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    Subject[PATCH 5.10 328/663] powerpc/time: Enable sched clock for irqtime
    Date
    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.com
    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();
    }

    /*
    --
    2.27.0


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