When running cyclictest with -t and -a options one thread is created per online CPU. However if there are any offline CPUs the affinity of the threads created is incorrect. This is because cyclictest assumes the online CPUs are numbered 0..N where N is the number of online CPUs. In reality there can be holes in the online CPU numbering. This patch series fixes this by checking the online status of each CPU via sysfs before setting the CPU affinity. It also adds some sanity checking by reading back the CPU affinity after setting it to see if it was set correctly. Allen Martin (3): Android: add pthread_getaffinity_np() cyclictest: read back CPU affinity to verify cyclictest: Handle non sequential online CPU numbering src/cyclictest/cyclictest.c | 61 +++++++++++++++++++++++++++++++++++++-------- src/include/bionic.h | 6 +++++ 2 files changed, 57 insertions(+), 10 deletions(-) -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
