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Message-ID: <20251015195712.3813004-1-samuel.holland@sifive.com> Date: Wed, 15 Oct 2025 12:55:11 -0700 From: Samuel Holland <samuel.holland@...ive.com> To: Anup Patel <anup@...infault.org>, Thomas Gleixner <tglx@...utronix.de> Cc: Palmer Dabbelt <palmer@...belt.com>, linux-kernel@...r.kernel.org, Alexandre Ghiti <alex@...ti.fr>, linux-riscv@...ts.infradead.org, Paul Walmsley <pjw@...nel.org>, Samuel Holland <samuel.holland@...ive.com>, Albert Ou <aou@...s.berkeley.edu> Subject: [PATCH 0/4] irqchip/riscv-imsic: IRQ handling optimizations This series includes a small cleanup to imsic_irq_set_affinity() and a series of optimizations to the IMSIC IRQ handling hot path. Benchmarks on a SiFive P470-based board (95% confidence interval): perf bench sched messaging: 5.20% to 7.08% improvement perf bench sched pipe : 8.47% to 13.85% improvement Samuel Holland (4): irqchip/riscv-imsic: Remove redundant irq_data lookups irqchip/riscv-imsic: Embed the vector array in lpriv irqchip/riscv-imsic: Inline imsic_vector_from_local_id() irqchip/riscv-imsic: Remove irq_desc lookup from hot path drivers/irqchip/irq-riscv-imsic-early.c | 11 +++----- drivers/irqchip/irq-riscv-imsic-platform.c | 11 ++++---- drivers/irqchip/irq-riscv-imsic-state.c | 30 +++++----------------- drivers/irqchip/irq-riscv-imsic-state.h | 8 +++--- 4 files changed, 19 insertions(+), 41 deletions(-) -- 2.47.2 base-commit: 9b332cece987ee1790b2ed4c989e28162fa47860 branch: up/imsic-opt
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