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authorZhen Lei <thunder.leizhen@huawei.com>2022-11-19 12:25:03 +0300
committerPaul E. McKenney <paulmck@kernel.org>2023-01-04 04:51:38 +0300
commit47904aed898a08f028572b9b5a5cc101ddfb2d82 (patch)
treecda9f44a69794606c63398bd82c340c71e19ee32 /include/linux/kernel_stat.h
parent1b929c02afd37871d5afb9d498426f83432e71c2 (diff)
downloadlinux-47904aed898a08f028572b9b5a5cc101ddfb2d82.tar.xz
genirq: Fix the return type of kstat_cpu_irqs_sum()
The type of member ->irqs_sum is unsigned long, but kstat_cpu_irqs_sum() returns int, which can result in truncation. Therefore, change the kstat_cpu_irqs_sum() function's return value to unsigned long to avoid truncation. Fixes: f2c66cd8eedd ("/proc/stat: scalability of irq num per cpu") Reported-by: Elliott, Robert (Servers) <elliott@hpe.com> Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Cc: Tejun Heo <tj@kernel.org> Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org> Cc: Josh Don <joshdon@google.com> Cc: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'include/linux/kernel_stat.h')
-rw-r--r--include/linux/kernel_stat.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index ddb5a358fd82..90e2fdc17d79 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -75,7 +75,7 @@ extern unsigned int kstat_irqs_usr(unsigned int irq);
/*
* Number of interrupts per cpu, since bootup
*/
-static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu)
+static inline unsigned long kstat_cpu_irqs_sum(unsigned int cpu)
{
return kstat_cpu(cpu).irqs_sum;
}