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* [PATCH 1/2] mm: cma: NUMA node interface
@ 2020-04-03 10:18 Aslan Bakirov
  2020-04-03 10:18 ` [PATCH 2/2] mm: hugetlb: Use node interface of cma Aslan Bakirov
  0 siblings, 1 reply; 10+ messages in thread
From: Aslan Bakirov @ 2020-04-03 10:18 UTC (permalink / raw)
  To: akpm
  Cc: linux-kernel, linux-mm, kernel-team, riel, guro, mhocko, hannes,
	Aslan Bakirov

I've noticed that there is no interfaces exposed by CMA which would let me
to declare contigous memory on particular NUMA node.

This patchset adds the ability to try to allocate contiguous memory on
specific node. It will fallback to other nodes if the specified one
doesn't work.

Implement a new method for declaring contigous memory on particular node
and keep cma_declare_contiguous() as a wrapper.

Signed-off-by: Aslan Bakirov <aslan@fb.com>
---
 include/linux/cma.h      | 13 +++++++++++--
 include/linux/memblock.h |  3 +++
 mm/cma.c                 | 16 +++++++++-------
 mm/memblock.c            |  2 +-
 4 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/include/linux/cma.h b/include/linux/cma.h
index 190184b5ff32..eae834c2162f 100644
--- a/include/linux/cma.h
+++ b/include/linux/cma.h
@@ -24,10 +24,19 @@ extern phys_addr_t cma_get_base(const struct cma *cma);
 extern unsigned long cma_get_size(const struct cma *cma);
 extern const char *cma_get_name(const struct cma *cma);
 
-extern int __init cma_declare_contiguous(phys_addr_t base,
+extern int __init cma_declare_contiguous_nid(phys_addr_t base,
 			phys_addr_t size, phys_addr_t limit,
 			phys_addr_t alignment, unsigned int order_per_bit,
-			bool fixed, const char *name, struct cma **res_cma);
+			bool fixed, const char *name, struct cma **res_cma,
+			int nid);
+static inline int __init cma_declare_contiguous(phys_addr_t base,
+			phys_addr_t size, phys_addr_t limit,
+			phys_addr_t alignment, unsigned int order_per_bit,
+			bool fixed, const char *name, struct cma **res_cma)
+{
+	return cma_declare_contiguous_nid(base, size, limit, alignment,
+			order_per_bit, fixed, name, res_cma, NUMA_NO_NODE);
+}
 extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
 					unsigned int order_per_bit,
 					const char *name,
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 079d17d96410..6bc37a731d27 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -348,6 +348,9 @@ static inline int memblock_get_region_node(const struct memblock_region *r)
 
 phys_addr_t memblock_phys_alloc_range(phys_addr_t size, phys_addr_t align,
 				      phys_addr_t start, phys_addr_t end);
+phys_addr_t memblock_alloc_range_nid(phys_addr_t size,
+				      phys_addr_t align, phys_addr_t start,
+				      phys_addr_t end, int nid, bool exact_nid);
 phys_addr_t memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
 
 static inline phys_addr_t memblock_phys_alloc(phys_addr_t size,
diff --git a/mm/cma.c b/mm/cma.c
index be55d1988c67..6405af3dc118 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -220,7 +220,7 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
 }
 
 /**
- * cma_declare_contiguous() - reserve custom contiguous area
+ * cma_declare_contiguous_nid() - reserve custom contiguous area
  * @base: Base address of the reserved area optional, use 0 for any
  * @size: Size of the reserved area (in bytes),
  * @limit: End address of the reserved memory (optional, 0 for any).
@@ -229,6 +229,7 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
  * @fixed: hint about where to place the reserved area
  * @name: The name of the area. See function cma_init_reserved_mem()
  * @res_cma: Pointer to store the created cma region.
+ * @nid: nid of the free area to find, %NUMA_NO_NODE for any node
  *
  * This function reserves memory from early allocator. It should be
  * called by arch specific code once the early allocator (memblock or bootmem)
@@ -238,10 +239,11 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
  * If @fixed is true, reserve contiguous area at exactly @base.  If false,
  * reserve in range from @base to @limit.
  */
-int __init cma_declare_contiguous(phys_addr_t base,
+int __init cma_declare_contiguous_nid(phys_addr_t base,
 			phys_addr_t size, phys_addr_t limit,
 			phys_addr_t alignment, unsigned int order_per_bit,
-			bool fixed, const char *name, struct cma **res_cma)
+			bool fixed, const char *name, struct cma **res_cma,
+			int nid)
 {
 	phys_addr_t memblock_end = memblock_end_of_DRAM();
 	phys_addr_t highmem_start;
@@ -336,14 +338,14 @@ int __init cma_declare_contiguous(phys_addr_t base,
 		 * memory in case of failure.
 		 */
 		if (base < highmem_start && limit > highmem_start) {
-			addr = memblock_phys_alloc_range(size, alignment,
-							 highmem_start, limit);
+			addr = memblock_alloc_range_nid(size, alignment,
+					highmem_start, limit, nid, false);
 			limit = highmem_start;
 		}
 
 		if (!addr) {
-			addr = memblock_phys_alloc_range(size, alignment, base,
-							 limit);
+			addr = memblock_alloc_range_nid(size, alignment, base,
+					alimit, nid, false);
 			if (!addr) {
 				ret = -ENOMEM;
 				goto err;
diff --git a/mm/memblock.c b/mm/memblock.c
index 4d06bbaded0f..c79ba6f9920c 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1349,7 +1349,7 @@ __next_mem_pfn_range_in_zone(u64 *idx, struct zone *zone,
  * Return:
  * Physical address of allocated memory block on success, %0 on failure.
  */
-static phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
+phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
 					phys_addr_t align, phys_addr_t start,
 					phys_addr_t end, int nid,
 					bool exact_nid)
-- 
2.24.1



