linux-kernel - Re: [RFC][PATCH 00/16] sched: Core scheduling

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Date:   Thu, 14 Mar 2019 14:07:15 +0800
From:   "Li, Aubrey" <aubrey.li@...ux.intel.com>
To:     Aubrey Li <aubrey.intel@...il.com>,
        Tim Chen <tim.c.chen@...ux.intel.com>
Cc:     Subhra Mazumdar <subhra.mazumdar@...cle.com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Paul Turner <pjt@...gle.com>,
        Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Fr?d?ric Weisbecker <fweisbec@...il.com>,
        Kees Cook <keescook@...omium.org>,
        Greg Kerr <kerrnel@...gle.com>
Subject: Re: [RFC][PATCH 00/16] sched: Core scheduling

The original patch seems missing the following change for 32bit.

Thanks,
-Aubrey

diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c
index 9fbb10383434..78de28ebc45d 100644
--- a/kernel/sched/cpuacct.c
+++ b/kernel/sched/cpuacct.c
@@ -111,7 +111,7 @@ static u64 cpuacct_cpuusage_read(struct cpuacct *ca, int cpu,
 	/*
 	 * Take rq->lock to make 64-bit read safe on 32-bit platforms.
 	 */
-	raw_spin_lock_irq(&cpu_rq(cpu)->lock);
+	raw_spin_lock_irq(rq_lockp(cpu_rq(cpu)));
 #endif
 
 	if (index == CPUACCT_STAT_NSTATS) {
@@ -125,7 +125,7 @@ static u64 cpuacct_cpuusage_read(struct cpuacct *ca, int cpu,
 	}
 
 #ifndef CONFIG_64BIT
-	raw_spin_unlock_irq(&cpu_rq(cpu)->lock);
+	raw_spin_unlock_irq(rq_lockp(cpu_rq(cpu)));
 #endif
 
 	return data;
@@ -140,14 +140,14 @@ static void cpuacct_cpuusage_write(struct cpuacct *ca, int cpu, u64 val)
 	/*
 	 * Take rq->lock to make 64-bit write safe on 32-bit platforms.
 	 */
-	raw_spin_lock_irq(&cpu_rq(cpu)->lock);
+	raw_spin_lock_irq(rq_lockp(cpu_rq(cpu)));
 #endif
 
 	for (i = 0; i < CPUACCT_STAT_NSTATS; i++)
 		cpuusage->usages[i] = val;
 
 #ifndef CONFIG_64BIT
-	raw_spin_unlock_irq(&cpu_rq(cpu)->lock);
+	raw_spin_unlock_irq(rq_lockp(cpu_rq(cpu)));
 #endif
 }
 
@@ -252,13 +252,13 @@ static int cpuacct_all_seq_show(struct seq_file *m, void *V)
 			 * Take rq->lock to make 64-bit read safe on 32-bit
 			 * platforms.
 			 */
-			raw_spin_lock_irq(&cpu_rq(cpu)->lock);
+			raw_spin_lock_irq(rq_lockp(cpu_rq(cpu)));
 #endif
 
 			seq_printf(m, " %llu", cpuusage->usages[index]);
 
 #ifndef CONFIG_64BIT
-			raw_spin_unlock_irq(&cpu_rq(cpu)->lock);
+			raw_spin_unlock_irq(rq_lockp(cpu_rq(cpu)));
 #endif
 		}
 		seq_puts(m, "\n");