mbox series

[v5,0/8] x86/resctrl: Miscellaneous resctrl features

Message ID 168564586603.527584.10518315376465080920.stgit@bmoger-ubuntu
Headers
Series x86/resctrl: Miscellaneous resctrl features |

Message

Moger, Babu June 1, 2023, 7 p.m. UTC 
  These series adds support few minor features.
1. Support assigning multiple tasks to control/mon groups in one command.
2. Add debug mount option for resctrl interface.
3. Add RMID and CLOSID in resctrl interface when mounted with debug option.
4. Moves the default control group creation during the mount instead of during init.
5. While doing these above changes, found that rftype flags needed some cleanup.
   They were named inconsistently. Re-arranged them much more cleanly now and added
   few comments.  Hope it can help future additions.

---
v5:
   Changes since v4:
   Moved the default group creation during mount instead of kernel init.
   Tried to address most of the comments on commit log. Added more context and details.
   Addressed feedback about the patch4. Removed the code changes and only kept the comments.
   I am ok to drop patch4. But I will wait for the comment on that.
   There were lots of comments. Hope I did not miss anything. Even if I missed, it is
   not intentional. 

v4: Changes since v3
    Addressed comments from Reinette and others.
    Removed newline requirement when adding tasks.
    Dropped one of the changes on flags. Kept the flag names mostly same.
    Changed the names of closid and rmid to ctrl_hw_id and mon_hw_id respectively.
    James had some concerns about adding these files. Addressed it by making these
    files x86 specific.
    Tried to address Reinette's comment on patch 7. But due to current code design
    I could not do it exact way. But changed it little bit to make it easy debug
    file additions in the future.  

v3: Changes since v2
    Still waiting for more comments. While waiting, addressed few comments from Fenghua.
    Added few more texts in the documentation about multiple tasks assignment feature.
    Added pid in last_cmd_status when applicable.
    Introduced static resctrl_debug to save the debug option.
    Few minor text changes.
  
v2: Changes since v1
  a. Removed the changes to add the task's threads automatically. It required
     book keeping to handle the failures and gets complicated. Removed that change
     for now.
  b. Added -o debug option to mount in debug mode(comment from Fenghua)
  c. Added debug files rmid and closid. Stephane wanted to rename them more
     generic to accommodate ARM. It kind of loses meaning if is renamed differently.
     Kept it same for now. Will change if he feels strong about it. 

v4: https://lore.kernel.org/lkml/168177435378.1758847.8317743523931859131.stgit@bmoger-ubuntu/
v3: https://lore.kernel.org/lkml/167778850105.1053859.14596357862185564029.stgit@bmoger-ubuntu/
v2: https://lore.kernel.org/lkml/167537433143.647488.9641864719195184123.stgit@bmoger-ubuntu/
v1: https://lore.kernel.org/lkml/167278351577.34228.12803395505584557101.stgit@bmoger-ubuntu/

Babu Moger (8):
      x86/resctrl: Add multiple tasks to the resctrl group at once
      x86/resctrl: Simplify rftype flag definitions
      x86/resctrl: Rename rftype flags for consistency
      x86/resctrl: Add comments on RFTYPE flags hierarchy
      x86/resctrl: Introduce "-o debug" mount option
      x86/resctrl: Display CLOSID and RMID for the resctrl groups
      x86/resctrl: Move default control group creation during mount
      x86/resctrl: Introduce RFTYPE_DEBUG flag


 Documentation/arch/x86/resctrl.rst     |  19 ++-
 arch/x86/kernel/cpu/resctrl/internal.h |  66 ++++++--
 arch/x86/kernel/cpu/resctrl/rdtgroup.c | 199 +++++++++++++++++--------
 3 files changed, 212 insertions(+), 72 deletions(-)

--

Comments

Moger, Babu June 27, 2023, 2:26 p.m. UTC | #1 
Gentle ping, Any comments on this series.
Thanks
Babu

