From f7b1843eca6fe295ba0c71fc02a3291954078f2b Mon Sep 17 00:00:00 2001 From: James Morse Date: Fri, 2 Sep 2022 15:48:29 +0000 Subject: x86/resctrl: Make resctrl_arch_rmid_read() return values in bytes resctrl_arch_rmid_read() returns a value in chunks, as read from the hardware. This needs scaling to bytes by mon_scale, as provided by the architecture code. Now that resctrl_arch_rmid_read() performs the overflow and corrections itself, it may as well return a value in bytes directly. This allows the accesses to the architecture specific 'hw' structure to be removed. Move the mon_scale conversion into resctrl_arch_rmid_read(). mbm_bw_count() is updated to calculate bandwidth from bytes. Signed-off-by: James Morse Signed-off-by: Borislav Petkov Reviewed-by: Jamie Iles Reviewed-by: Shaopeng Tan Reviewed-by: Reinette Chatre Tested-by: Xin Hao Tested-by: Shaopeng Tan Tested-by: Cristian Marussi Link: https://lore.kernel.org/r/20220902154829.30399-22-james.morse@arm.com --- include/linux/resctrl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h index cb857f753322..0cf5b20c6ddf 100644 --- a/include/linux/resctrl.h +++ b/include/linux/resctrl.h @@ -227,7 +227,7 @@ void resctrl_offline_domain(struct rdt_resource *r, struct rdt_domain *d); * @d: domain that the counter should be read from. * @rmid: rmid of the counter to read. * @eventid: eventid to read, e.g. L3 occupancy. - * @val: result of the counter read in chunks. + * @val: result of the counter read in bytes. * * Call from process context on a CPU that belongs to domain @d. * -- cgit v1.2.3