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| author | Srikar Dronamraju <srikar@linux.vnet.ibm.com> | 2020-09-21 15:26:51 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-10-06 23:22:27 +1100 |
| commit | 3ab33d6dc3e98e83b55732049e1d1d488207bb6d (patch) | |
| tree | 7260a6b198ca3598505ab5906242d394660428e5 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 375370a10d061d5c75c6bc5b09c5db4cc0b0fcfe (diff) | |
powerpc/smp: Optimize update_mask_by_l2
All threads of a SMT4 core can either be part of this CPU's l2-cache
mask or not related to this CPU l2-cache mask. Use this relation to
reduce the number of iterations needed to find all the CPUs that share
the same l2-cache.
Use a temporary mask to iterate through the CPUs that may share l2_cache
mask. Also instead of setting one CPU at a time into cpu_l2_cache_mask,
copy the SMT4/sub mask at one shot.
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200921095653.9701-10-srikar@linux.vnet.ibm.com
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions