From: Eric Dumazet <eric.dumazet@gmail.com>
To: Ingo Molnar <mingo@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Peter Zijlstra <peterz@infradead.org>
Cc: "Paul E . McKenney" <paulmck@kernel.org>,
Boqun Feng <boqun.feng@gmail.com>,
Arjun Roy <arjunroy@google.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Eric Dumazet <edumazet@google.com>,
Eric Dumazet <eric.dumazet@gmail.com>
Subject: [PATCH 0/3] rseq: minor optimizations
Date: Tue, 13 Apr 2021 00:36:54 -0700 [thread overview]
Message-ID: <20210413073657.2308450-1-eric.dumazet@gmail.com> (raw)
From: Eric Dumazet <edumazet@google.com>
rseq is a heavy user of copy to/from user data in fast paths.
This series tries to reduce the cost.
Eric Dumazet (3):
rseq: optimize rseq_update_cpu_id()
rseq: remove redundant access_ok()
rseq: optimise for 64bit arches
kernel/rseq.c | 26 ++++++++++++++++++++------
1 file changed, 20 insertions(+), 6 deletions(-)
--
2.31.1.295.g9ea45b61b8-goog
next reply other threads:[~2021-04-13 7:37 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-13 7:36 Eric Dumazet [this message]
2021-04-13 7:36 ` [PATCH 1/3] rseq: optimize rseq_update_cpu_id() Eric Dumazet
2021-04-13 14:29 ` Mathieu Desnoyers
2021-04-13 15:24 ` Eric Dumazet
2021-04-13 7:36 ` [PATCH 2/3] rseq: remove redundant access_ok() Eric Dumazet
2021-04-13 14:34 ` Mathieu Desnoyers
2021-04-13 15:19 ` Eric Dumazet
2021-04-13 7:36 ` [PATCH 3/3] rseq: optimise for 64bit arches Eric Dumazet
2021-04-13 9:10 ` Peter Zijlstra
2021-04-13 10:36 ` David Laight
2021-04-13 14:21 ` Mathieu Desnoyers
2021-04-13 15:06 ` David Laight
2021-04-13 15:08 ` Mathieu Desnoyers
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