but also
prevents holding a large lock simultaneously.
Signed-off-by: Ho-Ren (Jack) Chuang
Signed-off-by: Hao Xiang
---
drivers/acpi/numa/hmat.c | 11 ++
drivers/dax/kmem.c | 13 +--
include/linux/acpi.h | 6
include/linux/memory-tiers.h | 8 +
mm/memory
tead of modifying it
-v1:
*
https://lore.kernel.org/linux-mm/20240301082248.3456086-1-horenchu...@bytedance.com/T/
Ho-Ren (Jack) Chuang (1):
memory tier: acpi/hmat: create CPUless memory tiers after obtaining
HMAT info
drivers/acpi/numa/hmat.c | 11 ++
drivers/dax/kmem.c
I'm working on V3. Thanks for Ying's feedback.
cc: sthanne...@micron.com
On Thu, Mar 14, 2024 at 12:54 AM Huang, Ying wrote:
>
> "Ho-Ren (Jack) Chuang" writes:
>
> > On Tue, Mar 12, 2024 at 2:21 AM Huang, Ying wrote:
> >>
> >> "Ho-Ren
On Tue, Mar 12, 2024 at 2:21 AM Huang, Ying wrote:
>
> "Ho-Ren (Jack) Chuang" writes:
>
> > The current implementation treats emulated memory devices, such as
> > CXL1.1 type3 memory, as normal DRAM when they are emulated as normal memory
> > (E820_TYPE_RAM).
On Wed, Mar 20, 2024 at 12:15 AM Huang, Ying wrote:
>
> "Ho-Ren (Jack) Chuang" writes:
>
> > The current implementation treats emulated memory devices, such as
> > CXL1.1 type3 memory, as normal DRAM when they are emulated as normal memory
> > (E820_TYPE_
to be managed,
a default memory type is created for storing all memory types that are
not initialized by device drivers and as a fallback.
Signed-off-by: Ho-Ren (Jack) Chuang
Signed-off-by: Hao Xiang
---
mm/memory-tiers.c | 73 ---
1 file changed, 63
Since different memory devices require finding, allocating, and putting
memory types, these common steps are abstracted in this patch,
enhancing the scalability and conciseness of the code.
Signed-off-by: Ho-Ren (Jack) Chuang
---
drivers/dax/kmem.c | 20 ++--
include
97111-1-horenchu...@bytedance.com/T/#u
-v1:
*
https://lore.kernel.org/lkml/20240301082248.3456086-1-horenchu...@bytedance.com/T/#u
Ho-Ren (Jack) Chuang (2):
memory tier: dax/kmem: introduce an abstract layer for finding,
allocating, and putting memory types
memory tier: create CPUless memor
type is created for storing all memory types that are
not initialized by device drivers and as a fallback.
Signed-off-by: Ho-Ren (Jack) Chuang
Signed-off-by: Hao Xiang
---
drivers/dax/kmem.c | 13 +
include/linux/memory-tiers.h | 7 +++
mm/memory-tiers.c| 94
xpected way to use set_node_memory_tier instead of modifying it
*
https://lore.kernel.org/lkml/20240312061729.1997111-1-horenchu...@bytedance.com/T/#u
-v1:
*
https://lore.kernel.org/lkml/20240301082248.3456086-1-horenchu...@bytedance.com/T/#u
Ho-Ren (Jack) Chuang (2):
memory tier: dax/kmem:
Abstract `kmem_put_memory_types()` into `mt_put_memory_types()` to
accommodate various memory types and enhance flexibility,
similar to `mt_find_alloc_memory_type()`.
Signed-off-by: Ho-Ren (Jack) Chuang
---
drivers/dax/kmem.c | 7 +--
include/linux/memory-tiers.h | 6 ++
mm
On Fri, Mar 22, 2024 at 1:41 AM Huang, Ying wrote:
>
> "Ho-Ren (Jack) Chuang" writes:
>
> > The current implementation treats emulated memory devices, such as
> > CXL1.1 type3 memory, as normal DRAM when they are emulated as normal memory
> > (E820_TYPE_RAM).
