* [PATCH RT 0/2] Linux v5.4.109-rt56-rc1
@ 2021-04-07 18:48 zanussi
2021-04-07 18:48 ` [PATCH RT 1/2] mm: slub: Don't resize the location tracking cache on PREEMPT_RT zanussi
2021-04-07 18:48 ` [PATCH RT 2/2] Linux 5.4.109-rt56-rc1 zanussi
0 siblings, 2 replies; 3+ messages in thread
From: zanussi @ 2021-04-07 18:48 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 5.4.109-rt56-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 2021-04-12.
To build 5.4.109-rt56-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-5.4.109.xz
https://www.kernel.org/pub/linux/kernel/projects/rt/5.4/patch-5.4.109-rt56-rc1.patch.xz
You can also build from 5.4.109-rt55 by applying the incremental patch:
https://www.kernel.org/pub/linux/kernel/projects/rt/5.4/incr/patch-5.4.109-rt55-rt56-rc1.patch.xz
Enjoy,
-- Tom
Sebastian Andrzej Siewior (1):
mm: slub: Don't resize the location tracking cache on PREEMPT_RT
Tom Zanussi (1):
Linux 5.4.109-rt56-rc1
localversion-rt | 2 +-
mm/slub.c | 3 +++
2 files changed, 4 insertions(+), 1 deletion(-)
--
2.17.1
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH RT 1/2] mm: slub: Don't resize the location tracking cache on PREEMPT_RT
2021-04-07 18:48 [PATCH RT 0/2] Linux v5.4.109-rt56-rc1 zanussi
@ 2021-04-07 18:48 ` zanussi
2021-04-07 18:48 ` [PATCH RT 2/2] Linux 5.4.109-rt56-rc1 zanussi
1 sibling, 0 replies; 3+ messages in thread
From: zanussi @ 2021-04-07 18:48 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: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
v5.4.109-rt56-rc1 stable review patch.
If anyone has any objections, please let me know.
-----------
[ Upstream commit 87bd0bf324f4c5468ea3d1de0482589f491f3145 ]
The location tracking cache has a size of a page and is resized if its
current size is too small.
This allocation happens with disabled interrupts and can't happen on
PREEMPT_RT.
Should one page be too small, then we have to allocate more at the
beginning. The only downside is that less callers will be visible.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Tom Zanussi <zanussi@kernel.org>
---
mm/slub.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/mm/slub.c b/mm/slub.c
index 1815e28852fe..0d78368d149a 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -4647,6 +4647,9 @@ static int alloc_loc_track(struct loc_track *t, unsigned long max, gfp_t flags)
struct location *l;
int order;
+ if (IS_ENABLED(CONFIG_PREEMPT_RT) && flags == GFP_ATOMIC)
+ return 0;
+
order = get_order(sizeof(struct location) * max);
l = (void *)__get_free_pages(flags, order);
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH RT 2/2] Linux 5.4.109-rt56-rc1
2021-04-07 18:48 [PATCH RT 0/2] Linux v5.4.109-rt56-rc1 zanussi
2021-04-07 18:48 ` [PATCH RT 1/2] mm: slub: Don't resize the location tracking cache on PREEMPT_RT zanussi
@ 2021-04-07 18:48 ` zanussi
1 sibling, 0 replies; 3+ messages in thread
From: zanussi @ 2021-04-07 18:48 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>
v5.4.109-rt56-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 51b05e9abe6f..a6adf38a57d4 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt55
+-rt56-rc1
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-04-07 18:48 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2021-04-07 18:48 ` [PATCH RT 2/2] Linux 5.4.109-rt56-rc1 zanussi
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