Christian Borntraeger 35810f5ccf s390: optimize syscall function ... Since kernel 2.6.0 all Linux version accept the system call number in register 1 for svc 0. There is no need to have special handling that uses EX for system calls < 256. This will simplify and speed up that code. A microbenchmark doing "syscall(__NR_getpid);" in a loops gets faster by ~12%. * sysdeps/unix/sysv/linux/s390/s390-32/syscall.S: Simplify code by always using SVC 0 instead of EX. * sysdeps/unix/sysv/linux/s390/s390-64/syscall.S: Likewise.		2017-06-19 10:59:40 +02:00
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linux	s390: optimize syscall function	2017-06-19 10:59:40 +02:00