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-rw-r--r--debian/patches-rt/0052-x86-Use-generic-rwsem_spinlocks-on-rt.patch34
1 files changed, 34 insertions, 0 deletions
diff --git a/debian/patches-rt/0052-x86-Use-generic-rwsem_spinlocks-on-rt.patch b/debian/patches-rt/0052-x86-Use-generic-rwsem_spinlocks-on-rt.patch
new file mode 100644
index 000000000..61295d2a3
--- /dev/null
+++ b/debian/patches-rt/0052-x86-Use-generic-rwsem_spinlocks-on-rt.patch
@@ -0,0 +1,34 @@
+From ba7790a3c551c3de98d561dbdfc21b1ee3da42b7 Mon Sep 17 00:00:00 2001
+From: Thomas Gleixner <tglx@linutronix.de>
+Date: Sun, 26 Jul 2009 02:21:32 +0200
+Subject: [PATCH 052/347] x86: Use generic rwsem_spinlocks on -rt
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz
+
+Simplifies the separation of anon_rw_semaphores and rw_semaphores for
+-rt.
+
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+---
+ arch/x86/Kconfig | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
+index a8ec5d0c024e..6ee7220e7f47 100644
+--- a/arch/x86/Kconfig
++++ b/arch/x86/Kconfig
+@@ -264,8 +264,11 @@ config ARCH_MAY_HAVE_PC_FDC
+ def_bool y
+ depends on ISA_DMA_API
+
++config RWSEM_GENERIC_SPINLOCK
++ def_bool PREEMPT_RT_FULL
++
+ config RWSEM_XCHGADD_ALGORITHM
+- def_bool y
++ def_bool !RWSEM_GENERIC_SPINLOCK && !PREEMPT_RT_FULL
+
+ config GENERIC_CALIBRATE_DELAY
+ def_bool y
+--
+2.36.1
+