From: cov@codeaurora.org (Christopher Covington)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/2] arm64: Refactor vDSO time functions
Date: Wed, 22 Jun 2016 09:24:58 -0400 [thread overview]
Message-ID: <576A91AA.1040608@codeaurora.org> (raw)
In-Reply-To: <1462797421-33103-2-git-send-email-kevin.brodsky@arm.com>
Hi Kevin,
On 05/09/2016 08:37 AM, Kevin Brodsky wrote:
> Time functions are directly implemented in assembly in arm64, and it
> is desirable to keep it this way for performance reasons (everything
> fits in registers, so that the stack is not used at all). However, the
Why do you say that? My simple tests indicate passing -O1 to GCC (4.8)
is sufficient to make it only spill to the stack when necessary.
Cheers,
Cov
--
Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2016-06-22 13:24 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-09 12:36 [PATCH 0/2] arm64: Add support for CLOCK_MONOTONIC_RAW in clock_gettime() vDSO Kevin Brodsky
2016-05-09 12:37 ` [PATCH 1/2] arm64: Refactor vDSO time functions Kevin Brodsky
2016-06-22 13:24 ` Christopher Covington [this message]
2016-07-01 13:46 ` Dave Martin
2016-07-04 17:12 ` Will Deacon
2016-07-08 14:11 ` Will Deacon
2016-07-11 17:31 ` Kevin Brodsky
2016-07-11 17:42 ` Will Deacon
2016-07-12 9:10 ` Kevin Brodsky
2016-05-09 12:37 ` [PATCH 2/2] arm64: Add support for CLOCK_MONOTONIC_RAW in clock_gettime() vDSO Kevin Brodsky
2016-07-01 13:48 ` Dave Martin
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