linux-kernel - [tip: core/rseq] rseq: Remove the ksig argument from rseq_handle_notify

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Message-ID: <176173343931.2601451.5057970472600914752.tip-bot2@tip-bot2>
Date: Wed, 29 Oct 2025 10:23:59 -0000
From: "tip-bot2 for Thomas Gleixner" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>,
 "Peter Zijlstra (Intel)" <peterz@...radead.org>,
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: core/rseq] rseq: Remove the ksig argument from
 rseq_handle_notify_resume()

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

Commit-ID:     dfd205204dd4c459d5911fd1cfb17f86cae80150
Gitweb:        https://git.kernel.org/tip/dfd205204dd4c459d5911fd1cfb17f86cae80150
Author:        Thomas Gleixner <tglx@...utronix.de>
AuthorDate:    Mon, 27 Oct 2025 09:44:22 +01:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Wed, 29 Oct 2025 11:07:12 +01:00

rseq: Remove the ksig argument from rseq_handle_notify_resume()

There is no point for this being visible in the resume_to_user_mode()
handling.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Link: https://patch.msgid.link/20251027084306.211520245@linutronix.de
---
 include/linux/resume_user_mode.h |  2 +-
 include/linux/rseq.h             | 13 +++++++------
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/include/linux/resume_user_mode.h b/include/linux/resume_user_mode.h
index e0135e0..dd3bf7d 100644
--- a/include/linux/resume_user_mode.h
+++ b/include/linux/resume_user_mode.h
@@ -59,7 +59,7 @@ static inline void resume_user_mode_work(struct pt_regs *regs)
 	mem_cgroup_handle_over_high(GFP_KERNEL);
 	blkcg_maybe_throttle_current();
 
-	rseq_handle_notify_resume(NULL, regs);
+	rseq_handle_notify_resume(regs);
 }
 
 #endif /* LINUX_RESUME_USER_MODE_H */
diff --git a/include/linux/rseq.h b/include/linux/rseq.h
index 21f875a..c06a8e5 100644
--- a/include/linux/rseq.h
+++ b/include/linux/rseq.h
@@ -37,19 +37,20 @@ static inline void rseq_set_notify_resume(struct task_struct *t)
 
 void __rseq_handle_notify_resume(struct ksignal *sig, struct pt_regs *regs);
 
-static inline void rseq_handle_notify_resume(struct ksignal *ksig,
-					     struct pt_regs *regs)
+static inline void rseq_handle_notify_resume(struct pt_regs *regs)
 {
 	if (current->rseq)
-		__rseq_handle_notify_resume(ksig, regs);
+		__rseq_handle_notify_resume(NULL, regs);
 }
 
 static inline void rseq_signal_deliver(struct ksignal *ksig,
 				       struct pt_regs *regs)
 {
-	scoped_guard(RSEQ_EVENT_GUARD)
-		__set_bit(RSEQ_EVENT_SIGNAL_BIT, &current->rseq_event_mask);
-	rseq_handle_notify_resume(ksig, regs);
+	if (current->rseq) {
+		scoped_guard(RSEQ_EVENT_GUARD)
+			__set_bit(RSEQ_EVENT_SIGNAL_BIT, &current->rseq_event_mask);
+		__rseq_handle_notify_resume(ksig, regs);
+	}
 }
 
 /* rseq_preempt() requires preemption to be disabled. */