Adding debian version 4.19.249-2.debian/4.19.249-2debian

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 177 insertions, 0 deletions

diff --git a/debian/patches-rt/0120-softirq-Disable-softirq-stacks-for-RT.patch b/debian/patches-rt/0120-softirq-Disable-softirq-stacks-for-RT.patch
new file mode 100644
index 000000000..3c4ba7e3e
--- /dev/null
+++ b/debian/patches-rt/0120-softirq-Disable-softirq-stacks-for-RT.patch
@@ -0,0 +1,177 @@
+From 7e198889f2947f9bfeecdda6955492f55399a621 Mon Sep 17 00:00:00 2001
+From: Thomas Gleixner <tglx@linutronix.de>
+Date: Mon, 18 Jul 2011 13:59:17 +0200
+Subject: [PATCH 120/347] softirq: Disable softirq stacks for RT
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz
+
+Disable extra stacks for softirqs. We want to preempt softirqs and
+having them on special IRQ-stack does not make this easier.
+
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+---
+ arch/powerpc/kernel/irq.c     | 2 ++
+ arch/powerpc/kernel/misc_32.S | 2 ++
+ arch/powerpc/kernel/misc_64.S | 2 ++
+ arch/sh/kernel/irq.c          | 2 ++
+ arch/sparc/kernel/irq_64.c    | 2 ++
+ arch/x86/entry/entry_64.S     | 2 ++
+ arch/x86/kernel/irq_32.c      | 2 ++
+ include/linux/interrupt.h     | 2 +-
+ 8 files changed, 15 insertions(+), 1 deletion(-)
+
+diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
+index d37704ebccdb..b45a9849b687 100644
+--- a/arch/powerpc/kernel/irq.c
++++ b/arch/powerpc/kernel/irq.c
+@@ -766,6 +766,7 @@ void irq_ctx_init(void)
+ 	}
+ }
+ 
++#ifndef CONFIG_PREEMPT_RT_FULL
+ void do_softirq_own_stack(void)
+ {
+ 	struct thread_info *curtp, *irqtp;
+@@ -783,6 +784,7 @@ void do_softirq_own_stack(void)
+ 	if (irqtp->flags)
+ 		set_bits(irqtp->flags, &curtp->flags);
+ }
++#endif
+ 
+ irq_hw_number_t virq_to_hw(unsigned int virq)
+ {
+diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
+index 695b24a2d954..032ada21b7bd 100644
+--- a/arch/powerpc/kernel/misc_32.S
++++ b/arch/powerpc/kernel/misc_32.S
+@@ -42,6 +42,7 @@
+  * We store the saved ksp_limit in the unused part
+  * of the STACK_FRAME_OVERHEAD
+  */
++#ifndef CONFIG_PREEMPT_RT_FULL
+ _GLOBAL(call_do_softirq)
+ 	mflr	r0
+ 	stw	r0,4(r1)
+@@ -58,6 +59,7 @@ _GLOBAL(call_do_softirq)
+ 	stw	r10,THREAD+KSP_LIMIT(r2)
+ 	mtlr	r0
+ 	blr
++#endif
+ 
+ /*
+  * void call_do_irq(struct pt_regs *regs, struct thread_info *irqtp);
+diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
+index facc02964ab3..8b1774186c68 100644
+--- a/arch/powerpc/kernel/misc_64.S
++++ b/arch/powerpc/kernel/misc_64.S
+@@ -32,6 +32,7 @@
+ 
+ 	.text
+ 
++#ifndef CONFIG_PREEMPT_RT_FULL
+ _GLOBAL(call_do_softirq)
+ 	mflr	r0
+ 	std	r0,16(r1)
+@@ -42,6 +43,7 @@ _GLOBAL(call_do_softirq)
+ 	ld	r0,16(r1)
+ 	mtlr	r0
+ 	blr
++#endif
+ 
+ _GLOBAL(call_do_irq)
+ 	mflr	r0
+diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
+index 5717c7cbdd97..66dd399b2007 100644
+--- a/arch/sh/kernel/irq.c
++++ b/arch/sh/kernel/irq.c
+@@ -148,6 +148,7 @@ void irq_ctx_exit(int cpu)
+ 	hardirq_ctx[cpu] = NULL;
+ }
+ 
++#ifndef CONFIG_PREEMPT_RT_FULL
+ void do_softirq_own_stack(void)
+ {
+ 	struct thread_info *curctx;
+@@ -175,6 +176,7 @@ void do_softirq_own_stack(void)
+ 		  "r5", "r6", "r7", "r8", "r9", "r15", "t", "pr"
+ 	);
+ }
++#endif
+ #else
+ static inline void handle_one_irq(unsigned int irq)
+ {
+diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c
+index 713670e6d13d..5dfc715343f9 100644
+--- a/arch/sparc/kernel/irq_64.c
++++ b/arch/sparc/kernel/irq_64.c
+@@ -854,6 +854,7 @@ void __irq_entry handler_irq(int pil, struct pt_regs *regs)
+ 	set_irq_regs(old_regs);
+ }
+ 
++#ifndef CONFIG_PREEMPT_RT_FULL
+ void do_softirq_own_stack(void)
+ {
+ 	void *orig_sp, *sp = softirq_stack[smp_processor_id()];
+@@ -868,6 +869,7 @@ void do_softirq_own_stack(void)
+ 	__asm__ __volatile__("mov %0, %%sp"
+ 			     : : "r" (orig_sp));
+ }
++#endif
+ 
+ #ifdef CONFIG_HOTPLUG_CPU
+ void fixup_irqs(void)
+diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
+index dfe26f3cfffc..f53d995b1370 100644
+--- a/arch/x86/entry/entry_64.S
++++ b/arch/x86/entry/entry_64.S
+@@ -1084,6 +1084,7 @@ EXPORT_SYMBOL(native_load_gs_index)
+ 	jmp	2b
+ 	.previous
+ 
++#ifndef CONFIG_PREEMPT_RT_FULL
+ /* Call softirq on interrupt stack. Interrupts are off. */
+ ENTRY(do_softirq_own_stack)
+ 	pushq	%rbp
+@@ -1094,6 +1095,7 @@ ENTRY(do_softirq_own_stack)
+ 	leaveq
+ 	ret
+ ENDPROC(do_softirq_own_stack)
++#endif
+ 
+ #ifdef CONFIG_XEN
+ idtentry hypervisor_callback xen_do_hypervisor_callback has_error_code=0
+diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c
+index 95600a99ae93..9192d76085ba 100644
+--- a/arch/x86/kernel/irq_32.c
++++ b/arch/x86/kernel/irq_32.c
+@@ -130,6 +130,7 @@ void irq_ctx_init(int cpu)
+ 	       cpu, per_cpu(hardirq_stack, cpu),  per_cpu(softirq_stack, cpu));
+ }
+ 
++#ifndef CONFIG_PREEMPT_RT_FULL
+ void do_softirq_own_stack(void)
+ {
+ 	struct irq_stack *irqstk;
+@@ -146,6 +147,7 @@ void do_softirq_own_stack(void)
+ 
+ 	call_on_stack(__do_softirq, isp);
+ }
++#endif
+ 
+ bool handle_irq(struct irq_desc *desc, struct pt_regs *regs)
+ {
+diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
+index 35fa335c475b..eec4bec454b5 100644
+--- a/include/linux/interrupt.h
++++ b/include/linux/interrupt.h
+@@ -500,7 +500,7 @@ struct softirq_action
+ asmlinkage void do_softirq(void);
+ asmlinkage void __do_softirq(void);
+ 
+-#ifdef __ARCH_HAS_DO_SOFTIRQ
++#if defined(__ARCH_HAS_DO_SOFTIRQ) && !defined(CONFIG_PREEMPT_RT_FULL)
+ void do_softirq_own_stack(void);
+ #else
+ static inline void do_softirq_own_stack(void)
+-- 
+2.36.1
+