1 files changed, 0 insertions, 83 deletions

diff --git a/include/linux/percpu_ida.h b/include/linux/percpu_ida.h
deleted file mode 100644
index 07d78e4653bc..000000000000
--- a/include/linux/percpu_ida.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __PERCPU_IDA_H__
-#define __PERCPU_IDA_H__
-
-#include <linux/types.h>
-#include <linux/bitops.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/spinlock_types.h>
-#include <linux/wait.h>
-#include <linux/cpumask.h>
-
-struct percpu_ida_cpu;
-
-struct percpu_ida {
-        /*
-         * number of tags available to be allocated, as passed to
-         * percpu_ida_init()
-         */
-        unsigned                        nr_tags;
-        unsigned                        percpu_max_size;
-        unsigned                        percpu_batch_size;
-
-        struct percpu_ida_cpu __percpu  *tag_cpu;
-
-        /*
-         * Bitmap of cpus that (may) have tags on their percpu freelists:
-         * steal_tags() uses this to decide when to steal tags, and which cpus
-         * to try stealing from.
-         *
-         * It's ok for a freelist to be empty when its bit is set - steal_tags()
-         * will just keep looking - but the bitmap _must_ be set whenever a
-         * percpu freelist does have tags.
-         */
-        cpumask_t                       cpus_have_tags;
-
-        struct {
-                spinlock_t              lock;
-                /*
-                 * When we go to steal tags from another cpu (see steal_tags()),
-                 * we want to pick a cpu at random. Cycling through them every
-                 * time we steal is a bit easier and more or less equivalent:
-                 */
-                unsigned                cpu_last_stolen;
-
-                /* For sleeping on allocation failure */
-                wait_queue_head_t       wait;
-
-                /*
-                 * Global freelist - it's a stack where nr_free points to the
-                 * top
-                 */
-                unsigned                nr_free;
-                unsigned                *freelist;
-        } ____cacheline_aligned_in_smp;
-};
-
-/*
- * Number of tags we move between the percpu freelist and the global freelist at
- * a time
- */
-#define IDA_DEFAULT_PCPU_BATCH_MOVE     32U
-/* Max size of percpu freelist, */
-#define IDA_DEFAULT_PCPU_SIZE   ((IDA_DEFAULT_PCPU_BATCH_MOVE * 3) / 2)
-
-int percpu_ida_alloc(struct percpu_ida *pool, int state);
-void percpu_ida_free(struct percpu_ida *pool, unsigned tag);
-
-void percpu_ida_destroy(struct percpu_ida *pool);
-int __percpu_ida_init(struct percpu_ida *pool, unsigned long nr_tags,
-        unsigned long max_size, unsigned long batch_size);
-static inline int percpu_ida_init(struct percpu_ida *pool, unsigned long nr_tags)
-{
-        return __percpu_ida_init(pool, nr_tags, IDA_DEFAULT_PCPU_SIZE,
-                IDA_DEFAULT_PCPU_BATCH_MOVE);
-}
-
-typedef int (*percpu_ida_cb)(unsigned, void *);
-int percpu_ida_for_each_free(struct percpu_ida *pool, percpu_ida_cb fn,
-        void *data);
-
-unsigned percpu_ida_free_tags(struct percpu_ida *pool, int cpu);
-#endif /* __PERCPU_IDA_H__ */