^ permalink raw reply related	[flat|nested] 10+ messages in thread

* [PATCH 2/2] mm: hugetlb: Use node interface of cma
  2020-04-03 10:18 [PATCH 1/2] mm: cma: NUMA node interface Aslan Bakirov
@ 2020-04-03 10:18 ` Aslan Bakirov
  2020-04-03 10:36   ` Michal Hocko
  0 siblings, 1 reply; 10+ messages in thread
From: Aslan Bakirov @ 2020-04-03 10:18 UTC (permalink / raw)
  To: akpm
  Cc: linux-kernel, linux-mm, kernel-team, riel, guro, mhocko, hannes,
	Aslan Bakirov

With introduction of numa node interface for CMA, this patch is for using that
interface for allocating memory on numa nodes if NUMA is configured.
This will be more efficient  and cleaner because first, instead of iterating
mem range of each numa node, cma_declare_contigueous_nid() will do
its own address finding if we pass 0 for  both min_pfn and max_pfn,
second, it can also handle caseswhere NUMA is not configured
by passing NUMA_NO_NODE as an argument.

In addition, checking if desired size of memory is available or not,
is happening in cma_declare_contiguous_nid()  because base and
limit will be determined there, since 0(any) for  base and
0(any) for limit is passed as argument to the function.

Signed-off-by: Aslan Bakirov <aslan@fb.com>
---
 mm/hugetlb.c | 40 +++++++++++-----------------------------
 1 file changed, 11 insertions(+), 29 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index b9f0c903c4cf..62989220c4ff 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -5573,42 +5573,24 @@ void __init hugetlb_cma_reserve(int order)
 
 	reserved = 0;
 	for_each_node_state(nid, N_ONLINE) {
-		unsigned long min_pfn = 0, max_pfn = 0;
 		int res;
-#ifdef CONFIG_NUMA
-		unsigned long start_pfn, end_pfn;
-		int i;
 
-		for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, NULL) {
-			if (!min_pfn)
-				min_pfn = start_pfn;
-			max_pfn = end_pfn;
-		}
-#else
-		min_pfn = min_low_pfn;
-		max_pfn = max_low_pfn;
-#endif
 		size = min(per_node, hugetlb_cma_size - reserved);
 		size = round_up(size, PAGE_SIZE << order);
-
-		if (size > ((max_pfn - min_pfn) << PAGE_SHIFT) / 2) {
-			pr_warn("hugetlb_cma: cma_area is too big, please try less than %lu MiB\n",
-				round_down(((max_pfn - min_pfn) << PAGE_SHIFT) *
-					   nr_online_nodes / 2 / SZ_1M,
-					   PAGE_SIZE << order));
-			break;
-		}
-
-		res = cma_declare_contiguous(PFN_PHYS(min_pfn), size,
-					     PFN_PHYS(max_pfn),
+		
+		
+#ifndef CONFIG_NUMA
+		nid = NUMA_NO_NODE
+#endif		
+		res = cma_declare_contiguous_nid(0, size,
+					     0, 
 					     PAGE_SIZE << order,
 					     0, false,
-					     "hugetlb", &hugetlb_cma[nid]);
+					     "hugetlb", &hugetlb_cma[nid], nid);		
+
 		if (res) {
-			phys_addr_t begpa = PFN_PHYS(min_pfn);
-			phys_addr_t endpa = PFN_PHYS(max_pfn);
-			pr_warn("%s: reservation failed: err %d, node %d, [%pap, %pap)\n",
-				__func__, res, nid, &begpa, &endpa);
+			pr_warn("%s: reservation failed: err %d, node %d\n",
+				__func__, res, nid);
 			break;
 		}
 
-- 
2.24.1



^ permalink raw reply related	[flat|nested] 10+ messages in thread

* Re: [PATCH 2/2] mm: hugetlb: Use node interface of cma
  2020-04-03 10:18 ` [PATCH 2/2] mm: hugetlb: Use node interface of cma Aslan Bakirov
@ 2020-04-03 10:36   ` Michal Hocko
  2020-04-03 11:21     ` Aslan Bakirov
  0 siblings, 1 reply; 10+ messages in thread
From: Michal Hocko @ 2020-04-03 10:36 UTC (permalink / raw)
  To: Aslan Bakirov
  Cc: akpm, linux-kernel, linux-mm, kernel-team, riel, guro, hannes

On Fri 03-04-20 03:18:43, Aslan Bakirov wrote:
> With introduction of numa node interface for CMA, this patch is for using that
> interface for allocating memory on numa nodes if NUMA is configured.
> This will be more efficient  and cleaner because first, instead of iterating
> mem range of each numa node, cma_declare_contigueous_nid() will do
> its own address finding if we pass 0 for  both min_pfn and max_pfn,
> second, it can also handle caseswhere NUMA is not configured
> by passing NUMA_NO_NODE as an argument.
> 
> In addition, checking if desired size of memory is available or not,
> is happening in cma_declare_contiguous_nid()  because base and
> limit will be determined there, since 0(any) for  base and
> 0(any) for limit is passed as argument to the function.

I have asked to merge this one with the original patch from Roman
several times but it seems this is not going to happen. But whatever.

You have likely missed my review feedback http://lkml.kernel.org/r/20200402172404.GV22681@dhcp22.suse.cz.
The ifdef CONFIG_NUMA for the nid definition is pointless.

> Signed-off-by: Aslan Bakirov <aslan@fb.com>

After fixing that, feel free to add
Acked-by: Michal Hocko <mhocko@suse.com>

> ---
>  mm/hugetlb.c | 40 +++++++++++-----------------------------
>  1 file changed, 11 insertions(+), 29 deletions(-)
> 
> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> index b9f0c903c4cf..62989220c4ff 100644
> --- a/mm/hugetlb.c
> +++ b/mm/hugetlb.c
> @@ -5573,42 +5573,24 @@ void __init hugetlb_cma_reserve(int order)
>  
>  	reserved = 0;
>  	for_each_node_state(nid, N_ONLINE) {
> -		unsigned long min_pfn = 0, max_pfn = 0;
>  		int res;
> -#ifdef CONFIG_NUMA
> -		unsigned long start_pfn, end_pfn;
> -		int i;
>  
> -		for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, NULL) {
> -			if (!min_pfn)
> -				min_pfn = start_pfn;
> -			max_pfn = end_pfn;
> -		}
> -#else
> -		min_pfn = min_low_pfn;
> -		max_pfn = max_low_pfn;
> -#endif
>  		size = min(per_node, hugetlb_cma_size - reserved);
>  		size = round_up(size, PAGE_SIZE << order);
> -
> -		if (size > ((max_pfn - min_pfn) << PAGE_SHIFT) / 2) {
> -			pr_warn("hugetlb_cma: cma_area is too big, please try less than %lu MiB\n",
> -				round_down(((max_pfn - min_pfn) << PAGE_SHIFT) *
> -					   nr_online_nodes / 2 / SZ_1M,
> -					   PAGE_SIZE << order));
> -			break;
> -		}
> -
> -		res = cma_declare_contiguous(PFN_PHYS(min_pfn), size,
> -					     PFN_PHYS(max_pfn),
> +		
> +		
> +#ifndef CONFIG_NUMA
> +		nid = NUMA_NO_NODE
> +#endif		

> +		res = cma_declare_contiguous_nid(0, size,
> +					     0, 
>  					     PAGE_SIZE << order,
>  					     0, false,
> -					     "hugetlb", &hugetlb_cma[nid]);
> +					     "hugetlb", &hugetlb_cma[nid], nid);		
> +
>  		if (res) {
> -			phys_addr_t begpa = PFN_PHYS(min_pfn);
> -			phys_addr_t endpa = PFN_PHYS(max_pfn);
> -			pr_warn("%s: reservation failed: err %d, node %d, [%pap, %pap)\n",
> -				__func__, res, nid, &begpa, &endpa);
> +			pr_warn("%s: reservation failed: err %d, node %d\n",
> +				__func__, res, nid);
>  			break;
>  		}
>  
> -- 
> 2.24.1

-- 
Michal Hocko
SUSE Labs


^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH 2/2] mm: hugetlb: Use node interface of cma
  2020-04-03 10:36   ` Michal Hocko
@ 2020-04-03 11:21     ` Aslan Bakirov
  0 siblings, 0 replies; 10+ messages in thread
From: Aslan Bakirov @ 2020-04-03 11:21 UTC (permalink / raw)
  To: Michal Hocko
  Cc: akpm, linux-kernel, linux-mm, Kernel Team, riel, Roman Gushchin, hannes

[-- Attachment #1: Type: text/plain, Size: 4494 bytes --]



________________________________
From: Michal Hocko <mhocko@kernel.org>
Sent: Friday, April 3, 2020 11:36 AM
To: Aslan Bakirov <aslan@fb.com>
Cc: akpm@linux-foundation.org <akpm@linux-foundation.org>; linux-kernel@vger.kernel.org <linux-kernel@vger.kernel.org>; linux-mm@kvack.org <linux-mm@kvack.org>; Kernel Team <Kernel-team@fb.com>; riel@surriel.com <riel@surriel.com>; Roman Gushchin <guro@fb.com>; hannes@cmpxchg.org <hannes@cmpxchg.org>
Subject: Re: [PATCH 2/2] mm: hugetlb: Use node interface of cma

On Fri 03-04-20 03:18:43, Aslan Bakirov wrote:
> With introduction of numa node interface for CMA, this patch is for using that
> interface for allocating memory on numa nodes if NUMA is configured.
> This will be more efficient  and cleaner because first, instead of iterating
> mem range of each numa node, cma_declare_contigueous_nid() will do
> its own address finding if we pass 0 for  both min_pfn and max_pfn,
> second, it can also handle caseswhere NUMA is not configured
> by passing NUMA_NO_NODE as an argument.
>
> In addition, checking if desired size of memory is available or not,
> is happening in cma_declare_contiguous_nid()  because base and
> limit will be determined there, since 0(any) for  base and
> 0(any) for limit is passed as argument to the function.

I have asked to merge this one with the original patch from Roman
several times but it seems this is not going to happen. But whatever.

You have likely missed my review feedback http://lkml.kernel.org/r/20200402172404.GV22681@dhcp22.suse.cz.
The ifdef CONFIG_NUMA for the nid definition is pointless.

> Signed-off-by: Aslan Bakirov <aslan@fb.com>

After fixing that, feel free to add
Acked-by: Michal Hocko <mhocko@suse.com>

Addressed  your comment, and updated the patch. Thanks Michal.

> ---
>  mm/hugetlb.c | 40 +++++++++++-----------------------------
>  1 file changed, 11 insertions(+), 29 deletions(-)
>
> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> index b9f0c903c4cf..62989220c4ff 100644
> --- a/mm/hugetlb.c
> +++ b/mm/hugetlb.c
> @@ -5573,42 +5573,24 @@ void __init hugetlb_cma_reserve(int order)
>
>        reserved = 0;
>        for_each_node_state(nid, N_ONLINE) {
> -             unsigned long min_pfn = 0, max_pfn = 0;
>                int res;
> -#ifdef CONFIG_NUMA
> -             unsigned long start_pfn, end_pfn;
> -             int i;
>
> -             for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, NULL) {
> -                     if (!min_pfn)
> -                             min_pfn = start_pfn;
> -                     max_pfn = end_pfn;
> -             }
> -#else
> -             min_pfn = min_low_pfn;
> -             max_pfn = max_low_pfn;
> -#endif
>                size = min(per_node, hugetlb_cma_size - reserved);
>                size = round_up(size, PAGE_SIZE << order);
> -
> -             if (size > ((max_pfn - min_pfn) << PAGE_SHIFT) / 2) {
> -                     pr_warn("hugetlb_cma: cma_area is too big, please try less than %lu MiB\n",
> -                             round_down(((max_pfn - min_pfn) << PAGE_SHIFT) *
> -                                        nr_online_nodes / 2 / SZ_1M,
> -                                        PAGE_SIZE << order));
> -                     break;
> -             }
> -
> -             res = cma_declare_contiguous(PFN_PHYS(min_pfn), size,
> -                                          PFN_PHYS(max_pfn),
> +
> +
> +#ifndef CONFIG_NUMA
> +             nid = NUMA_NO_NODE
> +#endif

