diff options
Diffstat (limited to 'arch/x86/kernel/cpu/resctrl/monitor.c')
-rw-r--r-- | arch/x86/kernel/cpu/resctrl/monitor.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c index e91afe99b763..8d15568d7121 100644 --- a/arch/x86/kernel/cpu/resctrl/monitor.c +++ b/arch/x86/kernel/cpu/resctrl/monitor.c @@ -67,6 +67,11 @@ unsigned int rdt_mon_features; */ unsigned int resctrl_rmid_realloc_threshold; +/* + * This is the maximum value for the reallocation threshold, in bytes. + */ +unsigned int resctrl_rmid_realloc_limit; + #define CF(cf) ((unsigned long)(1048576 * (cf) + 0.5)) /* @@ -747,10 +752,10 @@ int rdt_get_mon_l3_config(struct rdt_resource *r) { unsigned int mbm_offset = boot_cpu_data.x86_cache_mbm_width_offset; struct rdt_hw_resource *hw_res = resctrl_to_arch_res(r); - unsigned int cl_size = boot_cpu_data.x86_cache_size; unsigned int threshold; int ret; + resctrl_rmid_realloc_limit = boot_cpu_data.x86_cache_size * 1024; hw_res->mon_scale = boot_cpu_data.x86_cache_occ_scale; r->num_rmid = boot_cpu_data.x86_cache_max_rmid + 1; hw_res->mbm_width = MBM_CNTR_WIDTH_BASE; @@ -767,7 +772,7 @@ int rdt_get_mon_l3_config(struct rdt_resource *r) * * For a 35MB LLC and 56 RMIDs, this is ~1.8% of the LLC. */ - threshold = cl_size * 1024 / r->num_rmid; + threshold = resctrl_rmid_realloc_limit / r->num_rmid; /* * Because num_rmid may not be a power of two, round the value |