diff options
| author |   Peter Zijlstra (Intel) <peterz@infradead.org> | 2020-03-27 11:44:56 +0100 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2020-05-12 17:10:48 +0200 |
| commit | 90b5363acd4739769c3f38c1aff16171bd133e8c (patch) | |
| tree | a735cefbe7aa985a4bb70caf58b2a961a140f45b /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | sched/core: Simplify sched_init() (diff) | |
| download | linux-rng-90b5363acd4739769c3f38c1aff16171bd133e8c.tar.xz linux-rng-90b5363acd4739769c3f38c1aff16171bd133e8c.zip | |
sched: Clean up scheduler_ipi()
The scheduler IPI has grown weird and wonderful over the years, time
for spring cleaning.
Move all the non-trivial stuff out of it and into a regular smp function
call IPI. This then reduces the schedule_ipi() to most of it's former NOP
glory and ensures to keep the interrupt vector lean and mean.
Aside of that avoiding the full irq_enter() in the x86 IPI implementation
is incorrect as scheduler_ipi() can be instrumented. To work around that
scheduler_ipi() had an irq_enter/exit() hack when heavy work was
pending. This is gone now.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Link: https://lkml.kernel.org/r/20200505134058.361859938@linutronix.de
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions