函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\cpu\resctrl\core.c Create Date:2022-07-27 09:10:01
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：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.

函数原型：unsigned int delay_bw_map(unsigned long bw, struct rdt_resource *r)

返回类型：unsigned int

参数：

类型参数名称
unsigned longbw
struct rdt_resource *r
378  如果delay_linear则返回:MAX_MBA_BW减bw
381  pr_warn_once("Non Linear delay-bw map not supported but queried\n")
382  返回:default_ctrl
调用者
名称描述
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