diff options
Diffstat (limited to 'debian/patches-rt/0223-softirq-Disable-softirq-stacks-for-RT.patch')
| -rw-r--r-- | debian/patches-rt/0223-softirq-Disable-softirq-stacks-for-RT.patch | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/debian/patches-rt/0223-softirq-Disable-softirq-stacks-for-RT.patch b/debian/patches-rt/0223-softirq-Disable-softirq-stacks-for-RT.patch deleted file mode 100644 index 78df4b73e..000000000 --- a/debian/patches-rt/0223-softirq-Disable-softirq-stacks-for-RT.patch +++ /dev/null @@ -1,168 +0,0 @@ -From 32619a9db436ba2bd525bab289356a2c85668c7e Mon Sep 17 00:00:00 2001 -From: Thomas Gleixner <tglx@linutronix.de> -Date: Mon, 18 Jul 2011 13:59:17 +0200 -Subject: [PATCH 223/296] softirq: Disable softirq stacks for RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.35-rt39.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/kernel/irq_32.c | 2 ++ - arch/x86/kernel/irq_64.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 e8a548447dd6..5ad4f27cba10 100644 ---- a/arch/powerpc/kernel/irq.c -+++ b/arch/powerpc/kernel/irq.c -@@ -753,10 +753,12 @@ void *mcheckirq_ctx[NR_CPUS] __read_mostly; - void *softirq_ctx[NR_CPUS] __read_mostly; - void *hardirq_ctx[NR_CPUS] __read_mostly; - -+#ifndef CONFIG_PREEMPT_RT - void do_softirq_own_stack(void) - { - call_do_softirq(softirq_ctx[smp_processor_id()]); - } -+#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 717e658b90fd..08ee95ad6593 100644 ---- a/arch/powerpc/kernel/misc_32.S -+++ b/arch/powerpc/kernel/misc_32.S -@@ -31,6 +31,7 @@ - * We store the saved ksp_limit in the unused part - * of the STACK_FRAME_OVERHEAD - */ -+#ifndef CONFIG_PREEMPT_RT - _GLOBAL(call_do_softirq) - mflr r0 - stw r0,4(r1) -@@ -46,6 +47,7 @@ _GLOBAL(call_do_softirq) - stw r10,THREAD+KSP_LIMIT(r2) - mtlr r0 - blr -+#endif - - /* - * void call_do_irq(struct pt_regs *regs, void *sp); -diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S -index 070465825c21..a6b33f7b3264 100644 ---- a/arch/powerpc/kernel/misc_64.S -+++ b/arch/powerpc/kernel/misc_64.S -@@ -27,6 +27,7 @@ - - .text - -+#ifndef CONFIG_PREEMPT_RT - _GLOBAL(call_do_softirq) - mflr r0 - std r0,16(r1) -@@ -37,6 +38,7 @@ _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 ab5f790b0cd2..5db7af565dec 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 - 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 3ec9f1402aad..eb21682abfcb 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 - 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/kernel/irq_32.c b/arch/x86/kernel/irq_32.c -index 0b79efc87be5..93c6b88b382a 100644 ---- a/arch/x86/kernel/irq_32.c -+++ b/arch/x86/kernel/irq_32.c -@@ -131,6 +131,7 @@ int irq_init_percpu_irqstack(unsigned int cpu) - return 0; - } - -+#ifndef CONFIG_PREEMPT_RT - void do_softirq_own_stack(void) - { - struct irq_stack *irqstk; -@@ -147,6 +148,7 @@ void do_softirq_own_stack(void) - - call_on_stack(__do_softirq, isp); - } -+#endif - - void __handle_irq(struct irq_desc *desc, struct pt_regs *regs) - { -diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c -index 440eed558558..7cfc4e6b7c94 100644 ---- a/arch/x86/kernel/irq_64.c -+++ b/arch/x86/kernel/irq_64.c -@@ -72,7 +72,9 @@ int irq_init_percpu_irqstack(unsigned int cpu) - return map_irq_stack(cpu); - } - -+#ifndef CONFIG_PREEMPT_RT - void do_softirq_own_stack(void) - { - run_on_irqstack_cond(__do_softirq, NULL); - } -+#endif -diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h -index e58f9b0650d3..7545a2f18560 100644 ---- a/include/linux/interrupt.h -+++ b/include/linux/interrupt.h -@@ -560,7 +560,7 @@ 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) - void do_softirq_own_stack(void); - #else - static inline void do_softirq_own_stack(void) --- -2.30.2 - |