diff options
| -rw-r--r-- | include/linux/damon.h | 3 | ||||
| -rw-r--r-- | mm/damon/sysfs.c | 4 | ||||
| -rw-r--r-- | mm/damon/vaddr.c | 15 |
3 files changed, 20 insertions, 2 deletions
diff --git a/include/linux/damon.h b/include/linux/damon.h index 73ff0e2d2a4d..09a5d0d02c00 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -261,10 +261,13 @@ struct damos { * enum damon_ops_id - Identifier for each monitoring operations implementation * * @DAMON_OPS_VADDR: Monitoring operations for virtual address spaces + * @DAMON_OPS_FVADDR: Monitoring operations for only fixed ranges of virtual + * address spaces * @DAMON_OPS_PADDR: Monitoring operations for the physical address space */ enum damon_ops_id { DAMON_OPS_VADDR, + DAMON_OPS_FVADDR, DAMON_OPS_PADDR, NR_DAMON_OPS, }; diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 6ad6364780b8..719a286d378f 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -1694,6 +1694,7 @@ static struct kobj_type damon_sysfs_attrs_ktype = { /* This should match with enum damon_ops_id */ static const char * const damon_sysfs_ops_strs[] = { "vaddr", + "unsupported", /* fvaddr is not supported by sysfs yet */ "paddr", }; @@ -1843,6 +1844,9 @@ static ssize_t operations_store(struct kobject *kobj, for (id = 0; id < NR_DAMON_OPS; id++) { if (sysfs_streq(buf, damon_sysfs_ops_strs[id])) { + /* fvaddr is not supported by sysfs yet */ + if (id == DAMON_OPS_FVADDR) + return -EINVAL; context->ops_id = id; return count; } diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c index b2ec0aa1ff45..5ba82ab4943b 100644 --- a/mm/damon/vaddr.c +++ b/mm/damon/vaddr.c @@ -753,8 +753,19 @@ static int __init damon_va_initcall(void) .apply_scheme = damon_va_apply_scheme, .get_scheme_score = damon_va_scheme_score, }; - - return damon_register_ops(&ops); + /* ops for fixed virtual address ranges */ + struct damon_operations ops_fvaddr = ops; + int err; + + /* Don't set the monitoring target regions for the entire mapping */ + ops_fvaddr.id = DAMON_OPS_FVADDR; + ops_fvaddr.init = NULL; + ops_fvaddr.update = NULL; + + err = damon_register_ops(&ops); + if (err) + return err; + return damon_register_ops(&ops_fvaddr); }; subsys_initcall(damon_va_initcall); |