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libgo patch committed: Check for preemption in fast syscall return

From: Ian Lance Taylor <iant at golang dot org>
To: gcc-patches <gcc-patches at gcc dot gnu dot org>, gofrontend-dev at googlegroups dot com
Date: Tue, 20 Feb 2018 07:30:36 -0800
Subject: libgo patch committed: Check for preemption in fast syscall return
Authentication-results: sourceware.org; auth=none

This libgo patch checks for preemption in the fast return path from a
system call.  This helps with tight loops that make system calls, as
in BenchmarkSyscallExcessWork.  Bootstrapped and ran Go testsuite on
x86_64-pc-linux-gnu.  Committed to mainline.

Ian

Attachment: patch.txt
Description: Text document

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