Patchset fixes the inconsistent results we are getting when we run multiple 24x7 events.
"hv_24x7" pmu interface events needs system dependent parameter like socket/chip/core. For example, hv_24x7 chip level events needs specific chip-id to which the data is requested should be added as part of pmu events. So to enable JSON file support to "hv_24x7" interface, patchset expose total number of sockets and chips per-socket details in sysfs files (sockets, chips) under "/sys/devices/hv_24x7/interface/". To get sockets and number of chips per sockets, patchset adds a rtas call with token "PROCESSOR_MODULE_INFO" to get these details. Patchset also handles partition migration case to re-init these system depended parameters by adding proper calls in post_mobility_fixup() (mobility.c). v6: http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=164769 Changelog: v6 -> v7 - Split patchset into two patch series, one with kernel changes and another with perf tool side changes. This pachset contain all kernel side changes. Kajol Jain (5): powerpc/perf/hv-24x7: Fix inconsistent output values incase multiple hv-24x7 events run powerpc/hv-24x7: Add rtas call in hv-24x7 driver to get processor details powerpc/hv-24x7: Add sysfs files inside hv-24x7 device to show processor details Documentation/ABI: Add ABI documentation for chips and sockets powerpc/hv-24x7: Update post_mobility_fixup() to handle migration .../sysfs-bus-event_source-devices-hv_24x7 | 14 +++ arch/powerpc/perf/hv-24x7.c | 104 ++++++++++++++++-- arch/powerpc/platforms/pseries/mobility.c | 12 ++ arch/powerpc/platforms/pseries/pseries.h | 3 + 4 files changed, 123 insertions(+), 10 deletions(-) -- 2.18.1