Commit Graph

3 Commits

Author SHA1 Message Date
Andrew Boie eec6b2673d tests: benchmarks: sched: remove icount notes
icount is on by default for all QEMU targets where it works
properly.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2020-06-24 20:28:36 -04:00
Andy Ross ec554f44d9 kernel: Split reschdule & pend into irq/spin lock versions
Just like with _Swap(), we need two variants of these utilities which
can atomically release a lock and context switch.  The naming shifts
(for byte count reasons) to _reschedule/_pend_curr, and both have an
_irqlock variant which takes the traditional locking.

Just refactoring.  No logic changes.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
2019-02-08 14:49:39 -05:00
Andy Ross aa3c9b7f1e tests/benchmarks: Add scheduler microbenchmark
Useful tool for performance work that removes interaction with other
APIs and thread state.  The best part is that it doesn't rely on timer
interrupt delivery and so works with -icount even on existing qemu
versions and produces deterministic output.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
2019-02-01 15:57:21 -05:00