From c7edb7ac8472a57e0c56a3a95796db3af98b2383 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sun, 1 Sep 2024 12:06:14 +0100 Subject: regmap: kunit: Add coverage of spinlocked regmaps By default regmap uses a mutex to protect the regmap but we also support other kinds of locking, including spinlocks, which can have an impact especially around allocations. Ensure that we are covering the spinlock case by running tests configured using fast I/O, this causes the core to use a spinlock instead of a mutex. Running every single test would be redundant but cover most of them. Signed-off-by: Mark Brown Link: https://patch.msgid.link/20240901-regmap-test-fast-io-v1-1-aad83a871bcc@kernel.org Signed-off-by: Mark Brown --- drivers/base/regmap/regmap-kunit.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) (limited to 'drivers/base') diff --git a/drivers/base/regmap/regmap-kunit.c b/drivers/base/regmap/regmap-kunit.c index b80b447c87a2..4bf3f1e59ed7 100644 --- a/drivers/base/regmap/regmap-kunit.c +++ b/drivers/base/regmap/regmap-kunit.c @@ -22,6 +22,7 @@ struct regmap_test_param { enum regmap_endian val_endian; unsigned int from_reg; + bool fast_io; }; static void get_changed_bytes(void *orig, void *new, size_t size) @@ -80,41 +81,52 @@ static const char *regmap_endian_name(enum regmap_endian endian) static void param_to_desc(const struct regmap_test_param *param, char *desc) { - snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%s-%s @%#x", + snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%s-%s%s @%#x", regcache_type_name(param->cache), regmap_endian_name(param->val_endian), + param->fast_io ? " fast I/O" : "", param->from_reg); } static const struct regmap_test_param regcache_types_list[] = { { .cache = REGCACHE_NONE }, + { .cache = REGCACHE_NONE, .fast_io = true }, { .cache = REGCACHE_FLAT }, + { .cache = REGCACHE_FLAT, .fast_io = true }, { .cache = REGCACHE_RBTREE }, + { .cache = REGCACHE_RBTREE, .fast_io = true }, { .cache = REGCACHE_MAPLE }, + { .cache = REGCACHE_MAPLE, .fast_io = true }, }; KUNIT_ARRAY_PARAM(regcache_types, regcache_types_list, param_to_desc); static const struct regmap_test_param real_cache_types_only_list[] = { { .cache = REGCACHE_FLAT }, + { .cache = REGCACHE_FLAT, .fast_io = true }, { .cache = REGCACHE_RBTREE }, + { .cache = REGCACHE_RBTREE, .fast_io = true }, { .cache = REGCACHE_MAPLE }, + { .cache = REGCACHE_MAPLE, .fast_io = true }, }; KUNIT_ARRAY_PARAM(real_cache_types_only, real_cache_types_only_list, param_to_desc); static const struct regmap_test_param real_cache_types_list[] = { { .cache = REGCACHE_FLAT, .from_reg = 0 }, + { .cache = REGCACHE_FLAT, .from_reg = 0, .fast_io = true }, { .cache = REGCACHE_FLAT, .from_reg = 0x2001 }, { .cache = REGCACHE_FLAT, .from_reg = 0x2002 }, { .cache = REGCACHE_FLAT, .from_reg = 0x2003 }, { .cache = REGCACHE_FLAT, .from_reg = 0x2004 }, { .cache = REGCACHE_RBTREE, .from_reg = 0 }, + { .cache = REGCACHE_RBTREE, .from_reg = 0, .fast_io = true }, { .cache = REGCACHE_RBTREE, .from_reg = 0x2001 }, { .cache = REGCACHE_RBTREE, .from_reg = 0x2002 }, { .cache = REGCACHE_RBTREE, .from_reg = 0x2003 }, { .cache = REGCACHE_RBTREE, .from_reg = 0x2004 }, { .cache = REGCACHE_MAPLE, .from_reg = 0 }, + { .cache = REGCACHE_RBTREE, .from_reg = 0, .fast_io = true }, { .cache = REGCACHE_MAPLE, .from_reg = 0x2001 }, { .cache = REGCACHE_MAPLE, .from_reg = 0x2002 }, { .cache = REGCACHE_MAPLE, .from_reg = 0x2003 }, @@ -125,11 +137,13 @@ KUNIT_ARRAY_PARAM(real_cache_types, real_cache_types_list, param_to_desc); static const struct regmap_test_param sparse_cache_types_list[] = { { .cache = REGCACHE_RBTREE, .from_reg = 0 }, + { .cache = REGCACHE_RBTREE, .from_reg = 0, .fast_io = true }, { .cache = REGCACHE_RBTREE, .from_reg = 0x2001 }, { .cache = REGCACHE_RBTREE, .from_reg = 0x2002 }, { .cache = REGCACHE_RBTREE, .from_reg = 0x2003 }, { .cache = REGCACHE_RBTREE, .from_reg = 0x2004 }, { .cache = REGCACHE_MAPLE, .from_reg = 0 }, + { .cache = REGCACHE_MAPLE, .from_reg = 0, .fast_io = true }, { .cache = REGCACHE_MAPLE, .from_reg = 0x2001 }, { .cache = REGCACHE_MAPLE, .from_reg = 0x2002 }, { .cache = REGCACHE_MAPLE, .from_reg = 0x2003 }, @@ -151,6 +165,7 @@ static struct regmap *gen_regmap(struct kunit *test, struct reg_default *defaults; config->cache_type = param->cache; + config->fast_io = param->fast_io; if (config->max_register == 0) { config->max_register = param->from_reg; -- cgit v1.2.3