VisionFive2 Linux kernel

StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)

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author: He Zhe <zhe.he@windriver.com> 2021-10-12 16:44:21 +0800 committer: Minda Chen <minda.chen@starfivetech.com> 2023-11-06 19:24:52 +0800 commit: 0e1ea45fac0adc430a97b15bddfcc28f6b7d48c7 parent: b00b3ea5c737160dd829077636c0f5554e41ef2e
Commit Summary:
arm64: signal: Use ARCH_RT_DELAYS_SIGNAL_SEND.
Diffstat:
2 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/signal.h b/arch/arm64/include/asm/signal.h
index ef449f5f4ba8..5e535c3e4926 100644
--- a/arch/arm64/include/asm/signal.h
+++ b/arch/arm64/include/asm/signal.h
@@ -22,4 +22,8 @@ static inline void __user *arch_untagged_si_addr(void __user *addr,
 }
 #define arch_untagged_si_addr arch_untagged_si_addr
 
+#if defined(CONFIG_PREEMPT_RT)
+#define ARCH_RT_DELAYS_SIGNAL_SEND
+#endif
+
 #endif
diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
index 8a9194ed981c..1d65f2801e13 100644
--- a/arch/arm64/kernel/signal.c
+++ b/arch/arm64/kernel/signal.c
@@ -928,6 +928,14 @@ void do_notify_resume(struct pt_regs *regs, unsigned long thread_flags)
 		} else {
 			local_daif_restore(DAIF_PROCCTX);
 
+#ifdef ARCH_RT_DELAYS_SIGNAL_SEND
+			if (unlikely(current->forced_info.si_signo)) {
+				struct task_struct *t = current;
+				force_sig_info(&t->forced_info);
+				t->forced_info.si_signo = 0;
+			}
+#endif
+
 			if (thread_flags & _TIF_UPROBE)
 				uprobe_notify_resume(regs);