Messages in this thread | | | From | "" <> | Subject | RE: [PATCH v4 00/21] x86/resctrl: Make resctrl_arch_rmid_read() return values in bytes | Date | Mon, 18 Apr 2022 08:09:49 +0000 |
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Hi James,
> -----Original Message----- > From: James Morse <james.morse@arm.com> > Sent: Tuesday, April 12, 2022 9:44 PM > To: x86@kernel.org; linux-kernel@vger.kernel.org > Cc: Fenghua Yu <fenghua.yu@intel.com>; Reinette Chatre > <reinette.chatre@intel.com>; Thomas Gleixner <tglx@linutronix.de>; Ingo > Molnar <mingo@redhat.com>; Borislav Petkov <bp@alien8.de>; H Peter > Anvin <hpa@zytor.com>; Babu Moger <Babu.Moger@amd.com>; James > Morse <james.morse@arm.com>; shameerali.kolothum.thodi@huawei.com; D > Scott Phillips OS <scott@os.amperecomputing.com>; lcherian@marvell.com; > bobo.shaobowang@huawei.com; Tan, Shaopeng/譚 紹鵬 > <tan.shaopeng@fujitsu.com>; Jamie Iles <quic_jiles@quicinc.com>; Cristian > Marussi <cristian.marussi@arm.com>; Xin Hao <xhao@linux.alibaba.com>; > xingxin.hx@openanolis.org; baolin.wang@linux.alibaba.com > Subject: [PATCH v4 00/21] x86/resctrl: Make resctrl_arch_rmid_read() return > values in bytes > > Changes in this version? > * Fixed the problems with mon_capable preventing mbps_val[] being > allocated > on the correct resources. > * Fixed initialisation of ctrl_val[] to ~0 when mba_sc is selected. > * Assorted style fixes. > > --- > 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 v5.18-rc1, and can be retrieved from: > git://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git > mpam/resctrl_monitors_in_bytes/v4 > > [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 > / > [v3] > https://lore.kernel.org/lkml/20220217182110.7176-1-james.morse@arm.com/ > > > 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/resctrl: Add per-rmid arch private storage for overflow and chunks > x86/resctrl: 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 | 224 > ++++++++++++++-------- > arch/x86/kernel/cpu/resctrl/pseudo_lock.c | 2 +- > arch/x86/kernel/cpu/resctrl/rdtgroup.c | 212 > ++++++++++++++++---- > include/linux/resctrl.h | 64 ++++++- > 7 files changed, 493 insertions(+), 262 deletions(-) > > -- > 2.30.2 I tested this patch series on Intel(R) Xeon(R) Gold 6254 CPU with resctrl selftest. It is no problem.
Tested-by: Shaopeng Tan <tan.shaopeng@fujitsu.com>
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