Re: [PATCH v4 1/2] powerpc/64s/hash: Add stress_slb kernel boot option to increase SLB faults

2020-06-08 Thread Michael Ellerman
On Mon, 11 May 2020 22:58:24 +1000, Michael Ellerman wrote: > This option increases the number of SLB misses by limiting the number > of kernel SLB entries, and increased flushing of cached lookaside > information. This helps stress test difficult to hit paths in the > kernel. > > [mpe: Relocate t

[PATCH v4 1/2] powerpc/64s/hash: Add stress_slb kernel boot option to increase SLB faults

2020-05-11 Thread Michael Ellerman
From: Nicholas Piggin This option increases the number of SLB misses by limiting the number of kernel SLB entries, and increased flushing of cached lookaside information. This helps stress test difficult to hit paths in the kernel. Reported-by: kbuild test robot Signed-off-by: Nicholas Piggin