linux-kernel - [tip: core/entry] entry: Remove unused syscall argument from syscall_trace

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Message-ID: <176981000946.2495410.3737314275813737405.tip-bot2@tip-bot2>
Date: Fri, 30 Jan 2026 21:53:29 -0000
From: "tip-bot2 for Jinjie Ruan" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Jinjie Ruan <ruanjinjie@...wei.com>, Thomas Gleixner <tglx@...nel.org>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: core/entry] entry: Remove unused syscall argument from
 syscall_trace_enter()

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

Commit-ID:     03150a9f84b328f5c724b8ed9ff8600c2d7e2d7b
Gitweb:        https://git.kernel.org/tip/03150a9f84b328f5c724b8ed9ff8600c2d7e2d7b
Author:        Jinjie Ruan <ruanjinjie@...wei.com>
AuthorDate:    Wed, 28 Jan 2026 11:19:21 +08:00
Committer:     Thomas Gleixner <tglx@...nel.org>
CommitterDate: Fri, 30 Jan 2026 15:38:09 +01:00

entry: Remove unused syscall argument from syscall_trace_enter()

The 'syscall' argument of 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@...wei.com>
Signed-off-by: Thomas Gleixner <tglx@...nel.org>
Link: https://patch.msgid.link/20260128031934.3906955-2-ruanjinjie@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 87efb38..e4a8287 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 940a597..e6237b5 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