s390/vtime: Fix virtual timer forwarding

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[ Upstream commit dbc0fb3567 ]

Since delayed accounting of system time [1] the virtual timer is
forwarded by do_account_vtime() but also vtime_account_kernel(),
vtime_account_softirq(), and vtime_account_hardirq(). This leads
to double accounting of system, guest, softirq, and hardirq time.

Remove accounting from the vtime_account*() family to restore old behavior.

There is only one user of the vtimer interface, which might explain
why nobody noticed this so far.

Fixes: b7394a5f4c ("sched/cputime, s390: Implement delayed accounting of system time") [1]
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Heiko Carstens 2026-02-18 15:20:05 +01:00 • committed by Sasha Levin

parent d30168b0cb

commit 00ea0c8696

1 changed files with 2 additions and 16 deletions

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arch/s390/kernel/vtime.c

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