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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:38 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:38 +0000
commit08b74a000942a380fe028845f92cd3a0dee827d5 (patch)
treeaa78b4e12607c3e1fcce8d5cc42df4330792f118 /debian/patches-rt/0081-mm-Enable-SLUB-for-RT.patch
parentAdding upstream version 4.19.249. (diff)
downloadlinux-08b74a000942a380fe028845f92cd3a0dee827d5.tar.xz
linux-08b74a000942a380fe028845f92cd3a0dee827d5.zip
Adding debian version 4.19.249-2.debian/4.19.249-2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'debian/patches-rt/0081-mm-Enable-SLUB-for-RT.patch')
-rw-r--r--debian/patches-rt/0081-mm-Enable-SLUB-for-RT.patch42
1 files changed, 42 insertions, 0 deletions
diff --git a/debian/patches-rt/0081-mm-Enable-SLUB-for-RT.patch b/debian/patches-rt/0081-mm-Enable-SLUB-for-RT.patch
new file mode 100644
index 000000000..4d6e35faa
--- /dev/null
+++ b/debian/patches-rt/0081-mm-Enable-SLUB-for-RT.patch
@@ -0,0 +1,42 @@
+From 24cc0bd393e472cf081687c51f59d2677a0ca367 Mon Sep 17 00:00:00 2001
+From: Thomas Gleixner <tglx@linutronix.de>
+Date: Thu, 25 Oct 2012 10:32:35 +0100
+Subject: [PATCH 081/347] mm: Enable SLUB for RT
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz
+
+Avoid the memory allocation in IRQ section
+
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+[bigeasy: factor out everything except the kcalloc() workaorund ]
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ mm/slub.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/mm/slub.c b/mm/slub.c
+index a5a086ed4493..959ccf873292 100644
+--- a/mm/slub.c
++++ b/mm/slub.c
+@@ -3734,6 +3734,11 @@ static void list_slab_objects(struct kmem_cache *s, struct page *page,
+ const char *text)
+ {
+ #ifdef CONFIG_SLUB_DEBUG
++#ifdef CONFIG_PREEMPT_RT_BASE
++ /* XXX move out of irq-off section */
++ slab_err(s, page, text, s->name);
++#else
++
+ void *addr = page_address(page);
+ void *p;
+ unsigned long *map = kcalloc(BITS_TO_LONGS(page->objects),
+@@ -3755,6 +3760,7 @@ static void list_slab_objects(struct kmem_cache *s, struct page *page,
+ slab_unlock(page);
+ kfree(map);
+ #endif
++#endif
+ }
+
+ /*
+--
+2.36.1
+