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| author |   Jason A. Donenfeld <Jason@zx2c4.com> | 2022-09-20 16:12:00 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2022-09-23 12:27:57 +0200 |
| commit | d775335e350fc07e1322960ee291dc9079ab938e (patch) | |
| tree | 9459588ff43af5215f615cf945fd2db7fbefe43a /tools/perf/scripts/python/call-graph-from-sql.py | |
| parent | random: use hwgenerator randomness more frequently at early boot (diff) | |
| download | linux-dev-d775335e350fc07e1322960ee291dc9079ab938e.tar.xz linux-dev-d775335e350fc07e1322960ee291dc9079ab938e.zip | |
random: throttle hwrng writes if no entropy is credited
If a hwrng source does not provide an entropy estimate, it currently
does not contribute at all to the CRNG. In order to help fix this, in
case add_hwgenerator_randomness() is called with the entropy parameter
set to zero, go to sleep until one reseed interval has passed.
While the hwrng thread currently only runs under conditions where this
is non-zero, this change is not harmful and prepares for future updates
to the hwrng core.
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-sql.py')
0 files changed, 0 insertions, 0 deletions