[PATCH v3 3/3] nfit, address-range-scrub: add module option to skip initial ars
From: Dan Williams <hidden>
Date: 2018-04-07 15:56:13
Also in:
lkml, nvdimm
Subsystem:
acpi, libnvdimm: non-volatile memory device subsystem, the rest · Maintainers:
"Rafael J. Wysocki", Dan Williams, Vishal Verma, Dave Jiang, Alison Schofield, Linus Torvalds
After attempting to quickly retrieve known errors the kernel proceeds to kick off a long running ARS. Add a module option to disable this behavior at initialization time, or at new region discovery time. Otherwise, ARS can be started manually regardless of the state of this setting. Co-developed-by: Dave Jiang <redacted> Signed-off-by: Dave Jiang <redacted> Signed-off-by: Dan Williams <redacted> --- drivers/acpi/nfit/core.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 2532294bbd68..7f3c70fde9a8 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c@@ -49,6 +49,10 @@ module_param(default_dsm_family, int, S_IRUGO); MODULE_PARM_DESC(default_dsm_family, "Try this DSM type first when identifying NVDIMM family"); +static bool no_init_ars; +module_param(no_init_ars, bool, 0644); +MODULE_PARM_DESC(no_init_ars, "Skip ARS run at nfit init time"); + LIST_HEAD(acpi_descs); DEFINE_MUTEX(acpi_desc_lock);
@@ -2816,6 +2820,9 @@ static int ars_register(struct acpi_nfit_desc *acpi_desc, struct nfit_spa *nfit_ { int rc = *query_rc; + if (no_init_ars) + return acpi_nfit_register_region(acpi_desc, nfit_spa); + set_bit(ARS_REQ, &nfit_spa->ars_state); set_bit(ARS_SHORT, &nfit_spa->ars_state);