From: Daniel Jordan <daniel.m.jordan@oracle.com>
To: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: linux-mm@kvack.org, hughd@google.com,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
Zi Yan <ziy@nvidia.com>, John Hubbard <jhubbard@nvidia.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm/vmstat: Add events for PMD based THP migration without split
Date: Mon, 1 Jun 2020 12:57:36 -0400 [thread overview]
Message-ID: <20200601165736.qw5kwwknxltk7bv6@ca-dmjordan1.us.oracle.com> (raw)
In-Reply-To: <1590118444-21601-1-git-send-email-anshuman.khandual@arm.com>
Hi Anshuman,
On Fri, May 22, 2020 at 09:04:04AM +0530, Anshuman Khandual wrote:
> This adds the following two new VM events which will help in validating PMD
> based THP migration without split. Statistics reported through these events
> will help in performance debugging.
>
> 1. THP_PMD_MIGRATION_SUCCESS
> 2. THP_PMD_MIGRATION_FAILURE
The names suggest a binary event similar to the existing
pgmigrate_success/fail, but FAILURE only tracks one kind of migration error,
and then only when the thp is successfully split, so shouldn't it be called
SPLIT instead?
next prev parent reply other threads:[~2020-06-01 16:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-22 3:34 [PATCH] mm/vmstat: Add events for PMD based THP migration without split Anshuman Khandual
2020-06-01 16:57 ` Daniel Jordan [this message]
2020-06-02 3:20 ` John Hubbard
2020-06-02 4:20 ` Anshuman Khandual
2020-06-02 4:48 ` John Hubbard
2020-06-02 5:30 ` Anshuman Khandual
2020-06-02 14:52 ` Daniel Jordan
2020-06-03 4:36 ` Anshuman Khandual
2020-06-03 16:08 ` Daniel Jordan
2020-06-02 15:01 ` Matthew Wilcox
2020-06-03 1:26 ` Anshuman Khandual
2020-06-03 2:57 ` Matthew Wilcox
2020-06-03 4:58 ` Anshuman Khandual
2020-06-03 11:09 ` Matthew Wilcox
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