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| author |   Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2018-10-23 13:34:56 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2018-10-30 23:11:04 +1100 |
| commit | a95ecac5cb2fc8a8ee606991384d33ee121df00c (patch) | |
| tree | 5800835c357eb44f584c16c572b0b9ab16e489ef /security | |
| parent | Merge branch 'next' of https://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next (diff) | |
| download | linux-dev-a95ecac5cb2fc8a8ee606991384d33ee121df00c.tar.xz linux-dev-a95ecac5cb2fc8a8ee606991384d33ee121df00c.zip | |
selftests/powerpc: Relax L1d miss targets for rfi_flush test
When running the rfi_flush test, if the system is loaded, we see two
issues:
1. The L1d misses when rfi_flush is disabled increase significantly due
to other workloads interfering with the cache.
2. The L1d misses when rfi_flush is enabled sometimes goes slightly
below the expected number of misses.
To address these, let's relax the expected number of L1d misses:
1. When rfi_flush is disabled, we allow upto half the expected number of
the misses for when rfi_flush is enabled.
2. When rfi_flush is enabled, we allow ~1% lower number of cache misses.
Reported-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Tested-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions