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[-next,v5,21/22] entry: Add has_syscall_work() helepr

Message ID 20241206101744.4161990-22-ruanjinjie@huawei.com (mailing list archive)
State New
Headers show
Series arm64: entry: Convert to generic entry | expand

Commit Message

Jinjie Ruan Dec. 6, 2024, 10:17 a.m. UTC 
Add has_syscall_work() heleper and use it in entry.h. The benefits of
doing so lie in the fact that it can be used in the architecture code
that uses generic entry.

No functional changes.

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
---
 include/linux/entry-common.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
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Patch

diff --git a/include/linux/entry-common.h b/include/linux/entry-common.h
index d11bdb4679b3..3bb5d7d839f4 100644
--- a/include/linux/entry-common.h
+++ b/include/linux/entry-common.h
@@ -43,6 +43,11 @@ 
 				 SYSCALL_WORK_SYSCALL_EXIT_TRAP	|	\
 				 ARCH_SYSCALL_WORK_EXIT)
 
+static inline bool has_syscall_work(unsigned long work)
+{
+	return unlikely(work & SYSCALL_WORK_ENTER);
+}
+
 /**
  * syscall_enter_from_user_mode_prepare - Establish state and enable interrupts
  * @regs:	Pointer to currents pt_regs
@@ -90,7 +95,7 @@  static __always_inline long syscall_enter_from_user_mode_work(struct pt_regs *re
 {
 	unsigned long work = READ_ONCE(current_thread_info()->syscall_work);
 
-	if (work & SYSCALL_WORK_ENTER)
+	if (has_syscall_work(work))
 		syscall = syscall_trace_enter(regs, syscall, work);
 
 	return syscall;