From d80975e264c8f01518890f3d91ab5bada8fa7f5e Mon Sep 17 00:00:00 2001 From: James Morse Date: Fri, 2 Sep 2022 15:48:28 +0000 Subject: x86/resctrl: Add resctrl_rmid_realloc_limit to abstract x86's boot_cpu_data resctrl_rmid_realloc_threshold can be set by user-space. The maximum value is specified by the architecture. Currently max_threshold_occ_write() reads the maximum value from boot_cpu_data.x86_cache_size, which is not portable to another architecture. Add resctrl_rmid_realloc_limit to describe the maximum size in bytes that user-space can set the threshold to. 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/20220902154829.30399-21-james.morse@arm.com --- include/linux/resctrl.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/resctrl.h') diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h index 9995d043650a..cb857f753322 100644 --- a/include/linux/resctrl.h +++ b/include/linux/resctrl.h @@ -251,5 +251,6 @@ void resctrl_arch_reset_rmid(struct rdt_resource *r, struct rdt_domain *d, u32 rmid, enum resctrl_event_id eventid); extern unsigned int resctrl_rmid_realloc_threshold; +extern unsigned int resctrl_rmid_realloc_limit; #endif /* _RESCTRL_H */ -- cgit v1.2.3