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Diffstat (limited to 'drivers/char/Kconfig')
| -rw-r--r-- | drivers/char/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 08a6f50ae791..a2a0e67227d2 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -1116,6 +1116,18 @@ config DEVPORT depends on ISA || PCI default y +config UMMUNOTIFY + tristate "Userspace MMU notifications" + select MMU_NOTIFIER + help + The ummunotify (userspace MMU notification) driver creates a + character device that can be used by userspace libraries to + get notifications when an application's memory mapping + changed. This is used, for example, by RDMA libraries to + improve the reliability of memory registration caching, since + the kernel's MMU notifications can be used to know precisely + when to shoot down a cached registration. + source "drivers/s390/char/Kconfig" endmenu |