[PATCH v4 00/12] SMP cleanup and new features

From: Atish Patra
Date: Tue Sep 11 2018 - 16:05:42 EST

This patch series has updated the assorted cleanup series by palmer.
The original cleanup patch series can be found here.

It also implemented decoupling linux logical cpu ids from hardware cpu id.
Some of the work has been inspired from ARM64.
Tested on QEMU & HighFive Unleashed board with/without SMP enabled.

Both the patch series have been combined to avoid conflicts as a lot
of common code is changed in both the series. I have mostly addressed
review comments and fixed checkpatch errors from palmer's series.


1. Dropped cpu_ops patch.
2. Moved back IRQ cause definitions to irq.h
3. Keep boot cpu hart id and assign zero as the cpu id for boot cpu.
4. Renamed cpu id and hart id correctly.


1. Added cleanup patches from palmer.
2. Moved the hotplug related functions to it's own file.
3. Updated stub functions as per coding guidelines.
4. Renamed __cpu_logical_map to a more coherent name.


1. Addressed minor typos in commit text and code.
2. Included Anup's do_IRQ patch.
3. Dropped cpu hotplug patch. As there are some concerns
about approach, I will submit it separately.

Anup Patel (1):
RISC-V: No need to pass scause as arg to do_IRQ()

Atish Patra (4):
RISC-V: Disable preemption before enabling interrupts
RISC-V: User WRITE_ONCE instead of direct access
RISC-V: Add logical CPU indexing for RISC-V
RISC-V: Use Linux logical cpu number instead of hartid

Palmer Dabbelt (7):
RISC-V: Don't set cacheinfo.{physical_line_partition,attributes}
RISC-V: Filter ISA and MMU values in cpuinfo
RISC-V: Comment on the TLB flush in smp_callin()
RISC-V: Provide a cleaner raw_smp_processor_id()
RISC-V: Rename riscv_of_processor_hart to riscv_of_processor_hartid
RISC-V: Rename im_okay_therefore_i_am to found_boot_cpu
RISC-V: Use mmgrab()

arch/riscv/include/asm/processor.h | 2 +-
arch/riscv/include/asm/smp.h | 38 ++++++++++++-----
arch/riscv/include/asm/tlbflush.h | 16 ++++++--
arch/riscv/kernel/cacheinfo.c | 7 ----
arch/riscv/kernel/cpu.c | 83 ++++++++++++++++++++++++++++++++------
arch/riscv/kernel/entry.S | 1 -
arch/riscv/kernel/head.S | 4 +-
arch/riscv/kernel/irq.c | 4 +-
arch/riscv/kernel/setup.c | 10 +++++
arch/riscv/kernel/smp.c | 43 +++++++++++++++-----
arch/riscv/kernel/smpboot.c | 46 ++++++++++++++-------
drivers/clocksource/riscv_timer.c | 12 ++++--
drivers/irqchip/irq-sifive-plic.c | 10 +++--
13 files changed, 207 insertions(+), 69 deletions(-)