Annotate that get_cyclecount() can be expensive on some platforms,
which juxtaposes nicely with the comment just above on how the harvest function must be cheap.
This commit is contained in:
parent
d7592a9bb7
commit
7b853afb00
@ -77,6 +77,10 @@ random_yarrow_deinit_harvester(void)
|
||||
* not do anything slow in here!
|
||||
* Implemented as in indirect call to allow non-inclusion of
|
||||
* the entropy device.
|
||||
*
|
||||
* XXXRW: get_cyclecount() is cheap on most modern hardware, where cycle
|
||||
* counters are built in, but on older hardware it will do a real time clock
|
||||
* read which can be quite expensive.
|
||||
*/
|
||||
void
|
||||
random_harvest(void *entropy, u_int count, u_int bits, u_int frac,
|
||||
|
Loading…
Reference in New Issue
Block a user