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3 Commits

Author SHA1 Message Date
Heiko Carstens 169ceac429 s390/vdso: use union tod_clock 
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
 2021-02-13 17:17:54 +01:00
Heiko Carstens 1ab3001b6e s390/vdso: add missing prototypes for vdso functions 
clang W=1 warns about missing prototypes:

>> arch/s390/kernel/vdso64/getcpu.c:8:5: warning: no previous prototype for function '__s390_vdso_getcpu' [-Wmissing-prototypes]
   int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
       ^

Add a local header file in order to get rid of this warnings.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
 2020-11-30 14:10:50 +01:00
Heiko Carstens 80f0630624 s390/vdso: reimplement getcpu vdso syscall 
Implement the previously removed getcpu vdso syscall by using the
TOD programmable field to pass the cpu number to user space.

Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
 2020-11-23 12:01:13 +01:00