Power7 and Power8 processors save the memory hierarchy level (eg: L2, L3) from which a load or store instruction was satisfied. Export this hierarchy information to the user via the perf_mem_data_src object.
Thanks to input from Stephane Eranian, Michael Ellerman, Michael Neuling. Sukadev Bhattiprolu (8): powerpc/perf: Rename Power8 macros to start with PME powerpc/perf: Export Power8 generic events in sysfs powerpc/perf: Add PM_MRK_GRP_CMPL event to sysfs. powerpc/perf: Define big-endian version of perf_mem_data_src powerpc/perf: Export Power8 memory hierarchy info to user space. powerpc: Rename branch_opcode() to instr_opcode() power: implement is_instr_load_store(). powerpc/perf: Export Power7 memory hierarchy info to user space. arch/powerpc/include/asm/code-patching.h | 1 + arch/powerpc/include/asm/perf_event_server.h | 2 + arch/powerpc/lib/code-patching.c | 96 ++++++++++++++++++++++- arch/powerpc/perf/core-book3s.c | 11 +++ arch/powerpc/perf/power7-pmu.c | 94 +++++++++++++++++++++++ arch/powerpc/perf/power8-pmu.c | 105 +++++++++++++++++++++++--- include/uapi/linux/perf_event.h | 58 ++++++++++++++ 7 files changed, 352 insertions(+), 15 deletions(-) -- 1.7.9.5 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
