1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Common Primitives for DAMON Modules
4 *
5 * Author: SeongJae Park <sj@kernel.org>
6 */
7
8 #include <linux/damon.h>
9
10 #include "modules-common.h"
11
12 /*
13 * Allocate, set, and return a DAMON context for the physical address space.
14 * @ctxp: Pointer to save the point to the newly created context
15 * @targetp: Pointer to save the point to the newly created target
16 */
17 int damon_modules_new_paddr_ctx_target(struct damon_ctx **ctxp,
18 struct damon_target **targetp)
19 {
20 struct damon_ctx *ctx;
21 struct damon_target *target;
22
23 ctx = damon_new_ctx();
24 if (!ctx)
25 return -ENOMEM;
26
27 if (damon_select_ops(ctx, DAMON_OPS_PADDR)) {
28 damon_destroy_ctx(ctx);
29 return -EINVAL;
30 }
31
32 target = damon_new_target();
33 if (!target) {
34 damon_destroy_ctx(ctx);
35 return -ENOMEM;
36 }
37 damon_add_target(ctx, target);
38
39 *ctxp = ctx;
40 *targetp = target;
41 return 0;
42 }
43
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