From: Mark Brown <broonie@kernel.org>
To: Douglas Anderson <dianders@chromium.org>
Cc: Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
akashast@codeaurora.org, linux-arm-msm@vger.kernel.org,
mkshah@codeaurora.org, swboyd@chromium.org,
georgi.djakov@linaro.org, ctheegal@codeaurora.org,
mka@chromium.org, linux-kernel@vger.kernel.org,
linux-spi@vger.kernel.org
Subject: Re: [PATCH 3/3] spi: spi-geni-qcom: Get rid of most overhead in prepare_message()
Date: Wed, 8 Jul 2020 13:49:03 +0100 [thread overview]
Message-ID: <20200708124903.GN4655@sirena.org.uk> (raw)
In-Reply-To: <20200701174506.3.I2b3d7aeb1ea622335482cce60c58d2f8381e61dd@changeid>
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On Wed, Jul 01, 2020 at 05:45:09PM -0700, Douglas Anderson wrote:
> There's a bunch of overhead in spi-geni-qcom's prepare_message. Get
> rid of it. Before this change spi_geni_prepare_message() took around
> 14.5 us. After this change, spi_geni_prepare_message() takes about
> 1.75 us (as measured by ftrace).
Acked-by: Mark Brown <broonie@kernel.org>
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next prev parent reply other threads:[~2020-07-08 12:49 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-02 0:45 [PATCH 0/3] spi: spi-geni-qcom: Avoid a bunch of per-transfer overhead Douglas Anderson
2020-07-02 0:45 ` [PATCH 1/3] spi: spi-geni-qcom: Avoid clock setting if not needed Douglas Anderson
2020-07-07 10:16 ` Akash Asthana
2020-07-07 12:08 ` Mark Brown
2020-07-07 12:53 ` Doug Anderson
2020-07-08 10:01 ` Mark Brown
2020-07-08 15:22 ` Doug Anderson
2020-07-08 17:02 ` Mark Brown
2020-07-08 12:48 ` Mark Brown
2020-07-02 0:45 ` [PATCH 2/3] spi: spi-geni-qcom: Set an autosuspend delay of 250 ms Douglas Anderson
2020-07-07 10:18 ` Akash Asthana
2020-07-02 0:45 ` [PATCH 3/3] spi: spi-geni-qcom: Get rid of most overhead in prepare_message() Douglas Anderson
2020-07-07 13:37 ` Akash Asthana
2020-07-08 12:49 ` Mark Brown [this message]
2020-07-07 14:17 ` [PATCH 0/3] spi: spi-geni-qcom: Avoid a bunch of per-transfer overhead Mark Brown
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