From: Mike Rapoport <rppt@kernel•org>
To: Andrew Morton <akpm@linux-foundation•org>
Cc: linux-sh@vger•kernel.org, Peter Zijlstra <peterz@infradead•org>,
Dave Hansen <dave.hansen@linux•intel.com>,
linux-mips@vger•kernel.org, Max Filippov <jcmvbkbc@gmail•com>,
Paul Mackerras <paulus@samba•org>,
sparclinux@vger•kernel.org, linux-riscv@lists•infradead.org,
Will Deacon <will@kernel•org>, Stafford Horne <shorne@gmail•com>,
Marek Szyprowski <m.szyprowski@samsung•com>,
linux-s390@vger•kernel.org, linux-c6x-dev@linux-c6x•org,
Yoshinori Sato <ysato@users•sourceforge.jp>,
x86@kernel•org, Russell King <linux@armlinux•org.uk>,
Mike Rapoport <rppt@linux•ibm.com>,
clang-built-linux@googlegroups•com,
Ingo Molnar <mingo@redhat•com>,
Catalin Marinas <catalin.marinas@arm•com>,
uclinux-h8-devel@lists•sourceforge.jp,
linux-xtensa@linux-xtensa•org, openrisc@lists•librecores.org,
Borislav Petkov <bp@alien8•de>, Andy Lutomirski <luto@kernel•org>,
Paul Walmsley <paul.walmsley@sifive•com>,
Thomas Gleixner <tglx@linutronix•de>,
linux-arm-kernel@lists•infradead.org,
Michal Simek <monstr@monstr•eu>,
linux-mm@kvack•org, linuxppc-dev@lists•ozlabs.org,
linux-kernel@vger•kernel.org, iommu@lists•linux-foundation.org,
Palmer Dabbelt <palmer@dabbelt•com>,
Christoph Hellwig <hch@lst•de>, Mike Rapoport <rppt@kernel•org>
Subject: [PATCH 14/15] x86/numa: remove redundant iteration over memblock.reserved
Date: Tue, 28 Jul 2020 08:11:52 +0300 [thread overview]
Message-ID: <20200728051153.1590-15-rppt@kernel.org> (raw)
In-Reply-To: <20200728051153.1590-1-rppt@kernel.org>
From: Mike Rapoport <rppt@linux•ibm.com>
numa_clear_kernel_node_hotplug() function first traverses numa_meminfo
regions to set node ID in memblock.reserved and than traverses
memblock.reserved to update reserved_nodemask to include node IDs that were
set in the first loop.
Remove redundant traversal over memblock.reserved and update
reserved_nodemask while iterating over numa_meminfo.
Signed-off-by: Mike Rapoport <rppt@linux•ibm.com>
---
arch/x86/mm/numa.c | 26 ++++++++++----------------
1 file changed, 10 insertions(+), 16 deletions(-)
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index 8ee952038c80..4078abd33938 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -498,31 +498,25 @@ static void __init numa_clear_kernel_node_hotplug(void)
* and use those ranges to set the nid in memblock.reserved.
* This will split up the memblock regions along node
* boundaries and will set the node IDs as well.
+ *
+ * The nid will also be set in reserved_nodemask which is later
+ * used to clear MEMBLOCK_HOTPLUG flag.
+ *
+ * [ Note, when booting with mem=nn[kMG] or in a kdump kernel,
+ * numa_meminfo might not include all memblock.reserved
+ * memory ranges, because quirks such as trim_snb_memory()
+ * reserve specific pages for Sandy Bridge graphics.
+ * These ranges will remain with nid == MAX_NUMNODES. ]
*/
for (i = 0; i < numa_meminfo.nr_blks; i++) {
struct numa_memblk *mb = numa_meminfo.blk + i;
int ret;
ret = memblock_set_node(mb->start, mb->end - mb->start, &memblock.reserved, mb->nid);
+ node_set(mb->nid, reserved_nodemask);
WARN_ON_ONCE(ret);
}
- /*
- * Now go over all reserved memblock regions, to construct a
- * node mask of all kernel reserved memory areas.
- *
- * [ Note, when booting with mem=nn[kMG] or in a kdump kernel,
- * numa_meminfo might not include all memblock.reserved
- * memory ranges, because quirks such as trim_snb_memory()
- * reserve specific pages for Sandy Bridge graphics. ]
- */
- for_each_memblock(reserved, mb_region) {
- int nid = memblock_get_region_node(mb_region);
-
- if (nid != MAX_NUMNODES)
- node_set(nid, reserved_nodemask);
- }
-
/*
* Finally, clear the MEMBLOCK_HOTPLUG flag for all memory
* belonging to the reserved node mask.
