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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/kernel/sched/cpuacct.c
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@@ -5,6 +5,7 @@
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  * Based on the work by Paul Menage (menage@google.com) and Balbir Singh
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  * (balbir@in.ibm.com).
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  */
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+#include <asm/irq_regs.h>
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 #include "sched.h"
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 /* Time spent by the tasks of the CPU accounting group executing in ... */
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@@ -339,7 +340,7 @@
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 {
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 	struct cpuacct *ca;
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 	int index = CPUACCT_STAT_SYSTEM;
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-	struct pt_regs *regs = task_pt_regs(tsk);
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+	struct pt_regs *regs = get_irq_regs() ? : task_pt_regs(tsk);
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 	if (regs && user_mode(regs))
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 		index = CPUACCT_STAT_USER;
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@@ -347,7 +348,7 @@
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 	rcu_read_lock();
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 	for (ca = task_ca(tsk); ca; ca = parent_ca(ca))
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-		this_cpu_ptr(ca->cpuusage)->usages[index] += cputime;
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+		__this_cpu_add(ca->cpuusage->usages[index], cputime);
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 	rcu_read_unlock();
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 }
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@@ -363,7 +364,7 @@
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 	rcu_read_lock();
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 	for (ca = task_ca(tsk); ca != &root_cpuacct; ca = parent_ca(ca))
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-		this_cpu_ptr(ca->cpustat)->cpustat[index] += val;
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+		__this_cpu_add(ca->cpustat->cpustat[index], val);
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 	rcu_read_unlock();
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 }
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