[tip: core/core] loongarch: Use generic TIF bits

tip-bot2 for Thomas Gleixner
2025-09-17T06:16:35Z

The following commit has been merged into the core/core branch of tip:

Commit-ID: f9629891d407e455dc1334e1594108c73074fe8b
Gitweb: https://git.kernel.org/tip/f9629891d407e455dc1334e1594108c73074fe8b
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Mon, 08 Sep 2025 23:32:36 +02:00
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Wed, 17 Sep 2025 08:14:04 +02:00

loongarch: 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 loongarch. So no further action required here.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/loongarch/Kconfig | 1 +-
arch/loongarch/include/asm/thread_info.h | 76 ++++++++++-------------
2 files changed, 35 insertions(+), 42 deletions(-)

diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index f0abc38..2e90d86 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -140,6 +140,7 @@ config LOONGARCH
select HAVE_EBPF_JIT
select HAVE_EFFICIENT_UNALIGNED_ACCESS if !ARCH_STRICT_ALIGN
select HAVE_EXIT_THREAD
+ select HAVE_GENERIC_TIF_BITS
select HAVE_GUP_FAST
select HAVE_FTRACE_GRAPH_FUNC
select HAVE_FUNCTION_ARG_ACCESS_API
diff --git a/arch/loongarch/include/asm/thread_info.h b/arch/loongarch/include/asm/thread_info.h
index 9dfa2ef..def7cb1 100644
--- a/arch/loongarch/include/asm/thread_info.h
+++ b/arch/loongarch/include/asm/thread_info.h
@@ -65,50 +65,42 @@ register unsigned long current_stack_pointer __asm__("$sp");
* access
* - pending work-to-be-done flags are in LSW
* - other flags in MSW
+ *
+ * Tell the generic TIF infrastructure which special bits loongarch supports
*/
-#define TIF_NEED_RESCHED 0 /* rescheduling necessary */
-#define TIF_NEED_RESCHED_LAZY 1 /* lazy rescheduling necessary */
-#define TIF_SIGPENDING 2 /* signal pending */
-#define TIF_NOTIFY_RESUME 3 /* callback before returning to user */
-#define TIF_NOTIFY_SIGNAL 4 /* signal notifications exist */
-#define TIF_RESTORE_SIGMASK 5 /* restore signal mask in do_signal() */
-#define TIF_NOHZ 6 /* in adaptive nohz mode */
-#define TIF_UPROBE 7 /* breakpointed or singlestepping */
-#define TIF_USEDFPU 8 /* FPU was used by this task this quantum (SMP) */
-#define TIF_USEDSIMD 9 /* SIMD has been used this quantum */
-#define TIF_MEMDIE 10 /* is terminating due to OOM killer */
-#define TIF_FIXADE 11 /* Fix address errors in software */
-#define TIF_LOGADE 12 /* Log address errors to syslog */
-#define TIF_32BIT_REGS 13 /* 32-bit general purpose registers */
-#define TIF_32BIT_ADDR 14 /* 32-bit address space */
-#define TIF_LOAD_WATCH 15 /* If set, load watch registers */
-#define TIF_SINGLESTEP 16 /* Single Step */
-#define TIF_LSX_CTX_LIVE 17 /* LSX context must be preserved */
-#define TIF_LASX_CTX_LIVE 18 /* LASX context must be preserved */
-#define TIF_USEDLBT 19 /* LBT was used by this task this quantum (SMP) */
-#define TIF_LBT_CTX_LIVE 20 /* LBT context must be preserved */
-#define TIF_PATCH_PENDING 21 /* pending live patching update */
+#define HAVE_TIF_NEED_RESCHED_LAZY
+#define HAVE_TIF_RESTORE_SIGMASK
+
+#include <asm-generic/thread_info_tif.h>
+
+/* Architecture specific bits */
+#define TIF_NOHZ 16 /* in adaptive nohz mode */
+#define TIF_USEDFPU 17 /* FPU was used by this task this quantum (SMP) */
+#define TIF_USEDSIMD 18 /* SIMD has been used this quantum */
+#define TIF_FIXADE 10 /* Fix address errors in software */
+#define TIF_LOGADE 20 /* Log address errors to syslog */
+#define TIF_32BIT_REGS 21 /* 32-bit general purpose registers */
+#define TIF_32BIT_ADDR 22 /* 32-bit address space */
+#define TIF_LOAD_WATCH 23 /* If set, load watch registers */
+#define TIF_SINGLESTEP 24 /* Single Step */
+#define TIF_LSX_CTX_LIVE 25 /* LSX context must be preserved */
+#define TIF_LASX_CTX_LIVE 26 /* LASX context must be preserved */
+#define TIF_USEDLBT 27 /* LBT was used by this task this quantum (SMP) */
+#define TIF_LBT_CTX_LIVE 28 /* LBT context must be preserved */

-#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
-#define _TIF_NEED_RESCHED_LAZY (1<<TIF_NEED_RESCHED_LAZY)
-#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
-#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
-#define _TIF_NOTIFY_SIGNAL (1<<TIF_NOTIFY_SIGNAL)
-#define _TIF_NOHZ (1<<TIF_NOHZ)
-#define _TIF_UPROBE (1<<TIF_UPROBE)
-#define _TIF_USEDFPU (1<<TIF_USEDFPU)
-#define _TIF_USEDSIMD (1<<TIF_USEDSIMD)
-#define _TIF_FIXADE (1<<TIF_FIXADE)
-#define _TIF_LOGADE (1<<TIF_LOGADE)
-#define _TIF_32BIT_REGS (1<<TIF_32BIT_REGS)
-#define _TIF_32BIT_ADDR (1<<TIF_32BIT_ADDR)
-#define _TIF_LOAD_WATCH (1<<TIF_LOAD_WATCH)
-#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
-#define _TIF_LSX_CTX_LIVE (1<<TIF_LSX_CTX_LIVE)
-#define _TIF_LASX_CTX_LIVE (1<<TIF_LASX_CTX_LIVE)
-#define _TIF_USEDLBT (1<<TIF_USEDLBT)
-#define _TIF_LBT_CTX_LIVE (1<<TIF_LBT_CTX_LIVE)
-#define _TIF_PATCH_PENDING (1<<TIF_PATCH_PENDING)
+#define _TIF_NOHZ BIT(TIF_NOHZ)
+#define _TIF_USEDFPU BIT(TIF_USEDFPU)
+#define _TIF_USEDSIMD BIT(TIF_USEDSIMD)
+#define _TIF_FIXADE BIT(TIF_FIXADE)
+#define _TIF_LOGADE BIT(TIF_LOGADE)
+#define _TIF_32BIT_REGS BIT(TIF_32BIT_REGS)
+#define _TIF_32BIT_ADDR BIT(TIF_32BIT_ADDR)
+#define _TIF_LOAD_WATCH BIT(TIF_LOAD_WATCH)
+#define _TIF_SINGLESTEP BIT(TIF_SINGLESTEP)
+#define _TIF_LSX_CTX_LIVE BIT(TIF_LSX_CTX_LIVE)
+#define _TIF_LASX_CTX_LIVE BIT(TIF_LASX_CTX_LIVE)
+#define _TIF_USEDLBT BIT(TIF_USEDLBT)
+#define _TIF_LBT_CTX_LIVE BIT(TIF_LBT_CTX_LIVE)

#endif /* __KERNEL__ */
#endif /* _ASM_THREAD_INFO_H */