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| author | Mark Brown <broonie@kernel.org> | 2015-06-09 18:35:46 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-06-09 18:35:46 +0100 |
| commit | 6724af486903df57338c14424e02599e371cf563 (patch) | |
| tree | 0e42ae32bbfe7e93ba9db11a1124aeb4378cbd71 /arch/s390/kernel/cache.c | |
| parent | d2233325e5b7891914901867ca5355347d59df14 (diff) | |
| parent | 9deef024a12ebae4965c89837f662905ac88944b (diff) | |
Merge branch 'fix/fsl-dspi' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi into spi-fsl-dspi
Diffstat (limited to 'arch/s390/kernel/cache.c')
| -rw-r--r-- | arch/s390/kernel/cache.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/s390/kernel/cache.c b/arch/s390/kernel/cache.c index 0969d113b3d6..bff5e3b6d822 100644 --- a/arch/s390/kernel/cache.c +++ b/arch/s390/kernel/cache.c @@ -70,6 +70,8 @@ void show_cacheinfo(struct seq_file *m) struct cacheinfo *cache; int idx; + if (!test_facility(34)) + return; get_online_cpus(); this_cpu_ci = get_cpu_cacheinfo(cpumask_any(cpu_online_mask)); for (idx = 0; idx < this_cpu_ci->num_leaves; idx++) { @@ -159,6 +161,8 @@ int populate_cache_leaves(unsigned int cpu) union cache_topology ct; enum cache_type ctype; + if (!test_facility(34)) + return -EOPNOTSUPP; ct.raw = ecag(EXTRACT_TOPOLOGY, 0, 0); for (idx = 0, level = 0; level < this_cpu_ci->num_levels && idx < this_cpu_ci->num_leaves; idx++, level++) { |