On Mon, Mar 25, 2024 at 8:08 PM Huang, Ying wrote:
>
> "Ho-Ren (Jack) Chuang" writes:
>
> > On Fri, Mar 22, 2024 at 1:41 AM Huang, Ying wrote:
> >>
> >> "Ho-Ren (Jack) Chuang" writes:
> >>
> >> > The current impleme
On Tue, Mar 26, 2024 at 10:52 PM Huang, Ying wrote:
>
> "Ho-Ren (Jack) Chuang" writes:
>
> > The current implementation treats emulated memory devices, such as
> > CXL1.1 type3 memory, as normal DRAM when they are emulated as normal memory
> > (E820_TYPE_
Since different memory devices require finding, allocating, and putting
memory types, these common steps are abstracted in this patch,
enhancing the scalability and conciseness of the code.
Signed-off-by: Ho-Ren (Jack) Chuang
---
drivers/dax/kmem.c | 20 ++--
include
`
Because an error path was not handled properly in `mt_perf_to_adistance`,
unlock before returning the error.
Signed-off-by: Ho-Ren (Jack) Chuang
Signed-off-by: Hao Xiang
---
mm/memory-tiers.c | 85 +++
1 file changed, 72 insertions(+), 13 deletions
nel.org/lkml/20240312061729.1997111-1-horenchu...@bytedance.com/T/#u
-v1:
*
https://lore.kernel.org/lkml/20240301082248.3456086-1-horenchu...@bytedance.com/T/#u
Ho-Ren (Jack) Chuang (2):
memory tier: dax/kmem: introduce an abstract layer for finding,
allocating, and putting memory types
On Wed, Mar 27, 2024 at 6:37 PM Huang, Ying wrote:
>
> "Ho-Ren (Jack) Chuang" writes:
>
> [snip]
>
> > @@ -655,6 +672,34 @@ void mt_put_memory_types(struct list_head
> > *memory_types)
> > }
> > EXPORT_SYMBOL_GPL(mt_put_memory_types);
>
to be managed,
a default memory type is created for storing all memory types that are
not initialized by device drivers and as a fallback.
Signed-off-by: Ho-Ren (Jack) Chuang
Signed-off-by: Hao Xiang
Reviewed-by: "Huang, Ying"
---
include/linux/memory-tiers.h | 5 +-
mm/memo
#u
-v1:
*
https://lore.kernel.org/lkml/20240301082248.3456086-1-horenchu...@bytedance.com/T/#u
Ho-Ren (Jack) Chuang (2):
memory tier: dax/kmem: introduce an abstract layer for finding,
allocating, and putting memory types
memory tier: create CPUless memory tiers after obtaining HMAT info
d
Since different memory devices require finding, allocating, and putting
memory types, these common steps are abstracted in this patch,
enhancing the scalability and conciseness of the code.
Signed-off-by: Ho-Ren (Jack) Chuang
Reviewed-by: "Huang, Ying"
---
drivers/dax/kmem.c
Hi SeongJae,
On Mon, Apr 1, 2024 at 11:27 AM Ho-Ren (Jack) Chuang
wrote:
>
> Hi SeongJae,
>
> On Sun, Mar 31, 2024 at 12:09 PM SeongJae Park wrote:
> >
> > Hi Ho-Ren,
> >
> > On Fri, 29 Mar 2024 05:33:52 + "Ho-Ren (Jack) Chuang"
> > wro
Hi Jonathan,
Thanks for your feedback. I will fix them (inlined) in the next V11.
No worries, it's never too late!
On Wed, Apr 3, 2024 at 9:52 AM Jonathan Cameron
wrote:
>
> On Tue, 2 Apr 2024 00:17:37 +0000
> "Ho-Ren (Jack) Chuang" wrote:
>
> > Since different me
RAM);
> > + default_dram_type = mt_find_alloc_memory_type(MEMTIER_ADISTANCE_DRAM,
> > +
> > _memory_types);
>
> Unusual indenting. Align with just after (
>
Aligning with "(" will exceed 100 columns. Would that be acceptable?
> > if (IS_ERR(default_dram_type))
> > panic("%s() failed to allocate default DRAM tier\n",
> > __func__);
> >
> > @@ -868,6 +921,14 @@ static int __init memory_tier_init(void)
> >* types assigned.
> >*/
> > for_each_node_state(node, N_MEMORY) {
> > + if (!node_state(node, N_CPU))
> > + /*
> > + * Defer memory tier initialization on CPUless numa
> > nodes.
