Commit Graph

5 Commits

Author SHA1 Message Date
Peter Mitsis
d8a4c8a90c kernel: Add CONFIG_IPI_OPTIMIZE
The CONFIG_IPI_OPTIMIZE configuration option allows for the flagging
and subsequent signaling of IPIs to be optimized.

It does this by making each bit in the kernel's pending_ipi field
a flag that indicates whether the corresponding CPU might need an IPI
to trigger the scheduling of a new thread on that CPU.

When a new thread is made ready, we compare that thread against each
of the threads currently executing on the other CPUs. If there is a
chance that that thread should preempt the thread on the other CPU
then we flag that an IPI is needed for that CPU. That is, a clear bit
indicates that the CPU absolutely will not need to reschedule, while a
set bit indicates that the target CPU must make that determination for
itself.

Signed-off-by: Peter Mitsis <peter.mitsis@intel.com>
2024-06-04 22:35:54 -04:00
Adrian Bonislawski
e44d2e65ee kernel: timeslicing: add time slice reset in slice per thread api
This will reset time slice in k_thread_time_slice_set()
when slice per thread api is used.

Currently it will reset it only in standard slice_set

Signed-off-by: Adrian Bonislawski <adrian.bonislawski@intel.com>
2024-05-01 22:55:50 +01:00
Anas Nashif
5c170c7046 kernel: thread: rename is_preempt
Trivila rename to thread_is_preempt.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2024-04-01 18:47:36 -04:00
Anas Nashif
0b473ce925 kernel: rename sliceable -> thread_is_sliceable
Trivial rename of sliceable function.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2024-04-01 18:47:36 -04:00
Anas Nashif
37df485463 kernel: split timeslicing/ipi code out of sched.c
Move both timeslicing and IPI code to own files.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2024-04-01 18:47:36 -04:00