[PATCH v11 01/14] entry: Remove unused syscall in syscall_trace_enter()

[Jinjie Ruan]

The 'syscall' argument in syscall_trace_enter() is immediately overwritten
before any real use and serves only as a local variable, so drop
the parameter.

No functional change intended.

Signed-off-by: Jinjie Ruan <ruanjinjie at huawei.com>
---
 include/linux/entry-common.h  | 4 ++--
 kernel/entry/syscall-common.c | 5 ++---
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/include/linux/entry-common.h b/include/linux/entry-common.h
index 87efb38b7081..e4a8287af822 100644
--- a/include/linux/entry-common.h
+++ b/include/linux/entry-common.h
@@ -45,7 +45,7 @@
 				 SYSCALL_WORK_SYSCALL_EXIT_TRAP	|	\
 				 ARCH_SYSCALL_WORK_EXIT)
 
-long syscall_trace_enter(struct pt_regs *regs, long syscall, unsigned long work);
+long syscall_trace_enter(struct pt_regs *regs, unsigned long work);
 
 /**
  * syscall_enter_from_user_mode_work - Check and handle work before invoking
@@ -75,7 +75,7 @@ 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)
-		syscall = syscall_trace_enter(regs, syscall, work);
+		syscall = syscall_trace_enter(regs, work);
 
 	return syscall;
 }
diff --git a/kernel/entry/syscall-common.c b/kernel/entry/syscall-common.c
index 940a597ded40..e6237b536d8b 100644
--- a/kernel/entry/syscall-common.c
+++ b/kernel/entry/syscall-common.c
@@ -17,10 +17,9 @@ static inline void syscall_enter_audit(struct pt_regs *regs, long syscall)
 	}
 }
 
-long syscall_trace_enter(struct pt_regs *regs, long syscall,
-				unsigned long work)
+long syscall_trace_enter(struct pt_regs *regs, unsigned long work)
 {
-	long ret = 0;
+	long syscall, ret = 0;
 
 	/*
 	 * Handle Syscall User Dispatch.  This must comes first, since
-- 
2.34.1