMPT_RT
cpu/rt: Fix cpu_hotplug variable initialization
workqueue: Revert workqueue: Fix PF_THREAD_BOUND abuse
workqueue: Revert workqueue: Fix cpuhotplug trainwreck
Linux 3.2.23-rt37
include/linux/cpu.h |6 +-
include/linux/sched.h |7 +
include/linux/workqueue.h |5 +-
kernel/cpu.c | 240 +++
kernel/sched.c| 82 ++-
kernel/workqueue.c| 578 -
localversion-rt |2 +-
7 files changed, 704 insertions(+), 216 deletions(-)
---
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 72e90bb..c46ec3e 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -66,10 +66,8 @@ enum {
/* migration should happen before other stuff but after perf */
CPU_PRI_PERF= 20,
CPU_PRI_MIGRATION = 10,
-
- CPU_PRI_WORKQUEUE_ACTIVE= 5, /* prepare workqueues for others
*/
- CPU_PRI_NORMAL = 0,
- CPU_PRI_WORKQUEUE_INACTIVE = -5, /* flush workqueues after others
*/
+ /* prepare workqueues for other notifiers */
+ CPU_PRI_WORKQUEUE = 5,
};
#define CPU_ONLINE 0x0002 /* CPU (unsigned)v is up */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 0174e3a..9ca3172 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1933,6 +1933,10 @@ extern void do_set_cpus_allowed(struct task_struct *p,
extern int set_cpus_allowed_ptr(struct task_struct *p,
const struct cpumask *new_mask);
+int migrate_me(void);
+void tell_sched_cpu_down_begin(int cpu);
+void tell_sched_cpu_down_done(int cpu);
+
#else
static inline void do_set_cpus_allowed(struct task_struct *p,
const struct cpumask *new_mask)
@@ -1945,6 +1949,9 @@ static inline int set_cpus_allowed_ptr(struct task_struct
*p,
return -EINVAL;
return 0;
}
+static inline int migrate_me(void) { return 0; }
+static inline void tell_sched_cpu_down_begin(int cpu) { }
+static inline void tell_sched_cpu_down_done(int cpu) { }
#endif
#ifndef CONFIG_CPUMASK_OFFSTACK
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 3d8ac9d..e228ca9 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -254,10 +254,9 @@ enum {
WQ_MEM_RECLAIM = 1 3, /* may be used for memory reclaim */
WQ_HIGHPRI = 1 4, /* high priority */
WQ_CPU_INTENSIVE= 1 5, /* cpu instensive workqueue */
- WQ_NON_AFFINE = 1 6, /* free to move works around cpus */
- WQ_DRAINING = 1 7, /* internal: workqueue is draining */
- WQ_RESCUER = 1 8, /* internal: workqueue has rescuer */
+ WQ_DRAINING = 1 6, /* internal: workqueue is draining */
+ WQ_RESCUER = 1 7, /* internal: workqueue has rescuer */
WQ_MAX_ACTIVE = 512,/* I like 512, better ideas? */
WQ_MAX_UNBOUND_PER_CPU = 4, /* 4 * #cpus for unbound wq */
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 66dfb74..8f87b72 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -46,12 +46,7 @@ static int cpu_hotplug_disabled;
static struct {
struct task_struct *active_writer;
-#ifdef CONFIG_PREEMPT_RT_FULL
- /* Makes the lock keep the task's state */
- spinlock_t lock;
-#else
struct mutex lock; /* Synchronizes accesses to refcount, */
-#endif
/*
* Also blocks the new readers during
* an ongoing cpu hotplug operation.
@@ -59,28 +54,46 @@ static struct {
int refcount;
} cpu_hotplug = {
.active_writer = NULL,
-#ifdef CONFIG_PREEMPT_RT_FULL
- .lock = __SPIN_LOCK_UNLOCKED(cpu_hotplug.lock),
-#else
.lock = __MUTEX_INITIALIZER(cpu_hotplug.lock),
-#endif
.refcount = 0,
};
-#ifdef CONFIG_PREEMPT_RT_FULL
-# define hotplug_lock() rt_spin_lock(cpu_hotplug.lock)
-# define hotplug_unlock() rt_spin_unlock(cpu_hotplug.lock)
-#else
-# define hotplug_lock()
[PATCH RT 0/5] [ANNOUNCE] 3.2.23-rt37-rc1 stable review
Dear RT Folks, This is the RT stable review cycle of patch 3.2.23-rt37-rc1. Please scream at me if I messed something up. Please test the patches too. The -rc release will be uploaded to kernel.org and will be deleted when the final release is out. This is just a review release (or release candidate). The pre-releases will not be pushed to the git repository, only the final release is. If all goes well, this patch will be converted to the next main release on 7/19/2012. Enjoy, -- Steve To build 3.2.23-rt37-rc1 directly, the following patches should be applied: http://www.kernel.org/pub/linux/kernel/v3.x/linux-3.2.tar.xz http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.23.xz http://www.kernel.org/pub/linux/kernel/projects/rt/3.2/patch-3.2.23-rt37-rc1.patch.xz You can also build from 3.2.23-rt36 by applying the incremental patch: http://www.kernel.org/pub/linux/kernel/projects/rt/3.2/incr/patch-3.2.23-rt36-rt37-rc1.patch.xz Changes from 3.2.23-rt36: --- Steven Rostedt (5): cpu/rt: Rework cpu down for PREEMPT_RT cpu/rt: Fix cpu_hotplug variable initialization workqueue: Revert workqueue: Fix PF_THREAD_BOUND abuse workqueue: Revert workqueue: Fix cpuhotplug trainwreck Linux 3.2.23-rt37-rc1 include/linux/cpu.h |6 +- include/linux/sched.h |7 + include/linux/workqueue.h |5 +- kernel/cpu.c | 240 +++ kernel/sched.c| 82 ++- kernel/workqueue.c| 578 - localversion-rt |2 +- 7 files changed, 704 insertions(+), 216 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH RT 0/5] [ANNOUNCE] 3.2.23-rt37-rc1 stable review
Dear RT Folks, This is the RT stable review cycle of patch 3.2.23-rt37-rc1. Please scream at me if I messed something up. Please test the patches too. The -rc release will be uploaded to kernel.org and will be deleted when the final release is out. This is just a review release (or release candidate). The pre-releases will not be pushed to the git repository, only the final release is. If all goes well, this patch will be converted to the next main release on 7/19/2012. Enjoy, -- Steve To build 3.2.23-rt37-rc1 directly, the following patches should be applied: http://www.kernel.org/pub/linux/kernel/v3.x/linux-3.2.tar.xz http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.23.xz http://www.kernel.org/pub/linux/kernel/projects/rt/3.2/patch-3.2.23-rt37-rc1.patch.xz You can also build from 3.2.23-rt36 by applying the incremental patch: http://www.kernel.org/pub/linux/kernel/projects/rt/3.2/incr/patch-3.2.23-rt36-rt37-rc1.patch.xz Changes from 3.2.23-rt36: --- Steven Rostedt (5): cpu/rt: Rework cpu down for PREEMPT_RT cpu/rt: Fix cpu_hotplug variable initialization workqueue: Revert workqueue: Fix PF_THREAD_BOUND abuse workqueue: Revert workqueue: Fix cpuhotplug trainwreck Linux 3.2.23-rt37-rc1 include/linux/cpu.h |6 +- include/linux/sched.h |7 + include/linux/workqueue.h |5 +- kernel/cpu.c | 240 +++ kernel/sched.c| 82 ++- kernel/workqueue.c| 578 - localversion-rt |2 +- 7 files changed, 704 insertions(+), 216 deletions(-) -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
