Re: [RFC V2 0/8] Generic IRQ entry/exit support for powerpc

Thomas Gleixner
2025-09-10T20:34:16Z

On Tue, Sep 09 2025 at 02:32, Mukesh Kumar Chaurasiya wrote:
> Adding support for the generic irq entry/exit handling for PowerPC. The
> goal is to bring PowerPC in line with other architectures that already
> use the common irq entry infrastructure, reducing duplicated code and
> making it easier to share future changes in entry/exit paths.
>
> This is slightly tested on ppc64le.
>
> The performance benchmarks from perf bench basic syscall are below:
>
> | Metric | W/O Generic Framework | With Generic Framework | Improvement |
> | ---------- | --------------------- | ---------------------- | ----------- |
> | Total time | 0.885 [sec] | 0.880 [sec] | ~0.56% |
> | usecs/op | 0.088518 | 0.088005 | ~0.58% |
> | ops/sec | 1,12,97,086 | 1,13,62,977 | ~0.58% |
>
> Thats close to 0.6% improvement with this.

Cool!

> 18 files changed, 698 insertions(+), 810 deletions(-)

Thanks for moving ppc over to this. Makes everyones life easier!

tglx