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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2022-01-28 15:39:59 -0300 |
|---|---|---|
| committer | John Kacur <jkacur@redhat.com> | 2022-01-28 16:09:57 -0500 |
| commit | 795433f50f20ef7598db5cfe991b5386e4080d41 (patch) | |
| tree | f97c44e0200147d008fe29207edf0dad2874a209 | |
| parent | 4fac6f28af3aec1c88f19bf96ef73541c1ae5858 (diff) | |
| download | rt-tests-795433f50f20ef7598db5cfe991b5386e4080d41.tar.gz | |
rt-numa: ignore runtime cpumask if -a CPULIST is specified
When using isolcpus kernel command line option, the CPUs
specified at isolcpus= are not part of the run time environment
cpumask.
This causes "cyclictest -a isolatedcpus" to fail with:
WARN: Couldn't setaffinity in main thread: Invalid argument
FATAL: No allowable cpus to run on
# /dev/cpu_dma_latency set to 0us
To fix this, ignore the runtime cpumask if neither "+", "!"
are specified in the cpu list string.
Suggested by Sebastian Andrzej Siewior.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
v2: fix changelog typo
v3: simplified version (John Kacur)
Signed-off-by: John Kacur <jkacur@redhat.com>
| -rw-r--r-- | src/lib/rt-numa.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/lib/rt-numa.c b/src/lib/rt-numa.c index ee5ab99..3eead80 100644 --- a/src/lib/rt-numa.c +++ b/src/lib/rt-numa.c @@ -131,7 +131,8 @@ int parse_cpumask(char *str, int max_cpus, struct bitmask **cpumask) return 0; } - use_current_cpuset(max_cpus, mask); + if (strchr(str, '!') != NULL || strchr(str, '+') != NULL) + use_current_cpuset(max_cpus, mask); *cpumask = mask; return 0; |