RE: [PATCH v3 00/21] x86/resctrl: Make resctrl_arch_rmid_read() return values in bytes

tan.shaopeng@fujitsu.com posted 21 patches 4 years, 3 months ago
Only 0 patches received!
There is a newer version of this series
RE: [PATCH v3 00/21] x86/resctrl: Make resctrl_arch_rmid_read() return values in bytes
Posted by tan.shaopeng@fujitsu.com 4 years, 3 months ago
Hi James,

> Changes in this version? Expanded the commit message of patch 12, and made
> a few things static, as reported by the kbuild robot.
> 
> ---
> The aim of this series is to insert a split between the parts of the monitor code
> that the architecture must implement, and those that are part of the resctrl
> filesystem. The eventual aim is to move all filesystem parts out to live in
> /fs/resctrl, so that resctrl can be wired up for MPAM.
> 
> What's MPAM? See the cover letter of a previous series. [1]
> 
> The series adds domain online/offline callbacks to allow the filesystem to
> manage some of its structures itself, then moves all the 'mba_sc' behaviour to
> be part of the filesystem.
> This means another architecture doesn't need to provide an mbps_val array.
> As its all software, the resctrl filesystem should be able to do this without any
> help from the architecture code.
> 
> Finally __rmid_read() is refactored to be the API call that the architecture
> provides to read a counter value. All the hardware specific overflow detection,
> scaling and value correction should occur behind this helper.
> 
> 
> This series is based on v5.17-rc1, and can be retrieved from:
> git://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git
> mpam/resctrl_monitors_in_bytes/v3
> 
> [0] git://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git
> mpam/resctrl_merge_cdp/v7 [1]
> https://lore.kernel.org/lkml/20210728170637.25610-1-james.morse@arm.com
> /
> 
> [v1]
> https://lore.kernel.org/lkml/20210729223610.29373-1-james.morse@arm.com
> /
> [v2]
> https://lore.kernel.org/lkml/20211001160302.31189-1-james.morse@arm.com
> /
> 
> Thanks,
> 
> James Morse (21):
>   x86/resctrl: Kill off alloc_enabled
>   x86/resctrl: Merge mon_capable and mon_enabled
>   x86/resctrl: Add domain online callback for resctrl work
>   x86/resctrl: Group struct rdt_hw_domain cleanup
>   x86/resctrl: Add domain offline callback for resctrl work
>   x86/resctrl: Remove set_mba_sc()s control array re-initialisation
>   x86/resctrl: Create mba_sc configuration in the rdt_domain
>   x86/resctrl: Switch over to the resctrl mbps_val list
>   x86/resctrl: Remove architecture copy of mbps_val
>   x86/resctrl: Abstract and use supports_mba_mbps()
>   x86/resctrl: Allow update_mba_bw() to update controls directly
>   x86/resctrl: Calculate bandwidth from the previous __mon_event_count()
>     chunks
>   x86/recstrl: Add per-rmid arch private storage for overflow and chunks
>   x86/recstrl: Allow per-rmid arch private storage to be reset
>   x86/resctrl: Abstract __rmid_read()
>   x86/resctrl: Pass the required parameters into
>     resctrl_arch_rmid_read()
>   x86/resctrl: Move mbm_overflow_count() into resctrl_arch_rmid_read()
>   x86/resctrl: Move get_corrected_mbm_count() into
>     resctrl_arch_rmid_read()
>   x86/resctrl: Rename and change the units of resctrl_cqm_threshold
>   x86/resctrl: Add resctrl_rmid_realloc_limit to abstract x86's
>     boot_cpu_data
>   x86/resctrl: Make resctrl_arch_rmid_read() return values in bytes
> 
>  arch/x86/kernel/cpu/resctrl/core.c        | 117 ++++--------
>  arch/x86/kernel/cpu/resctrl/ctrlmondata.c |  75 +++++---
>  arch/x86/kernel/cpu/resctrl/internal.h    |  61 +++----
>  arch/x86/kernel/cpu/resctrl/monitor.c     | 211
> ++++++++++++++--------
>  arch/x86/kernel/cpu/resctrl/pseudo_lock.c |   2 +-
>  arch/x86/kernel/cpu/resctrl/rdtgroup.c    | 205
> +++++++++++++++++----
>  include/linux/resctrl.h                   |  62 ++++++-
>  7 files changed, 478 insertions(+), 255 deletions(-)
> 
> --
> 2.30.2

I tested this patch series on Intel(R) Xeon(R) Gold 6254 CPU with resctrl selftest.
It is no problem.

Reviewed-by: Shaopeng Tan <tan.shaopeng@fujitsu.com>
Tested-by: Shaopeng Tan <tan.shaopeng@fujitsu.com>
Re: [PATCH v3 00/21] x86/resctrl: Make resctrl_arch_rmid_read() return values in bytes
Posted by James Morse 4 years, 2 months ago
Hello!

On 3/15/22 08:16, tan.shaopeng@fujitsu.com wrote:
>> Changes in this version? Expanded the commit message of patch 12, and made
>> a few things static, as reported by the kbuild robot.

[...]

> I tested this patch series on Intel(R) Xeon(R) Gold 6254 CPU with resctrl selftest.
> It is no problem.
> 
> Reviewed-by: Shaopeng Tan <tan.shaopeng@fujitsu.com>
> Tested-by: Shaopeng Tan <tan.shaopeng@fujitsu.com>

Thanks!

James