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uprobes depends on functionality provided by perf events. After uprobes was enabled in the standard kernel the mpc8315 board showed link errors due to missing perf event functions. This problem isn't isolated to the board or powerpc arch, but all other boards have PERF_EVENTS enabled. To fix this, we make UPROBE_EVENT select PERF_EVENTS, and any new boards will be protected from the same failure. We also update the configuration fragments since CONFIG_UPROBES depends on CONFIG_PERF_EVENTS being set, so PERF_EVENTS needs to be added whenever uprobes are enabled. [YOCTO #3111] (From OE-Core rev: b681b74624d1c8c4c98b2a121828e010fc5c3a25) Signed-off-by: Tom Zanussi <tom.zanussi@intel.com> Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>