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6b34a099 |
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23-Oct-2022 |
Nicholas Piggin <npiggin@gmail.com> |
powerpc/64s/hash: add stress_hpt kernel boot option to increase hash faults This option increases the number of hash misses by limiting the number of kernel HPT entries, by keeping a per-CPU record of the last kernel HPTEs installed, and removing that from the hash table on the next hash insertion. A timer round-robins CPUs removing remaining kernel HPTEs and clearing the TLB (in the case of bare metal) to increase and slightly randomise kernel fault activity. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Add comment about NR_CPUS usage, fixup whitespace] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20221024030150.852517-1-npiggin@gmail.com
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47d99948 |
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29-Mar-2019 |
Christophe Leroy <christophe.leroy@c-s.fr> |
powerpc/mm: Move book3s64 specifics in subdirectory mm/book3s64 Many files in arch/powerpc/mm are only for book3S64. This patch creates a subdirectory for them. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> [mpe: Update the selftest sym links, shorten new filenames, cleanup some whitespace and formatting in the new files.] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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