* General Public License version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA
- *
* GPL HEADER END
*/
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
*
- * Copyright (c) 2012, 2015, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*
* Example: if there are 8 cores on the system, while creating a CPT
* with cpu_npartitions=4:
- * core[0, 1] = partition[0], core[2, 3] = partition[1]
- * core[4, 5] = partition[2], core[6, 7] = partition[3]
+ * core[0, 1] = partition[0], core[2, 3] = partition[1]
+ * core[4, 5] = partition[2], core[6, 7] = partition[3]
*
* cpu_npartitions=1:
- * core[0, 1, ... 7] = partition[0]
+ * core[0, 1, ... 7] = partition[0]
*
* . User can also specify CPU partitions by string pattern
*
* Examples: cpu_partitions="0[0,1], 1[2,3]"
- * cpu_partitions="N 0[0-3], 1[4-8]"
+ * cpu_partitions="N 0[0-3], 1[4-8]"
*
* The first character "N" means following numbers are numa ID
*
#ifndef __LIBCFS_CPU_H__
#define __LIBCFS_CPU_H__
-#ifndef HAVE_LIBCFS_CPT
+#include <linux/cpu.h>
+#include <linux/cpuset.h>
+#include <linux/slab.h>
+#include <linux/topology.h>
+#include <linux/version.h>
+#include <linux/vmalloc.h>
+
+#include <libcfs/linux/linux-cpu.h>
+
+#ifdef CONFIG_SMP
+
+/** virtual processing unit */
+struct cfs_cpu_partition {
+ /* CPUs mask for this partition */
+ cpumask_t *cpt_cpumask;
+ /* nodes mask for this partition */
+ nodemask_t *cpt_nodemask;
+ /* NUMA distance between CPTs */
+ unsigned int *cpt_distance;
+ /* spread rotor for NUMA allocator */
+ int cpt_spread_rotor;
+ /* NUMA node if cpt_nodemask is empty */
+ int cpt_node;
+};
+#endif /* CONFIG_SMP */
+/** descriptor for CPU partitions */
struct cfs_cpt_table {
+#ifdef CONFIG_SMP
+ /* spread rotor for NUMA allocator */
+ int ctb_spread_rotor;
+ /* maximum NUMA distance between all nodes in table */
+ unsigned int ctb_distance;
+ /* partitions tables */
+ struct cfs_cpu_partition *ctb_parts;
+ /* shadow HW CPU to CPU partition ID */
+ int *ctb_cpu2cpt;
+ /* shadow HW node to CPU partition ID */
+ int *ctb_node2cpt;
/* # of CPU partitions */
- int ctb_nparts;
- /* cpu mask */
- cpumask_t ctb_mask;
- /* node mask */
- nodemask_t ctb_nodemask;
- /* version */
- __u64 ctb_version;
+ int ctb_nparts;
+ /* all nodes in this partition table */
+ nodemask_t *ctb_nodemask;
+#else
+ nodemask_t ctb_nodemask;
+#endif /* CONFIG_SMP */
+ /* all cpus in this partition table */
+ cpumask_t *ctb_cpumask;
};
-#endif /* !HAVE_LIBCFS_CPT */
-
/* any CPU partition */
#define CFS_CPT_ANY (-1)
/**
* create a cfs_cpt_table with \a ncpt number of partitions
*/
-struct cfs_cpt_table *cfs_cpt_table_alloc(unsigned int ncpt);
+struct cfs_cpt_table *cfs_cpt_table_alloc(int ncpt);
/**
* print string information of cpt-table
*/
int cfs_cpt_table_print(struct cfs_cpt_table *cptab, char *buf, int len);
/**
+ * print distance information of cpt-table
+ */
+int cfs_cpt_distance_print(struct cfs_cpt_table *cptab, char *buf, int len);
+/**
* return total number of CPU partitions in \a cptab
*/
-int
-cfs_cpt_number(struct cfs_cpt_table *cptab);
+int cfs_cpt_number(struct cfs_cpt_table *cptab);
/**
- * return number of HW cores or hypter-threadings in a CPU partition \a cpt
+ * return number of HW cores or hyper-threadings in a CPU partition \a cpt
*/
int cfs_cpt_weight(struct cfs_cpt_table *cptab, int cpt);
/**
*/
int cfs_cpt_of_cpu(struct cfs_cpt_table *cptab, int cpu);
/**
+ * shadow HW node ID \a NODE to CPU-partition ID by \a cptab
+ */
+int cfs_cpt_of_node(struct cfs_cpt_table *cptab, int node);
+/**
+ * NUMA distance between \a cpt1 and \a cpt2 in \a cptab
+ */
+unsigned int cfs_cpt_distance(struct cfs_cpt_table *cptab, int cpt1, int cpt2);
