linux-kernel - [patch 03/11] rseq: Rename rseq_syscall() to rseq_debug_syscall

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Message-ID: <20250813162823.972744605@linutronix.de>
Date: Wed, 13 Aug 2025 18:29:19 +0200 (CEST)
From: Thomas Gleixner <tglx@...utronix.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Michael Jeanson <mjeanson@...icios.com>,
 Peter Zijlstra <peterz@...radead.org>,
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 "Paul E. McKenney" <paulmck@...nel.org>,
 Boqun Feng <boqun.feng@...il.com>,
 Wei Liu <wei.liu@...nel.org>,
 Jens Axboe <axboe@...nel.dk>
Subject: [patch 03/11] rseq: Rename rseq_syscall() to
 rseq_debug_syscall_exit()

rseq_syscall() is a debug function, which is invoked before the syscall
exit work is handled. Name it so it's clear what it does.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc: "Paul E. McKenney" <paulmck@...nel.org>
Cc: Boqun Feng <boqun.feng@...il.com>
---
 include/linux/entry-common.h |    2 +-
 include/linux/rseq.h         |    4 ++--
 kernel/rseq.c                |    5 +++--
 3 files changed, 6 insertions(+), 5 deletions(-)

--- a/include/linux/entry-common.h
+++ b/include/linux/entry-common.h
@@ -162,7 +162,7 @@ static __always_inline void syscall_exit
 			local_irq_enable();
 	}
 
-	rseq_syscall(regs);
+	rseq_debug_syscall_exit(regs);
 
 	/*
 	 * Do one-time syscall specific work. If these work items are
--- a/include/linux/rseq.h
+++ b/include/linux/rseq.h
@@ -113,9 +113,9 @@ static inline void rseq_exit_to_user_mod
 #endif  /* !CONFIG_RSEQ */
 
 #ifdef CONFIG_DEBUG_RSEQ
-void rseq_syscall(struct pt_regs *regs);
+void rseq_debug_syscall_exit(struct pt_regs *regs);
 #else /* CONFIG_DEBUG_RSEQ */
-static inline void rseq_syscall(struct pt_regs *regs) { }
+static inline void rseq_debug_syscall_exit(struct pt_regs *regs) { }
 #endif /* !CONFIG_DEBUG_RSEQ */
 
 #endif /* _LINUX_RSEQ_H */
--- a/kernel/rseq.c
+++ b/kernel/rseq.c
@@ -427,7 +427,8 @@ void __rseq_handle_notify_resume(struct
 	 * this invocation was invoked inside a critical section, then it
 	 * will either end up in this code again or a possible violation of
 	 * a syscall inside a critical region can only be detected by the
-	 * debug code in rseq_syscall() in a debug enabled kernel.
+	 * debug code in rseq_debug_syscall_exit() in a debug enabled
+	 * kernel.
 	 */
 	if (regs) {
 		/*
@@ -476,7 +477,7 @@ void __rseq_handle_notify_resume(struct
  * Terminate the process if a syscall is issued within a restartable
  * sequence.
  */
-void rseq_syscall(struct pt_regs *regs)
+void rseq_debug_syscall_exit(struct pt_regs *regs)
 {
 	unsigned long ip = instruction_pointer(regs);
 	struct task_struct *t = current;