one more detail I forgot: it actually would not be compliant for niceness as the input... On Monday, September 16th, 2024 at 15:23, Michael Pratt <mcpratt@xxxxx> wrote: > On Monday, September 16th, 2024 at 07:13, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > > > Worse, you're proposing a nice ABI that is entirely different from the > > normal [-20,19] range. > > ... > ... > ... > > Otherwise, we have a confusing conflation between the meaning of the two values, > where a value of 19 makes sense for niceness, but is obviously invalid for priority > for SCHED_NORMAL, and a negative value makes sense for niceness, but is obviously invalid > for priority in any policy. > POSIX doesn't allow a negative value for the ABI at all: If successful, the sched_get_priority_max() and sched_get_priority_min() functions return the appropriate maximum or minimum values, respectively. If unsuccessful, they return a value of -1 and set errno to indicate the error. -- MCP
