* [PATCH RT 0/2] Linux v5.4.143-rt64-rc1
@ 2021-09-02 20:26 zanussi
2021-09-02 20:26 ` [PATCH RT 1/2] locking/rwsem-rt: Remove might_sleep() in __up_read() zanussi
2021-09-02 20:26 ` [PATCH RT 2/2] Linux 5.4.143-rt64-rc1 zanussi
0 siblings, 2 replies; 4+ messages in thread
From: zanussi @ 2021-09-02 20:26 UTC (permalink / raw)
To: LKML, linux-rt-users, Steven Rostedt, Thomas Gleixner,
Carsten Emde, John Kacur, Sebastian Andrzej Siewior,
Daniel Wagner, Clark Williams, Luis Claudio R. Goncalves,
Tom Zanussi
From: Tom Zanussi <zanussi@kernel.org>
Dear RT Folks,
This is the RT stable review cycle of patch 5.4.143-rt64-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 2021-09-07.
To build 5.4.143-rt64-rc1 directly, the following patches should be applied:
https://www.kernel.org/pub/linux/kernel/v5.x/linux-5.4.tar.xz
https://www.kernel.org/pub/linux/kernel/v5.x/patch-5.4.143.xz
https://www.kernel.org/pub/linux/kernel/projects/rt/5.4/patch-5.4.143-rt64-rc1.patch.xz
You can also build from 5.4.143-rt63 by applying the incremental patch:
https://www.kernel.org/pub/linux/kernel/projects/rt/5.4/incr/patch-5.4.143-rt63-rt64-rc1.patch.xz
Enjoy,
-- Tom
Andrew Halaney (1):
locking/rwsem-rt: Remove might_sleep() in __up_read()
Tom Zanussi (1):
Linux 5.4.143-rt64-rc1
kernel/locking/rwsem-rt.c | 1 -
localversion-rt | 2 +-
2 files changed, 1 insertion(+), 2 deletions(-)
--
2.17.1
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH RT 1/2] locking/rwsem-rt: Remove might_sleep() in __up_read()
2021-09-02 20:26 [PATCH RT 0/2] Linux v5.4.143-rt64-rc1 zanussi
@ 2021-09-02 20:26 ` zanussi
2021-09-02 20:26 ` [PATCH RT 2/2] Linux 5.4.143-rt64-rc1 zanussi
1 sibling, 0 replies; 4+ messages in thread
From: zanussi @ 2021-09-02 20:26 UTC (permalink / raw)
To: LKML, linux-rt-users, Steven Rostedt, Thomas Gleixner,
Carsten Emde, John Kacur, Sebastian Andrzej Siewior,
Daniel Wagner, Clark Williams, Luis Claudio R. Goncalves,
Tom Zanussi
Cc: Andrew Halaney
From: Andrew Halaney <ahalaney@redhat.com>
v5.4.143-rt64-rc1 stable review patch.
If anyone has any objections, please let me know.
-----------
[ Upstream commit b2ed0a4302faf2bb09e97529dd274233c082689b ]
There's no chance of sleeping here, the reader is giving up the
lock and possibly waking up the writer who is waiting on it.
Reported-by: Chunyu Hu <chuhu@redhat.com>
Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Tom Zanussi <zanussi@kernel.org>
---
kernel/locking/rwsem-rt.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/kernel/locking/rwsem-rt.c b/kernel/locking/rwsem-rt.c
index 19ea20be3fd7..966946454ced 100644
--- a/kernel/locking/rwsem-rt.c
+++ b/kernel/locking/rwsem-rt.c
@@ -200,7 +200,6 @@ void __up_read(struct rw_semaphore *sem)
if (!atomic_dec_and_test(&sem->readers))
return;
- might_sleep();
raw_spin_lock_irq(&m->wait_lock);
/*
* Wake the writer, i.e. the rtmutex owner. It might release the
--
2.17.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH RT 2/2] Linux 5.4.143-rt64-rc1
2021-09-02 20:26 [PATCH RT 0/2] Linux v5.4.143-rt64-rc1 zanussi
2021-09-02 20:26 ` [PATCH RT 1/2] locking/rwsem-rt: Remove might_sleep() in __up_read() zanussi
@ 2021-09-02 20:26 ` zanussi
1 sibling, 0 replies; 4+ messages in thread
From: zanussi @ 2021-09-02 20:26 UTC (permalink / raw)
To: LKML, linux-rt-users, Steven Rostedt, Thomas Gleixner,
Carsten Emde, John Kacur, Sebastian Andrzej Siewior,
Daniel Wagner, Clark Williams, Luis Claudio R. Goncalves,
Tom Zanussi
From: Tom Zanussi <zanussi@kernel.org>
v5.4.143-rt64-rc1 stable review patch.
