[patch 204/227] mm/damon/paddr,vaddr: register themselves to DAMON in subsys_initcall

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From: SeongJae Park <sj@xxxxxxxxxx>
Subject: mm/damon/paddr,vaddr: register themselves to DAMON in subsys_initcall

This commit makes the monitoring operations for the physical address space
and virtual address spaces register themselves to DAMON in the
subsys_initcall step.  Later, in-kernel DAMON user code can use them via
damon_select_ops() without have to unnecessarily depend on all possible
monitoring operations implementations.

Link: https://lkml.kernel.org/r/20220215184603.1479-4-sj@xxxxxxxxxx
Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Xin Hao <xhao@xxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 mm/damon/paddr.c |   20 ++++++++++++++++++++
 mm/damon/vaddr.c |   20 ++++++++++++++++++++
 2 files changed, 40 insertions(+)

--- a/mm/damon/paddr.c~mm-damon-paddrvaddr-register-themselves-to-damon-in-subsys_initcall
+++ a/mm/damon/paddr.c
@@ -273,3 +273,23 @@ void damon_pa_set_operations(struct damo
 	ctx->ops.apply_scheme = damon_pa_apply_scheme;
 	ctx->ops.get_scheme_score = damon_pa_scheme_score;
 }
+
+static int __init damon_pa_initcall(void)
+{
+	struct damon_operations ops = {
+		.id = DAMON_OPS_PADDR,
+		.init = NULL,
+		.update = NULL,
+		.prepare_access_checks = damon_pa_prepare_access_checks,
+		.check_accesses = damon_pa_check_accesses,
+		.reset_aggregated = NULL,
+		.target_valid = damon_pa_target_valid,
+		.cleanup = NULL,
+		.apply_scheme = damon_pa_apply_scheme,
+		.get_scheme_score = damon_pa_scheme_score,
+	};
+
+	return damon_register_ops(&ops);
+};
+
+subsys_initcall(damon_pa_initcall);
--- a/mm/damon/vaddr.c~mm-damon-paddrvaddr-register-themselves-to-damon-in-subsys_initcall
+++ a/mm/damon/vaddr.c
@@ -752,4 +752,24 @@ void damon_va_set_operations(struct damo
 	ctx->ops.get_scheme_score = damon_va_scheme_score;
 }
 
+static int __init damon_va_initcall(void)
+{
+	struct damon_operations ops = {
+		.id = DAMON_OPS_VADDR,
+		.init = damon_va_init,
+		.update = damon_va_update,
+		.prepare_access_checks = damon_va_prepare_access_checks,
+		.check_accesses = damon_va_check_accesses,
+		.reset_aggregated = NULL,
+		.target_valid = damon_va_target_valid,
+		.cleanup = NULL,
+		.apply_scheme = damon_va_apply_scheme,
+		.get_scheme_score = damon_va_scheme_score,
+	};
+
+	return damon_register_ops(&ops);
+};
+
+subsys_initcall(damon_va_initcall);
+
 #include "vaddr-test.h"
_



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