On 08/20/2015 08:52 AM, Jeff Mahoney wrote:
From: Josef Cejka <jcejka@xxxxxxxx>
In get_ncpus, we default to using 4096 CPUs if _SC_NPROCESSORS_CONF isn't
enabled. If that is insufficient, sched_getaffinity will fail and we
retry after doubling the size of the cpu_set_t allocation. There's a typo
in there that means we don't actually double the size and will loop
forever allocating the same sized cpu_set_t instead.
Signed-off-by: Josef Cejka <jcejka@xxxxxxxx>
Signed-off-by: Jeff Mahoney <jeffm@xxxxxxxx>
---
btreplay/btreplay.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/btreplay/btreplay.c
+++ b/btreplay/btreplay.c
@@ -516,7 +516,7 @@ realloc:
if (sched_getaffinity(getpid(), size, cpus)) {
if( errno == EINVAL && nrcpus < (4096<<4) ) {
CPU_FREE(cpus);
- nrcpus <= 1;
+ nrcpus <<= 1;
Hah, well that sucks. Looks like commit 0a915aabe88ff added that
problem, and wasn't caught in review.
Thanks, applied.
--
Jens Axboe
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