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authorGregory CLEMENT <gregory.clement@bootlin.com>2025-05-05 14:57:58 +0200
committerThomas Bogendoerfer <tsbogend@alpha.franken.de>2025-05-20 08:43:24 +0200
commit4cc7543eb494daae7d6282e17459e1b06eff82aa (patch)
treef1386b59f4274a6982d4e01497c8f9df5617ebc2 /tools/perf/scripts/python/parallel-perf.py
parent3b3704261e851e25983860e4c352f1f73786f4ab (diff)
MIPS: SMP: Move the AP sync point before the non-parallel aware functions
When CONFIG_HOTPLUG_PARALLEL is enabled, the code executing before cpuhp_ap_sync_alive() is executed in parallel, while after it is serialized. The functions set_cpu_sibling_map() and set_cpu_core_map() were not designed to be executed in parallel, so by moving the cpuhp_ap_sync_alive() before cpuhp_ap_sync_alive(), we then ensure they will be called serialized. The measurement done on EyeQ5 did not show any relevant boot time increase after applying this patch. Fixes: 76c43eb507bc ("MIPS: SMP: Implement parallel CPU bring up for EyeQ") Reported-by: Huacai Chen <chenhuacai@kernel.org> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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