From: David Hildenbrand <david@redhat.com>
To: Dan Williams <dan.j.williams@intel.com>
Cc: Linux MM <linux-mm@kvack.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-ia64@vger.kernel.org,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
linux-s390 <linux-s390@vger.kernel.org>,
Linux-sh <linux-sh@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@suse.com>,
Oscar Salvador <osalvador@suse.com>,
Pavel Tatashin <pasha.tatashin@soleen.com>,
Wei Yang <richard.weiyang@gmail.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>, Qian Cai <cai@lca.pw>,
Arun KS <arunks@codeaurora.org>,
Mathieu Malaterre <malat@debian.org>
Subject: Re: [PATCH v2 5/8] mm/memory_hotplug: Drop MHP_MEMBLOCK_API
Date: Tue, 7 May 2019 23:24:37 +0200 [thread overview]
Message-ID: <d83fec16-ceff-2f6f-72e1-48996187d5ba@redhat.com> (raw)
In-Reply-To: <CAPcyv4ge1pSOopfHof4USn=7Skc-UV4Xhd_s=h+M9VXSp_p1XQ@mail.gmail.com>
On 07.05.19 23:19, Dan Williams wrote:
> On Tue, May 7, 2019 at 11:38 AM David Hildenbrand <david@redhat.com> wrote:
>>
>> No longer needed, the callers of arch_add_memory() can handle this
>> manually.
>>
>> Cc: Andrew Morton <akpm@linux-foundation.org>
>> Cc: David Hildenbrand <david@redhat.com>
>> Cc: Michal Hocko <mhocko@suse.com>
>> Cc: Oscar Salvador <osalvador@suse.com>
>> Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
>> Cc: Wei Yang <richard.weiyang@gmail.com>
>> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
>> Cc: Qian Cai <cai@lca.pw>
>> Cc: Arun KS <arunks@codeaurora.org>
>> Cc: Mathieu Malaterre <malat@debian.org>
>> Signed-off-by: David Hildenbrand <david@redhat.com>
>> ---
>> include/linux/memory_hotplug.h | 8 --------
>> mm/memory_hotplug.c | 9 +++------
>> 2 files changed, 3 insertions(+), 14 deletions(-)
>>
>> diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
>> index 2d4de313926d..2f1f87e13baa 100644
>> --- a/include/linux/memory_hotplug.h
>> +++ b/include/linux/memory_hotplug.h
>> @@ -128,14 +128,6 @@ extern void arch_remove_memory(int nid, u64 start, u64 size,
>> extern void __remove_pages(struct zone *zone, unsigned long start_pfn,
>> unsigned long nr_pages, struct vmem_altmap *altmap);
>>
>> -/*
>> - * Do we want sysfs memblock files created. This will allow userspace to online
>> - * and offline memory explicitly. Lack of this bit means that the caller has to
>> - * call move_pfn_range_to_zone to finish the initialization.
>> - */
>> -
>> -#define MHP_MEMBLOCK_API (1<<0)
>> -
>> /* reasonably generic interface to expand the physical pages */
>> extern int __add_pages(int nid, unsigned long start_pfn, unsigned long nr_pages,
>> struct mhp_restrictions *restrictions);
>> diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
>> index e1637c8a0723..107f72952347 100644
>> --- a/mm/memory_hotplug.c
>> +++ b/mm/memory_hotplug.c
>> @@ -250,7 +250,7 @@ void __init register_page_bootmem_info_node(struct pglist_data *pgdat)
>> #endif /* CONFIG_HAVE_BOOTMEM_INFO_NODE */
>>
>> static int __meminit __add_section(int nid, unsigned long phys_start_pfn,
>> - struct vmem_altmap *altmap, bool want_memblock)
>> + struct vmem_altmap *altmap)
>> {
>> int ret;
>>
>> @@ -293,8 +293,7 @@ int __ref __add_pages(int nid, unsigned long phys_start_pfn,
>> }
>>
>> for (i = start_sec; i <= end_sec; i++) {
>> - err = __add_section(nid, section_nr_to_pfn(i), altmap,
>> - restrictions->flags & MHP_MEMBLOCK_API);
>> + err = __add_section(nid, section_nr_to_pfn(i), altmap);
>>
>> /*
>> * EEXIST is finally dealt with by ioresource collision
>> @@ -1066,9 +1065,7 @@ static int online_memory_block(struct memory_block *mem, void *arg)
>> */
>> int __ref add_memory_resource(int nid, struct resource *res)
>> {
>> - struct mhp_restrictions restrictions = {
>> - .flags = MHP_MEMBLOCK_API,
>> - };
>> + struct mhp_restrictions restrictions = {};
>
> With mhp_restrictions.flags no longer needed, can we drop
> mhp_restrictions and just go back to a plain @altmap argument?