--
2.26.2
next prev parent reply other threads:[~2020-07-28 5:46 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-28 5:11 [PATCH 00/15] memblock: seasonal cleaning^w cleanup Mike Rapoport
2020-07-28 5:11 ` [PATCH 01/15] KVM: PPC: Book3S HV: simplify kvm_cma_reserve() Mike Rapoport
2020-07-28 5:11 ` [PATCH 02/15] dma-contiguous: simplify cma_early_percent_memory() Mike Rapoport
2020-07-28 6:37 ` Christoph Hellwig
2020-07-28 5:11 ` [PATCH 03/15] arm, xtensa: simplify initialization of high memory pages Mike Rapoport
2020-07-28 8:09 ` Max Filippov
2020-07-28 5:11 ` [PATCH 04/15] arm64: numa: simplify dummy_numa_init() Mike Rapoport
2020-07-29 8:30 ` Jonathan Cameron
2020-07-30 12:03 ` Catalin Marinas
2020-07-28 5:11 ` [PATCH 05/15] h8300, nds32, openrisc: simplify detection of memory extents Mike Rapoport
2020-07-29 11:41 ` Stafford Horne
2020-07-28 5:11 ` [PATCH 06/15] powerpc: fadamp: simplify fadump_reserve_crash_area() Mike Rapoport
2020-07-30 12:15 ` Michael Ellerman
2020-08-01 10:18 ` Mike Rapoport
2020-08-01 10:53 ` Hari Bathini
2020-08-02 13:14 ` Michael Ellerman
2020-07-28 5:11 ` [PATCH 07/15] riscv: drop unneeded node initialization Mike Rapoport
2020-07-28 5:11 ` [PATCH 08/15] mircoblaze: drop unneeded NUMA and sparsemem initializations Mike Rapoport
2020-07-28 5:11 ` [PATCH 09/15] memblock: make for_each_memblock_type() iterator private Mike Rapoport
2020-07-30 1:52 ` Baoquan He
2020-07-28 5:11 ` [PATCH 10/15] memblock: make memblock_debug and related functionality private Mike Rapoport
2020-07-30 1:54 ` Baoquan He
2020-07-28 5:11 ` [PATCH 11/15] memblock: reduce number of parameters in for_each_mem_range() Mike Rapoport
2020-07-30 2:22 ` Baoquan He
2020-07-28 5:11 ` [PATCH 12/15] arch, mm: replace for_each_memblock() with for_each_mem_pfn_range() Mike Rapoport
2020-07-28 5:11 ` [PATCH 13/15] arch, drivers: replace for_each_membock() with for_each_mem_range() Mike Rapoport
2020-07-28 15:02 ` Emil Renner Berthing
2020-07-28 5:11 ` Mike Rapoport [this message]
2020-07-28 10:44 ` [PATCH 14/15] x86/numa: remove redundant iteration over memblock.reserved Ingo Molnar
2020-07-28 10:56 ` Mike Rapoport
2020-07-28 11:31 ` Ingo Molnar
2020-07-28 11:02 ` Baoquan He
2020-07-28 14:15 ` Mike Rapoport
2020-07-28 14:23 ` Baoquan He
2020-07-28 5:11 ` [PATCH 15/15] memblock: remove 'type' parameter from for_each_memblock() Mike Rapoport
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=20200728051153.1590-15-rppt@kernel.org \
--to=rppt@kernel$(echo .)org \
--cc=akpm@linux-foundation$(echo .)org \
--cc=bp@alien8$(echo .)de \
--cc=catalin.marinas@arm$(echo .)com \
--cc=clang-built-linux@googlegroups$(echo .)com \
--cc=dave.hansen@linux$(echo .)intel.com \
--cc=hch@lst$(echo .)de \
--cc=iommu@lists$(echo .)linux-foundation.org \
--cc=jcmvbkbc@gmail$(echo .)com \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
--cc=linux-c6x-dev@linux-c6x$(echo .)org \
--cc=linux-kernel@vger$(echo .)kernel.org \
--cc=linux-mips@vger$(echo .)kernel.org \
--cc=linux-mm@kvack$(echo .)org \
--cc=linux-riscv@lists$(echo .)infradead.org \
--cc=linux-s390@vger$(echo .)kernel.org \
--cc=linux-sh@vger$(echo .)kernel.org \
--cc=linux-xtensa@linux-xtensa$(echo .)org \
--cc=linux@armlinux$(echo .)org.uk \
--cc=linuxppc-dev@lists$(echo .)ozlabs.org \
--cc=luto@kernel$(echo .)org \
--cc=m.szyprowski@samsung$(echo .)com \
--cc=mingo@redhat$(echo .)com \
--cc=monstr@monstr$(echo .)eu \
--cc=openrisc@lists$(echo .)librecores.org \
--cc=palmer@dabbelt$(echo .)com \
--cc=paul.walmsley@sifive$(echo .)com \
--cc=paulus@samba$(echo .)org \
--cc=peterz@infradead$(echo .)org \
--cc=rppt@linux$(echo .)ibm.com \
--cc=shorne@gmail$(echo .)com \
--cc=sparclinux@vger$(echo .)kernel.org \
--cc=tglx@linutronix$(echo .)de \
--cc=uclinux-h8-devel@lists$(echo .)sourceforge.jp \
--cc=will@kernel$(echo .)org \
--cc=x86@kernel$(echo .)org \
--cc=ysato@users$(echo .)sourceforge.jp \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
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