> > + * These will be initialized after firmware and
> > devices are
>
> I think this wraps at just over 80 chars. Seems silly to wrap so tightly and
> not
> quite fit under 80. (this is about 83 chars.
>
I can fix this.
I have a question. From my patch, this is <80 chars. However,
in an email, this is >80 chars. Does that mean we need to
count the number of chars in an email, not in a patch? Or if I
missed something? like vim configuration or?
> > + * initialized.
> > + */
> > + continue;
> > +
> > memtier = set_node_memory_tier(node);
> > if (IS_ERR(memtier))
> > /*
>
--
Best regards,
Ho-Ren (Jack) Chuang
莊賀任
r character
> ruler at the top of the window.
>
> I wonder if you have a different tab indent size? The kernel uses 8
> characters. It might explain the few other odd indents if perhaps
> you have it at 4 in your editor?
>
> https://www.kernel.org/doc/html/v4.10/process/coding-style.html
>
Got it. I was using tab=4. I will change to 8. Thanks!
> Jonathan
>
> >
> > > > + * initialized.
> > > > + */
> > > > + continue;
> > > > +
> > > > memtier = set_node_memory_tier(node);
> > > > if (IS_ERR(memtier))
> > > > /*
> > >
> >
> >
>
--
Best regards,
Ho-Ren (Jack) Chuang
莊賀任
to be managed,
a default memory type is created for storing all memory types that are
not initialized by device drivers and as a fallback.
Signed-off-by: Ho-Ren (Jack) Chuang
Signed-off-by: Hao Xiang
Reviewed-by: "Huang, Ying"
---
mm/memory-ti
Since different memory devices require finding, allocating, and putting
memory types, these common steps are abstracted in this patch,
enhancing the scalability and conciseness of the code.
Signed-off-by: Ho-Ren (Jack) Chuang
Reviewed-by: "Huang, Ying"
---
drivers/dax/kmem.c
997111-1-horenchu...@bytedance.com/T/#u
-v1:
*
https://lore.kernel.org/lkml/20240301082248.3456086-1-horenchu...@bytedance.com/T/#u
Ho-Ren (Jack) Chuang (2):
memory tier: dax/kmem: introduce an abstract layer for finding,
allocating, and putting memory types
memory tier: create CPUless m
Hi Jonathan,
On Tue, Apr 9, 2024 at 9:12 AM Jonathan Cameron
wrote:
>
> On Fri, 5 Apr 2024 15:43:47 -0700
> "Ho-Ren (Jack) Chuang" wrote:
>
> > On Fri, Apr 5, 2024 at 7:03 AM Jonathan Cameron
> > wrote:
> > >
> > > On Fri, 5 Apr 202
Hi Jonathan,
On Fri, Apr 5, 2024 at 6:56 AM Jonathan Cameron
wrote:
>
> On Fri, 5 Apr 2024 00:07:05 +0000
> "Ho-Ren (Jack) Chuang" wrote:
>
> > Since different memory devices require finding, allocating, and putting
> > memory types, these common
Hi SeongJae,
On Sun, Mar 31, 2024 at 12:09 PM SeongJae Park wrote:
>
> Hi Ho-Ren,
>
> On Fri, 29 Mar 2024 05:33:52 +0000 "Ho-Ren (Jack) Chuang"
> wrote:
>
> > Since different memory devices require finding, allocating, and putting
> > memory
On Fri, Apr 5, 2024 at 7:03 AM Jonathan Cameron
wrote:
>
> On Fri, 5 Apr 2024 00:07:06 +0000
> "Ho-Ren (Jack) Chuang" wrote:
>
> > The current implementation treats emulated memory devices, such as
> > CXL1.1 type3 memory, as normal DRAM when
to be managed,
a default memory type is created for storing all memory types that are
not initialized by device drivers and as a fallback.
Signed-off-by: Ho-Ren (Jack) Chuang
Signed-off-by: Hao Xiang
---
mm/memory-tiers.c | 94 +++
1 file changed, 78
Since different memory devices require finding, allocating, and putting
memory types, these common steps are abstracted in this patch,
enhancing the scalability and conciseness of the code.
