mm/damon/modules-common: implement a stats parameters generator macro

DAMON_RECLAIM and DAMON_LRU_SORT have module parameters for DAMOS
statistics that having same names.  This commit implements a macro for
generating such module parameters so that we can reuse later.

Link: https://lkml.kernel.org/r/20220913174449.50645-16-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/damon/modules-common.h b/mm/damon/modules-common.h
index 4c2ce84869d5853ecf0de59990ed6a0b06e06b50..ed973e0770ae9bf437a266dfbb565466a0eebdc7 100644 (file)
--- a/mm/damon/modules-common.h
+++ b/mm/damon/modules-common.h
@@ -23,3 +23,15 @@
        module_param_named(wmarks_high, wmarks.high, ulong, 0600);      \
        module_param_named(wmarks_mid, wmarks.mid, ulong, 0600);        \
        module_param_named(wmarks_low, wmarks.low, ulong, 0600);
+
+#define DEFINE_DAMON_MODULES_DAMOS_STATS_PARAMS(stat, try_name,                \
+               succ_name, qt_exceed_name)                              \
+       module_param_named(nr_##try_name, stat.nr_tried, ulong, 0400);  \
+       module_param_named(bytes_##try_name, stat.sz_tried, ulong,      \
+                       0400);                                          \
+       module_param_named(nr_##succ_name, stat.nr_applied, ulong,      \
+                       0400);                                          \
+       module_param_named(bytes_##succ_name, stat.sz_applied, ulong,   \
+                       0400);                                          \
+       module_param_named(qt_exceed_name, stat.qt_exceeds, ulong,      \
+                       0400);