linux-kernel - [PATCH v2 0/3] hw_random: timeriomem_rng: Migrate to new API and improve performance

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Message-Id: <20170405232100.2023-1-raltherr@google.com>
Date:   Wed,  5 Apr 2017 16:20:57 -0700
From:   Rick Altherr <raltherr@...gle.com>
To:     alex@...riz.org.uk
Cc:     openbmc@...ts.ozlabs.org, Herbert Xu <herbert@...dor.apana.org.au>,
        Matt Mackall <mpm@...enic.com>, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/3] hw_random: timeriomem_rng: Migrate to new API and improve performance

AST2400 can generate 32-bits of random data every 1us.  Original driver
was limited to one 32-bit read every jiffie due to deprecated API and use
of timers.  Migrating to new hwrng API and switching to hrtimers
improves read performance of /dev/hwrng to 13Mb/s.

Changes in v2:
- Split API migration into separate patch
- Split type and variable renames into separate patch
- Split performance improvements into separate patch

Rick Altherr (3):
  hw_random: Migrate timeriomem_rng to new API
  hw_random: timeriomem_rng: Shorten verbose type and variable names
  hw_random: timeriomem_rng: Improve performance for sub-jiffie update
    periods

 drivers/char/hw_random/timeriomem-rng.c | 157 ++++++++++++++++----------------
 1 file changed, 80 insertions(+), 77 deletions(-)

-- 
2.12.2.715.g7642488e1d-goog