From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 8 Sep 2025 21:32:38 +0000 (+0200)
Subject: riscv: Use generic TIF bits
X-Git-Tag: v6.18-rc1~184^2~1
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=41e871f2b63edaf8da20907d512cd5d91ba51476;p=thirdparty%2Fkernel%2Flinux.git

riscv: Use generic TIF bits

No point in defining generic items and the upcoming RSEQ optimizations are
only available with this _and_ the generic entry infrastructure, which is
already used by RISCV. So no further action required here.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 51dcd8eaa2435..0c280614a2847 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -161,6 +161,7 @@ config RISCV
 	select HAVE_FUNCTION_GRAPH_FREGS
 	select HAVE_FUNCTION_TRACER if !XIP_KERNEL && HAVE_DYNAMIC_FTRACE
 	select HAVE_EBPF_JIT if MMU
+	select HAVE_GENERIC_TIF_BITS
 	select HAVE_GUP_FAST if MMU
 	select HAVE_FUNCTION_ARG_ACCESS_API
 	select HAVE_FUNCTION_ERROR_INJECTION
diff --git a/arch/riscv/include/asm/thread_info.h b/arch/riscv/include/asm/thread_info.h
index f5916a70879a8..a315b0261b9d7 100644
--- a/arch/riscv/include/asm/thread_info.h
+++ b/arch/riscv/include/asm/thread_info.h
@@ -107,23 +107,18 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
  * - pending work-to-be-done flags are in lowest half-word
  * - other flags in upper half-word(s)
  */
-#define TIF_NEED_RESCHED	0	/* rescheduling necessary */
-#define TIF_NEED_RESCHED_LAZY	1       /* Lazy rescheduling needed */
-#define TIF_NOTIFY_RESUME	2	/* callback before returning to user */
-#define TIF_SIGPENDING		3	/* signal pending */
-#define TIF_RESTORE_SIGMASK	4	/* restore signal mask in do_signal() */
-#define TIF_MEMDIE		5	/* is terminating due to OOM killer */
-#define TIF_NOTIFY_SIGNAL	9	/* signal notifications exist */
-#define TIF_UPROBE		10	/* uprobe breakpoint or singlestep */
-#define TIF_32BIT		11	/* compat-mode 32bit process */
-#define TIF_RISCV_V_DEFER_RESTORE	12 /* restore Vector before returing to user */
-
-#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
-#define _TIF_NEED_RESCHED_LAZY	(1 << TIF_NEED_RESCHED_LAZY)
-#define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
-#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
-#define _TIF_NOTIFY_SIGNAL	(1 << TIF_NOTIFY_SIGNAL)
-#define _TIF_UPROBE		(1 << TIF_UPROBE)
-#define _TIF_RISCV_V_DEFER_RESTORE	(1 << TIF_RISCV_V_DEFER_RESTORE)
+
+/*
+ * Tell the generic TIF infrastructure which bits riscv supports
+ */
+#define HAVE_TIF_NEED_RESCHED_LAZY
+#define HAVE_TIF_RESTORE_SIGMASK
+
+#include <asm-generic/thread_info_tif.h>
+
+#define TIF_32BIT			16	/* compat-mode 32bit process */
+#define TIF_RISCV_V_DEFER_RESTORE	17	/* restore Vector before returing to user */
+
+#define _TIF_RISCV_V_DEFER_RESTORE	BIT(TIF_RISCV_V_DEFER_RESTORE)
 
 #endif /* _ASM_RISCV_THREAD_INFO_H */