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authorNicholas Piggin <[email protected]>2021-11-23 19:51:49 +1000
committerMichael Ellerman <[email protected]>2021-11-24 21:08:57 +1100
commit245ebf8e7380b3d84c0aac37fbfd9306b45a3a7a (patch)
treec971581a1e6f91ba65b4b13eef7d6b4781f6b10d /tools/perf/scripts/python/netdev-times.py
parentd3c8a2d3740d93778ea102d4c781746d284177bf (diff)
powerpc/64s: Always set PMU control registers to frozen/disabled when not in use
KVM PMU management code looks for particular frozen/disabled bits in the PMU registers so it knows whether it must clear them when coming out of a guest or not. Setting this up helps KVM make these optimisations without getting confused. Longer term the better approach might be to move guest/host PMU switching to the perf subsystem. Signed-off-by: Nicholas Piggin <[email protected]> Reviewed-by: Athira Jajeev <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
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