From: Hillf Danton <hdanton@sina.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: atomlin@atomlin.com, frederic@kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH v13 3/6] mm/vmstat: manage per-CPU stats from CPU context when NOHZ full
Date: Tue, 10 Jan 2023 10:43:56 +0800 [thread overview]
Message-ID: <20230110024356.336-1-hdanton@sina.com> (raw)
In-Reply-To: <Y7wg4bC65mNcpElo@tpad>
On 9 Jan 2023 11:12:49 -0300 Marcelo Tosatti <mtosatti@redhat.com>
>
> Yes, but if you do not return to userspace, then the per-CPU vm
> statistics can be dirty indefinitely.
Could you specify the reasons for failing to return to userspace,
given it is undesired intereference for the shepherd to queue work
on the isolated CPUs.
next prev parent reply other threads:[~2023-01-10 2:44 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-05 12:52 [PATCH v13 0/6] Ensure quiet_vmstat() is called when returning to userpace and when idle tick is stopped Marcelo Tosatti
2023-01-05 12:52 ` [PATCH v13 1/6] mm/vmstat: Add CPU-specific variable to track a vmstat discrepancy Marcelo Tosatti
2023-01-10 11:58 ` Christoph Lameter
2023-01-10 12:12 ` Frederic Weisbecker
2023-01-05 12:52 ` [PATCH v13 2/6] mm/vmstat: Use vmstat_dirty to track CPU-specific vmstat discrepancies Marcelo Tosatti
2023-01-10 12:06 ` Christoph Lameter
2023-01-10 12:18 ` Frederic Weisbecker
2023-01-10 13:39 ` Christoph Lameter
2023-01-10 20:09 ` Marcelo Tosatti
2023-01-11 8:42 ` Christoph Lameter
2023-01-11 17:07 ` Marcelo Tosatti
2023-01-16 9:51 ` Christoph Lameter
2023-01-16 16:11 ` Marcelo Tosatti
2023-01-17 12:52 ` Christoph Lameter
2023-01-05 12:52 ` [PATCH v13 3/6] mm/vmstat: manage per-CPU stats from CPU context when NOHZ full Marcelo Tosatti
2023-01-05 12:52 ` [PATCH v13 4/6] tick/nohz_full: Ensure quiet_vmstat() is called on exit to user-mode when the idle tick is stopped Marcelo Tosatti
2023-01-05 12:52 ` [PATCH v13 5/6] tick/sched: Ensure quiet_vmstat() is called when the idle tick was stopped too Marcelo Tosatti
2023-01-05 12:52 ` [PATCH v13 6/6] mm/vmstat: avoid queueing work item if cpu stats are clean Marcelo Tosatti
[not found] ` <20230106001244.4463-1-hdanton@sina.com>
2023-01-06 12:51 ` [PATCH v13 3/6] mm/vmstat: manage per-CPU stats from CPU context when NOHZ full Marcelo Tosatti
2023-01-06 15:01 ` Hillf Danton
2023-01-06 18:16 ` Marcelo Tosatti
2023-01-07 0:15 ` Hillf Danton
2023-01-09 14:12 ` Marcelo Tosatti
2023-01-10 2:43 ` Hillf Danton [this message]
2023-01-10 11:50 ` Marcelo Tosatti
2023-01-10 15:19 ` Hillf Danton
2023-01-10 16:12 ` Frederic Weisbecker
2023-01-10 23:58 ` Hillf Danton
2023-01-11 0:09 ` Frederic Weisbecker
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