To assign the threads to the correct CPU we need to use the cpuset
size as upper bound for the loop and not the number of threads.
Fixes: 85b0763dacd9 ("oslat: Use parse_cpumask() from rt-numa.h")
Reported-by: Peter Xu <peterx@xxxxxxxxxx>
Signed-off-by: Daniel Wagner <dwagner@xxxxxxx>
---
src/oslat/oslat.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/src/oslat/oslat.c b/src/oslat/oslat.c
index d3f659b218b0..62b82098419a 100644
--- a/src/oslat/oslat.c
+++ b/src/oslat/oslat.c
@@ -742,9 +742,12 @@ int main(int argc, char *argv[])
n_cores = numa_bitmask_weight(cpu_set);
TEST(threads = calloc(1, n_cores * sizeof(threads[0])));
- for (i = 0; i < n_cores; ++i)
- if (numa_bitmask_isbitset(cpu_set, i) && move_to_core(i) == 0)
+ for (i = 0; n_cores && i < cpu_set->size; i++) {
+ if (numa_bitmask_isbitset(cpu_set, i) && move_to_core(i) == 0) {
threads[g.n_threads_total++].core_i = i;
+ n_cores--;
+ }
+ }
if (numa_bitmask_isbitset(cpu_set, 0) && g.rtprio)
printf("WARNING: Running SCHED_FIFO workload on CPU 0 may hang the thread\n");
--
2.30.0
