From: Tom Zanussi <[email protected]>
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
From: Tom Zanussi <[email protected]>
v5.4.143-rt64-rc1 stable review patch.
If anyone has any objections, please let me know.
-----------
Signed-off-by: Tom Zanussi <[email protected]>
---
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
From: Andrew Halaney <[email protected]>
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 <[email protected]>
Signed-off-by: Andrew Halaney <[email protected]>
Signed-off-by: Steven Rostedt (VMware) <[email protected]>
Signed-off-by: Tom Zanussi <[email protected]>
---
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