Linux-RISC-V Archive on lore.kernel.org
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* [PATCH v2 0/4] IRQ affinity support in PLIC driver
@ 2018-11-27 10:03 anup
  2018-11-27 10:03 ` Anup Patel
                   ` (4 more replies)
  0 siblings, 5 replies; 19+ messages in thread
From: anup @ 2018-11-27 10:03 UTC (permalink / raw)
  To: linux-riscv

This patchset primarily adds IRQ affinity support in PLIC driver and
other improvements.

The patchset gives mechanism for explicitly routing external interrupts to
particular CPUs using smp_affinity attribute of each Linux IRQs. Also, we
can now use IRQ balancer from kernel-space or user-space.

The patchset is tested on QEMU virt machine. It is based on Linux-4.20-rc4
and can be found at riscv_plic_irq_affinity_v2 branch of:
https://github.com/avpatel/linux.git

Changes since v1:
 - Removed few whitspace changes from PATCH1
 - Keep use of DEFINE_PER_CPU() as it is

Anup Patel (4):
  irqchip: sifive-plic: Pre-compute context hart base and enable base
  irqchip: sifive-plic: More flexible plic_irq_toggle()
  irqchip: sifive-plic: Differentiate between PLIC handler and context
  irqchip: sifive-plic: Implement irq_set_affinity() for SMP host

 drivers/irqchip/irq-sifive-plic.c | 144 ++++++++++++++++++------------
 1 file changed, 86 insertions(+), 58 deletions(-)

-- 
2.17.1

^ permalink raw reply	[flat|nested] 19+ messages in thread

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Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-11-27 10:03 [PATCH v2 0/4] IRQ affinity support in PLIC driver anup
2018-11-27 10:03 ` Anup Patel
2018-11-27 10:03 ` [PATCH v2 1/4] irqchip: sifive-plic: Pre-compute context hart base and enable base anup
2018-11-27 10:03   ` Anup Patel
2018-11-30  0:35   ` Atish Patra
2018-11-30  3:34     ` Anup Patel
2018-11-27 10:03 ` [PATCH v2 2/4] irqchip: sifive-plic: More flexible plic_irq_toggle() anup
2018-11-27 10:03   ` Anup Patel
2018-11-30  1:39   ` Atish Patra
2018-11-30  3:51     ` Anup Patel
2018-11-27 10:03 ` [PATCH v2 3/4] irqchip: sifive-plic: Differentiate between PLIC handler and context anup
2018-11-27 10:03   ` Anup Patel
2018-11-30  1:57   ` Atish Patra
2018-11-30  3:55     ` Anup Patel
2018-11-27 10:03 ` [PATCH v2 4/4] irqchip: sifive-plic: Implement irq_set_affinity() for SMP host anup
2018-11-27 10:03   ` Anup Patel
2018-11-30  5:59   ` Atish Patra
2018-11-30  7:51     ` Anup Patel
2018-11-30  7:54     ` Atish Patra

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