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authorJames Morse <james.morse@arm.com>2022-09-02 18:48:28 +0300
committerBorislav Petkov <bp@suse.de>2022-09-23 15:24:16 +0300
commitd80975e264c8f01518890f3d91ab5bada8fa7f5e (patch)
treeac727af5ee8384f3e88b6fc0252932233dc0e92b /include/linux/resctrl.h
parentae2328b52962531c2d7c6b531022a3eb2d680f17 (diff)
downloadlinux-d80975e264c8f01518890f3d91ab5bada8fa7f5e.tar.xz
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 <james.morse@arm.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Jamie Iles <quic_jiles@quicinc.com> Reviewed-by: Shaopeng Tan <tan.shaopeng@fujitsu.com> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Tested-by: Xin Hao <xhao@linux.alibaba.com> Tested-by: Shaopeng Tan <tan.shaopeng@fujitsu.com> Tested-by: Cristian Marussi <cristian.marussi@arm.com> Link: https://lore.kernel.org/r/20220902154829.30399-21-james.morse@arm.com
Diffstat (limited to 'include/linux/resctrl.h')
-rw-r--r--include/linux/resctrl.h1
1 files changed, 1 insertions, 0 deletions
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 */