[PATCH v4 1/3] Revert "perf tools: Default to cpu// for events v5"

From: Kan Liang This reverts commit 50e200f07948 ("perf tools: Default to cpu// for events v5") The fixup cannot handle the case that new style format(which without //) mixed with other different formats. For example, group events with new style format: {mem-stores,mem-loads} some hardware

[PATCH v4 1/3] Revert perf tools: Default to cpu// for events v5

From: Kan Liang kan.li...@intel.com This reverts commit 50e200f07948 (perf tools: Default to cpu// for events v5) The fixup cannot handle the case that new style format(which without //) mixed with other different formats. For example, group events with new style format: {mem-stores,mem-loads}