From: Pingfan Liu kernelfans@gmail.com
[ Upstream commit b709e32ef570b8b91dfbcb63cffac4324c87799f ]
When CONFIG_IRQ_TIME_ACCOUNTING and CONFIG_VIRT_CPU_ACCOUNTING_GEN, powerpc does not enable "sched_clock_irqtime" and can not utilize irq time accounting.
Like x86, powerpc does not use the sched_clock_register() interface. So it needs an dedicated call to enable_sched_clock_irqtime() to enable irq time accounting.
Fixes: 518470fe962e ("powerpc: Add HAVE_IRQ_TIME_ACCOUNTING") Signed-off-by: Pingfan Liu kernelfans@gmail.com [mpe: Add fixes tag] Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/1603349479-26185-1-git-send-email-kernelfans@gmail... Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/kernel/time.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 7d372ff3504b2..1d20f0f77a920 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -53,6 +53,7 @@ #include <linux/of_clk.h> #include <linux/suspend.h> #include <linux/sched/cputime.h> +#include <linux/sched/clock.h> #include <linux/processor.h> #include <asm/trace.h>
@@ -1095,6 +1096,7 @@ void __init time_init(void) tick_setup_hrtimer_broadcast();
of_clk_init(NULL); + enable_sched_clock_irqtime(); }
/*