On 2018-09-05 오전 1:24, Andrey Ryabinin wrote:
On 09/04/2018 01:10 PM, Andrey Ryabinin wrote:
>
>
> On 09/04/2018 09:59 AM, Kyeongdon Kim wrote:
>
>>>> +#undef strncmp
>>>> +int strncmp(const char *cs, const char *ct, size_t len)
>>>> +{
&
Hello Andrey,
Thanks for your review.
On 2018-09-03 오후 6:40, Andrey Ryabinin wrote:
On 08/23/2018 11:56 AM, Kyeongdon Kim wrote:
> diff --git a/mm/kasan/kasan.c b/mm/kasan/kasan.c
> index c3bd520..61ad7f1 100644
> --- a/mm/kasan/kasan.c
> +++ b/mm/kasan/kasan.c
> @@ -304,6
Hello Dmitry,
On 2018-09-03 오후 6:13, Dmitry Vyukov wrote:
On Mon, Sep 3, 2018 at 11:02 AM, Kyeongdon Kim
wrote:
> Dear all,
>
> Could anyone review this and provide me appropriate approach ?
> I think str[n]cmp are frequently used functions so I believe very
useful w/
> a
Dear all,
Could anyone review this and provide me appropriate approach ?
I think str[n]cmp are frequently used functions so I believe very useful
w/ arm64 KASAN.
Best Regards,
Kyeongdon Kim
On 2018-08-23 오후 5:56, Kyeongdon Kim wrote:
This patch declares strcmp/strncmp as weak symbols.
(2
patch now.
Signed-off-by: Kyeongdon Kim
---
arch/arm64/include/asm/string.h | 5 +
arch/arm64/kernel/arm64ksyms.c | 2 ++
arch/arm64/kernel/image.h | 2 ++
arch/arm64/lib/strcmp.S | 3 +++
arch/arm64/lib/strncmp.S| 3 +++
mm/kasan/kasan.c| 23
bus_add_driver+0x2dc/0x328
driver_register+0x118/0x160
__platform_driver_register+0x7c/0x88
alarmtimer_init+0x154/0x1e4
do_one_initcall+0x184/0x1a4
kernel_init_freeable+0x2ec/0x2f0
kernel_init+0x18/0x10c
ret_from_fork+0x10/0x50
Signed-off-by: Kyeongdon Kim
---
arch/arm64/include/asm/string.h | 4
c fc fc
==
Signed-off-by: Kyeongdon Kim
---
arch/arm64/include/asm/string.h | 2 ++
arch/arm64/kernel/arm64ksyms.c | 2 ++
arch/arm64/lib/Makefile | 8 +---
3 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/arc
sumption than KSM default enable.
v1 -> v2
- add comment for oldchecksum value
- move the oldchecksum value out of union
- remove check code regarding checksum 0 in stable_tree_search()
link to v1 : https://lkml.org/lkml/2017/10/30/251
Signed-off-by: Kyeon
Sorry, re-send this email because of the Delivery failed message (to
linux-kernel)
On 2017-10-30 오후 10:22, Timofey Titovets wrote:
2017-10-30 15:03 GMT+03:00 Kyeongdon Kim :
> The current ksm is using memcmp to insert and search 'rb_tree'.
> It does cause very expensive comput
d advantage
for the power consumption than KSM default enable.
Signed-off-by: Kyeongdon Kim
---
mm/ksm.c | 49 +
1 file changed, 45 insertions(+), 4 deletions(-)
diff --git a/mm/ksm.c b/mm/ksm.c
index be8f457..66ab4f4 100644
--- a/mm/ksm.c
+++ b/
On 2017-09-04 오후 5:30, Konstantin Khlebnikov wrote:
On 04.09.2017 04:35, Kyeongdon Kim wrote:
> Thanks for your reply,
> But I couldn't find "NR_FRAGMENT_PAGES" in linux-next.git .. is that
vmstat counter? or others?
>
I mean rather than adding bunch vmstat counters
can reduce memory size 52byte(slack size/alloc count) per each struct.
