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| author | Ingo Molnar <mingo@kernel.org> | 2015-05-08 13:33:33 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-05-08 13:33:33 +0200 |
| commit | 7ae383be81781c5e1347f71c3eb0d53ce5188200 (patch) | |
| tree | d2dfedb78cf4ee2bc9cc460af3be106b08e01050 /arch/s390/kernel/cache.c | |
| parent | 2a4e90b18c256d52a7f3f77d58114f6d4e4a7f9f (diff) | |
| parent | 3e0283a53f7d2f2dae7bc4aa7f3104cb5988018f (diff) | |
Merge branch 'linus' into x86/asm, before applying dependent patch
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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++) { |