Message ID | 166990902305.17806.9650262646704189221.stgit@bmoger-ubuntu |
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State | New |
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Thu, 1 Dec 2022 09:37:03 -0600 Subject: [PATCH v9 09/13] x86/resctrl: Add sysfs interface to read mbm_local_bytes_config From: Babu Moger <babu.moger@amd.com> To: <corbet@lwn.net>, <reinette.chatre@intel.com>, <tglx@linutronix.de>, <mingo@redhat.com>, <bp@alien8.de> CC: <fenghua.yu@intel.com>, <dave.hansen@linux.intel.com>, <x86@kernel.org>, <hpa@zytor.com>, <paulmck@kernel.org>, <akpm@linux-foundation.org>, <quic_neeraju@quicinc.com>, <rdunlap@infradead.org>, <damien.lemoal@opensource.wdc.com>, <songmuchun@bytedance.com>, <peterz@infradead.org>, <jpoimboe@kernel.org>, <pbonzini@redhat.com>, <babu.moger@amd.com>, <chang.seok.bae@intel.com>, <pawan.kumar.gupta@linux.intel.com>, <jmattson@google.com>, <daniel.sneddon@linux.intel.com>, <sandipan.das@amd.com>, <tony.luck@intel.com>, <james.morse@arm.com>, <linux-doc@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <bagasdotme@gmail.com>, <eranian@google.com>, <christophe.leroy@csgroup.eu>, <pawan.kumar.gupta@linux.intel.com>, <jarkko@kernel.org>, <adrian.hunter@intel.com>, <quic_jiles@quicinc.com>, <peternewman@google.com> Date: Thu, 1 Dec 2022 09:37:03 -0600 Message-ID: <166990902305.17806.9650262646704189221.stgit@bmoger-ubuntu> In-Reply-To: <166990882621.17806.16780480657453071426.stgit@bmoger-ubuntu> References: <166990882621.17806.16780480657453071426.stgit@bmoger-ubuntu> User-Agent: StGit/1.1.dev103+g5369f4c MIME-Version: 1.0 Content-Type: text/plain; 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Support for AMD QoS new features
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Commit Message
Moger, Babu
Dec. 1, 2022, 3:37 p.m. UTC
The current event configuration can be viewed by the user by reading
the configuration file /sys/fs/resctrl/info/L3_MON/mbm_local_bytes_config.
The event configuration settings are domain specific and will affect
all the CPUs in the domain.
Following are the types of events supported:
==== ===========================================================
Bits Description
==== ===========================================================
6 Dirty Victims from the QOS domain to all types of memory
5 Reads to slow memory in the non-local NUMA domain
4 Reads to slow memory in the local NUMA domain
3 Non-temporal writes to non-local NUMA domain
2 Non-temporal writes to local NUMA domain
1 Reads to memory in the non-local NUMA domain
0 Reads to memory in the local NUMA domain
==== ===========================================================
By default, the mbm_local_bytes_config is set to 0x15 to count all the
local event types.
For example:
$cat /sys/fs/resctrl/info/L3_MON/mbm_local_bytes_config
0=0x15;1=0x15;2=0x15;3=0x15
In this case, the event mbm_local_bytes is currently configured with
0x15 on domains 0 to 3.
Signed-off-by: Babu Moger <babu.moger@amd.com>
---
arch/x86/kernel/cpu/resctrl/monitor.c | 4 +++-
arch/x86/kernel/cpu/resctrl/rdtgroup.c | 16 ++++++++++++++++
2 files changed, 19 insertions(+), 1 deletion(-)
Comments
Hi Babu, Same as other commits the subject can be shortened: x86/resctrl: Add interface to read mbm_local_bytes_config On 12/1/2022 7:37 AM, Babu Moger wrote: > The current event configuration can be viewed by the user by reading > the configuration file /sys/fs/resctrl/info/L3_MON/mbm_local_bytes_config. > The event configuration settings are domain specific and will affect > all the CPUs in the domain. > > Following are the types of events supported: > ==== =========================================================== > Bits Description > ==== =========================================================== > 6 Dirty Victims from the QOS domain to all types of memory > 5 Reads to slow memory in the non-local NUMA domain > 4 Reads to slow memory in the local NUMA domain > 3 Non-temporal writes to non-local NUMA domain > 2 Non-temporal writes to local NUMA domain > 1 Reads to memory in the non-local NUMA domain > 0 Reads to memory in the local NUMA domain > ==== =========================================================== > > By default, the mbm_local_bytes_config