If anyone has any objections, please let me know.
-----------
Signed-off-by: Tom Zanussi <zanussi@kernel.org>
---
localversion-rt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/localversion-rt b/localversion-rt
index b0e8dd7bd707..c64934cc5dfa 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt63
+-rt64-rc1
--
2.17.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH RT 0/2] Linux 5.10.59-rt52-rc1
@ 2021-08-20 23:46 Steven Rostedt
2021-08-20 23:46 ` [PATCH RT 1/2] locking/rwsem-rt: Remove might_sleep() in __up_read() Steven Rostedt
0 siblings, 1 reply; 4+ messages in thread
From: Steven Rostedt @ 2021-08-20 23:46 UTC (permalink / raw)
To: linux-kernel, linux-rt-users
Cc: Thomas Gleixner, Carsten Emde, Sebastian Andrzej Siewior,
John Kacur, Daniel Wagner, Tom Zanussi, Srivatsa S. Bhat
Dear RT Folks,
This is the RT stable review cycle of patch 5.10.59-rt52-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 8/24/2021.
Enjoy,
-- Steve
To build 5.10.59-rt52-rc1 directly, the following patches should be applied:
http://www.kernel.org/pub/linux/kernel/v5.x/linux-5.10.tar.xz
http://www.kernel.org/pub/linux/kernel/v5.x/patch-5.10.59.xz
http://www.kernel.org/pub/linux/kernel/projects/rt/5.10/patch-5.10.59-rt52-rc1.patch.xz
You can also build from 5.10.59-rt51 by applying the incremental patch:
http://www.kernel.org/pub/linux/kernel/projects/rt/5.10/incr/patch-5.10.59-rt51-rt52-rc1.patch.xz
Changes from 5.10.59-rt51:
---
Andrew Halaney (1):
locking/rwsem-rt: Remove might_sleep() in __up_read()
Steven Rostedt (VMware) (1):
Linux 5.10.59-rt52-rc1
----
kernel/locking/rwsem-rt.c | 1 -
localversion-rt | 2 +-
2 files changed, 1 insertion(+), 2 deletions(-)
^ permalink raw reply [flat|nested] 4+ messages in thread* [PATCH RT 1/2] locking/rwsem-rt: Remove might_sleep() in __up_read()
2021-08-20 23:46 [PATCH RT 0/2] Linux 5.10.59-rt52-rc1 Steven Rostedt
@ 2021-08-20 23:46 ` Steven Rostedt
0 siblings, 0 replies; 4+ messages in thread
From: Steven Rostedt @ 2021-08-20 23:46 UTC (permalink / raw)
To: linux-kernel, linux-rt-users
Cc: Thomas Gleixner, Carsten Emde, Sebastian Andrzej Siewior,
John Kacur, Daniel Wagner, Tom Zanussi, Srivatsa S. Bhat,
Chunyu Hu, Andrew Halaney
5.10.59-rt52-rc1 stable review patch.
If anyone has any objections, please let me know.
------------------
From: Andrew Halaney <ahalaney@redhat.com>
There's no chance of sleeping here, the reader is giving up the
lock and possibly waking up the writer who is waiting on it.
Reported-by: Chunyu Hu <chuhu@redhat.com>
Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
kernel/locking/rwsem-rt.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/kernel/locking/rwsem-rt.c b/kernel/locking/rwsem-rt.c
index 274172d5bb3a..b61edc4dcb73 100644
--- a/kernel/locking/rwsem-rt.c
+++ b/kernel/locking/rwsem-rt.c
@@ -198,7 +198,6 @@ void __up_read(struct rw_semaphore *sem)
if (!atomic_dec_and_test(&sem->readers))
return;
- might_sleep();
raw_spin_lock_irq(&m->wait_lock);
/*
* Wake the writer, i.e. the rtmutex owner. It might release the
--
2.30.2
^ permalink raw reply related [flat|nested] 4+ messages in thread
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