diff options
Diffstat (limited to 'samples/damon/mtier.c')
| -rw-r--r-- | samples/damon/mtier.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/samples/damon/mtier.c b/samples/damon/mtier.c index ed6bed8b3d4d..88156145172f 100644 --- a/samples/damon/mtier.c +++ b/samples/damon/mtier.c @@ -27,14 +27,14 @@ module_param(node1_end_addr, ulong, 0600); static int damon_sample_mtier_enable_store( const char *val, const struct kernel_param *kp); -static const struct kernel_param_ops enable_param_ops = { +static const struct kernel_param_ops enabled_param_ops = { .set = damon_sample_mtier_enable_store, .get = param_get_bool, }; -static bool enable __read_mostly; -module_param_cb(enable, &enable_param_ops, &enable, 0600); -MODULE_PARM_DESC(enable, "Enable of disable DAMON_SAMPLE_MTIER"); +static bool enabled __read_mostly; +module_param_cb(enabled, &enabled_param_ops, &enabled, 0600); +MODULE_PARM_DESC(enabled, "Enable or disable DAMON_SAMPLE_MTIER"); static struct damon_ctx *ctxs[2]; @@ -156,20 +156,23 @@ static bool init_called; static int damon_sample_mtier_enable_store( const char *val, const struct kernel_param *kp) { - bool enabled = enable; + bool is_enabled = enabled; int err; - err = kstrtobool(val, &enable); + err = kstrtobool(val, &enabled); if (err) return err; - if (enable == enabled) + if (enabled == is_enabled) return 0; - if (enable) { + if (!init_called) + return 0; + + if (enabled) { err = damon_sample_mtier_start(); if (err) - enable = false; + enabled = false; return err; } damon_sample_mtier_stop(); @@ -181,10 +184,10 @@ static int __init damon_sample_mtier_init(void) int err = 0; init_called = true; - if (enable) { + if (enabled) { err = damon_sample_mtier_start(); if (err) - enable = false; + enabled = false; } return 0; } |