Signed-off-by: Kyeongdon Kim
---
security/selinux/ss/hashtab.c | 17 +++--
security/selinux/ss/hashtab.h | 4
security/selinux/ss/services.c | 4
3 files changed, 23 insertions(+), 2 deletions
nnot use those
memory debug tools.
That's why those counters need..
and for much cheaper I can remove pgfrag_alloc_calls and pgfrag_free_calls.
Thanks,
Kyeongdon Kim
On 2017-09-01 오후 6:21, Michal Hocko wrote:
On Fri 01-09-17 12:12:36, Konstantin Khlebnikov wrote:
> IMHO that's
ree) are enough to guess
what will happen
and would remove pgfrag_alloc_calls and pgfrag_free_calls.
Thanks,
Kyeongdon Kim
On 2017-09-01 오후 6:12, Konstantin Khlebnikov wrote:
IMHO that's too much counters.
Per-node NR_FRAGMENT_PAGES should be enough for guessing what's going on.
Perf pro
calculate
for the amount of page.
The gap between pgfrag_alloc_calls and pgfrag_free_calls is for
sub-indicator.
They can see trends of memory usage during the test.
Without it, it's difficult to check page frag usage so I believe we
should add it.
Signed-off-by: Kyeongdon Kim
---
include/
LR is at swap_slot_free_notify+0x18/0x6c
> [27833.995946] pc : [] lr : [] psr: 400f0113
> [27833.995946] sp : dd193d78 ip : c2deb1e4 fp : da015180
> [27833.995959] r10: r9 : 000200da r8 : c120fe08
> [27833.995968] r7 : r6 : r5 : c249a6c0 r4 : =
> c249a6c
s startup latency about 60-120ms in each case.
>>
>
> Hello Kyeongdon,
>
> just to make sure, the patch works fine for you and we can move
> forward and Cc -stable. correct?
>
> -ss
>
Hello Sergey,
I was on vacation so I checked your email a moment ago, sorry about
om
zsmalloc()
log message (test #3) :
<4>[ 186.763605][1] KDKIM: zcomp_lz4_create: 24: ret = ffc00203
<4>[ 186.776652][1] KDKIM: zcomp_lz4_create: 24: ret = ffc0020f
<4>[ 186.811423][1] KDKIM: zcomp_lz4_create: 24: ret = ffffffc002108000
<4>[ 186.816744][1]
On 2015-11-24 오전 8:28, Minchan Kim wrote:
> Hello Andrew,
>
> On Mon, Nov 23, 2015 at 02:52:26PM -0800, Andrew Morton wrote:
>> On Mon, 23 Nov 2015 15:21:15 +0900 Kyeongdon Kim
> wrote:
>>
>> > When we're using LZ4 multi compression streams for zram s
Hello Andrew,
On 2015-11-24 오전 7:52, Andrew Morton wrote:
> On Mon, 23 Nov 2015 15:21:15 +0900 Kyeongdon Kim
> wrote:
>
>> When we're using LZ4 multi compression streams for zram swap,
>> we found out page allocation failure message in system running test.
>> Tha
4kB 0*2048kB 0*4096kB = 13796kB
Signed-off-by: Kyeongdon Kim
---
drivers/block/zram/zcomp_lz4.c | 12 ++--
drivers/block/zram/zcomp_lzo.c | 12 ++--
2 files changed, 20 insertions(+), 4 deletions(-)
diff --git a/drivers/block/zram/zcomp_lz4.c b/drivers/block/zram/zcomp_lz4.c
index f2
096kB = 13796kB
Signed-off-by: Kyeongdon Kim
---
drivers/block/zram/zcomp_lz4.c | 15 +--
drivers/block/zram/zcomp_lzo.c | 15 +--
2 files changed, 26 insertions(+), 4 deletions(-)
diff --git a/drivers/block/zram/zcomp_lz4.c b/drivers/block/zram/zcomp_lz4.c
index f2afb7e..04
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