> +             res = cma_declare_contiguous_nid(0, size,
> +                                          0,
>                                             PAGE_SIZE << order,
>                                             0, false,
> -                                          "hugetlb", &hugetlb_cma[nid]);
> +                                          "hugetlb", &hugetlb_cma[nid], nid);
> +
>                if (res) {
> -                     phys_addr_t begpa = PFN_PHYS(min_pfn);
> -                     phys_addr_t endpa = PFN_PHYS(max_pfn);
> -                     pr_warn("%s: reservation failed: err %d, node %d, [%pap, %pap)\n",
> -                             __func__, res, nid, &begpa, &endpa);
> +                     pr_warn("%s: reservation failed: err %d, node %d\n",
> +                             __func__, res, nid);
>                        break;
>                }
>
> --
> 2.24.1

--
Michal Hocko
SUSE Labs

[-- Attachment #2: Type: text/html, Size: 10980 bytes --]

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH 1/2] mm: cma: NUMA node interface
  2020-04-02 15:48 ` Vlastimil Babka
  2020-04-02 22:03   ` Aslan Bakirov
@ 2020-04-03 15:09   ` Roman Gushchin
  1 sibling, 0 replies; 10+ messages in thread
From: Roman Gushchin @ 2020-04-03 15:09 UTC (permalink / raw)
  To: Vlastimil Babka
  Cc: Aslan Bakirov, akpm, linux-kernel, linux-mm, kernel-team, riel,
	mhocko, hannes

On Thu, Apr 02, 2020 at 05:48:00PM +0200, Vlastimil Babka wrote:
> On 3/26/20 10:27 PM, Aslan Bakirov wrote:
> > I've noticed that there is no interfaces exposed by CMA which would let me
> > to declare contigous memory on particular NUMA node.
> > 
> > This patchset adds the ability to try to allocate contiguous memory on
> > specific node.

Hello, Vlastimil!

> 
> I would say more explicitly that 'try' here means it will fallback to other
> nodes if the specific one doesn't work. At least AFAICS that's what it does by
> calling memblock_alloc_range_nid() with exact_nid=false.

Hm, maybe we need exact_nid=true for this case? The whole point here is to
have a per-node cma zone, so if it's not possible to allocate one on the
specific node, maybe it's better to just skip it?

> 
> > Implement a new method for declaring contigous memory on particular node
> > and keep cma_declare_contiguous() as a wrapper.
> 
> Should there be also support for using this node spcification in the cma=X boot
> param?

I'd wait for a first real usecase. It's fairly easy to add one, and very hard to remove,
so I'd be conservative here.

Also, in the future we might want to allocate it automatically and shrink on demand.

Btw, thank you very much for gathering all patches for Michal.


Thanks!


^ permalink raw reply	[flat|nested] 10+ messages in thread

* [PATCH 1/2] mm: cma: NUMA node interface
@ 2020-04-03 11:18 Aslan Bakirov
  0 siblings, 0 replies; 10+ messages in thread
From: Aslan Bakirov @ 2020-04-03 11:18 UTC (permalink / raw)
  To: akpm
  Cc: linux-kernel, linux-mm, kernel-team, riel, guro, mhocko, hannes,
	Aslan Bakirov

I've noticed that there is no interfaces exposed by CMA which would let me
to declare contigous memory on particular NUMA node.

This patchset adds the ability to try to allocate contiguous memory on
specific node. It will fallback to other nodes if the specified one
doesn't work.

Implement a new method for declaring contigous memory on particular node
and keep cma_declare_contiguous() as a wrapper.

Signed-off-by: Aslan Bakirov <aslan@fb.com>
---
 include/linux/cma.h      | 13 +++++++++++--
 include/linux/memblock.h |  3 +++
 mm/cma.c                 | 16 +++++++++-------
 mm/memblock.c            |  2 +-
 4 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/include/linux/cma.h b/include/linux/cma.h
index 190184b5ff32..eae834c2162f 100644
--- a/include/linux/cma.h
+++ b/include/linux/cma.h
@@ -24,10 +24,19 @@ extern phys_addr_t cma_get_base(const struct cma *cma);
 extern unsigned long cma_get_size(const struct cma *cma);
 extern const char *cma_get_name(const struct cma *cma);
 
-extern int __init cma_declare_contiguous(phys_addr_t base,
+extern int __init cma_declare_contiguous_nid(phys_addr_t base,
 			phys_addr_t size, phys_addr_t limit,
 			phys_addr_t alignment, unsigned int order_per_bit,
-			bool fixed, const char *name, struct cma **res_cma);
+			bool fixed, const char *name, struct cma **res_cma,
+			int nid);
+static inline int __init cma_declare_contiguous(phys_addr_t base,
+			phys_addr_t size, phys_addr_t limit,
+			phys_addr_t alignment, unsigned int order_per_bit,
+			bool fixed, const char *name, struct cma **res_cma)
+{
+	return cma_declare_contiguous_nid(base, size, limit, alignment,
+			order_per_bit, fixed, name, res_cma, NUMA_NO_NODE);
+}
 extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
 					unsigned int order_per_bit,
 					const char *name,
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 079d17d96410..6bc37a731d27 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -348,6 +348,9 @@ static inline int memblock_get_region_node(const struct memblock_region *r)
 
 phys_addr_t memblock_phys_alloc_range(phys_addr_t size, phys_addr_t align,
 				      phys_addr_t start, phys_addr_t end);
+phys_addr_t memblock_alloc_range_nid(phys_addr_t size,
+				      phys_addr_t align, phys_addr_t start,
+				      phys_addr_t end, int nid, bool exact_nid);
 phys_addr_t memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
 
 static inline phys_addr_t memblock_phys_alloc(phys_addr_t size,
diff --git a/mm/cma.c b/mm/cma.c
index be55d1988c67..0463ad2ce06b 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -220,7 +220,7 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
 }
 
 /**
- * cma_declare_contiguous() - reserve custom contiguous area
+ * cma_declare_contiguous_nid() - reserve custom contiguous area
  * @base: Base address of the reserved area optional, use 0 for any
  * @size: Size of the reserved area (in bytes),
  * @limit: End address of the reserved memory (optional, 0 for any).
@@ -229,6 +229,7 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
  * @fixed: hint about where to place the reserved area
  * @name: The name of the area. See function cma_init_reserved_mem()
  * @res_cma: Pointer to store the created cma region.
+ * @nid: nid of the free area to find, %NUMA_NO_NODE for any node
  *
  * This function reserves memory from early allocator. It should be
  * called by arch specific code once the early allocator (memblock or bootmem)
@@ -238,10 +239,11 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
  * If @fixed is true, reserve contiguous area at exactly @base.  If false,
  * reserve in range from @base to @limit.
  */
-int __init cma_declare_contiguous(phys_addr_t base,
+int __init cma_declare_contiguous_nid(phys_addr_t base,
 			phys_addr_t size, phys_addr_t limit,
 			phys_addr_t alignment, unsigned int order_per_bit,
-			bool fixed, const char *name, struct cma **res_cma)
+			bool fixed, const char *name, struct cma **res_cma,
+			int nid)
 {
 	phys_addr_t memblock_end = memblock_end_of_DRAM();
 	phys_addr_t highmem_start;
@@ -336,14 +338,14 @@ int __init cma_declare_contiguous(phys_addr_t base,
 		 * memory in case of failure.
 		 */
 		if (base < highmem_start && limit > highmem_start) {
-			addr = memblock_phys_alloc_range(size, alignment,
-							 highmem_start, limit);
+			addr = memblock_alloc_range_nid(size, alignment,
+					highmem_start, limit, nid, false);
 			limit = highmem_start;
 		}
 
 		if (!addr) {
-			addr = memblock_phys_alloc_range(size, alignment, base,
-							 limit);
+			addr = memblock_alloc_range_nid(size, alignment, base,
+					limit, nid, false);
 			if (!addr) {
 				ret = -ENOMEM;
 				goto err;
diff --git a/mm/memblock.c b/mm/memblock.c
index 4d06bbaded0f..c79ba6f9920c 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1349,7 +1349,7 @@ __next_mem_pfn_range_in_zone(u64 *idx, struct zone *zone,
  * Return:
  * Physical address of allocated memory block on success, %0 on failure.
  */
-static phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
+phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
 					phys_addr_t align, phys_addr_t start,
 					phys_addr_t end, int nid,
 					bool exact_nid)
-- 
2.24.1



^ permalink raw reply related	[flat|nested] 10+ messages in thread

* Re: [PATCH 1/2] mm: cma: NUMA node interface
  2020-04-02 15:48 ` Vlastimil Babka
@ 2020-04-02 22:03   ` Aslan Bakirov
  2020-04-03 15:09   ` Roman Gushchin
  1 sibling, 0 replies; 10+ messages in thread
From: Aslan Bakirov @ 2020-04-02 22:03 UTC (permalink / raw)
  To: Vlastimil Babka
  Cc: Aslan Bakirov, akpm, linux-kernel, linux-mm, kernel-team, riel,
	Roman Gushchin, mhocko, hannes

[-- Attachment #1: Type: text/plain, Size: 2922 bytes --]

On Thu, Apr 2, 2020 at 4:48 PM Vlastimil Babka <vbabka@suse.cz> wrote:

> On 3/26/20 10:27 PM, Aslan Bakirov wrote:
> > I've noticed that there is no interfaces exposed by CMA which would let
> me
> > to declare contigous memory on particular NUMA node.
> >
> > This patchset adds the ability to try to allocate contiguous memory on
> > specific node.
>
> I would say more explicitly that 'try' here means it will fallback to other
> nodes if the specific one doesn't work. At least AFAICS that's what it
> does by
> calling memblock_alloc_range_nid() with exact_nid=false.
>

Thanks for the comments, Vlastimil. I created the next version with
mentioning fallback case in the changelog.

>
> > Implement a new method for declaring contigous memory on particular node
> > and keep cma_declare_contiguous() as a wrapper.
>
> Should there be also support for using this node spcification in the cma=X
> boot
> param?
>
> For this, I would wait for a real usecase for now, because adding it is
easy but removing is hard.


