ALL is to be honored in lazy
migration mode.
task_numa_work() skips the read-only VMAs of programs and shared libraries.
V2:
- Combined patch and cover letter
- Added note about applicability of MPOL_MF_MOVE_ALL
Signed-off-by: Henry Willard
Reviewed-by: Håkon Bugge
Reviewed-by: Steve Sistare st
> On Jan 17, 2018, at 10:23 AM, Christopher Lameter wrote:
>
> On Tue, 16 Jan 2018, Mel Gorman wrote:
>
>> My main source of discomfort is the fact that this is permanent as two
>> processes perfectly isolated but with a suitably shared COW mapping
>> will never migrate the data. A potential i
> On Jan 19, 2018, at 6:12 PM, Christopher Lameter wrote:
>
> On Thu, 18 Jan 2018, Henry Willard wrote:
>
>> If MPOL_MF_LAZY were allowed and specified things would not work
>> correctly. change_pte_range() is unaware of and can’t honor the
>> differenc
Workloads consisting of a large number of processes running the same program
with a very large shared data section may experience performance problems
when numa balancing attempts to migrate the shared cow pages. This manifests
itself with many processes or tasks in TASK_UNINTERRUPTIBLE state wait
node counts.
This patch skips shared copy-on-write pages in change_pte_range() for the
numa balancing case.
Signed-off-by: Henry Willard
Reviewed-by: Håkon Bugge
Reviewed-by: Steve Sistare steven.sist...@oracle.com
---
mm/mprotect.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/mm
> On Jan 16, 2018, at 1:26 PM, Mel Gorman wrote:
>
> On Tue, Jan 16, 2018 at 11:28:44AM -0800, Henry Willard wrote:
>> Workloads consisting of a large number processes running the same program
>> with a large shared data section may suffer from excessive numa balancing
>
een freed by the former.
This patch uses gov_dbs_data_mutex to synchronize access.
Signed-off-by: Henry Willard
---
drivers/cpufreq/cpufreq_governor.c | 10 +-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/cpufreq/cpufreq_governor.c
b/drivers/cpufreq/cpufreq_governo
re enough pages that the boost will produce positive results.
In this case that is estimated to be four times as many pages as
pageblock_nr_pages.
Signed-off-by: Henry Willard
---
mm/page_alloc.c | 8
1 file changed, 8 insertions(+)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
ind
On 5/4/20 1:36 PM, Andrew Morton wrote:
On Mon, 4 May 2020 13:44:09 +0100 Mel Gorman
wrote:
On Fri, May 01, 2020 at 03:57:29PM -0700, Andrew Morton wrote:
On Thu, 30 Apr 2020 17:49:08 -0700 Henry Willard
wrote:
Commit 1c30844d2dfe ("mm: reclaim small amounts of memory when an ext
James
Thanks for taking the time to review this and the pointers.
On 11/11/20 10:11 AM, James Morse wrote:
Hi Henry,
On 06/11/2020 23:25, Henry Willard wrote:
machine_shutdown() is called by kernel_kexec() to shutdown
the non-boot CPUs prior to starting the new kernel. The
implementation of
seconds,
while smp_send_stop() needs only the 5 msecs.
Signed-off-by: Henry Willard
---
arch/arm64/kernel/process.c | 17 ++---
arch/arm64/kernel/smp.c | 8 +++-
2 files changed, 21 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel
Code: f9000bf3 aa0003f3 aa1e03e0 d503201f (f9400260)
[ 448.945271] SMP: stopping secondary CPUs
Signed-off-by: Henry Willard
---
drivers/target/target_core_user.c | 10 +-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/target/target_core_user.c
b/drivers/t
.
And when submitting patch, we suggest to use as documented in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Henry-Willard/scsi-target-tcmu-Call-flush_dcache_page-with-proper-page-struct/20200620-024740
base: https://git.kernel.org/pub/scm/linux
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