Since current traceevent somehow does not have an optimization flag,
this patch just adds -O2 to optimize its code.
Signed-off-by: Honggyu Kim <hong.gyu@lge.com>
---
tools/lib/traceevent/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/lib/trac
Since asprintf generates a compiler warning when its return value is not
not properly handled, this patch checks that asprintf call is successful
or not.
Signed-off-by: Honggyu Kim <hong.gyu@lge.com>
---
tools/lib/traceevent/parse-filter.c | 29 +++--
1 file c
y be used uninitialized in this
function [-Wmaybe-uninitialized]
kbuf->next = kbuf->index + length;
^
kbuffer-parse.c:297:15: note: ‘length’ was declared here
unsigned int length;
^
Signed-off-by: Honggyu Kim <hong.gyu@lge.com>
---
Since current traceevent somehow does not have an optimization flag,
this patch just adds -O2 to optimize its code.
Signed-off-by: Honggyu Kim
---
tools/lib/traceevent/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/lib/traceevent/Makefile b/tools/lib
Since asprintf generates a compiler warning when its return value is not
not properly handled, this patch checks that asprintf call is successful
or not.
Signed-off-by: Honggyu Kim
---
tools/lib/traceevent/parse-filter.c | 29 +++--
1 file changed, 19 insertions(+), 10
y be used uninitialized in this
function [-Wmaybe-uninitialized]
kbuf->next = kbuf->index + length;
^
kbuffer-parse.c:297:15: note: ‘length’ was declared here
unsigned int length;
^
Signed-off-by: Honggyu Kim
---
tools/lib/traceevent/event-pa
256GB of
local DRAM and 96GB of CXL memory. The performance slowdown is reduced
from 20~24% for "default" to 5~7% for "DAMON 2-tier".
Having these DAMOS_DEMOTE and DAMOS_PROMOTE actions can make 2-tier
memory systems run more efficiently under high memory pressures.
Signed-off-by
changes applied.
Signed-off-by: Honggyu Kim
---
mm/vmscan.c | 18 --
1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index bba207f41b14..7ca2396ccc3b 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2107,15 +2107,16 @@ static unsigned int
-> __promote_folio_list
-> promote_folio_list
Signed-off-by: Hyeongtak Ji
Signed-off-by: Honggyu Kim
---
include/linux/damon.h | 2 +
include/linux/migrate_mode.h | 1 +
include/linux/vm_event_item.h | 1 +
include/trace/events/migrate.h | 3 +-
mm/damon/paddr.c
From: Hyeongtak Ji
This patch adds next_promotion_node that can be used to identify the
appropriate promotion target based on memory tiers. When multiple
promotion target nodes are available, the nearest node is selected based
on numa distance.
Signed-off-by: Hyeongtak Ji
---
do_demote_folio_list
-> __demote_folio_list
-> demote_folio_list
__demote_folio_list() is a minimized version of shrink_folio_list(), but
it's minified only for demotion.
Signed-off-by: Honggyu Kim
---
include/linux/damon.h| 2 +
mm/damon/paddr.c | 17 +---
mm/damon/sysfs-sche
Hi SeongJae,
Thanks very much for your comments in details.
On Tue, 16 Jan 2024 12:31:59 -0800 SeongJae Park wrote:
> Thank you so much for this great patches and the above nice test results. I
> believe the test setup and results make sense, and merging a revised version
> of
> this
The alloc_demote_folio can be used out of vmscan.c so it'd be better to
remove static keyword from it.
This function can also be used for both demotion and promotion so it'd
be better to rename it from alloc_demote_folio to alloc_migrate_folio.
Signed-off-by: Honggyu Kim
---
mm/internal.h | 1
of
shrink_folio_list(), but it's minified only for demotion.
Signed-off-by: Honggyu Kim
Signed-off-by: Hyeongtak Ji
---
include/linux/damon.h| 2 +
mm/damon/paddr.c | 222 ++-
mm/damon/sysfs-schemes.c | 1 +
3 files changed, 224 insertions(+), 1
256GB of
local DRAM and 96GB of CXL memory. The performance slowdown is reduced
from 20~24% for "default" to 5~7% for "DAMON 2-tier".
Having these DAMOS_DEMOTE and DAMOS_PROMOTE actions can make 2-tier
memory systems run more efficiently under high memory pressures.
Signed-off-by
This is a preparation patch that introduces migration modes.
The damon_pa_pageout is renamed to damon_pa_migrate and it receives an
extra argument for migration_mode.
No functional changes applied.
