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x86/vmware: Enable steal time accounting

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Set paravirt_steal_rq_enabled if steal clock present.
paravirt_steal_rq_enabled is used in sched/core.c to adjust task
progress by offsetting stolen time. Use 'no-steal-acc' off switch (share
same name with KVM) to disable steal time accounting.

Signed-off-by: Alexey Makhalov <amakhalov@vmware.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200323195707.31242-5-amakhalov@vmware.com
This commit is contained in:
Alexey Makhalov
2020-03-23 19:57:06 +00:00
committed by Borislav Petkov
parent ab02bb3f55
commit e73a8f38f8
2 changed files with 13 additions and 2 deletions
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2
Documentation/admin-guide/kernel-parameters.txt
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@@ -3174,7 +3174,7 @@
[X86,PV_OPS] Disable paravirtualized VMware scheduler
clock and use the default one.
no-steal-acc [X86,KVM,ARM64] Disable paravirtualized steal time
no-steal-acc [X86,PV_OPS,ARM64] Disable paravirtualized steal time
accounting. steal time is computed, but won't
influence scheduler behaviour