Signed-off-by: Ho-Ren (Jack) Chuang
---
drivers/dax/kmem.c | 20 ++--
include
/#u
-v1:
*
https://lore.kernel.org/lkml/20240301082248.3456086-1-horenchu...@bytedance.com/T/#u
Ho-Ren (Jack) Chuang (2):
memory tier: dax/kmem: introduce an abstract layer for finding,
allocating, and putting memory types
memory tier: create CPUless memory tiers after obtaining HMAT info
driv
to be managed,
a default memory type is created for storing all memory types that are
not initialized by device drivers and as a fallback.
Signed-off-by: Ho-Ren (Jack) Chuang
Signed-off-by: Hao Xiang
Reviewed-by: "Huang, Ying"
---
mm/memory-ti
Since different memory devices require finding, allocating, and putting
memory types, these common steps are abstracted in this patch,
enhancing the scalability and conciseness of the code.
Signed-off-by: Ho-Ren (Jack) Chuang
Reviewed-by: "Huang, Ying"
---
drivers/dax/kmem.c
ted way to use set_node_memory_tier instead of modifying it
*
https://lore.kernel.org/lkml/20240312061729.1997111-1-horenchu...@bytedance.com/T/#u
-v1:
*
https://lore.kernel.org/lkml/20240301082248.3456086-1-horenchu...@bytedance.com/T/#u
Ho-Ren (Jack) Chuang (2):
memory tier: dax/kmem: in
On Thu, Mar 28, 2024 at 5:59 PM Huang, Ying wrote:
>
> "Ho-Ren (Jack) Chuang" writes:
>
> > The current implementation treats emulated memory devices, such as
> > CXL1.1 type3 memory, as normal DRAM when they are emulated as normal memory
> > (E820_TYPE_RAM).
ry_tier instead of modifying it
*
https://lore.kernel.org/lkml/20240312061729.1997111-1-horenchu...@bytedance.com/T/#u
-v1:
*
https://lore.kernel.org/lkml/20240301082248.3456086-1-horenchu...@bytedance.com/T/#u
Ho-Ren (Jack) Chuang (2):
memory tier: dax/kmem: introduce an abstract layer for
to be managed,
a default memory type is created for storing all memory types that are
not initialized by device drivers and as a fallback.
Signed-off-by: Ho-Ren (Jack) Chuang
Signed-off-by: Hao Xiang
Reviewed-by: "Huang, Ying"
---
mm/memory-ti
997111-1-horenchu...@bytedance.com/T/#u
-v1:
*
https://lore.kernel.org/lkml/20240301082248.3456086-1-horenchu...@bytedance.com/T/#u
Ho-Ren (Jack) Chuang (2):
memory tier: dax/kmem: introduce an abstract layer for finding,
allocating, and putting memory types
memory tier: create CPUless memory tiers aft
Since different memory devices require finding, allocating, and putting
memory types, these common steps are abstracted in this patch,
enhancing the scalability and conciseness of the code.
Signed-off-by: Ho-Ren (Jack) Chuang
Reviewed-by: "Huang, Ying"
---
drivers/dax/kmem.c
On Tue, Apr 9, 2024 at 7:33 PM Huang, Ying wrote:
>
> "Ho-Ren (Jack) Chuang" writes:
>
> > On Fri, Apr 5, 2024 at 7:03 AM Jonathan Cameron
> > wrote:
> >>
> >> On Fri, 5 Apr 2024 00:07:06 +
> >> "Ho-Ren (Jack) Chuang"
On Tue, Apr 9, 2024 at 2:50 PM Andrew Morton wrote:
>
> On Tue, 9 Apr 2024 12:00:06 -0700 "Ho-Ren (Jack) Chuang"
> wrote:
>
> > Hi Jonathan,
> >
> > On Fri, Apr 5, 2024 at 6:56 AM Jonathan Cameron
> > wrote:
> > >
> > > On Fri
On Wed, Apr 10, 2024 at 9:51 AM Jonathan Cameron
wrote:
>
> On Tue, 9 Apr 2024 12:02:31 -0700
> "Ho-Ren (Jack) Chuang" wrote:
>
> > Hi Jonathan,
> >
> > On Tue, Apr 9, 2024 at 9:12 AM Jonathan Cameron
> > wrote:
> > >
> > > On Fr
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