diff options
Diffstat (limited to 'debian/patches-rt/arm-preempt-lazy-support.patch')
| -rw-r--r-- | debian/patches-rt/arm-preempt-lazy-support.patch | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/debian/patches-rt/arm-preempt-lazy-support.patch b/debian/patches-rt/arm-preempt-lazy-support.patch index 6cf830683..3ecbcf0f3 100644 --- a/debian/patches-rt/arm-preempt-lazy-support.patch +++ b/debian/patches-rt/arm-preempt-lazy-support.patch @@ -1,7 +1,7 @@ Subject: arm: Add support for lazy preemption From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 31 Oct 2012 12:04:11 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.0/older/patches-5.0.10-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz Implement the arm pieces for lazy preempt. @@ -17,7 +17,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig -@@ -90,6 +90,7 @@ config ARM +@@ -94,6 +94,7 @@ config ARM select HAVE_PERF_EVENTS select HAVE_PERF_REGS select HAVE_PERF_USER_STACK_DUMP @@ -27,7 +27,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> select HAVE_RSEQ --- a/arch/arm/include/asm/thread_info.h +++ b/arch/arm/include/asm/thread_info.h -@@ -49,6 +49,7 @@ struct cpu_context_save { +@@ -46,6 +46,7 @@ struct cpu_context_save { struct thread_info { unsigned long flags; /* low level flags */ int preempt_count; /* 0 => preemptable, <0 => bug */ @@ -35,7 +35,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> mm_segment_t addr_limit; /* address limit */ struct task_struct *task; /* main task structure */ __u32 cpu; /* cpu */ -@@ -142,7 +143,8 @@ extern int vfp_restore_user_hwstate(stru +@@ -139,7 +140,8 @@ extern int vfp_restore_user_hwstate(stru #define TIF_SYSCALL_TRACE 4 /* syscall trace active */ #define TIF_SYSCALL_AUDIT 5 /* syscall auditing active */ #define TIF_SYSCALL_TRACEPOINT 6 /* syscall tracepoint instrumentation */ @@ -45,7 +45,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> #define TIF_NOHZ 12 /* in adaptive nohz mode */ #define TIF_USING_IWMMXT 17 -@@ -152,6 +154,7 @@ extern int vfp_restore_user_hwstate(stru +@@ -149,6 +151,7 @@ extern int vfp_restore_user_hwstate(stru #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) @@ -53,7 +53,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> #define _TIF_UPROBE (1 << TIF_UPROBE) #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) -@@ -167,7 +170,8 @@ extern int vfp_restore_user_hwstate(stru +@@ -164,7 +167,8 @@ extern int vfp_restore_user_hwstate(stru * Change these and you break ASM code in entry-common.S */ #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \ @@ -65,7 +65,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> #endif /* __ASM_ARM_THREAD_INFO_H */ --- a/arch/arm/kernel/asm-offsets.c +++ b/arch/arm/kernel/asm-offsets.c -@@ -56,6 +56,7 @@ int main(void) +@@ -53,6 +53,7 @@ int main(void) BLANK(); DEFINE(TI_FLAGS, offsetof(struct thread_info, flags)); DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count)); @@ -75,7 +75,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> DEFINE(TI_CPU, offsetof(struct thread_info, cpu)); --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S -@@ -216,11 +216,18 @@ ENDPROC(__dabt_svc) +@@ -213,11 +213,18 @@ ENDPROC(__dabt_svc) #ifdef CONFIG_PREEMPT ldr r8, [tsk, #TI_PREEMPT] @ get preempt count @@ -96,7 +96,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> #endif svc_exit r5, irq = 1 @ return from exception -@@ -235,8 +242,14 @@ ENDPROC(__irq_svc) +@@ -232,8 +239,14 @@ ENDPROC(__irq_svc) 1: bl preempt_schedule_irq @ irq en/disable is done inside ldr r0, [tsk, #TI_FLAGS] @ get new tasks TI_FLAGS tst r0, #_TIF_NEED_RESCHED @@ -114,7 +114,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> __und_fault: --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S -@@ -56,7 +56,9 @@ saved_pc .req lr +@@ -53,7 +53,9 @@ saved_pc .req lr cmp r2, #TASK_SIZE blne addr_limit_check_failed ldr r1, [tsk, #TI_FLAGS] @ re-check for syscall tracing @@ -125,7 +125,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> bne fast_work_pending -@@ -93,8 +95,11 @@ ENDPROC(ret_fast_syscall) +@@ -90,8 +92,11 @@ ENDPROC(ret_fast_syscall) cmp r2, #TASK_SIZE blne addr_limit_check_failed ldr r1, [tsk, #TI_FLAGS] @ re-check for syscall tracing @@ -140,7 +140,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- a/arch/arm/kernel/signal.c +++ b/arch/arm/kernel/signal.c -@@ -652,7 +652,8 @@ do_work_pending(struct pt_regs *regs, un +@@ -648,7 +648,8 @@ do_work_pending(struct pt_regs *regs, un */ trace_hardirqs_off(); do { |