From: Serge Semin <fancer.lancer@gmail.com>
To: ralf@linux-mips.org, paul.burton@imgtec.com, rabinv@axis.com,
matt.redfearn@imgtec.com, james.hogan@imgtec.com,
alexander.sverdlin@nokia.com, robh+dt@kernel.org,
frowand.list@gmail.com
Cc: Sergey.Semin@t-platforms.ru, linux-mips@linux-mips.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Serge Semin <fancer.lancer@gmail.com>
Subject: [PATCH 17/21] MIPS memblock: Alter high memory freeing method
Date: Mon, 19 Dec 2016 05:07:42 +0300 [thread overview]
Message-ID: <1482113266-13207-18-git-send-email-fancer.lancer@gmail.com> (raw)
In-Reply-To: <1482113266-13207-1-git-send-email-fancer.lancer@gmail.com>
Memblock regions are used to find all available high memory
and to set it free into buddy allocator.
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
---
arch/mips/mm/init.c | 54 ++++++++++++++---------------------
1 file changed, 21 insertions(+), 33 deletions(-)
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 6f186c7..98680fb 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -404,32 +404,6 @@ void maar_init(void)
}
#ifndef CONFIG_NEED_MULTIPLE_NODES
-int page_is_ram(unsigned long pagenr)
-{
- int i;
-
- for (i = 0; i < boot_mem_map.nr_map; i++) {
- unsigned long addr, end;
-
- switch (boot_mem_map.map[i].type) {
- case BOOT_MEM_RAM:
- case BOOT_MEM_INIT_RAM:
- break;
- default:
- /* not usable memory */
- continue;
- }
-
- addr = PFN_UP(boot_mem_map.map[i].addr);
- end = PFN_DOWN(boot_mem_map.map[i].addr +
- boot_mem_map.map[i].size);
-
- if (pagenr >= addr && pagenr < end)
- return 1;
- }
-
- return 0;
-}
void __init paging_init(void)
{
@@ -458,18 +432,32 @@ static struct kcore_list kcore_kseg0;
static inline void mem_init_free_highmem(void)
{
#ifdef CONFIG_HIGHMEM
- unsigned long tmp;
+ struct memblock_region *reg;
+ unsigned long pfn;
if (cpu_has_dc_aliases)
return;
- for (tmp = highstart_pfn; tmp < highend_pfn; tmp++) {
- struct page *page = pfn_to_page(tmp);
+ /* Walk through all memory regions freeing highmem pages only */
+ for_each_memblock(memory, reg) {
+ unsigned long start = memblock_region_memory_base_pfn(reg);
+ unsigned long end = memblock_region_memory_end_pfn(reg);
+
+ /* Ignore complete lowmem entries */
+ if (end <= max_low_pfn)
+ continue;
- if (!page_is_ram(tmp))
- SetPageReserved(page);
- else
- free_highmem_page(page);
+ /* Truncate partial highmem entries */
+ if (start < max_low_pfn)
+ start = max_low_pfn;
+
+ /*
+ * MIPS memblock allocator doesn't allocate regions from high
+ * memory (see mips_lowmem_limit variable initialization), so
+ * just set corresponding pages free
+ */
+ for (pfn = start; pfn < end; pfn++)
+ free_highmem_page(pfn_to_page(pfn));
}
#endif
}
--
2.6.6
next prev parent reply other threads:[~2016-12-19 2:15 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-19 2:07 [PATCH 00/21] MIPS memblock: Remove bootmem code and switch to NO_BOOTMEM Serge Semin
2016-12-19 2:07 ` [PATCH 01/21] MIPS memblock: Unpin dts memblock sanity check method Serge Semin
2016-12-19 4:21 ` kbuild test robot
2016-12-19 4:21 ` kbuild test robot
2016-12-19 4:28 ` kbuild test robot
2016-12-19 4:28 ` kbuild test robot
2016-12-22 20:57 ` Rob Herring
2016-12-22 21:57 ` Serge Semin
2016-12-19 2:07 ` [PATCH 02/21] MIPS memblock: Add dts mem and reserved-mem callbacks Serge Semin
2016-12-19 4:13 ` kbuild test robot
2016-12-19 4:13 ` kbuild test robot
2016-12-19 2:07 ` [PATCH 03/21] MIPS memblock: Alter traditional add_memory_region() method Serge Semin
2016-12-19 2:07 ` [PATCH 04/21] MIPS memblock: Alter user-defined memory parameter parser Serge Semin
2017-01-23 7:55 ` Marcin Nowakowski
2017-01-23 7:55 ` Marcin Nowakowski
2016-12-19 2:07 ` [PATCH 05/21] MIPS memblock: Alter initrd memory reservation method Serge Semin
2016-12-19 5:08 ` kbuild test robot
2016-12-19 5:08 ` kbuild test robot
2016-12-19 2:07 ` [PATCH 06/21] MIPS memblock: Alter kexec-crashkernel parameters parser Serge Semin
2016-12-19 2:07 ` [PATCH 07/21] MIPS memblock: Alter elfcorehdr " Serge Semin
2016-12-19 4:09 ` kbuild test robot
2016-12-19 4:09 ` kbuild test robot
2016-12-19 2:07 ` [PATCH 08/21] MIPS memblock: Move kernel parameters parser into individual method Serge Semin
2016-12-19 2:07 ` [PATCH 09/21] MIPS memblock: Move kernel memory reservation to " Serge Semin
2016-12-19 2:07 ` [PATCH 10/21] MIPS memblock: Discard bootmem allocator initialization Serge Semin
2016-12-19 4:28 ` kbuild test robot
2016-12-19 4:28 ` kbuild test robot
2017-01-23 7:55 ` Marcin Nowakowski
2017-01-23 7:55 ` Marcin Nowakowski
2016-12-19 2:07 ` [PATCH 11/21] MIPS memblock: Add memblock sanity check method Serge Semin
2016-12-19 2:07 ` [PATCH 12/21] MIPS memblock: Add memblock print outs in debug Serge Semin
2016-12-19 2:07 ` [PATCH 13/21] MIPS memblock: Add memblock allocator initialization Serge Semin
2016-12-19 2:07 ` [PATCH 14/21] MIPS memblock: Alter IO resources initialization method Serge Semin
2016-12-19 2:07 ` [PATCH 15/21] MIPS memblock: Alter weakened MAAR " Serge Semin
2016-12-19 2:07 ` [PATCH 16/21] MIPS memblock: Alter paging " Serge Semin
2016-12-19 2:07 ` Serge Semin [this message]
2016-12-19 2:07 ` [PATCH 18/21] MIPS memblock: Slightly improve buddy allocator init method Serge Semin
2016-12-19 2:07 ` [PATCH 19/21] MIPS memblock: Add print out method of kernel virtual memory layout Serge Semin
2016-12-19 12:04 ` Matt Redfearn
2016-12-19 12:04 ` Matt Redfearn
2016-12-19 12:09 ` Serge Semin
2016-12-19 13:02 ` James Hogan
2016-12-19 13:02 ` James Hogan
2016-12-19 13:15 ` Serge Semin
2016-12-19 2:07 ` [PATCH 20/21] MIPS memblock: Add free low memory test method call Serge Semin
2016-12-19 2:07 ` [PATCH 21/21] MIPS memblock: Deactivate old bootmem allocator Serge Semin
2017-01-23 7:55 ` [PATCH 00/21] MIPS memblock: Remove bootmem code and switch to NO_BOOTMEM Marcin Nowakowski
2017-01-23 7:55 ` Marcin Nowakowski
2017-03-02 3:06 ` Florian Fainelli
2017-01-23 14:51 ` Joshua Kinard
2017-05-22 9:48 ` Marcin Nowakowski
2017-05-22 9:48 ` Marcin Nowakowski
2017-05-22 10:26 ` Serge Semin
2017-05-22 12:19 ` Marcin Nowakowski
2017-05-22 12:19 ` Marcin Nowakowski
2017-05-22 12:47 ` Joshua Kinard
2017-05-22 13:03 ` Serge Semin
2017-05-22 13:20 ` Alexander Sverdlin
2017-05-22 13:20 ` Alexander Sverdlin
2017-05-22 13:29 ` Serge Semin
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=1482113266-13207-18-git-send-email-fancer.lancer@gmail.com \
--to=fancer.lancer@gmail.com \
--cc=Sergey.Semin@t-platforms.ru \
--cc=alexander.sverdlin@nokia.com \
--cc=devicetree@vger.kernel.org \
--cc=frowand.list@gmail.com \
--cc=james.hogan@imgtec.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mips@linux-mips.org \
--cc=matt.redfearn@imgtec.com \
--cc=paul.burton@imgtec.com \
--cc=rabinv@axis.com \
--cc=ralf@linux-mips.org \
--cc=robh+dt@kernel.org \
/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).