On Tue, Oct 12, 2021 at 4:46 AM Heiko Stübner [off-list ref] wrote:

Hi Anup,

Am Montag, 11. Oktober 2021, 10:18:13 CEST schrieb Anup Patel:

quoted

We force select CPU_PM and provide asm/cpuidle.h so that we can
use CPU IDLE drivers for Linux RISC-V kernel.

Signed-off-by: Anup Patel <redacted>
---
 arch/riscv/Kconfig                |  7 +++++++
 arch/riscv/configs/defconfig      |  1 +
 arch/riscv/configs/rv32_defconfig |  1 +
 arch/riscv/include/asm/cpuidle.h  | 24 ++++++++++++++++++++++++
 arch/riscv/kernel/process.c       |  3 ++-
 5 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 arch/riscv/include/asm/cpuidle.h

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 8de2afb460f7..d02f1f5a2431 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig

@@ -46,6 +46,7 @@ config RISCV
      select CLONE_BACKWARDS
      select CLINT_TIMER if !MMU
      select COMMON_CLK
+     select CPU_PM if CPU_IDLE
      select EDAC_SUPPORT
      select GENERIC_ARCH_TOPOLOGY if SMP
      select GENERIC_ATOMIC64 if !64BIT

@@ -564,5 +565,11 @@ source "kernel/power/Kconfig"

 endmenu

+menu "CPU Power Management"
+
+source "drivers/cpuidle/Kconfig"
+
+endmenu
+
 source "arch/riscv/kvm/Kconfig"
 source "drivers/firmware/Kconfig"

another issue, the "arch/riscv/kvm/Kconfig" line above comes from a
commit that is not in the riscv-tree at all but in the kvm-tree [0],
making this patch fail to apply onto riscv/for-next alone.

If you have multiple independent patch series in flight, like shown in
the github branch you references, it might be easier to base each on
top of the relevant branch cleanly and after one gets applied rebase
the other ones.

I know I have been doing that but this time accidently picked the wrong
branch to rebase upon.

Thanks for trying.

Regards,
Anup

That way you're not dependent on the others going in first and also
people can test patch series individually without too much hassle.

Thanks
Heiko


[0] https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux.git/commit/?h=next&id=99cdc6c18c2d815e940e81b9b477d469bdd41788

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