linux-kernel - [PATCH 0/3] rseq: minor optimizations

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Message-Id: <20210413073657.2308450-1-eric.dumazet@gmail.com>
Date:   Tue, 13 Apr 2021 00:36:54 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Ingo Molnar <mingo@...nel.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     "Paul E . McKenney" <paulmck@...nel.org>,
        Boqun Feng <boqun.feng@...il.com>,
        Arjun Roy <arjunroy@...gle.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH 0/3] rseq: minor optimizations

From: Eric Dumazet <edumazet@...gle.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(-)

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2.31.1.295.g9ea45b61b8-goog