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| author |   Srikar Dronamraju <srikar@linux.vnet.ibm.com> | 2020-09-21 15:26:46 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2020-10-06 23:22:26 +1100 |
| commit | 70edd4a7c753ba18e3e4bb9e97b6d85156cea738 (patch) | |
| tree | 11c780d909f7301ee5c6af159f58ca19cecd154e /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | powerpc/smp: Remove get_physical_package_id (diff) | |
| download | linux-dev-70edd4a7c753ba18e3e4bb9e97b6d85156cea738.tar.xz linux-dev-70edd4a7c753ba18e3e4bb9e97b6d85156cea738.zip | |
powerpc/smp: Optimize remove_cpu_from_masks
While offlining a CPU, system currently iterate through all the CPUs in
the DIE to clear sibling, l2_cache and smallcore maps. However if there
are more cores in a DIE, system can end up spending more time iterating
through CPUs which are completely unrelated.
Optimize this by only iterating through smaller but relevant cpumap.
If shared_cache is set, cpu_l2_cache_map should be relevant else
cpu_sibling_map would be relevant.
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Tested-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200921095653.9701-5-srikar@linux.vnet.ibm.com
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions