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Diffstat (limited to 'arch/um/Kconfig')
| -rw-r--r-- | arch/um/Kconfig | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig index 448454a3d8b5..5dc702ad9e7a 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -227,6 +227,21 @@ config UML_TIME_TRAVEL_SUPPORT It is safe to say Y, but you probably don't need this. +config UML_MAX_USERSPACE_ITERATIONS + int + prompt "Maximum number of unscheduled userspace iterations" + default 10000 + depends on UML_TIME_TRAVEL_SUPPORT + help + In UML inf-cpu and ext time-travel mode userspace can run without being + interrupted. This will eventually overwhelm the kernel and create OOM + situations (mainly RCU not running). This setting specifies the number + of kernel/userspace switches (minor/major page fault, signal or syscall) + for the same userspace thread before the sched_clock is advanced by a + jiffie to trigger scheduling. + + Setting it to zero disables the feature. + config KASAN_SHADOW_OFFSET hex depends on KASAN |