> > Signed-off-by: Aslan Bakirov <aslan@fb.com>
>
> ...
>
> > --- a/mm/cma.c
> > +++ b/mm/cma.c
> > @@ -220,7 +220,7 @@ int __init cma_init_reserved_mem(phys_addr_t base,
> phys_addr_t size,
> >  }
> >
> >  /**
> > - * cma_declare_contiguous() - reserve custom contiguous area
> > + * cma_declare_contiguous_nid() - reserve custom contiguous area
> >   * @base: Base address of the reserved area optional, use 0 for any
> >   * @size: Size of the reserved area (in bytes),
> >   * @limit: End address of the reserved memory (optional, 0 for any).
> > @@ -229,6 +229,7 @@ int __init cma_init_reserved_mem(phys_addr_t base,
> phys_addr_t size,
> >   * @fixed: hint about where to place the reserved area
> >   * @name: The name of the area. See function cma_init_reserved_mem()
> >   * @res_cma: Pointer to store the created cma region.
> > + * @nid: nid of the free area to find, %NUMA_NO_NODE for any node
>
> The bit about fallback should be also specified here.
>
> >   *
> >   * This function reserves memory from early allocator. It should be
> >   * called by arch specific code once the early allocator (memblock or
> bootmem)
> > @@ -238,10 +239,10 @@ int __init cma_init_reserved_mem(phys_addr_t base,
> phys_addr_t size,
> >   * If @fixed is true, reserve contiguous area at exactly @base.  If
> false,
> >   * reserve in range from @base to @limit.
> >   */
> > -int __init cma_declare_contiguous(phys_addr_t base,
> > +int __init cma_declare_contiguous_nid(phys_addr_t base,
> >                       phys_addr_t size, phys_addr_t limit,
> >                       phys_addr_t alignment, unsigned int order_per_bit,
> > -                     bool fixed, const char *name, struct cma **res_cma)
> > +                     bool fixed, const char *name, struct cma
> **res_cma, int nid)
> >  {
> >       phys_addr_t memblock_end = memblock_end_of_DRAM();
> >       phys_addr_t highmem_start;
>
>

[-- Attachment #2: Type: text/html, Size: 3970 bytes --]

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH 1/2] mm: cma: NUMA node interface
  2020-03-26 21:27 Aslan Bakirov
  2020-03-27  8:02 ` Michal Hocko
@ 2020-04-02 15:48 ` Vlastimil Babka
  2020-04-02 22:03   ` Aslan Bakirov
  2020-04-03 15:09   ` Roman Gushchin
  1 sibling, 2 replies; 10+ messages in thread
From: Vlastimil Babka @ 2020-04-02 15:48 UTC (permalink / raw)
  To: Aslan Bakirov, akpm
  Cc: linux-kernel, linux-mm, kernel-team, riel, guro, mhocko, hannes

On 3/26/20 10:27 PM, Aslan Bakirov wrote:
> I've noticed that there is no interfaces exposed by CMA which would let me
> to declare contigous memory on particular NUMA node.
> 
> This patchset adds the ability to try to allocate contiguous memory on
> specific node.

I would say more explicitly that 'try' here means it will fallback to other
nodes if the specific one doesn't work. At least AFAICS that's what it does by
calling memblock_alloc_range_nid() with exact_nid=false.

> Implement a new method for declaring contigous memory on particular node
> and keep cma_declare_contiguous() as a wrapper.

Should there be also support for using this node spcification in the cma=X boot
param?

> Signed-off-by: Aslan Bakirov <aslan@fb.com>

...

> --- a/mm/cma.c
> +++ b/mm/cma.c
> @@ -220,7 +220,7 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
>  }
>  
>  /**
> - * cma_declare_contiguous() - reserve custom contiguous area
> + * cma_declare_contiguous_nid() - reserve custom contiguous area
>   * @base: Base address of the reserved area optional, use 0 for any
>   * @size: Size of the reserved area (in bytes),
>   * @limit: End address of the reserved memory (optional, 0 for any).
> @@ -229,6 +229,7 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
>   * @fixed: hint about where to place the reserved area
>   * @name: The name of the area. See function cma_init_reserved_mem()
>   * @res_cma: Pointer to store the created cma region.
> + * @nid: nid of the free area to find, %NUMA_NO_NODE for any node

The bit about fallback should be also specified here.

>   *
>   * This function reserves memory from early allocator. It should be
>   * called by arch specific code once the early allocator (memblock or bootmem)
> @@ -238,10 +239,10 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
>   * If @fixed is true, reserve contiguous area at exactly @base.  If false,
>   * reserve in range from @base to @limit.
>   */
> -int __init cma_declare_contiguous(phys_addr_t base,
> +int __init cma_declare_contiguous_nid(phys_addr_t base,
>  			phys_addr_t size, phys_addr_t limit,
>  			phys_addr_t alignment, unsigned int order_per_bit,
> -			bool fixed, const char *name, struct cma **res_cma)
> +			bool fixed, const char *name, struct cma **res_cma, int nid)
>  {
>  	phys_addr_t memblock_end = memblock_end_of_DRAM();
>  	phys_addr_t highmem_start;


^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH 1/2] mm: cma: NUMA node interface
  2020-03-26 21:27 Aslan Bakirov
@ 2020-03-27  8:02 ` Michal Hocko
  2020-04-02 15:48 ` Vlastimil Babka
  1 sibling, 0 replies; 10+ messages in thread
From: Michal Hocko @ 2020-03-27  8:02 UTC (permalink / raw)
  To: Aslan Bakirov
  Cc: akpm, linux-kernel, linux-mm, kernel-team, riel, guro, hannes

On Thu 26-03-20 14:27:17, Aslan Bakirov wrote:
> I've noticed that there is no interfaces exposed by CMA which would let me
> to declare contigous memory on particular NUMA node.
> 
> This patchset adds the ability to try to allocate contiguous memory on
> specific node.
> 
> Implement a new method for declaring contigous memory on particular node
> and keep cma_declare_contiguous() as a wrapper.

I am not an expert on CMA but this looks very reasonable to me.

> Signed-off-by: Aslan Bakirov <aslan@fb.com>
> ---
>  include/linux/cma.h      | 14 ++++++++++++--
>  include/linux/memblock.h |  3 +++
>  mm/cma.c                 | 15 ++++++++-------
>  mm/memblock.c            |  2 +-
>  4 files changed, 24 insertions(+), 10 deletions(-)
> 
> diff --git a/include/linux/cma.h b/include/linux/cma.h
> index 190184b5ff32..9512229744e0 100644
> --- a/include/linux/cma.h
> +++ b/include/linux/cma.h
> @@ -24,10 +24,20 @@ extern phys_addr_t cma_get_base(const struct cma *cma);
>  extern unsigned long cma_get_size(const struct cma *cma);
>  extern const char *cma_get_name(const struct cma *cma);
>  
> -extern int __init cma_declare_contiguous(phys_addr_t base,
> +extern int __init cma_declare_contiguous_nid(phys_addr_t base,
>  			phys_addr_t size, phys_addr_t limit,
>  			phys_addr_t alignment, unsigned int order_per_bit,
> -			bool fixed, const char *name, struct cma **res_cma);
> +			bool fixed, const char *name, struct cma **res_cma,
> +			int nid);
> +static inline int __init cma_declare_contiguous(phys_addr_t base,
> +			phys_addr_t size, phys_addr_t limit,
> +			phys_addr_t alignment, unsigned int order_per_bit,
> +			bool fixed, const char *name, struct cma **res_cma)
> +			{
> +				return cma_declare_contiguous_nid(base, size,
> +						limit, alignment, order_per_bit,
> +						fixed, name, res_cma, NUMA_NO_NODE);
> +			}
>  extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
>  					unsigned int order_per_bit,
>  					const char *name,
> diff --git a/include/linux/memblock.h b/include/linux/memblock.h
> index 079d17d96410..f5878ed25e6e 100644
> --- a/include/linux/memblock.h
> +++ b/include/linux/memblock.h
> @@ -348,6 +348,9 @@ static inline int memblock_get_region_node(const struct memblock_region *r)
>  
>  phys_addr_t memblock_phys_alloc_range(phys_addr_t size, phys_addr_t align,
>  				      phys_addr_t start, phys_addr_t end);
> +phys_addr_t memblock_alloc_range_nid(phys_addr_t size,
> +					  phys_addr_t align, phys_addr_t start,
> +					  phys_addr_t end, int nid, bool exact_nid);
>  phys_addr_t memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
>  
>  static inline phys_addr_t memblock_phys_alloc(phys_addr_t size,
> diff --git a/mm/cma.c b/mm/cma.c
> index be55d1988c67..2300669b4253 100644
> --- a/mm/cma.c
> +++ b/mm/cma.c
> @@ -220,7 +220,7 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
>  }
>  
>  /**
> - * cma_declare_contiguous() - reserve custom contiguous area
> + * cma_declare_contiguous_nid() - reserve custom contiguous area
>   * @base: Base address of the reserved area optional, use 0 for any
>   * @size: Size of the reserved area (in bytes),
>   * @limit: End address of the reserved memory (optional, 0 for any).
> @@ -229,6 +229,7 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
>   * @fixed: hint about where to place the reserved area
>   * @name: The name of the area. See function cma_init_reserved_mem()
>   * @res_cma: Pointer to store the created cma region.
> + * @nid: nid of the free area to find, %NUMA_NO_NODE for any node
>   *
>   * This function reserves memory from early allocator. It should be
>   * called by arch specific code once the early allocator (memblock or bootmem)
> @@ -238,10 +239,10 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
>   * If @fixed is true, reserve contiguous area at exactly @base.  If false,
>   * reserve in range from @base to @limit.
>   */
> -int __init cma_declare_contiguous(phys_addr_t base,
> +int __init cma_declare_contiguous_nid(phys_addr_t base,
>  			phys_addr_t size, phys_addr_t limit,
>  			phys_addr_t alignment, unsigned int order_per_bit,
> -			bool fixed, const char *name, struct cma **res_cma)
> +			bool fixed, const char *name, struct cma **res_cma, int nid)
>  {
>  	phys_addr_t memblock_end = memblock_end_of_DRAM();
>  	phys_addr_t highmem_start;
> @@ -336,14 +337,14 @@ int __init cma_declare_contiguous(phys_addr_t base,
>  		 * memory in case of failure.
>  		 */
>  		if (base < highmem_start && limit > highmem_start) {
> -			addr = memblock_phys_alloc_range(size, alignment,
> -							 highmem_start, limit);
> +			addr = memblock_alloc_range_nid(size, alignment,
> +							 highmem_start, limit, nid, false);
>  			limit = highmem_start;
>  		}
>  
>  		if (!addr) {
> -			addr = memblock_phys_alloc_range(size, alignment, base,
> -							 limit);
> +			addr = memblock_alloc_range_nid(size, alignment, base,
> +							 limit, nid, false);
>  			if (!addr) {
>  				ret = -ENOMEM;
>  				goto err;
> diff --git a/mm/memblock.c b/mm/memblock.c
> index 4d06bbaded0f..c79ba6f9920c 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -1349,7 +1349,7 @@ __next_mem_pfn_range_in_zone(u64 *idx, struct zone *zone,
>   * Return:
>   * Physical address of allocated memory block on success, %0 on failure.
>   */
> -static phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
> +phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
>  					phys_addr_t align, phys_addr_t start,
>  					phys_addr_t end, int nid,
>  					bool exact_nid)
> -- 
> 2.17.1

-- 
Michal Hocko
SUSE Labs


^ permalink raw reply	[flat|nested] 10+ messages in thread

* [PATCH 1/2] mm: cma: NUMA node interface
@ 2020-03-26 21:27 Aslan Bakirov
  2020-03-27  8:02 ` Michal Hocko
  2020-04-02 15:48 ` Vlastimil Babka
  0 siblings, 2 replies; 10+ messages in thread
From: Aslan Bakirov @ 2020-03-26 21:27 UTC (permalink / raw)
  To: akpm
  Cc: linux-kernel, linux-mm, kernel-team, riel, guro, mhocko, hannes,
	Aslan Bakirov

I've noticed that there is no interfaces exposed by CMA which would let me
to declare contigous memory on particular NUMA node.

This patchset adds the ability to try to allocate contiguous memory on
specific node.

Implement a new method for declaring contigous memory on particular node
and keep cma_declare_contiguous() as a wrapper.

