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| author | Josef Cejka <jcejka@suse.com> | 2015-08-20 11:52:51 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-08-20 08:58:08 -0700 |
| commit | 2564a6029e55d6a0507ebb28a5a01f5dffb0bd56 (patch) | |
| tree | 6795fe80baef6274e55616d02215fec79a928a77 | |
| parent | 88d38b4d0a5b33332fa80d7028a87c0717bb5d75 (diff) | |
| download | blktrace-2564a6029e55d6a0507ebb28a5a01f5dffb0bd56.tar.gz | |
btreplay: Fix typo in scaling up the dynamic cpu set size.
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@suse.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
| -rw-r--r-- | btreplay/btreplay.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/btreplay/btreplay.c b/btreplay/btreplay.c index 5444010..f762279 100644 --- 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; goto realloc; } fatal("sched_getaffinity", ERR_SYSCALL, "Can't get CPU info\n"); |