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