>
Oscar wants to use it to configure from where to allocate vmemmaps. That
was the original driver behind it.
--
Thanks,
David / dhildenb
next prev parent reply other threads:[~2019-05-07 21:24 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-07 18:37 [PATCH v2 0/8] mm/memory_hotplug: Factor out memory block device handling David Hildenbrand
2019-05-07 18:37 ` [PATCH v2 1/8] mm/memory_hotplug: Simplify and fix check_hotplug_memory_range() David Hildenbrand
2019-05-07 20:38 ` Dan Williams
2019-05-09 12:23 ` Wei Yang
2019-05-07 18:37 ` [PATCH v2 2/8] s390x/mm: Implement arch_remove_memory() David Hildenbrand
2019-05-07 20:46 ` Dan Williams
2019-05-07 20:47 ` David Hildenbrand
2019-05-07 20:57 ` Dan Williams
2019-05-07 21:13 ` David Hildenbrand
2019-05-07 18:37 ` [PATCH v2 3/8] mm/memory_hotplug: arch_remove_memory() and __remove_pages() with CONFIG_MEMORY_HOTPLUG David Hildenbrand
2019-05-07 21:02 ` Dan Williams
2019-05-07 21:06 ` David Hildenbrand
2019-05-13 7:48 ` David Hildenbrand
2019-05-13 8:20 ` David Hildenbrand
2019-05-07 18:38 ` [PATCH v2 4/8] mm/memory_hotplug: Create memory block devices after arch_add_memory() David Hildenbrand
2019-05-07 21:17 ` Dan Williams
2019-05-07 21:27 ` David Hildenbrand
2019-05-08 8:35 ` David Hildenbrand
2019-05-09 12:43 ` Wei Yang
2019-05-09 12:50 ` David Hildenbrand
2019-05-09 13:55 ` Wei Yang
2019-05-09 14:05 ` David Hildenbrand
2019-05-09 14:31 ` Wei Yang
2019-05-09 14:58 ` David Hildenbrand
2019-05-09 21:50 ` Wei Yang
2019-05-09 22:18 ` David Hildenbrand
2019-05-07 18:38 ` [PATCH v2 5/8] mm/memory_hotplug: Drop MHP_MEMBLOCK_API David Hildenbrand
2019-05-07 21:19 ` Dan Williams
2019-05-07 21:24 ` David Hildenbrand [this message]
2019-05-07 21:25 ` Dan Williams
2019-05-08 7:39 ` David Hildenbrand
2019-05-08 23:08 ` osalvador
2019-05-09 7:05 ` David Hildenbrand
2019-05-07 18:38 ` [PATCH v2 6/8] mm/memory_hotplug: Remove memory block devices before arch_remove_memory() David Hildenbrand
2019-05-07 21:27 ` Dan Williams
2019-05-07 18:38 ` [PATCH v2 7/8] mm/memory_hotplug: Make unregister_memory_block_under_nodes() never fail David Hildenbrand
2019-05-08 0:15 ` Dan Williams
2019-05-08 7:21 ` David Hildenbrand
2019-05-08 13:50 ` Dan Williams
2019-05-07 18:38 ` [PATCH v2 8/8] mm/memory_hotplug: Remove "zone" parameter from sparse_remove_one_section David Hildenbrand
2019-05-08 0:30 ` Dan Williams
2019-05-07 19:04 ` [PATCH v2 0/8] mm/memory_hotplug: Factor out memory block device handling Dan Williams
2019-05-07 19:21 ` David Hildenbrand
2019-05-07 19:37 ` David Hildenbrand
2019-05-07 20:36 ` Dan Williams
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=d83fec16-ceff-2f6f-72e1-48996187d5ba@redhat.com \
--to=david@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=arunks@codeaurora.org \
--cc=cai@lca.pw \
--cc=dan.j.williams@intel.com \
--cc=iamjoonsoo.kim@lge.com \
--cc=linux-ia64@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-s390@vger.kernel.org \
--cc=linux-sh@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=malat@debian.org \
--cc=mhocko@suse.com \
--cc=osalvador@suse.com \
--cc=pasha.tatashin@soleen.com \
--cc=richard.weiyang@gmail.com \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
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).