| 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, id: 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, t: target); |
| 38 | |
| 39 | *ctxp = ctx; |
| 40 | *targetp = target; |
| 41 | return 0; |
| 42 | } |
| 43 |