diff options
Diffstat (limited to 'arch/Kconfig')
| -rw-r--r-- | arch/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index 185f8b007643..ded747c7b74c 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -402,6 +402,16 @@ config HAVE_UNDERSCORE_SYMBOL_PREFIX Some architectures generate an _ in front of C symbols; things like module loading and assembly files need to know about this. +config HAVE_IRQ_EXIT_ON_IRQ_STACK + bool + help + Architecture doesn't only execute the irq handler on the irq stack + but also irq_exit(). This way we can process softirqs on this irq + stack instead of switching to a new one when we call __do_softirq() + in the end of an hardirq. + This spares a stack switch and improves cache usage on softirq + processing. + # # ABI hall of shame # |