linux-toradex.git/drivers/char/random.c, branch tegra-11.2.10

random: Reorder struct entropy_store to remove padding on 64bits

2010-07-31T11:58:00+00:00

Re-order structure entropy_store to remove 8 bytes of padding on
64 bit builds, so shrinking this structure from 72 to 64 bytes
and allowing it to fit into one cache line.

Signed-off-by: Richard Kennedy 
Signed-off-by: Matt Mackall 
Signed-off-by: Herbert Xu

random: simplify fips mode

2010-05-20T09:55:01+00:00

Rather than dynamically allocate 10 bytes, move it to static allocation.
This saves space and avoids the need for error checking.

Signed-off-by: Matt Mackall 
Signed-off-by: Herbert Xu

Fix misspellings of "truly" in comments.

2010-02-04T10:55:45+00:00

Some comments misspell "truly"; this fixes them. No code changes.

Signed-off-by: Adam Buchbinder 
Signed-off-by: Jiri Kosina

random: Remove unused inode variable

2010-02-01T19:50:27+00:00

The previous changeset left behind an unused inode variable.
This patch removes it.

Reported-by: Stephen Rothwell 
Signed-off-by: Herbert Xu

random: drop weird m_time/a_time manipulation

2010-02-01T19:50:23+00:00

No other driver does anything remotely like this that I know of except
for the tty drivers, and I can't see any reason for random/urandom to do
it. In fact, it's a (trivial, harmless) timing information leak. And
obviously, it generates power- and flash-cycle wasting I/O, especially
if combined with something like hwrngd. Also, it breaks ubifs's
expectations.

Signed-off-by: Matt Mackall 
Signed-off-by: Herbert Xu

random.c: use %pU to print UUIDs

2009-12-15T16:53:33+00:00

Signed-off-by: Joe Perches 
Acked-by: Matt Mackall 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sysctl: Drop & in front of every proc_handler.

2009-11-18T16:37:40+00:00

For consistency drop & in front of every proc_handler.  Explicity
taking the address is unnecessary and it prevents optimizations
like stubbing the proc_handlers to NULL.

Cc: Alexey Dobriyan 
Cc: Ingo Molnar 
Cc: Joe Perches 
Signed-off-by: Eric W. Biederman

sysctl drivers: Remove dead binary sysctl support

2009-11-12T10:04:58+00:00

Now that sys_sysctl is a wrapper around /proc/sys all of
the binary sysctl support elsewhere in the tree is
dead code.

Cc: Jens Axboe 
Cc: Corey Minyard 
Cc: Greg Kroah-Hartman 
Cc: Matt Mackall 
Cc: Herbert Xu 
Cc: Neil Brown 
Cc: "James E.J. Bottomley" 
Acked-by: Clemens Ladisch  for drivers/char/hpet.c
Signed-off-by: Eric W. Biederman

sysctl: remove "struct file *" argument of ->proc_handler

2009-09-24T14:21:04+00:00

It's unused.

It isn't needed -- read or write flag is already passed and sysctl
shouldn't care about the rest.

It _was_ used in two places at arch/frv for some reason.

Signed-off-by: Alexey Dobriyan 
Cc: David Howells 
Cc: "Eric W. Biederman" 
Cc: Al Viro 
Cc: Ralf Baechle 
Cc: Martin Schwidefsky 
Cc: Ingo Molnar 
Cc: "David S. Miller" 
Cc: James Morris 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

random: Add optional continuous repetition test to entropy store based rngs

2009-06-18T11:50:21+00:00

FIPS-140 requires that all random number generators implement continuous self
tests in which each extracted block of data is compared against the last block
for repetition.  The ansi_cprng implements such a test, but it would be nice if
the hw rng's did the same thing.  Obviously its not something thats always
needed, but it seems like it would be a nice feature to have on occasion. I've
written the below patch which allows individual entropy stores to be flagged as
desiring a continuous test to be run on them as is extracted.  By default this
option is off, but is enabled in the event that fips mode is selected during
bootup.

Signed-off-by: Neil Horman 
Acked-by: Matt Mackall 
Signed-off-by: Herbert Xu