Signed-off-by: Aslan Bakirov <aslan@fb.com>
---
 include/linux/cma.h      | 14 ++++++++++++--
 include/linux/memblock.h |  3 +++
 mm/cma.c                 | 15 ++++++++-------
 mm/memblock.c            |  2 +-
 4 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/include/linux/cma.h b/include/linux/cma.h
index 190184b5ff32..9512229744e0 100644
--- a/include/linux/cma.h
+++ b/include/linux/cma.h
@@ -24,10 +24,20 @@ extern phys_addr_t cma_get_base(const struct cma *cma);
 extern unsigned long cma_get_size(const struct cma *cma);
 extern const char *cma_get_name(const struct cma *cma);
 
-extern int __init cma_declare_contiguous(phys_addr_t base,
+extern int __init cma_declare_contiguous_nid(phys_addr_t base,
 			phys_addr_t size, phys_addr_t limit,
 			phys_addr_t alignment, unsigned int order_per_bit,
-			bool fixed, const char *name, struct cma **res_cma);
+			bool fixed, const char *name, struct cma **res_cma,
+			int nid);
+static inline int __init cma_declare_contiguous(phys_addr_t base,
+			phys_addr_t size, phys_addr_t limit,
+			phys_addr_t alignment, unsigned int order_per_bit,
+			bool fixed, const char *name, struct cma **res_cma)
+			{
+				return cma_declare_contiguous_nid(base, size,
+						limit, alignment, order_per_bit,
+						fixed, name, res_cma, NUMA_NO_NODE);
+			}
 extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
 					unsigned int order_per_bit,
 					const char *name,
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 079d17d96410..f5878ed25e6e 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -348,6 +348,9 @@ static inline int memblock_get_region_node(const struct memblock_region *r)
 
 phys_addr_t memblock_phys_alloc_range(phys_addr_t size, phys_addr_t align,
 				      phys_addr_t start, phys_addr_t end);
+phys_addr_t memblock_alloc_range_nid(phys_addr_t size,
+					  phys_addr_t align, phys_addr_t start,
+					  phys_addr_t end, int nid, bool exact_nid);
 phys_addr_t memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
 
 static inline phys_addr_t memblock_phys_alloc(phys_addr_t size,
diff --git a/mm/cma.c b/mm/cma.c
index be55d1988c67..2300669b4253 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -220,7 +220,7 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
 }
 
 /**
- * cma_declare_contiguous() - reserve custom contiguous area
+ * cma_declare_contiguous_nid() - reserve custom contiguous area
  * @base: Base address of the reserved area optional, use 0 for any
  * @size: Size of the reserved area (in bytes),
  * @limit: End address of the reserved memory (optional, 0 for any).
@@ -229,6 +229,7 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
  * @fixed: hint about where to place the reserved area
  * @name: The name of the area. See function cma_init_reserved_mem()
  * @res_cma: Pointer to store the created cma region.
+ * @nid: nid of the free area to find, %NUMA_NO_NODE for any node
  *
  * This function reserves memory from early allocator. It should be
  * called by arch specific code once the early allocator (memblock or bootmem)
@@ -238,10 +239,10 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
  * If @fixed is true, reserve contiguous area at exactly @base.  If false,
  * reserve in range from @base to @limit.
  */
-int __init cma_declare_contiguous(phys_addr_t base,
+int __init cma_declare_contiguous_nid(phys_addr_t base,
 			phys_addr_t size, phys_addr_t limit,
 			phys_addr_t alignment, unsigned int order_per_bit,
-			bool fixed, const char *name, struct cma **res_cma)
+			bool fixed, const char *name, struct cma **res_cma, int nid)
 {
 	phys_addr_t memblock_end = memblock_end_of_DRAM();
 	phys_addr_t highmem_start;
@@ -336,14 +337,14 @@ int __init cma_declare_contiguous(phys_addr_t base,
 		 * memory in case of failure.
 		 */
 		if (base < highmem_start && limit > highmem_start) {
-			addr = memblock_phys_alloc_range(size, alignment,
-							 highmem_start, limit);
+			addr = memblock_alloc_range_nid(size, alignment,
+							 highmem_start, limit, nid, false);
 			limit = highmem_start;
 		}
 
 		if (!addr) {
-			addr = memblock_phys_alloc_range(size, alignment, base,
-							 limit);
+			addr = memblock_alloc_range_nid(size, alignment, base,
+							 limit, nid, false);
 			if (!addr) {
 				ret = -ENOMEM;
 				goto err;
diff --git a/mm/memblock.c b/mm/memblock.c
index 4d06bbaded0f..c79ba6f9920c 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1349,7 +1349,7 @@ __next_mem_pfn_range_in_zone(u64 *idx, struct zone *zone,
  * Return:
  * Physical address of allocated memory block on success, %0 on failure.
  */
-static phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
+phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
 					phys_addr_t align, phys_addr_t start,
 					phys_addr_t end, int nid,
 					bool exact_nid)
-- 
2.17.1



^ permalink raw reply related	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2020-04-03 15:10 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-04-03 10:18 [PATCH 1/2] mm: cma: NUMA node interface Aslan Bakirov
2020-04-03 10:18 ` [PATCH 2/2] mm: hugetlb: Use node interface of cma Aslan Bakirov
2020-04-03 10:36   ` Michal Hocko
2020-04-03 11:21     ` Aslan Bakirov
  -- strict thread matches above, loose matches on Subject: below --
2020-04-03 11:18 [PATCH 1/2] mm: cma: NUMA node interface Aslan Bakirov
2020-03-26 21:27 Aslan Bakirov
2020-03-27  8:02 ` Michal Hocko
2020-04-02 15:48 ` Vlastimil Babka
2020-04-02 22:03   ` Aslan Bakirov
2020-04-03 15:09   ` Roman Gushchin

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