- 15 Jan, 2016 1 commit
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Yaowei Bai authored
Make memblock_is_memory() and memblock_is_reserved return bool to improve readability due to these particular functions only using either one or zero as their return value. No functional change. Signed-off-by:
Yaowei Bai <baiyaowei@cmss.chinamobile.com> Acked-by:
Michal Hocko <mhocko@suse.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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- 09 Dec, 2015 1 commit
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Ard Biesheuvel authored
This introduces the MEMBLOCK_NOMAP attribute and the required plumbing to make it usable as an indicator that some parts of normal memory should not be covered by the kernel direct mapping. It is up to the arch to actually honor the attribute when laying out this mapping, but the memblock code itself is modified to disregard these regions for allocations and other general use. Cc: linux-mm@kvack.org Cc: Alexander Kuleshov <kuleshovmail@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Reviewed-by:
Matt Fleming <matt@codeblueprint.co.uk> Signed-off-by:
Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by:
Will Deacon <will.deacon@arm.com>
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- 06 Nov, 2015 1 commit
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Alexander Kuleshov authored
memblock_remove_range() is only used in the mm/memblock.c, so we can make it static. Signed-off-by:
Alexander Kuleshov <kuleshovmail@gmail.com> Signed-off-by:
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- 08 Sep, 2015 6 commits
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Alexander Kuleshov authored
Signed-off-by:
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Alexander Kuleshov authored
s/succees/success/ Signed-off-by:
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Alexander Kuleshov authored
Since commit e3239ff9 ("memblock: Rename memblock_region to memblock_type and memblock_property to memblock_region"), all local variables of the membock_type type were renamed to 'type'. This commit renames all remaining local variables with the memblock_type type to the same view. Signed-off-by:
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Tang Chen authored
When parsing SRAT, all memory ranges are added into numa_meminfo. In numa_init(), before entering numa_cleanup_meminfo(), all possible memory ranges are in numa_meminfo. And numa_cleanup_meminfo() removes all ranges over max_pfn or empty. But, this only works if the nodes are continuous. Let's have a look at the following example: We have an SRAT like this: SRAT: Node 0 PXM 0 [mem 0x00000000-0x5fffffff] SRAT: Node 0 PXM 0 [mem 0x100000000-0x1ffffffffff] SRAT: Node 1 PXM 1 [mem 0x20000000000-0x3ffffffffff] SRAT: Node 4 PXM 2 [mem 0x40000000000-0x5ffffffffff] hotplug SRAT: Node 5 PXM 3 [mem 0x60000000000-0x7ffffffffff] hotplug SRAT: Node 2 PXM 4 [mem 0x80000000000-0x9ffffffffff] hotplug SRAT: Node 3 PXM 5 [mem 0xa0000000000-0xbffffffffff] hotplug SRAT: Node 6 PXM 6 [mem 0xc0000000000-0xdffffffffff] hotplug SRAT: Node 7 PXM 7 [mem 0xe0000000000-0xfffffffffff] hotplug On boot, only node 0,1,2,3 exist. And the numa_meminfo will look like this: numa_meminfo.nr_blks = 9 1. on node 0: [0, 60000000] 2. on node 0: [100000000, 20000000000] 3. on node 1: [20000000000, 40000000000] 4. on node 4: [40000000000, 60000000000] 5. on node 5: [60000000000, 80000000000] 6. on node 2: [80000000000, a0000000000] 7. on node 3: [a0000000000, a0800000000] 8. on node 6: [c0000000000, a0800000000] 9. on node 7: [e0000000000, a0800000000] And numa_cleanup_meminfo() will merge 1 and 2, and remove 8,9 because the end address is over max_pfn, which is a0800000000. But 4 and 5 are not removed because their end addresses are less then max_pfn. But in fact, node 4 and 5 don't exist. In a word, numa_cleanup_meminfo() is not able to handle holes between nodes. Since memory ranges in node 4 and 5 are in numa_meminfo, in numa_register_memblks(), node 4 and 5 will be mistakenly set to online. If you run lscpu, it will show: NUMA node0 CPU(s): 0-14,128-142 NUMA node1 CPU(s): 15-29,143-157 NUMA node2 CPU(s): NUMA node3 CPU(s): NUMA node4 CPU(s): 62-76,190-204 NUMA node5 CPU(s): 78-92,206-220 In this patch, we use memblock_overlaps_region() to check if ranges in numa_meminfo overlap with ranges in memory_block. Since memory_block contains all available memory at boot time, if they overlap, it means the ranges exist. If not, then remove them from numa_meminfo. After this patch, lscpu will show: NUMA node0 CPU(s): 0-14,128-142 NUMA node1 CPU(s): 15-29,143-157 NUMA node4 CPU(s): 62-76,190-204 NUMA node5 CPU(s): 78-92,206-220 Signed-off-by:
Tang Chen <tangchen@cn.fujitsu.com> Reviewed-by:
Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tejun Heo <tj@kernel.org> Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Xishi Qiu <qiuxishi@huawei.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Vladimir Murzin <vladimir.murzin@arm.com> Cc: Fabian Frederick <fabf@skynet.be> Cc: Alexander Kuleshov <kuleshovmail@gmail.com> Cc: Baoquan He <bhe@redhat.com> Signed-off-by:
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Tang Chen authored
memblock_overlaps_region() checks if the given memblock region intersects a region in memblock. If so, it returns the index of the intersected region. But its only caller is memblock_is_region_reserved(), and it returns 0 if false, non-zero if true. Both of these should return bool. Signed-off-by:
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Wei Yang authored
Each memblock_region has flags to indicates the type of this range. For the overlap case, memblock_add_range() inserts the lower part and leave the upper part as indicated in the overlapped region. If the flags of the new range differs from the overlapped region, the information recorded is not correct. This patch adds a WARN_ON when the flags of the new range differs from the overlapped region. Signed-off-by:
Wei Yang <weiyang@linux.vnet.ibm.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by:
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- 04 Sep, 2015 1 commit
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Wei Yang authored
Each memblock_region has nid to indicates the Node ID of this range. For the overlap case, memblock_add_range() inserts the lower part and leave the upper part as indicated in the overlapped region. If the nid of the new range differs from the overlapped region, the information recorded is not correct. This patch adds a WARN_ON when the nid of the new range differs from the overlapped region. Signed-off-by:
David Rientjes <rientjes@google.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by:
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- 01 Jul, 2015 2 commits
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Mel Gorman authored
__free_pages_bootmem prepares a page for release to the buddy allocator and assumes that the struct page is initialised. Parallel initialisation of struct pages defers initialisation and __free_pages_bootmem can be called for struct pages that cannot yet map struct page to PFN. This patch passes PFN to __free_pages_bootmem with no other functional change. Signed-off-by:
Mel Gorman <mgorman@suse.de> Tested-by:
Nate Zimmer <nzimmer@sgi.com> Tested-by:
Waiman Long <waiman.long@hp.com> Tested-by:
Daniel J Blueman <daniel@numascale.com> Acked-by:
Pekka Enberg <penberg@kernel.org> Cc: Robin Holt <robinmholt@gmail.com> Cc: Nate Zimmer <nzimmer@sgi.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Waiman Long <waiman.long@hp.com> Cc: Scott Norton <scott.norton@hp.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundati...
