Greetings, the two patches in this series add a vdso to s390 for three system calls: 1) gettimeofday 2) clock_getres for CLOCK_REALTIME and CLOCK_MONOTONIC 3) clock_gettime for CLOCK_REALTIME and CLOCK_MONOTONIC The vdso code for gettimeofday is about 4-5 times faster than the system call. Similar results for clock_gettime. The first of the two patches changes the arch_setup_additional_pages function. The second argument is unused and can be removed. For the s390 vdso I want to know if the elf executable is dynamically linked or not. Only if an interpreter is used the vdso is mapped. This adds a second argument to arch_setup_additional_pages again but with a different semantic. -- blue skies, Martin. "Reality continues to ruin my life." - Calvin. -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
