Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/src/shared/numa-util.h b/src/shared/numa-util.h
new file mode 100644
index 0000000..2f736c9
--- /dev/null
+++ b/src/shared/numa-util.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include "cpu-set-util.h"
+#include "missing_syscall.h"
+
+static inline bool mpol_is_valid(int t) {
+        return t >= MPOL_DEFAULT && t <= MPOL_LOCAL;
+}
+
+typedef struct NUMAPolicy {
+        /* Always use numa_policy_get_type() to read the value */
+        int type;
+        CPUSet nodes;
+} NUMAPolicy;
+
+bool numa_policy_is_valid(const NUMAPolicy *p);
+
+static inline int numa_policy_get_type(const NUMAPolicy *p) {
+        return p->type < 0 ? (p->nodes.set ? MPOL_PREFERRED : -1) : p->type;
+}
+
+static inline void numa_policy_reset(NUMAPolicy *p) {
+        assert(p);
+        cpu_set_reset(&p->nodes);
+        p->type = -1;
+}
+
+int apply_numa_policy(const NUMAPolicy *policy);
+int numa_to_cpu_set(const NUMAPolicy *policy, CPUSet *set);
+
+int numa_mask_add_all(CPUSet *mask);
+
+const char* mpol_to_string(int i) _const_;
+int mpol_from_string(const char *s) _pure_;