Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\cpu\resctrl\core.c Create Date:2022-07-28 08:09:57
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:Map the memory b/w percentage value to delay values* that can be written to QOS_MSRs.* There are currently no SKUs which support non linear delay values.

Proto:unsigned int delay_bw_map(unsigned long bw, struct rdt_resource *r)

Type:unsigned int

Parameter:

TypeParameterName
unsigned longbw
struct rdt_resource *r
378  If delay_linear Then Return MAX_MBA_BW - bw
381  pr_warn_once("Non Linear delay-bw map not supported but queried\n")
382  Return default_ctrl
Caller
NameDescribe
mba_wrmsr_intel
update_mba_bwFeedback loop for MBA software controller (mba_sc)* mba_sc is a feedback loop where we periodically read MBM counters and* adjust the bandwidth percentage values via the IA32_MBA_THRTL_MSRs so* that:* current bandwdith(cur_bw) < user specified