From: Thomas Gleixner <tglx@linutronix.de>
To: Mukesh Kumar Chaurasiya <mchauras@linux.ibm.com>,
maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com,
christophe.leroy@csgroup.eu, oleg@redhat.com, kees@kernel.org,
luto@amacapital.net, wad@chromium.org, mchauras@linux.ibm.com,
deller@gmx.de, ldv@strace.io, macro@orcam.me.uk,
charlie@rivosinc.com, akpm@linux-foundation.org,
bigeasy@linutronix.de, ankur.a.arora@oracle.com,
sshegde@linux.ibm.com, naveen@kernel.org,
thomas.weissschuh@linutronix.de, Jason@zx2c4.com,
peterz@infradead.org, namcao@linutronix.de,
kan.liang@linux.intel.com, mingo@kernel.org,
oliver.upton@linux.dev, mark.barnett@arm.com,
atrajeev@linux.vnet.ibm.com, rppt@kernel.org,
coltonlewis@google.com, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org
Subject: Re: [RFC V2 0/8] Generic IRQ entry/exit support for powerpc
Date: Wed, 10 Sep 2025 22:34:13 +0200 [thread overview]
Message-ID: <87ikhqrqre.ffs@tglx> (raw)
In-Reply-To: <20250908210235.137300-2-mchauras@linux.ibm.com>
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
next prev parent reply other threads:[~2025-09-10 20:34 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-08 21:02 [RFC V2 0/8] Generic IRQ entry/exit support for powerpc Mukesh Kumar Chaurasiya
2025-09-08 21:02 ` [RFC V2 1/8] powerpc: rename arch_irq_disabled_regs Mukesh Kumar Chaurasiya
2025-09-13 12:50 ` Shrikanth Hegde
2025-09-08 21:02 ` [RFC V2 2/8] powerpc: Prepare to build with generic entry/exit framework Mukesh Kumar Chaurasiya
2025-09-13 12:49 ` Shrikanth Hegde
2025-09-16 4:16 ` Mukesh Kumar Chaurasiya
2025-09-08 21:02 ` [RFC V2 3/8] powerpc: introduce arch_enter_from_user_mode Mukesh Kumar Chaurasiya
2025-09-14 9:02 ` Shrikanth Hegde
2025-09-16 4:19 ` Mukesh Kumar Chaurasiya
2025-09-08 21:02 ` [RFC V2 4/8] powerpc: Introduce syscall exit arch functions Mukesh Kumar Chaurasiya
2025-09-08 21:02 ` [RFC V2 5/8] powerpc: add exit_flags field in pt_regs Mukesh Kumar Chaurasiya
2025-09-08 21:02 ` [RFC V2 6/8] powerpc: Prepare for IRQ entry exit Mukesh Kumar Chaurasiya
2025-09-08 21:02 ` [RFC V2 7/8] powerpc: Enable IRQ generic entry/exit path Mukesh Kumar Chaurasiya
2025-09-16 4:16 ` Shrikanth Hegde
2025-09-18 6:55 ` Mukesh Kumar Chaurasiya
2025-09-08 21:02 ` [RFC V2 8/8] powerpc: Enable Generic Entry/Exit for syscalls Mukesh Kumar Chaurasiya
2025-09-09 6:54 ` Shrikanth Hegde
2025-09-09 8:46 ` Mukesh Kumar Chaurasiya
2025-09-18 6:57 ` Mukesh Kumar Chaurasiya
2025-09-10 20:34 ` Thomas Gleixner [this message]
2025-09-24 9:04 ` [RFC V2 0/8] Generic IRQ entry/exit support for powerpc Samir Alamshaha Mulani
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