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| author |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2017-04-05 17:54:49 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2017-04-07 12:01:27 +1000 |
| commit | a978e13965a40ac07163643cc3fa0ddb0d354198 (patch) | |
| tree | 64f2eb659ce991062ff1a85949f14a11d1450ba3 /arch/powerpc/platforms | |
| parent | powerpc: Add optional smp_ops->prepare_cpu SMP callback (diff) | |
| download | linux-dev-a978e13965a40ac07163643cc3fa0ddb0d354198.tar.xz linux-dev-a978e13965a40ac07163643cc3fa0ddb0d354198.zip | |
powerpc/smp: Remove migrate_irq() custom implementation
Some powerpc platforms use this to move IRQs away from a CPU being
unplugged. This function has several bugs such as not taking the right
locks or failing to NULL check pointers.
There's a new generic function doing exactly the same thing without all
the bugs, so let's use it instead.
mpe: The obvious place for the select of GENERIC_IRQ_MIGRATION is on
HOTPLUG_CPU, but that doesn't work. On some configs PM_SLEEP_SMP will
select HOTPLUG_CPU even though its dependencies are not met, which means
the select of GENERIC_IRQ_MIGRATION doesn't happen. That leads to the
build breaking. Fix it by moving the select of GENERIC_IRQ_MIGRATION to
SMP.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/Kconfig.cputype | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 99b0ae8acb78..9b25cded03e9 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -373,6 +373,7 @@ config PPC_PERF_CTRS config SMP depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x + select GENERIC_IRQ_MIGRATION bool "Symmetric multi-processing support" ---help--- This enables support for systems with more than one CPU. If you have |