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Robin Holt authored
Struct page initialisation had been identified as one of the reasons why large machines take a long time to boot. Patches were posted a long time ago to defer initialisation until they were first used. This was rejected on the grounds it should not be necessary to hurt the fast paths. This series reuses much of the work from that time but defers the initialisation of memory to kswapd so that one thread per node initialises memory local to that node. After applying the series and setting the appropriate Kconfig variable I see this in the boot log on a 64G machine [ 7.383764] kswapd 0 initialised deferred memory in 188ms [ 7.404253] kswapd 1 initialised deferred memory in 208ms [ 7.411044] kswapd 3 initialised deferred memory in 216ms [ 7.411551] kswapd 2 initialised deferred memory in 216ms On a 1TB machine, I see [ 8.406511] kswapd 3 initialised deferred memory in 1116ms [ 8.428518] kswapd 1 initialised deferred memory in 1140ms [ 8.435977] kswapd 0 initialised deferred memory in 1148ms [ 8.437416] kswapd 2 initialised deferred memory in 1148ms Once booted the machine appears to work as normal. Boot times were measured from the time shutdown was called until ssh was available again. In the 64G case, the boot time savings are negligible. On the 1TB machine, the savings were 16 seconds. Nate Zimmer said: : On an older 8 TB box with lots and lots of cpus the boot time, as : measure from grub to login prompt, the boot time improved from 1484 : seconds to exactly 1000 seconds. Waiman Long said: : I ran a bootup timing test on a 12-TB 16-socket IvyBridge-EX system. From : grub menu to ssh login, the bootup time was 453s before the patch and 265s : after the patch - a saving of 188s (42%). Daniel Blueman said: : On a 7TB, 1728-core NumaConnect system with 108 NUMA nodes, we're seeing : stock 4.0 boot in 7136s. This drops to 2159s, or a 70% reduction with : this patchset. Non-temporal PMD init (https://lkml.org/lkml/2015/4/23/350 ) : drops this to 1045s. This patch (of 13): As part of initializing struct page's in 2MiB chunks, we noticed that at the end of free_all_bootmem(), there was nothing which had forced the reserved/allocated 4KiB pages to be initialized. This helper function will be used for that expansion. Signed-off-by:
Robin Holt <holt@sgi.com> Signed-off-by:
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- 25 Jun, 2015 2 commits
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Tony Luck authored
Try to allocate all boot time kernel data structures from mirrored memory. If we run out of mirrored memory print warnings, but fall back to using non-mirrored memory to make sure that we still boot. By number of bytes, most of what we allocate at boot time is the page structures. 64 bytes per 4K page on x86_64 ... or about 1.5% of total system memory. For workloads where the bulk of memory is allocated to applications this may represent a useful improvement to system availability since 1.5% of total memory might be a third of the memory allocated to the kernel. Signed-off-by:
Tony Luck <tony.luck@intel.com> Cc: Xishi Qiu <qiuxishi@huawei.com> Cc: Hanjun Guo <guohanjun@huawei.com> Cc: Xiexiuqi <xiexiuqi@huawei.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Signed-off-by:
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Tony Luck authored
Some high end Intel Xeon systems report uncorrectable memory errors as a recoverable machine check. Linux has included code for some time to process these and just signal the affected processes (or even recover completely if the error was in a read only page that can be replaced by reading from disk). But we have no recovery path for errors encountered during kernel code execution. Except for some very specific cases were are unlikely to ever be able to recover. Enter memory mirroring. Actually 3rd generation of memory mirroing. Gen1: All memory is mirrored Pro: No s/w enabling - h/w just gets good data from other side of the mirror Con: Halves effective memory capacity available to OS/applications Gen2: Partial memory mirror - just mirror memory begind some memory controllers Pro: Keep more of the capacity Con: Nightmare to enable. Have to choose between allocating from mirrored memory for saf...
