nvdimm.lists.linux.dev archive mirror
 help / color / mirror / Atom feed
From: David Gibson <david@gibson.dropbear.id.au>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au,
	Nathan Lynch <nathanl@linux.ibm.com>,
	Daniel Henrique Barboza <danielhb413@gmail.com>,
	nvdimm@lists.linux.dev, dan.j.williams@intel.com
Subject: Re: [PATCH v4 4/7] powerpc/pseries: Consolidate DLPAR NUMA distance update
Date: Thu, 24 Jun 2021 13:11:32 +1000	[thread overview]
Message-ID: <YNP35EN3ioj5q6AW@yekko> (raw)
In-Reply-To: <20210617165105.574178-5-aneesh.kumar@linux.ibm.com>

[-- Attachment #1: Type: text/plain, Size: 4131 bytes --]

On Thu, Jun 17, 2021 at 10:21:02PM +0530, Aneesh Kumar K.V wrote:
> The associativity details of the newly added resourced are collected from
> the hypervisor via "ibm,configure-connector" rtas call. Update the numa
> distance details of the newly added numa node after the above call. In
> later patch we will remove updating NUMA distance when we are looking
> for node id from associativity array.
> 
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>

I think this patch and the next would be easier to review if merged
together.  That would make the fact that this is (half of) a code
motion clearer.

> ---
>  arch/powerpc/mm/numa.c                        | 41 +++++++++++++++++++
>  arch/powerpc/platforms/pseries/hotplug-cpu.c  |  2 +
>  .../platforms/pseries/hotplug-memory.c        |  2 +
>  arch/powerpc/platforms/pseries/pseries.h      |  1 +
>  4 files changed, 46 insertions(+)
> 
> diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
> index 0ec16999beef..645a95e3a7ea 100644
> --- a/arch/powerpc/mm/numa.c
> +++ b/arch/powerpc/mm/numa.c
> @@ -287,6 +287,47 @@ int of_node_to_nid(struct device_node *device)
>  }
>  EXPORT_SYMBOL(of_node_to_nid);
>  
> +static void __initialize_form1_numa_distance(const __be32 *associativity)
> +{
> +	int i, nid;
> +
> +	if (of_read_number(associativity, 1) >= primary_domain_index) {
> +		nid = of_read_number(&associativity[primary_domain_index], 1);
> +
> +		for (i = 0; i < max_domain_index; i++) {
> +			const __be32 *entry;
> +
> +			entry = &associativity[be32_to_cpu(distance_ref_points[i])];
> +			distance_lookup_table[nid][i] = of_read_number(entry, 1);
> +		}
> +	}
> +}
> +
> +static void initialize_form1_numa_distance(struct device_node *node)
> +{
> +	const __be32 *associativity;
> +
> +	associativity = of_get_associativity(node);
> +	if (!associativity)
> +		return;
> +
> +	__initialize_form1_numa_distance(associativity);
> +	return;
> +}
> +
> +/*
> + * Used to update distance information w.r.t newly added node.
> + */
> +void update_numa_distance(struct device_node *node)
> +{
> +	if (affinity_form == FORM0_AFFINITY)
> +		return;
> +	else if (affinity_form == FORM1_AFFINITY) {
> +		initialize_form1_numa_distance(node);
> +		return;
> +	}
> +}
> +
>  static int __init find_primary_domain_index(void)
>  {
>  	int index;
> diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
> index 7e970f81d8ff..778b6ab35f0d 100644
> --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
> +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
> @@ -498,6 +498,8 @@ static ssize_t dlpar_cpu_add(u32 drc_index)
>  		return saved_rc;
>  	}
>  
> +	update_numa_distance(dn);
> +
>  	rc = dlpar_online_cpu(dn);
>  	if (rc) {
>  		saved_rc = rc;
> diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
> index 8377f1f7c78e..0e602c3b01ea 100644
> --- a/arch/powerpc/platforms/pseries/hotplug-memory.c
> +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
> @@ -180,6 +180,8 @@ static int update_lmb_associativity_index(struct drmem_lmb *lmb)
>  		return -ENODEV;
>  	}
>  
> +	update_numa_distance(lmb_node);
> +
>  	dr_node = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");
>  	if (!dr_node) {
>  		dlpar_free_cc_nodes(lmb_node);
> diff --git a/arch/powerpc/platforms/pseries/pseries.h b/arch/powerpc/platforms/pseries/pseries.h
> index 1f051a786fb3..663a0859cf13 100644
> --- a/arch/powerpc/platforms/pseries/pseries.h
> +++ b/arch/powerpc/platforms/pseries/pseries.h
> @@ -113,4 +113,5 @@ extern u32 pseries_security_flavor;
>  void pseries_setup_security_mitigations(void);
>  void pseries_lpar_read_hblkrm_characteristics(void);
>  
> +void update_numa_distance(struct device_node *node);
>  #endif /* _PSERIES_PSERIES_H */

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]

  reply	other threads:[~2021-06-24  3:17 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-17 16:50 [PATCH v4 0/7] Add support for FORM2 associativity Aneesh Kumar K.V
2021-06-17 16:50 ` [PATCH v4 1/7] powerpc/pseries: rename min_common_depth to primary_domain_index Aneesh Kumar K.V
2021-06-24  1:46   ` David Gibson
2021-06-17 16:51 ` [PATCH v4 2/7] powerpc/pseries: rename distance_ref_points_depth to max_associativity_domain_index Aneesh Kumar K.V
2021-06-24  3:10   ` David Gibson
2021-06-17 16:51 ` [PATCH v4 3/7] powerpc/pseries: Rename TYPE1_AFFINITY to FORM1_AFFINITY Aneesh Kumar K.V
2021-06-17 16:51 ` [PATCH v4 4/7] powerpc/pseries: Consolidate DLPAR NUMA distance update Aneesh Kumar K.V
2021-06-24  3:11   ` David Gibson [this message]
2021-06-17 16:51 ` [PATCH v4 5/7] powerpc/pseries: Consolidate NUMA distance update during boot Aneesh Kumar K.V
2021-06-17 16:51 ` [PATCH v4 6/7] powerpc/pseries: Add a helper for form1 cpu distance Aneesh Kumar K.V
2021-06-17 16:51 ` [PATCH v4 7/7] powerpc/pseries: Add support for FORM2 associativity Aneesh Kumar K.V
2021-06-21 22:02   ` Daniel Henrique Barboza
2021-06-22 12:07     ` Aneesh Kumar K.V
2021-06-22 16:04       ` Daniel Henrique Barboza
2021-06-24  3:08   ` David Gibson
2021-06-24  8:20     ` Aneesh Kumar K.V
2021-06-28  6:18       ` David Gibson
2021-06-28 15:04         ` Aneesh Kumar K.V
2021-06-24 10:33   ` Laurent Dufour
2021-06-24 10:55     ` Aneesh Kumar K.V

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=YNP35EN3ioj5q6AW@yekko \
    --to=david@gibson.dropbear.id.au \
    --cc=aneesh.kumar@linux.ibm.com \
    --cc=dan.j.williams@intel.com \
    --cc=danielhb413@gmail.com \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=mpe@ellerman.id.au \
    --cc=nathanl@linux.ibm.com \
    --cc=nvdimm@lists.linux.dev \
    --subject='Re: [PATCH v4 4/7] powerpc/pseries: Consolidate DLPAR NUMA distance update' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).