linux-kernel - Re: [PATCH 11/14] x86/entry: Clarify irq_{enter,exit}

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Message-ID: <20200602150511.GH706478@hirez.programming.kicks-ass.net>
Date:   Tue, 2 Jun 2020 17:05:11 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Qian Cai <cai@....pw>
Cc:     tglx@...utronix.de, luto@...capital.net,
        linux-kernel@...r.kernel.org, x86@...nel.org,
        Lai Jiangshan <laijs@...ux.alibaba.com>,
        sean.j.christopherson@...el.com, andrew.cooper3@...rix.com,
        daniel.thompson@...aro.org, a.darwish@...utronix.de,
        rostedt@...dmis.org, bigeasy@...utronix.de,
        Michael Ellerman <mpe@...erman.id.au>,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 11/14] x86/entry: Clarify irq_{enter,exit}_rcu()

On Tue, Jun 02, 2020 at 10:42:35AM -0400, Qian Cai wrote:

> Reverted this commit fixed the POWER9 boot warning,

ARGH, I'm an idiot. Please try this instead:


diff --git a/kernel/softirq.c b/kernel/softirq.c
index a3eb6eba8c41..c4201b7f42b1 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -438,7 +438,7 @@ void irq_exit_rcu(void)
  */
 void irq_exit(void)
 {
-	irq_exit_rcu();
+	__irq_exit_rcu();
 	rcu_irq_exit();
 	 /* must be last! */
 	lockdep_hardirq_exit();