The patch titled
Subject: mm/damon/dbgfs: use damon_select_ops() instead of damon_{v,p}a_set_operations()
has been added to the -mm tree. Its filename is
mm-damon-dbgfs-use-damon_select_ops-instead-of-damon_vpa_set_operations.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-damon-dbgfs-use-damon_select_ops-instead-of-damon_vpa_set_operations.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-damon-dbgfs-use-damon_select_ops-instead-of-damon_vpa_set_operations.patch
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------------------------------------------------------
From: SeongJae Park <sj@xxxxxxxxxx>
Subject: mm/damon/dbgfs: use damon_select_ops() instead of damon_{v,p}a_set_operations()
This commit makes DAMON debugfs interface to select the registered
monitoring operations for the physical address space or virtual address
spaces depending on user requests instead of setting it on its own. Note
that DAMON debugfs interface is still dependent to DAMON_VADDR with this
change, because it is also using its symbol, 'damon_va_target_valid'.
Link: https://lkml.kernel.org/r/20220215184603.1479-6-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/dbgfs.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
--- a/mm/damon/dbgfs.c~mm-damon-dbgfs-use-damon_select_ops-instead-of-damon_vpa_set_operations
+++ a/mm/damon/dbgfs.c
@@ -474,12 +474,18 @@ static ssize_t dbgfs_target_ids_write(st
/* remove previously set targets */
dbgfs_set_targets(ctx, 0, NULL);
+ if (!nr_targets) {
+ ret = count;
+ goto unlock_out;
+ }
/* Configure the context for the address space type */
if (id_is_pid)
- damon_va_set_operations(ctx);
+ ret = damon_select_ops(ctx, DAMON_OPS_VADDR);
else
- damon_pa_set_operations(ctx);
+ ret = damon_select_ops(ctx, DAMON_OPS_PADDR);
+ if (ret)
+ goto unlock_out;
ret = dbgfs_set_targets(ctx, nr_targets, target_pids);
if (!ret)
@@ -735,7 +741,11 @@ static struct damon_ctx *dbgfs_new_ctx(v
if (!ctx)
return NULL;
- damon_va_set_operations(ctx);
+ if (damon_select_ops(ctx, DAMON_OPS_VADDR) && damon_select_ops(ctx,
+ DAMON_OPS_PADDR)) {
+ damon_destroy_ctx(ctx);
+ return NULL;
+ }
ctx->callback.before_terminate = dbgfs_before_terminate;
return ctx;
}
_
Patches currently in -mm which might be from sj@xxxxxxxxxx are
mm-munlock-mlock_page-munlock_page-batch-by-pagevec-fix-2.patch
mm-damon-dbgfs-init_regions-use-target-index-instead-of-target-id.patch
docs-admin-guide-mm-damon-usage-update-for-changed-initail_regions-file-input.patch
mm-damon-core-move-damon_set_targets-into-dbgfs.patch
mm-damon-remove-the-target-id-concept.patch
mm-damon-rename-damon_primitives-to-damon_operations.patch
mm-damon-let-monitoring-operations-can-be-registered-and-selected.patch
mm-damon-paddrvaddr-register-themselves-to-damon-in-subsys_initcall.patch
mm-damon-reclaim-use-damon_select_ops-instead-of-damon_vpa_set_operations.patch
mm-damon-dbgfs-use-damon_select_ops-instead-of-damon_vpa_set_operations.patch
mm-damon-dbgfs-use-operations-id-for-knowing-if-the-target-has-pid.patch
mm-damon-dbgfs-test-fix-is_target_id-change.patch
mm-damon-paddrvaddr-remove-damon_pva_target_validset_operations.patch
