This is a note to let you know that I've just added the patch titled
powerpc/time: Enable sched clock for irqtime
to the 5.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-time-enable-sched-clock-for-irqtime.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ae96e163cd15c7a547dc10d105634ef7816bd244
Author: Pingfan Liu <kernelfans@xxxxxxxxx>
Date: Thu Oct 22 14:51:19 2020 +0800
powerpc/time: Enable sched clock for irqtime
[ 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@xxxxxxxxx>
[mpe: Add fixes tag]
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/1603349479-26185-1-git-send-email-kernelfans@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 67feb35244606..83633a24ce788 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>
@@ -1030,6 +1031,7 @@ void __init time_init(void)
tick_setup_hrtimer_broadcast();
of_clk_init(NULL);
+ enable_sched_clock_irqtime();
}
/*