> -----Original Message-----
> From: Moger, Babu <Babu.Moger@amd.com>
> Sent: Thursday, June 1, 2023 2:01 PM
> 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; Moger,
> Babu <Babu.Moger@amd.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; pawan.kumar.gupta@linux.intel.com;
> jarkko@kernel.org; adrian.hunter@intel.com; quic_jiles@quicinc.com;
> peternewman@google.com; Moger, Babu <Babu.Moger@amd.com>
> Subject: [PATCH v5 0/8] x86/resctrl: Miscellaneous resctrl features
> 
> These series adds support few minor features.
> 1. Support assigning multiple tasks to control/mon groups in one command.
> 2. Add debug mount option for resctrl interface.
> 3. Add RMID and CLOSID in resctrl interface when mounted with debug option.
> 4. Moves the default control group creation during the mount instead of during
> init.
> 5. While doing these above changes, found that rftype flags needed some
> cleanup.
>    They were named inconsistently. Re-arranged them much more cleanly now
> and added
>    few comments.  Hope it can help future additions.
> 
> ---
> v5:
>    Changes since v4:
>    Moved the default group creation during mount instead of kernel init.
>    Tried to address most of the comments on commit log. Added more context
> and details.
>    Addressed feedback about the patch4. Removed the code changes and only
> kept the comments.
>    I am ok to drop patch4. But I will wait for the comment on that.
>    There were lots of comments. Hope I did not miss anything. Even if I missed, it
> is
>    not intentional.
> 
> v4: Changes since v3
>     Addressed comments from Reinette and others.
>     Removed newline requirement when adding tasks.
>     Dropped one of the changes on flags. Kept the flag names mostly same.
>     Changed the names of closid and rmid to ctrl_hw_id and mon_hw_id
> respectively.
>     James had some concerns about adding these files. Addressed it by making
> these
>     files x86 specific.
>     Tried to address Reinette's comment on patch 7. But due to current code
> design
>     I could not do it exact way. But changed it little bit to make it easy debug
>     file additions in the future.
> 
> v3: Changes since v2
>     Still waiting for more comments. While waiting, addressed few comments
> from Fenghua.
>     Added few more texts in the documentation about multiple tasks assignment
> feature.
>     Added pid in last_cmd_status when applicable.
>     Introduced static resctrl_debug to save the debug option.
>     Few minor text changes.
> 
> v2: Changes since v1
>   a. Removed the changes to add the task's threads automatically. It required
>      book keeping to handle the failures and gets complicated. Removed that
> change
>      for now.
>   b. Added -o debug option to mount in debug mode(comment from Fenghua)
>   c. Added debug files rmid and closid. Stephane wanted to rename them more
>      generic to accommodate ARM. It kind of loses meaning if is renamed
> differently.
>      Kept it same for now. Will change if he feels strong about it.
> 
> v4:
> https://lore.kernel.org/lkml/168177435378.1758847.8317743523931859131.stg
> it@bmoger-ubuntu/
> v3:
> https://lore.kernel.org/lkml/167778850105.1053859.14596357862185564029.st
> git@bmoger-ubuntu/
> v2:
> https://lore.kernel.org/lkml/167537433143.647488.9641864719195184123.stgit
> @bmoger-ubuntu/
> v1:
> https://lore.kernel.org/lkml/167278351577.34228.12803395505584557101.stgit
> @bmoger-ubuntu/
> 
> Babu Moger (8):
>       x86/resctrl: Add multiple tasks to the resctrl group at once
>       x86/resctrl: Simplify rftype flag definitions
>       x86/resctrl: Rename rftype flags for consistency
>       x86/resctrl: Add comments on RFTYPE flags hierarchy
>       x86/resctrl: Introduce "-o debug" mount option
>       x86/resctrl: Display CLOSID and RMID for the resctrl groups
>       x86/resctrl: Move default control group creation during mount
>       x86/resctrl: Introduce RFTYPE_DEBUG flag
> 
> 
>  Documentation/arch/x86/resctrl.rst     |  19 ++-
>  arch/x86/kernel/cpu/resctrl/internal.h |  66 ++++++--
> arch/x86/kernel/cpu/resctrl/rdtgroup.c | 199 +++++++++++++++++--------
>  3 files changed, 212 insertions(+), 72 deletions(-)
> 
> --
Shaopeng Tan (Fujitsu) June 28, 2023, 2:13 a.m. UTC | #2 
Hi Babu,

I reviewed this patch series and it looks fine.
I tested these features and ran the selftests/resctrl test set,
and there is no problem.

<Reviewed-by:tan.shaopeng@jp.fujitsu.com>
<Tested-by:tan.shaopeng@jp.fujitsu.com>

Best regards,
Shaopeng TAN
Moger, Babu July 11, 2023, 4:34 p.m. UTC | #3 
On 6/27/23 21:13, Shaopeng Tan (Fujitsu) wrote:
> Hi Babu,
> 
> I reviewed this patch series and it looks fine.
> I tested these features and ran the selftests/resctrl test set,
> and there is no problem.
> 
> <Reviewed-by:tan.shaopeng@jp.fujitsu.com>
> <Tested-by:tan.shaopeng@jp.fujitsu.com>
> 

Thanks Tan. I will add Reviewed and Tested by to the patches that are final.