From: Andrew Morton <akpm@linux-foundation.org>
To: Huang Shijie <shijie@os.amperecomputing.com>
Cc: bhe@redhat.com, patches@amperecomputing.com, vgoyal@redhat.com,
dyoung@redhat.com, kexec@lists.infradead.org,
linux-kernel@vger.kernel.org, k-hagio-ab@nec.com,
lijiang@redhat.com
Subject: Re: [PATCH RESEND] crash_core: export vmemmap when CONFIG_SPARSEMEM_VMEMMAP is enabled
Date: Mon, 26 Feb 2024 11:10:37 -0800 [thread overview]
Message-ID: <20240226111037.d76d299db1b26673b876e83a@linux-foundation.org> (raw)
In-Reply-To: <20240226020433.3353-1-shijie@os.amperecomputing.com>
On Mon, 26 Feb 2024 10:04:33 +0800 Huang Shijie <shijie@os.amperecomputing.com> wrote:
> In memory_model.h, if CONFIG_SPARSEMEM_VMEMMAP is configed,
> kernel will use vmemmap to do the __pfn_to_page/page_to_pfn,
> and kernel will not use the "classic sparse" to do the
> __pfn_to_page/page_to_pfn.
>
> So export the vmemmap when CONFIG_SPARSEMEM_VMEMMAP is configed.
> This makes the user applications (crash, etc) get faster
> pfn_to_page/page_to_pfn operations too.
This is significantly out of sync with development trees. Please take
a look at linux-next and redo the patch if still needed?
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prev parent reply other threads:[~2024-02-26 19:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-26 2:04 [PATCH RESEND] crash_core: export vmemmap when CONFIG_SPARSEMEM_VMEMMAP is enabled Huang Shijie
2024-02-26 19:10 ` Andrew Morton [this message]
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