diff options
Diffstat (limited to 'debian/patches-rt/0192-mm-Allow-only-SLUB-on-RT.patch')
| -rw-r--r-- | debian/patches-rt/0192-mm-Allow-only-SLUB-on-RT.patch | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/debian/patches-rt/0192-mm-Allow-only-SLUB-on-RT.patch b/debian/patches-rt/0192-mm-Allow-only-SLUB-on-RT.patch deleted file mode 100644 index c7fa8f35b..000000000 --- a/debian/patches-rt/0192-mm-Allow-only-SLUB-on-RT.patch +++ /dev/null @@ -1,47 +0,0 @@ -From 9cc1f11b7cb9624b27d4d8dcb35564ae006648d4 Mon Sep 17 00:00:00 2001 -From: Ingo Molnar <mingo@elte.hu> -Date: Fri, 3 Jul 2009 08:44:03 -0500 -Subject: [PATCH 192/296] mm: Allow only SLUB on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.35-rt39.tar.xz - -Memory allocation disables interrupts as part of the allocation and freeing -process. For -RT it is important that this section remain short and don't -depend on the size of the request or an internal state of the memory allocator. -At the beginning the SLAB memory allocator was adopted for RT's needs and it -required substantial changes. Later, with the addition of the SLUB memory -allocator we adopted this one as well and the changes were smaller. More -important, due to the design of the SLUB allocator it performs better and its -worst case latency was smaller. In the end only SLUB remained supported. - -Disable SLAB and SLOB on -RT. Only SLUB is adopted to -RT needs. - -Signed-off-by: Ingo Molnar <mingo@elte.hu> -Signed-off-by: Thomas Gleixner <tglx@linutronix.de> -Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> ---- - init/Kconfig | 2 ++ - 1 file changed, 2 insertions(+) - -diff --git a/init/Kconfig b/init/Kconfig -index fc4c9f416fad..1f6c20e56ea9 100644 ---- a/init/Kconfig -+++ b/init/Kconfig -@@ -1895,6 +1895,7 @@ choice - - config SLAB - bool "SLAB" -+ depends on !PREEMPT_RT - select HAVE_HARDENED_USERCOPY_ALLOCATOR - help - The regular slab allocator that is established and known to work -@@ -1915,6 +1916,7 @@ config SLUB - config SLOB - depends on EXPERT - bool "SLOB (Simple Allocator)" -+ depends on !PREEMPT_RT - help - SLOB replaces the stock allocator with a drastically simpler - allocator. SLOB is generally more space efficient but --- -2.30.2 - |