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Commit bca811a7 authored by Dan Williams's avatar Dan Williams
Browse files

nfit, address-range-scrub: add module option to skip initial ars 



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: default avatarDave Jiang <dave.jiang@intel.com>
Signed-off-by: default avatarDave Jiang <dave.jiang@intel.com>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent bc6ba808

drivers/acpi/nfit/core.c

+7 −0
Original line number Diff line number Diff line
@@ -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);