diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2021-11-23 19:52:31 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-11-24 21:09:03 +1100 |
| commit | 9c5a432a558105d6145b058fad78eb6fcf3d4c38 (patch) | |
| tree | 720d06d1fad98677d031f55d4e44a8738201c1fa /tools/perf/scripts/python/check-perf-trace.py | |
| parent | 6398326b9ba182936bdc9d66475c09e39b701aa2 (diff) | |
KVM: PPC: Book3S HV P9: Remove subcore HMI handling
On POWER9 and newer, rather than the complex HMI synchronisation and
subcore state, have each thread un-apply the guest TB offset before
calling into the early HMI handler.
This allows the subcore state to be avoided, including subcore enter
/ exit guest, which includes an expensive divide that shows up
slightly in profiles.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211123095231.1036501-54-npiggin@gmail.com
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions