From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@kernel.org>
Cc: x86@kernel.org, Thorsten Leemhuis <regressions@leemhuis.info>,
Jonathan Corbet <corbet@lwn.net>,
Huang Ying <ying.huang@intel.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: [PATCH 0/2] x86: Fix performance regression in get_user_pages_fast()
Date: Sat, 9 Sep 2017 00:56:01 +0300 [thread overview]
Message-ID: <20170908215603.9189-1-kirill.shutemov@linux.intel.com> (raw)
Fix performance regression found by 0-day.
Kirill A. Shutemov (2):
mm: Add infrastructure for get_user_pages_fast() benchmarking
mm, x86: Fix performance regression in get_user_pages_fast()
mm/Kconfig | 9 +++
mm/Makefile | 1 +
mm/gup.c | 97 +++++++++++++++++-----------
mm/gup_benchmark.c | 100 +++++++++++++++++++++++++++++
tools/testing/selftests/vm/Makefile | 1 +
tools/testing/selftests/vm/gup_benchmark.c | 91 ++++++++++++++++++++++++++
6 files changed, 260 insertions(+), 39 deletions(-)
create mode 100644 mm/gup_benchmark.c
create mode 100644 tools/testing/selftests/vm/gup_benchmark.c
--
2.14.1
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next reply other threads:[~2017-09-08 21:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-08 21:56 Kirill A. Shutemov [this message]
2017-09-08 21:56 ` [PATCH 1/2] mm: Add infrastructure for get_user_pages_fast() benchmarking Kirill A. Shutemov
2017-09-08 21:56 ` [PATCH 2/2] mm, x86: Fix performance regression in get_user_pages_fast() Kirill A. Shutemov
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