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bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
107 lines
2.1 KiB
C
107 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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// Copyright 2017 IBM Corp.
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#include "ocxl_internal.h"
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struct id_range {
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struct list_head list;
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u32 start;
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u32 end;
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};
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#ifdef DEBUG
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static void dump_list(struct list_head *head, char *type_str)
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{
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struct id_range *cur;
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pr_debug("%s ranges allocated:\n", type_str);
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list_for_each_entry(cur, head, list) {
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pr_debug("Range %d->%d\n", cur->start, cur->end);
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}
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}
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#endif
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static int range_alloc(struct list_head *head, u32 size, int max_id,
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char *type_str)
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{
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struct list_head *pos;
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struct id_range *cur, *new;
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int rc, last_end;
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new = kmalloc_obj(struct id_range);
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if (!new)
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return -ENOMEM;
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pos = head;
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last_end = -1;
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list_for_each_entry(cur, head, list) {
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if ((cur->start - last_end) > size)
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break;
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last_end = cur->end;
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pos = &cur->list;
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}
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new->start = last_end + 1;
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new->end = new->start + size - 1;
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if (new->end > max_id) {
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kfree(new);
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rc = -ENOSPC;
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} else {
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list_add(&new->list, pos);
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rc = new->start;
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}
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#ifdef DEBUG
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dump_list(head, type_str);
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#endif
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return rc;
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}
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static void range_free(struct list_head *head, u32 start, u32 size,
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char *type_str)
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{
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bool found = false;
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struct id_range *cur, *tmp;
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list_for_each_entry_safe(cur, tmp, head, list) {
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if (cur->start == start && cur->end == (start + size - 1)) {
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found = true;
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list_del(&cur->list);
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kfree(cur);
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break;
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}
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}
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WARN_ON(!found);
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#ifdef DEBUG
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dump_list(head, type_str);
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#endif
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}
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int ocxl_pasid_afu_alloc(struct ocxl_fn *fn, u32 size)
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{
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int max_pasid;
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if (fn->config.max_pasid_log < 0)
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return -ENOSPC;
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max_pasid = 1 << fn->config.max_pasid_log;
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return range_alloc(&fn->pasid_list, size, max_pasid, "afu pasid");
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}
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void ocxl_pasid_afu_free(struct ocxl_fn *fn, u32 start, u32 size)
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{
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return range_free(&fn->pasid_list, start, size, "afu pasid");
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}
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int ocxl_actag_afu_alloc(struct ocxl_fn *fn, u32 size)
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{
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int max_actag;
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max_actag = fn->actag_enabled;
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return range_alloc(&fn->actag_list, size, max_actag, "afu actag");
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}
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void ocxl_actag_afu_free(struct ocxl_fn *fn, u32 start, u32 size)
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{
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return range_free(&fn->actag_list, start, size, "afu actag");
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}
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