is set to 0x15 to count all the > local event types. > > For example: > $cat /sys/fs/resctrl/info/L3_MON/mbm_local_bytes_config > 0=0x15;1=0x15;2=0x15;3=0x15 > > In this case, the event mbm_local_bytes is currently configured with > 0x15 on domains 0 to 3. "currently" can be removed > > Signed-off-by: Babu Moger <babu.moger@amd.com> > --- > arch/x86/kernel/cpu/resctrl/monitor.c | 4 +++- > arch/x86/kernel/cpu/resctrl/rdtgroup.c | 16 ++++++++++++++++ > 2 files changed, 19 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c > index 2afddebc8636..7c8a3a745041 100644 > --- a/arch/x86/kernel/cpu/resctrl/monitor.c > +++ b/arch/x86/kernel/cpu/resctrl/monitor.c > @@ -788,8 +788,10 @@ int __init rdt_get_mon_l3_config(struct rdt_resource *r) > mbm_total_event.configurable = true; > mbm_config_rftype_init("mbm_total_bytes_config"); > } > - if (rdt_cpu_has(X86_FEATURE_CQM_MBM_LOCAL)) > + if (rdt_cpu_has(X86_FEATURE_CQM_MBM_LOCAL)) { > mbm_local_event.configurable = true; > + mbm_config_rftype_init("mbm_local_bytes_config"); > + } > } > > l3_mon_evt_init(r); > diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c > index e93b1c206116..580f3cce19e2 100644 > --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c > +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c > @@ -1507,6 +1507,16 @@ static int mbm_total_bytes_config_show(struct kernfs_open_file *of, > return 0; > } > > +static int mbm_local_bytes_config_show(struct kernfs_open_file *of, > + struct seq_file *seq, void *v) > +{ > + struct rdt_resource *r = of->kn->parent->priv; > + > + mbm_config_show(seq, r, QOS_L3_MBM_LOCAL_EVENT_ID); > + > + return 0; > +} > + > /* rdtgroup information files for one cache resource. */ > static struct rftype res_common_files[] = { > { > @@ -1611,6 +1621,12 @@ static struct rftype res_common_files[] = { > .kf_ops = &rdtgroup_kf_single_ops, > .seq_show = mbm_total_bytes_config_show, > }, > + { > + .name = "mbm_local_bytes_config", > + .mode = 0444, > + .kf_ops = &rdtgroup_kf_single_ops, > + .seq_show = mbm_local_bytes_config_show, > + }, > { > .name = "cpus", > .mode = 0644, > > With the subject and changelog changes addressed: Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Reinette
[AMD Official Use Only - General] Hi Reinette, > -----Original Message----- > From: Reinette Chatre <reinette.chatre@intel.com> > Sent: Thursday, December 15, 2022 11:43 AM > To: Moger, Babu <Babu.Moger@amd.com>; corbet@lwn.net; > tglx@linutronix.de; mingo@redhat.com; bp@alien8.de > Cc: fenghua.yu@intel.com; dave.hansen@linux.intel.com; x86@kernel.org; > hpa@zytor.com; paulmck@kernel.org; akpm@linux-foundation.org; > quic_neeraju@quicinc.com; rdunlap@infradead.org; > damien.lemoal@opensource.wdc.com; songmuchun@bytedance.com; > peterz@infradead.org; jpoimboe@kernel.org; pbonzini@redhat.com; > chang.seok.bae@intel.com; pawan.kumar.gupta@linux.intel.com; > jmattson@google.com; daniel.sneddon@linux.intel.com; Das1, Sandipan > <Sandipan.Das@amd.com>; tony.luck@intel.com; james.morse@arm.com; > linux-doc@vger.kernel.org; linux-kernel@vger.kernel.org; > bagasdotme@gmail.com; eranian@google.com; christophe.leroy@csgroup.eu; > jarkko@kernel.org; adrian.hunter@intel.com; quic_jiles@quicinc.com; > peternewman@google.com > Subject: Re: [PATCH v9 09/13] x86/resctrl: Add sysfs interface to read > mbm_local_bytes_config > > Hi Babu, > > Same as other commits the subject can be shortened: > x86/resctrl: Add interface to read mbm_local_bytes_config Sure. > > On 12/1/2022 7:37 AM, Babu Moger wrote: > > The current event configuration can be viewed by the user by reading > > the configuration file /sys/fs/resctrl/info/L3_MON/mbm_local_bytes_config. > > The event configuration settings are domain specific and will affect > > all the CPUs in the domain. > > > > Following are the types of events supported: > > ==== > =========================================================== > > Bits Description > > ==== > =========================================================== > > 6 Dirty Victims from the QOS domain to all types of memory > > 5 Reads to slow memory in the non-local NUMA domain > > 4 Reads to slow memory in the local NUMA domain > > 3 Non-temporal writes to non-local NUMA domain > > 2 Non-temporal writes to local NUMA domain > > 1 Reads to memory in the non-local NUMA domain > > 0 Reads to memory in the local NUMA domain > > ==== > =========================================================== > > > > By default, the mbm_local_bytes_config is set to 0x15 to count all the > > local event types. > > > > For example: > > $cat /sys/fs/resctrl/info/L3_MON/mbm_local_bytes_config > > 0=0x15;1=0x15;2=0x15;3=0x15 > > > > In this case, the event mbm_local_bytes is currently configured with > > 0x15 on domains 0 to 3. > > "currently" can be removed Sure. > > > > > Signed-off-by: Babu Moger <babu.moger@amd.com> > > --- > > arch/x86/kernel/cpu/resctrl/monitor.c | 4 +++- > > arch/x86/kernel/cpu/resctrl/rdtgroup.c | 16 ++++++++++++++++ > > 2 files changed, 19 insertions(+), 1 deletion(-) > > > > diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c > > b/arch/x86/kernel/cpu/resctrl/monitor.c > > index 2afddebc8636..7c8a3a745041 100644 > > --- a/arch/x86/kernel/cpu/resctrl/monitor.c > > +++ b/arch/x86/kernel/cpu/resctrl/monitor.c > > @@ -788,8 +788,10 @@ int __init rdt_get_mon_l3_config(struct > rdt_resource *r) > > mbm_total_event.configurable = true; > > mbm_config_rftype_init("mbm_total_bytes_config"); > > } > > - if (rdt_cpu_has(X86_FEATURE_CQM_MBM_LOCAL)) > > + if (rdt_cpu_has(X86_FEATURE_CQM_MBM_LOCAL)) { > > mbm_local_event.configurable = true; > > + mbm_config_rftype_init("mbm_local_bytes_config"); > > + } > > } > > > > l3_mon_evt_init(r); > > diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c > > b/arch/x86/kernel/cpu/resctrl/rdtgroup.c > > index e93b1c206116..580f3cce19e2 100644 > > --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c > > +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c > > @@ -1507,6 +1507,16 @@ static int mbm_total_bytes_config_show(struct > kernfs_open_file *of, > > return 0; > > } > > > > +static int mbm_local_bytes_config_show(struct kernfs_open_file *of, > > + struct seq_file *seq, void *v) { > > + struct rdt_resource *r = of->kn->parent->priv; > > + > > + mbm_config_show(seq, r, QOS_L3_MBM_LOCAL_EVENT_ID); > > + > > + return 0; > > +} > > + > > /* rdtgroup information files for one cache resource. */ static > > struct rftype res_common_files[] = { > > { > > @@ -1611,6 +1621,12 @@ static struct rftype res_common_files[] = { > > .kf_ops = &rdtgroup_kf_single_ops, > > .seq_show = mbm_total_bytes_config_show, > > }, > > + { > > + .name = "mbm_local_bytes_config", > > + .mode = 0444, > > + .kf_ops = &rdtgroup_kf_single_ops, > > + .seq_show = mbm_local_bytes_config_show, > > + }, > > { > > .name = "cpus", > > .mode = 0644, > > > > > > With the subject and changelog changes addressed: > > Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Thanks Babu > > Reinette
diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c index 2afddebc8636..7c8a3a745041 100644 --- a/arch/x86/kernel/cpu/resctrl/monitor.c +++ b/arch/x86/kernel/cpu/resctrl/monitor.c @@ -788,8 +788,10 @@ int __init rdt_get_mon_l3_config(struct rdt_resource *r) mbm_total_event.configurable = true; mbm_config_rftype_init("mbm_total_bytes_config"); } - if (rdt_cpu_has(X86_FEATURE_CQM_MBM_LOCAL)) + if (rdt_cpu_has(X86_FEATURE_CQM_MBM_LOCAL)) { mbm_local_event.configurable = true; + mbm_config_rftype_init("mbm_local_bytes_config"); + } } l3_mon_evt_init(r); diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c index e93b1c206116..580f3cce19e2 100644 --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c @@ -1507,6 +1507,16 @@ static int mbm_total_bytes_config_show(struct kernfs_open_file *of, return 0; } +static int mbm_local_bytes_config_show(struct kernfs_open_file *of, + struct seq_file *seq, void *v) +{ + struct rdt_resource *r = of->kn->parent->priv; + + mbm_config_show(seq, r, QOS_L3_MBM_LOCAL_EVENT_ID); + + return 0; +} + /* rdtgroup information files for one cache resource. */ static struct rftype res_common_files[] = { { @@ -1611,6 +1621,12 @@ static struct rftype res_common_files[] = { .kf_ops = &rdtgroup_kf_single_ops, .seq_show = mbm_total_bytes_config_show, }, + { + .name = "mbm_local_bytes_config", + .mode = 0444, + .kf_ops = &rdtgroup_kf_single_ops, + .seq_show = mbm_local_bytes_config_show, + }, { .name = "cpus", .mode = 0644,