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powerpc/time: Enable sched clock for irqtime

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[ Upstream commit b709e32ef5 ]

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: 518470fe96 ("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.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Pingfan Liu 2020-10-22 14:51:19 +08:00 committed by Greg Kroah-Hartman
parent f6ba4a84b9
commit 99e7c8d157
1 changed files with 2 additions and 0 deletions
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2
arch/powerpc/kernel/time.c
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@ -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();
}
/*