Signed-off-by: Honggyu Kim
---
mm/damon/paddr.c | 18 +++---
1 file changed, 15
From: Hyeongtak Ji
This patch adds target_nid under
/sys/kernel/mm/damon/admin/kdamonds//contexts//schemes/
target_nid can be used as the destination node for DAMOS actions such as
DAMOS_DEMOTE or DAMOS_PROMOTE in the future.
Signed-off-by: Hyeongtak Ji
Signed-off-by: Honggyu Kim
From: Hyeongtak Ji
This patch introduces DAMOS_PROMOTE action for paddr mode.
It includes renaming alloc_demote_folio to alloc_migrate_folio to use it
for promotion as well.
Signed-off-by: Hyeongtak Ji
Signed-off-by: Honggyu Kim
---
include/linux/damon.h | 2 ++
include/linux
Signed-off-by: Hyeongtak Ji
Signed-off-by: Honggyu Kim
---
mm/damon/paddr.c | 27 +--
1 file changed, 17 insertions(+), 10 deletions(-)
diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c
index 37a7b34a36dd..5e057a69464f 100644
--- a/mm/damon/paddr.c
+++ b/mm/damon/paddr.c
From: Hyeongtak Ji
This patch adds next_promotion_node that can be used to identify the
appropriate promotion target based on memory tiers. When multiple
promotion target nodes are available, the nearest node is selected based
on numa distance.
Signed-off-by: Hyeongtak Ji
---
; > On Mon, 26 Feb 2024 23:05:46 +0900 Honggyu Kim wrote:
> >
> > > There was an RFC IDEA "DAMOS-based Tiered-Memory Management" previously
> > > posted at [1].
> > >
> > > It says there is no implementation of the demote/promote DAMOS
Hi SeongJae,
On Sun, 17 Mar 2024 08:31:44 -0700 SeongJae Park wrote:
> Hi Honggyu,
>
> On Sun, 17 Mar 2024 17:36:29 +0900 Honggyu Kim wrote:
>
> > Hi SeongJae,
> >
> > Thanks for the confirmation. I have a few comments on young filter so
> > p
Hi SeongJae,
On Sun, 17 Mar 2024 12:13:57 -0700 SeongJae Park wrote:
> On Sun, 17 Mar 2024 08:31:44 -0700 SeongJae Park wrote:
>
> > Hi Honggyu,
> >
> > On Sun, 17 Mar 2024 17:36:29 +0900 Honggyu Kim wrote:
> >
> > > Hi SeongJae,
> > >
Hi SeongJae,
On Wed, 20 Mar 2024 09:56:19 -0700 SeongJae Park wrote:
> Hi Honggyu,
>
> On Wed, 20 Mar 2024 16:07:48 +0900 Honggyu Kim wrote:
>
> > Hi SeongJae,
> >
> > On Mon, 18 Mar 2024 12:07:21 -0700 SeongJae Park wrote:
> > > On Mon, 18 Mar
Hi SeongJae,
On Tue, 27 Feb 2024 15:51:20 -0800 SeongJae Park wrote:
> On Mon, 26 Feb 2024 23:05:46 +0900 Honggyu Kim wrote:
>
> > There was an RFC IDEA "DAMOS-based Tiered-Memory Management" previously
> > posted at [1].
> >
> > It says there is no im
; Sent: Tuesday, March 12, 2024 3:33 AM
> > > To: Honggyu Kim
> > > Cc: SeongJae Park ; kernel_team
> > > Subject: RE: Re: [RFC PATCH v2 0/7] DAMON based 2-tier memory management
> > > for CXL memory
> > >
> > > Hi Honggyu,
> > >
> &
Hi SeongJae,
On Mon, 18 Mar 2024 12:07:21 -0700 SeongJae Park wrote:
> On Mon, 18 Mar 2024 22:27:45 +0900 Honggyu Kim wrote:
>
> > Hi SeongJae,
> >
> > On Sun, 17 Mar 2024 08:31:44 -0700 SeongJae Park wrote:
> > > Hi Honggyu,
> > >
> > > On
Hi SeongJae,
On Fri, 22 Mar 2024 09:32:23 -0700 SeongJae Park wrote:
> On Fri, 22 Mar 2024 18:02:23 +0900 Honggyu Kim wrote:
>
> > Hi SeongJae,
> >
> > On Tue, 27 Feb 2024 15:51:20 -0800 SeongJae Park wrote:
> > > On Mon, 26 Feb 2024
Hi SeongJae,
On Mon, 8 Apr 2024 10:52:28 -0700 SeongJae Park wrote:
> On Mon, 8 Apr 2024 21:06:44 +0900 Honggyu Kim wrote:
>
> > On Fri, 5 Apr 2024 12:24:30 -0700 SeongJae Park wrote:
> > > On Fri, 5 Apr 2024 15:08:54 +0900 Honggyu Kim wrote:
> [...]