+/**
* bind current thread on a CPU-partition \a cpt of \a cptab
*/
int cfs_cpt_bind(struct cfs_cpt_table *cptab, int cpt);
/**
- * add \a cpu to CPU partion @cpt of \a cptab, return 1 for success,
+ * add \a cpu to CPU partition @cpt of \a cptab, return 1 for success,
* otherwise 0 is returned
*/
int cfs_cpt_set_cpu(struct cfs_cpt_table *cptab, int cpt, int cpu);
* add all cpus in \a mask to CPU partition \a cpt
* return 1 if successfully set all CPUs, otherwise return 0
*/
-int cfs_cpt_set_cpumask(struct cfs_cpt_table *cptab,
- int cpt, const cpumask_t *mask);
+int cfs_cpt_set_cpumask(struct cfs_cpt_table *cptab, int cpt,
+ const cpumask_t *mask);
/**
* remove all cpus in \a mask from CPU partition \a cpt
*/
-void cfs_cpt_unset_cpumask(struct cfs_cpt_table *cptab,
- int cpt, const cpumask_t *mask);
+void cfs_cpt_unset_cpumask(struct cfs_cpt_table *cptab, int cpt,
+ const cpumask_t *mask);
/**
* add all cpus in NUMA node \a node to CPU partition \a cpt
* return 1 if successfully set all CPUs, otherwise return 0
* add all cpus in node mask \a mask to CPU partition \a cpt
* return 1 if successfully set all CPUs, otherwise return 0
*/
-int cfs_cpt_set_nodemask(struct cfs_cpt_table *cptab,
- int cpt, nodemask_t *mask);
+int cfs_cpt_set_nodemask(struct cfs_cpt_table *cptab, int cpt,
+ const nodemask_t *mask);
/**
* remove all cpus in node mask \a mask from CPU partition \a cpt
*/
-void cfs_cpt_unset_nodemask(struct cfs_cpt_table *cptab,
- int cpt, nodemask_t *mask);
+void cfs_cpt_unset_nodemask(struct cfs_cpt_table *cptab, int cpt,
+ const nodemask_t *mask);
/**
* convert partition id \a cpt to numa node id, if there are more than one
* nodes in this partition, it might return a different node id each time.
*/
int cfs_cpt_spread_node(struct cfs_cpt_table *cptab, int cpt);
-/**
- * return number of HTs in the same core of \a cpu
- */
-int cfs_cpu_ht_nsiblings(int cpu);
-
/*
* allocate per-cpu-partition data, returned value is an array of pointers,
* variable can be indexed by CPU ID.
- * cptab != NULL: size of array is number of CPU partitions
- * cptab == NULL: size of array is number of HW cores
+ * cptab != NULL: size of array is number of CPU partitions
+ * cptab == NULL: size of array is number of HW cores
*/
void *cfs_percpt_alloc(struct cfs_cpt_table *cptab, unsigned int size);
/*
- * destory per-cpu-partition variable
+ * destroy per-cpu-partition variable
*/
-void cfs_percpt_free(void *vars);
-int cfs_percpt_number(void *vars);
+void cfs_percpt_free(void *vars);
+int cfs_percpt_number(void *vars);
#define cfs_percpt_for_each(var, i, vars) \
for (i = 0; i < cfs_percpt_number(vars) && \
/* lock private lock \a index of \a pcl */
void cfs_percpt_lock(struct cfs_percpt_lock *pcl, int index);
+
/* unlock private lock \a index of \a pcl */
void cfs_percpt_unlock(struct cfs_percpt_lock *pcl, int index);
-#define CFS_PERCPT_LOCK_KEYS 256
+#define CFS_PERCPT_LOCK_KEYS 256
/* NB: don't allocate keys dynamically, lockdep needs them to be in ".data" */
#define cfs_percpt_lock_alloc(cptab) \
({ \
- static struct lock_class_key ___keys[CFS_PERCPT_LOCK_KEYS]; \
- struct cfs_percpt_lock *___lk; \
+ static struct lock_class_key ___keys[CFS_PERCPT_LOCK_KEYS]; \
+ struct cfs_percpt_lock *___lk; \
\
if (cfs_cpt_number(cptab) > CFS_PERCPT_LOCK_KEYS) \
___lk = cfs_percpt_lock_create(cptab, NULL); \
#define cfs_cpt_for_each(i, cptab) \
for (i = 0; i < cfs_cpt_number(cptab); i++)
-#ifndef __read_mostly
-# define __read_mostly
-#endif
-
-#ifndef ____cacheline_aligned
-#define ____cacheline_aligned
-#endif
-
int cfs_cpu_init(void);
void cfs_cpu_fini(void);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff