Searched hist:"6 b34a099faa123488b13caf704562f4dbe483fc4" (Results 1 – 4 of 4) sorted by relevance
| /linux/arch/powerpc/mm/book3s64/ |
| H A D | hash_4k.c | diff 6b34a099faa123488b13caf704562f4dbe483fc4 Mon Oct 24 05:01:50 CEST 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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| H A D | hash_64k.c | diff 6b34a099faa123488b13caf704562f4dbe483fc4 Mon Oct 24 05:01:50 CEST 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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| H A D | internal.h | diff 6b34a099faa123488b13caf704562f4dbe483fc4 Mon Oct 24 05:01:50 CEST 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
|
| /linux/Documentation/admin-guide/ |
| H A D | kernel-parameters.txt | diff 6b34a099faa123488b13caf704562f4dbe483fc4 Mon Oct 24 05:01:50 CEST 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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