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- 15 Apr, 2015 1 commit
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Alexander Kuleshov authored
memblock_reserve() calls memblock_reserve_region() which prints debugging information if 'memblock=debug' was passed on the command line. This patch adds the same behaviour, but for memblock_add function(). [akpm@linux-foundation.org: s/memblock_memory/memblock_add/ in message] Signed-off-by:
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- 14 Apr, 2015 1 commit
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Baoquan He authored
A small cleanup. Seems in e3239ff9 ("memblock: Rename memblock_region to memblock_type and memblock_property to memblock_region") this one was missed. Signed-off-by:
Baoquan He <bhe@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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- 13 Dec, 2014 1 commit
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Tony Luck authored
There is a lot of duplication in the rubric around actually setting or clearing a mem region flag. Create a new helper function to do this and reduce each of memblock_mark_hotplug() and memblock_clear_hotplug() to a single line. This will be useful if someone were to add a new mem region flag - which I hope to be doing some day soon. But it looks like a plausible cleanup even without that - so I'd like to get it out of the way now. Signed-off-by:
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- 10 Sep, 2014 1 commit
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Xishi Qiu authored
Let memblock skip the hotpluggable memory regions in __next_mem_range(), it is used to to prevent memblock from allocating hotpluggable memory for the kernel at early time. The code is the same as __next_mem_range_rev(). Clear hotpluggable flag before releasing free pages to the buddy allocator. If we don't clear hotpluggable flag in free_low_memory_core_early(), the memory which marked hotpluggable flag will not free to buddy allocator. Because __next_mem_range() will skip them. free_low_memory_core_early for_each_free_mem_range for_each_mem_range __next_mem_range [akpm@linux-foundation.org: fix warning] Signed-off-by:
Xishi Qiu <qiuxishi@huawei.com> Cc: Tejun Heo <tj@kernel.org> Cc: Tang Chen <tangchen@cn.fujitsu.com> Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by:
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- 29 Aug, 2014 1 commit
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Tang Chen authored
In memblock_find_in_range_node(), we defined ret as int. But it should be phys_addr_t because it is used to store the return value from __memblock_find_range_bottom_up(). The bug has not been triggered because when allocating low memory near the kernel end, the "int ret" won't turn out to be negative. When we started to allocate memory on other nodes, and the "int ret" could be minus. Then the kernel will panic. A simple way to reproduce this: comment out the following code in numa_init(), memblock_set_bottom_up(false); and the kernel won't boot. Reported-by:
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- 06 Jun, 2014 1 commit
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Catalin Marinas authored
Kmemleak could ignore memory blocks allocated via memblock_alloc() leading to false positives during scanning. This patch adds the corresponding callbacks and removes kmemleak_free_* calls in mm/nobootmem.c to avoid duplication. The kmemleak_alloc() in mm/nobootmem.c is kept since __alloc_memory_core_early() does not use memblock_alloc() directly. Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
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- 04 Jun, 2014 2 commits
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Fabian Frederick authored
Replace ((x) >> PAGE_SHIFT) with the pfn macro. Signed-off-by:
Fabian Frederick <fabf@skynet.be> Signed-off-by:
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Akinobu Mita authored
This introduces memblock_alloc_range() which allocates memblock from the specified range of physical address. I would like to use this function to specify the location of CMA. Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Don Dutile <ddutile@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by:
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- 20 May, 2014 2 commits
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Philipp Hachtmann authored
Add the physmem list to the memblock structure. This list only exists if HAVE_MEMBLOCK_PHYS_MAP is selected and contains the unmodified list of physically available memory. It differs from the memblock memory list as it always contains all memory ranges even if the memory has been restricted, e.g. by use of the mem= kernel parameter. Signed-off-by:
Philipp Hachtmann <phacht@linux.vnet.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com>
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Philipp Hachtmann authored
Refactor the memblock code and extend the memblock API to make it more flexible. With the extended API it is simple to define and work with additional memory lists. The static functions memblock_add_region and __memblock_remove are renamed to memblock_add_range and meblock_remove_range and added to the memblock API. The __next_free_mem_range and __next_free_mem_range_rev functions are replaced with calls to the more generic list walkers __next_mem_range and __next_mem_range_rev. To walk an arbitrary memory list two new macros for_each_mem_range and for_each_mem_range_rev are added. These new macros are used to define for_each_free_mem_range and for_each_free_mem_range_reverse. Signed-off-by:
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- 07 Apr, 2014 2 commits
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Fabian Frederick authored
Replace ((phys_addr_t)(x) << PAGE_SHIFT) by pfn macro. Signed-off-by:
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Emil Medve authored
This is a small cleanup. Signed-off-by:
Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by:
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- 12 Mar, 2014 1 commit
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Laura Abbott authored
Apart from setting the limit of memblock, it's also useful to be able to get the limit to avoid recalculating it every time. Add the function to do so. Acked-by:
Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by:
Nicolas Pitre <nico@linaro.org> Signed-off-by:
Laura Abbott <lauraa@codeaurora.org> Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk>
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- 30 Jan, 2014 1 commit
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Yinghai Lu authored
In original bootmem wrapper for memblock, we have limit checking. Add it to memblock_virt_alloc, to address arm and x86 booting crash. Signed-off-by:
Yinghai Lu <yinghai@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Reported-by:
Kevin Hilman <khilman@linaro.org> Tested-by:
Olof Johansson <olof@lixom.net> Tested-by:
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Tested-by:
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- 28 Jan, 2014 1 commit
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Yinghai Lu authored
In original __alloc_memory_core_early() for bootmem wrapper, we do not align size silently. We should not do that, as later free with old size will leave some range not freed. It's obvious that code is copied from memblock_base_nid(), and that code is wrong for the same reason. Also remove that in memblock_alloc_base. Signed-off-by:
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- 24 Jan, 2014 2 commits
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Philipp Hachtmann authored
get_allocated_memblock_reserved_regions_info() should work if it is compiled in. Extended the ifdef around get_allocated_memblock_memory_regions_info() to include get_allocated_memblock_reserved_regions_info() as well. Similar changes in nobootmem.c/free_low_memory_core_early() where the two functions are called. [akpm@linux-foundation.org: cleanup] Signed-off-by:
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Philipp Hachtmann authored
When calling free_all_bootmem() the free areas under memblock's control are released to the buddy allocator. Additionally the reserved list is freed if it was reallocated by memblock. The same should apply for the memory list. Signed-off-by:
Tejun Heo <tj@kernel.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Tang Chen <tangchen@cn.fujitsu.com> Cc: Toshi Kani <toshi.kani@hp.com> Cc: Jianguo Wu <wujianguo@huawei.com> Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by:
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- 22 Jan, 2014 9 commits
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Grygorii Strashko authored
Check nid parameter and produce warning if it has deprecated MAX_NUMNODES value. Also re-assign NUMA_NO_NODE value to the nid parameter in this case. These will help to identify the wrong API usage (the caller) and make code simpler. Signed-off-by:
Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by:
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Santosh Shilimkar authored
Introduce memblock memory allocation APIs which allow to support PAE or LPAE extension on 32 bits archs where the physical memory start address can be beyond 4GB. In such cases, existing bootmem APIs which operate on 32 bit addresses won't work and needs memblock layer which operates on 64 bit addresses. So we add equivalent APIs so that we can replace usage of bootmem with memblock interfaces. Architectures already converted to NO_BOOTMEM use these new memblock interfaces. The architectures which are still not converted to NO_BOOTMEM continue to function as is because we still maintain the fal lback option of bootmem back-end supporting these new interfaces. So no functional change as such. In long run, once all the architectures moves to NO_BOOTMEM, we can get rid of bootmem layer completely. This is one step to remove the core code dependency with bootmem and also gives path for architectures to move away from bootmem. The proposed interface will became active if both CONFIG_HAVE_MEMBLOCK and CONFIG_NO_BOOTMEM are specified by arch. In case !CONFIG_NO_BOOTMEM, the memblock() wrappers will fallback to the existing bootmem apis so that arch's not converted to NO_BOOTMEM continue to work as is. The meaning of MEMBLOCK_ALLOC_ACCESSIBLE and MEMBLOCK_ALLOC_ANYWHERE is kept same. [akpm@linux-foundation.org: s/depricated/deprecated/] Signed-off-by:
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Grygorii Strashko authored
It's recommended to use NUMA_NO_NODE everywhere to select "process any node" behavior or to indicate that "no node id specified". Hence, update __next_free_mem_range*() API's to accept both NUMA_NO_NODE and MAX_NUMNODES, but emit warning once on MAX_NUMNODES, and correct corresponding API's documentation to describe new behavior. Also, update other memblock/nobootmem APIs where MAX_NUMNODES is used dirrectly. The change was suggested by Tejun Heo. Signed-off-by:
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Grygorii Strashko authored
Reorder parameters of memblock_find_in_range_node to be consistent with other memblock APIs. The change was suggested by Tejun Heo <tj@kernel.org>. Signed-off-by:
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Grygorii Strashko authored
Don't produce warning and interpret 0 as "default align" equal to SMP_CACHE_BYTES in case if caller of memblock_alloc_base_nid() doesn't specify alignment for the block (align == 0). This is done in preparation of introducing common memblock alloc interface to make code behavior consistent. More details are in below thread : https://lkml.org/lkml/2013/10/13/117 . Signed-off-by:
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Grygorii Strashko authored
Now the Nobootmem allocator will always try to free memory allocated for reserved memory regions (free_low_memory_core_early()) without taking into to account current memblock debugging configuration (CONFIG_ARCH_DISCARD_MEMBLOCK and CONFIG_DEBUG_FS state). As result if: - CONFIG_DEBUG_FS defined - CONFIG_ARCH_DISCARD_MEMBLOCK not defined; - reserved memory regions array have been resized during boot then: - memory allocated for reserved memory regions array will be freed to buddy allocator; - debug_fs entry "sys/kernel/debug/memblock/reserved" will show garbage instead of state of memory reservations. like: 0: 0x98393bc0..0x9a393bbf 1: 0xff120000..0xff11ffff 2: 0x00000000..0xffffffff Hence, do not free memory allocated for reserved memory regions if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_ARCH_DISCARD_MEMBLOCK). Signed-off-by:
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Tang Chen authored
Linux kernel cannot migrate pages used by the kernel. As a result, hotpluggable memory used by the kernel won't be able to be hot-removed. To solve this problem, the basic idea is to prevent memblock from allocating hotpluggable memory for the kernel at early time, and arrange all hotpluggable memory in ACPI SRAT(System Resource Affinity Table) as ZONE_MOVABLE when initializing zones. In the previous patches, we have marked hotpluggable memory regions with MEMBLOCK_HOTPLUG flag in memblock.memory. In this patch, we make memblock skip these hotpluggable memory regions in the default top-down allocation function if movable_node boot option is specified. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "Rafael J . Wysocki" <rjw@sisk.pl> Cc: Chen Tang <imtangchen@gmail.com> Cc: Gong Chen <gong.chen@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Len Brown <lenb@kernel.org> Cc: Liu Jiang <jiang.liu@huawei.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Taku Izumi <izumi.taku@jp.fujitsu.com> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Renninger <trenn@suse.de> Cc: Toshi Kani <toshi.kani@hp.com> Cc: Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com> Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by:
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Tang Chen authored
[sfr@canb.auug.org.au: fix powerpc build] Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Tang Chen authored
In find_hotpluggable_memory, once we find out a memory region which is hotpluggable, we want to mark them in memblock.memory. So that we could control memblock allocator not to allocte hotpluggable memory for the kernel later. To achieve this goal, we introduce MEMBLOCK_HOTPLUG flag to indicate the hotpluggable memory regions in memblock and a function memblock_mark_hotplug() to mark hotpluggable memory if we find one. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
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