From: Petr Holasek <pholasek@redhat.com>
To: linux-numa@vger.kernel.org
Cc: Filipe Brandenburger <filbranden@google.com>,
Cliff Wickman <cpw@sgi.com>, Petr Holasek <pholasek@redhat.com>
Subject: [PATCH] libnuma: supress warnings for non-existing node
Date: Mon, 7 Dec 2015 15:32:29 +0100 [thread overview]
Message-ID: <1449498749-22377-1-git-send-email-pholasek@redhat.com> (raw)
When calling numa_node_to_cpus on non-existing node number (e.g. for
non-contiguous node numbers), a bit confusing warning is supressed. Since
warnings are implemented as weak functions they cannot be overriden when
using dlsym interface.
Signed-off-by: Petr Holasek <pholasek@redhat.com>
---
libnuma.c | 24 ++++++++++++++----------
1 file changed, 14 insertions(+), 10 deletions(-)
diff --git a/libnuma.c b/libnuma.c
index 3717d5b..549525c 100644
--- a/libnuma.c
+++ b/libnuma.c
@@ -1276,11 +1276,13 @@ numa_node_to_cpus_v1(int node, unsigned long *buffer, int bufferlen)
sprintf(fn, "/sys/devices/system/node/node%d/cpumap", node);
f = fopen(fn, "r");
if (!f || getdelim(&line, &len, '\n', f) < 1) {
- numa_warn(W_nosysfs2,
- "/sys not mounted or invalid. Assuming one node: %s",
- strerror(errno));
- numa_warn(W_nosysfs2,
- "(cannot open or correctly parse %s)", fn);
+ if (numa_bitmask_isbitset(numa_nodes_ptr, node)) {
+ numa_warn(W_nosysfs2,
+ "/sys not mounted or invalid. Assuming one node: %s",
+ strerror(errno));
+ numa_warn(W_nosysfs2,
+ "(cannot open or correctly parse %s)", fn);
+ }
bitmask.maskp = (unsigned long *)mask;
bitmask.size = buflen_needed * 8;
numa_bitmask_setall(&bitmask);
@@ -1355,11 +1357,13 @@ numa_node_to_cpus_v2(int node, struct bitmask *buffer)
sprintf(fn, "/sys/devices/system/node/node%d/cpumap", node);
f = fopen(fn, "r");
if (!f || getdelim(&line, &len, '\n', f) < 1) {
- numa_warn(W_nosysfs2,
- "/sys not mounted or invalid. Assuming one node: %s",
- strerror(errno));
- numa_warn(W_nosysfs2,
- "(cannot open or correctly parse %s)", fn);
+ if (numa_bitmask_isbitset(numa_nodes_ptr, node)) {
+ numa_warn(W_nosysfs2,
+ "/sys not mounted or invalid. Assuming one node: %s",
+ strerror(errno));
+ numa_warn(W_nosysfs2,
+ "(cannot open or correctly parse %s)", fn);
+ }
numa_bitmask_setall(mask);
err = -1;
}
--
2.4.3
next reply other threads:[~2015-12-07 14:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-07 14:32 Petr Holasek [this message]
2015-12-11 15:48 ` [PATCH] libnuma: supress warnings for non-existing node Filipe Brandenburger
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