[ndctl PATCH 3/5] ndctl, scrub: add ndctl_bus_start_scrub()

Provide a helper routine to kick off a new ARS scrub if one is not already running, or otherwise detect if ARS functionality is available. Signed-off-by: Dan Williams <dan.j.williams(a)intel.com&gt; --- ndctl/lib/libndctl.c | 13 +++++++++++++ ndctl/lib/libndctl.sym | 1 + ndctl/libndctl.h | 1 + 3 files changed, 15 insertions(+) diff --git a/ndctl/lib/libndctl.c b/ndctl/lib/libndctl.c index ff0d44ffefe6..21dd7207ea5e 100644 --- a/ndctl/lib/libndctl.c +++ b/ndctl/lib/libndctl.c @@ -1146,6 +1146,19 @@ static int __ndctl_bus_get_scrub_state(struct ndctl_bus *bus, } } +NDCTL_EXPORT int ndctl_bus_start_scrub(struct ndctl_bus *bus) +{ + struct ndctl_ctx *ctx = ndctl_bus_get_ctx(bus); + int rc; + + rc = sysfs_write_attr(ctx, bus->scrub_path, "1\n"); + if (rc == -EBUSY) + return rc; + else if (rc < 0) + return -EOPNOTSUPP; + return 0; +} + NDCTL_EXPORT int ndctl_bus_get_scrub_state(struct ndctl_bus *bus) { unsigned int scrub_count = 0; diff --git a/ndctl/lib/libndctl.sym b/ndctl/lib/libndctl.sym index 06cace96724f..fd8f37d1783e 100644 --- a/ndctl/lib/libndctl.sym +++ b/ndctl/lib/libndctl.sym @@ -353,4 +353,5 @@ global: ndctl_region_get_persistence_domain; ndctl_bus_get_persistence_domain; ndctl_bus_get_scrub_state; + ndctl_bus_start_scrub; } LIBNDCTL_14; diff --git a/ndctl/libndctl.h b/ndctl/libndctl.h index 36c04d871bd5..e690f9483fbf 100644 --- a/ndctl/libndctl.h +++ b/ndctl/libndctl.h @@ -122,6 +122,7 @@ int ndctl_bus_wait_probe(struct ndctl_bus *bus); int ndctl_bus_wait_for_scrub_completion(struct ndctl_bus *bus); unsigned int ndctl_bus_get_scrub_count(struct ndctl_bus *bus); int ndctl_bus_get_scrub_state(struct ndctl_bus *bus); +int ndctl_bus_start_scrub(struct ndctl_bus *bus); int ndctl_bus_has_error_injection(struct ndctl_bus *bus); struct ndctl_dimm;