> >
On Mon, 8 Apr 2024 22:41:04 +0900 Honggyu Kim wrote:
[...]
> To explain this, I better share more test results. In the section of
> "Evaluation Workload", the test sequence can be summarized as follows.
>
> *. "Turn on DAMON."
> 1. Allocate cold memory(m
From: Hyeongtak Ji
This patch adds target_nid under
/sys/kernel/mm/damon/admin/kdamonds//contexts//schemes//
The 'target_nid' can be used as the destination node for DAMOS actions
such as DAMOS_MIGRATE_{HOT,COLD} in the follow up patches.
Signed-off-by: Hyeongtak Ji
Signed-off-by: Honggyu
The current patch series introduces DAMON based migration across NUMA
nodes so it'd be better to have a new migrate_reason in trace events.
Signed-off-by: Honggyu Kim
---
include/linux/migrate_mode.h | 1 +
include/trace/events/migrate.h | 3 ++-
2 files changed, 3 insertions(+), 1 deletion
folio_list() is a minimized version of
shrink_folio_list(), but it's minified only for demotion.
Signed-off-by: Honggyu Kim
Signed-off-by: Hyeongtak Ji
---
include/linux/damon.h| 2 +
mm/damon/paddr.c | 146 ++-
mm/damon/sysfs-schemes.c | 4 ++
3 files ch
This patch adds "damon_migrate_{hot,cold}" under node specific vmstat
counters at the following location.
/sys/devices/system/node/node*/vmstat
The counted values are accumulcated to the global vmstat so it also
introduces the same counter at /proc/vmstat as well.
Signed-off-by: H
Node 0 Node 1 Node 2 Total
-- -- -- -- -
701 (hot_cold) 501 0601 1101
Signed-off-by: Hyeongtak Ji
Signed-off-by: Honggyu Kim
---
include/linux/damon.h| 2 ++
mm/damon/paddr.c | 12 ++--
mm/damon/sysfs-schemes.c | 4 +++-
3 fil
n the system runs with
high memory pressure on its fast tier DRAM nodes.
Having these DAMOS_MIGRATE_HOT and DAMOS_MIGRATE_COLD actions can make
tiered memory systems run more efficiently under high memory pressures.
Signed-off-by: Honggyu Kim
Signed-off-by: Hyeongtak Ji
Signed-off-by: Rakie Kim
The alloc_demote_folio can be used out of vmscan.c so it'd be better to
remove static keyword from it.
This function can also be used for both demotion and promotion so it'd
be better to rename it from alloc_demote_folio to alloc_migrate_folio.
Signed-off-by: Honggyu Kim
---
mm/internal.h | 1
This is a preparation patch that introduces migration modes.
The damon_pa_pageout is renamed to damon_pa_migrate and it receives an
extra argument for migration_mode.
No functional changes applied.
Signed-off-by: Honggyu Kim
---
mm/damon/paddr.c | 18 +++---
1 file changed, 15
Hi SeongJae,
On Tue, 26 Mar 2024 16:03:09 -0700 SeongJae Park wrote:
> On Mon, 25 Mar 2024 15:53:03 -0700 SeongJae Park wrote:
>
> > On Mon, 25 Mar 2024 21:01:04 +0900 Honggyu Kim wrote:
> [...]
> > > On Fri, 22 Mar 2024 09:32:23 -0700 SeongJae Park wrote:
> >
Hi Gregory,
On Fri, 5 Apr 2024 12:56:14 -0400 Gregory Price
wrote:
> On Fri, Apr 05, 2024 at 03:08:49PM +0900, Honggyu Kim wrote:
> > There was an RFC IDEA "DAMOS-based Tiered-Memory Management" previously
> > posted at [1].
> >
> > 1. YCSB zi
On Fri, 5 Apr 2024 12:24:30 -0700 SeongJae Park wrote:
> On Fri, 5 Apr 2024 15:08:54 +0900 Honggyu Kim wrote:
>
> > This patch introduces DAMOS_MIGRATE_COLD action, which is similar to
> > DAMOS_PAGEOUT, but migrate folios to the given 'target_nid' in the sysfs
> >
Hi SeongJae,
On Fri, 5 Apr 2024 12:28:00 -0700 SeongJae Park wrote:
> Hello Honggyu,
>
> On Fri, 5 Apr 2024 15:08:49 +0900 Honggyu Kim wrote:
>
> > There was an RFC IDEA "DAMOS-based Tiered-Memory Management" previously
> > posted at [1].
> >
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