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| author | Sven Schnelle <svens@linux.ibm.com> | 2020-06-12 12:59:19 +0200 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2020-09-26 15:51:21 +0200 |
| commit | b2539aa0d7ff1e42c74a9dd8c73ec1c2771c9e5d (patch) | |
| tree | 74471364f8829eba85a20ca628d944b5b50ae864 /arch/s390/include/asm/cio.h | |
| parent | s390/stp: use u32 instead of unsigned int (diff) | |
| download | linux-b2539aa0d7ff1e42c74a9dd8c73ec1c2771c9e5d.tar.xz linux-b2539aa0d7ff1e42c74a9dd8c73ec1c2771c9e5d.zip | |
s390/stp: add support for leap seconds
In the current implementation, leap seconds are only synchronized
during the bootup process when the STP clock is synced. If the Leap
second offset (LSO) changes the machine must be rebooted, which is
not desired. This patch adds the required code to handle Leap second
changes during runtime. If the Leap second changes, a Configuration
change machine check is triggered. The STP code than schedules a Leap
second insertion/deletion with do_adjtimex().
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/cio.h')
| -rw-r--r-- | arch/s390/include/asm/cio.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/cio.h b/arch/s390/include/asm/cio.h index b5bfb3123cb1..953a7316b30a 100644 --- a/arch/s390/include/asm/cio.h +++ b/arch/s390/include/asm/cio.h @@ -372,6 +372,7 @@ struct gen_pool *cio_gp_dma_create(struct device *dma_dev, int nr_pages); /* Function from drivers/s390/cio/chsc.c */ int chsc_sstpc(void *page, unsigned int op, u16 ctrl, u64 *clock_delta); int chsc_sstpi(void *page, void *result, size_t size); +int chsc_stzi(void *page, void *result, size_t size); int chsc_sgib(u32 origin); #endif |