On 2015/9/23 2:54, Thomas Gleixner wrote:
On Sat, 19 Sep 2015, Yang Yingliang wrote:
Add irq_migrate_all_off_this_cpu() into kernel/irq/migration.c.
This doesn't make any sense at all.
You just reuse the existing file to stick your new code into it
without reusing a single bit in that file. Aside of that it's
unconditionally compiled, which means all existing users of
CONFIG_GENERIC_PENDING_IRQ are burdened with pointless code.
The right thing to do is:
Add that code to a new file: kernel/irq/cpuhotplug.c and make that
depend on CONFIG_GENERIC_IRQ_MIGRATION.
How about add #ifdef CONFIG_CPU_HOTPLUG around new code
in kernel/irq/migration.c ?
Thanks,
Yang
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