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authorDavid S. Miller <davem@davemloft.net>2012-10-17 00:05:25 +0400
committerDavid S. Miller <davem@davemloft.net>2012-10-17 00:05:25 +0400
commite793d8c6740f8fe704fa216e95685f4d92c4c4b9 (patch)
treef35eaea2baa8b83f4ffed9c12f55dbd2e32abb25 /Documentation
parent916ca14aaf12a7191118adb51bb95e3c7866380d (diff)
downloadlinux-e793d8c6740f8fe704fa216e95685f4d92c4c4b9.tar.xz
sparc64: Fix bit twiddling in sparc_pmu_enable_event().
There was a serious disconnect in the logic happening in sparc_pmu_disable_event() vs. sparc_pmu_enable_event(). Event disable is implemented by programming a NOP event into the PCR. However, event enable was not reversing this operation. Instead, it was setting the User/Priv/Hypervisor trace enable bits. That's not sparc_pmu_enable_event()'s job, that's what sparc_pmu_enable() and sparc_pmu_disable() do . The intent of sparc_pmu_enable_event() is clear, since it first clear out the event type encoding field. So fix this by OR'ing in the event encoding rather than the trace enable bits. Signed-off-by: David S. Miller <davem@davemloft.net>
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