lscpu: allow read_cache() to be called for offline cpus

First check path before accessing files to be sure they actually exist. This is
necessary when also informations for offline CPUs will be printed.  Since we do
not necessarily know if "cpu is offline" means the same as "path does not
exist" just check for it.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

diff --git a/sys-utils/lscpu.c b/sys-utils/lscpu.c
index 203c64f512366094b3c3400e3da50fd5aabb263d..1e37471ac45b6bd6597f01db376fea3ab1278de8 100644 (file)
--- a/sys-utils/lscpu.c
+++ b/sys-utils/lscpu.c
@@ -804,6 +804,9 @@ read_cache(struct lscpu_desc *desc, int num)
                struct cpu_cache *ca = &desc->caches[i];
                cpu_set_t *map;
 
+               if (!path_exist(_PATH_SYS_SYSTEM "/cpu/cpu%d/cache/index%d",
+                               num, i))
+                       continue;
                if (!ca->name) {
                        int type, level;