From: Tom Hromatka <tom.hromatka@oracle.com>
Date: Fri, 28 Jan 2022 17:23:55 +0000 (-0700)
Subject: abstraction-map: Add cpuset.cpu_exclusive <-> cpuset.cpus.partition mapping
X-Git-Tag: v3.0~224
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=40fd2fb6b2116ec46fde1ec93efee478a7fd766e;p=thirdparty%2Flibcgroup.git

abstraction-map: Add cpuset.cpu_exclusive <-> cpuset.cpus.partition mapping

Add custom functions to map cpuset.cpu_exclusive <->
cpuset.cpus.partition.

Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>
Reviewed-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
---

diff --git a/src/Makefile.am b/src/Makefile.am
index 80d95a1a..37db235c 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -23,7 +23,7 @@ libcgroup_la_SOURCES = parse.h parse.y lex.l api.c config.c \
 		       libcgroup-internal.h libcgroup.map wrapper.c log.c \
 		       abstraction-common.c abstraction-common.h \
 		       abstraction-map.c abstraction-map.h \
-		       abstraction-cpu.c
+		       abstraction-cpu.c abstraction-cpuset.c
 libcgroup_la_LIBADD = -lpthread $(CODE_COVERAGE_LIBS)
 libcgroup_la_CFLAGS = $(CODE_COVERAGE_CFLAGS) -DSTATIC=static
 libcgroup_la_LDFLAGS = -Wl,--version-script,$(srcdir)/libcgroup.map \
diff --git a/src/abstraction-common.h b/src/abstraction-common.h
index 8e508e25..e24b89c3 100644
--- a/src/abstraction-common.h
+++ b/src/abstraction-common.h
@@ -114,6 +114,20 @@ int cgroup_convert_cpu_max_to_period(
 	const char * const out_setting,
 	void *in_dflt, void *out_dflt);
 
+/* cpuset */
+int cgroup_convert_cpuset_to_exclusive(
+	struct cgroup_controller * const dst_cgc,
+	const char * const in_value,
+	const char * const out_setting,
+	void *in_dflt, void *out_dflt);
+
+int cgroup_convert_cpuset_to_partition(
+	struct cgroup_controller * const dst_cgc,
+	const char * const in_value,
+	const char * const out_setting,
+	void *in_dflt, void *out_dflt);
+
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif
diff --git a/src/abstraction-cpuset.c b/src/abstraction-cpuset.c
new file mode 100644
index 00000000..7fa9bae5
--- /dev/null
+++ b/src/abstraction-cpuset.c
@@ -0,0 +1,66 @@
+/**
+ * Libcgroup abstraction layer for the cpuset controller
+ *
+ * Copyright (c) 2021-2022 Oracle and/or its affiliates.
+ * Author: Tom Hromatka <tom.hromatka@oracle.com>
+ */
+
+/*
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of version 2.1 of the GNU Lesser General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, see <http://www.gnu.org/licenses>.
+ */
+
+#include <libcgroup.h>
+#include <libcgroup-internal.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "abstraction-common.h"
+
+static const char * const MEMBER = "member";
+static const char * const ROOT = "root";
+
+int cgroup_convert_cpuset_to_exclusive(
+	struct cgroup_controller * const dst_cgc,
+	const char * const in_value,
+	const char * const out_setting,
+	void *in_dflt, void *out_dflt)
+{
+	int ret;
+
+	if (strcmp(in_value, ROOT) == 0)
+		ret = cgroup_add_value_string(dst_cgc, out_setting, "1");
+	else
+		ret = cgroup_add_value_string(dst_cgc, out_setting, "0");
+
+	return ret;
+}
+
+int cgroup_convert_cpuset_to_partition(
+	struct cgroup_controller * const dst_cgc,
+	const char * const in_value,
+	const char * const out_setting,
+	void *in_dflt, void *out_dflt)
+{
+	int ret;
+
+	if (strcmp(in_value, "1") == 0)
+		ret = cgroup_add_value_string(dst_cgc, out_setting, ROOT);
+	else
+		ret = cgroup_add_value_string(dst_cgc, out_setting, MEMBER);
+
+	return ret;
+}
diff --git a/src/abstraction-map.c b/src/abstraction-map.c
index 4b792050..5e1c2c02 100644
--- a/src/abstraction-map.c
+++ b/src/abstraction-map.c
@@ -43,6 +43,8 @@ const struct cgroup_abstraction_map cgroup_v1_to_v2_map[] = {
 		"cpuset.mems.effective", NULL},
 	{cgroup_convert_passthrough, "cpuset.cpus", NULL, "cpuset.cpus", NULL},
 	{cgroup_convert_passthrough, "cpuset.mems", NULL, "cpuset.mems", NULL},
+	{cgroup_convert_cpuset_to_partition, "cpuset.cpu_exclusive", NULL,
+		"cpuset.cpus.partition", NULL},
 };
 const int cgroup_v1_to_v2_map_sz = sizeof(cgroup_v1_to_v2_map) /
 				   sizeof(cgroup_v1_to_v2_map[0]);
@@ -59,6 +61,8 @@ const struct cgroup_abstraction_map cgroup_v2_to_v1_map[] = {
 		"cpuset.effective_mems", NULL},
 	{cgroup_convert_passthrough, "cpuset.cpus", NULL, "cpuset.cpus", NULL},
 	{cgroup_convert_passthrough, "cpuset.mems", NULL, "cpuset.mems", NULL},
+	{cgroup_convert_cpuset_to_exclusive, "cpuset.cpus.partition", NULL,
+		"cpuset.cpu_exclusive", NULL},
 };
 const int cgroup_v2_to_v1_map_sz = sizeof(cgroup_v2_to_v1_map) /
 				   sizeof(cgroup_v2_to_v1_map[0]);