linux-kernel - [PATCH 0/3] mmc: core: Avoid hogging the CPU while polling for busy

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Message-Id: <20210702134229.357717-1-ulf.hansson@linaro.org>
Date:   Fri,  2 Jul 2021 15:42:26 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     linux-mmc@...r.kernel.org, Ulf Hansson <ulf.hansson@...aro.org>
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        Christian Lohle <CLoehle@...erstone.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/3] mmc: core: Avoid hogging the CPU while polling for busy

Step by step, code that have been dealing sending CMD13 to poll the card for
busy, have been moved to use the common mmc_poll_for_busy() loop. This helps to
avoid hogging the CPU, for example, as it inserts a small delay in between each
polling attempt. Additionally, it avoids open coding.

This series takes the next and final step, by moving the mmc block device layer
from its own busy polling loop, into using the common code.

Please test and review!

Kind regards
Uffe

Ulf Hansson (3):
  mmc: core: Avoid hogging the CPU while polling for busy in the I/O err
    path
  mmc: core: Avoid hogging the CPU while polling for busy for mmc ioctls
  mmc: core: Avoid hogging the CPU while polling for busy after I/O
    writes

 drivers/mmc/core/block.c   | 74 +++++++++++++++++---------------------
 drivers/mmc/core/mmc_ops.c |  5 ++-
 drivers/mmc/core/mmc_ops.h |  1 +
 3 files changed, 37 insertions(+), 43 deletions(-)

-- 
2.25.1