linux-kernel - [PATCH 2/2] x86/entry: Remove `regs' parameter from idtentry_exit_cond

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Date:   Tue, 30 Jun 2020 12:22:09 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     linux-kernel@...r.kernel.org
Cc:     Andy Lutomirski <luto@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H . Peter Anvin " <hpa@...or.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [PATCH 2/2] x86/entry: Remove `regs' parameter from idtentry_exit_cond_resched()

The `regs' parameter is not used in idtentry_exit_cond_resched() and can
be removed.

Remove the `regs' parameter.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
---
 arch/x86/entry/common.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c
index 212382f61b8e4..652dce37643b4 100644
--- a/arch/x86/entry/common.c
+++ b/arch/x86/entry/common.c
@@ -610,7 +610,7 @@ bool noinstr idtentry_enter_cond_rcu(struct pt_regs *regs)
 	return false;
 }
 
-static void idtentry_exit_cond_resched(struct pt_regs *regs, bool may_sched)
+static void idtentry_exit_cond_resched(bool may_sched)
 {
 	if (may_sched && should_resched(0)) {
 		/* Sanity check RCU and thread stack */
@@ -664,7 +664,7 @@ void noinstr idtentry_exit_cond_rcu(struct pt_regs *regs, bool rcu_exit)
 		}
 
 		instrumentation_begin();
-		idtentry_exit_cond_resched(regs, IS_ENABLED(CONFIG_PREEMPTION));
+		idtentry_exit_cond_resched(IS_ENABLED(CONFIG_PREEMPTION));
 		instrumentation_end();
 	} else {
 		/*
@@ -770,7 +770,7 @@ __visible noinstr void xen_pv_evtchn_do_upcall(struct pt_regs *regs)
 	inhcall = get_and_clear_inhcall();
 	if (inhcall && !WARN_ON_ONCE(rcu_exit)) {
 		instrumentation_begin();
-		idtentry_exit_cond_resched(regs, true);
+		idtentry_exit_cond_resched(true);
 		instrumentation_end();
 		restore_inhcall(inhcall);
 	} else {
-- 
2.27.0