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authorRobert Richter <robert.richter@amd.com>2010-09-21 15:49:31 +0200
committerRobert Richter <robert.richter@amd.com>2010-10-15 12:50:42 +0200
commit25da6950475becb35d7a3bb3b5fbdc715a76887e (patch)
treece77e751ee711b08ddc5fd3cc6e159a093676b5b /fs
parent53b39e9480ef8a286cef9899c455a979acd0eed9 (diff)
oprofile, x86: Add support for IBS branch target address reporting
This patch adds support for IBS branch target address reporting. A new MSR (MSRC001_103B IBS Branch Target Address) has been added that provides the logical address in canonical form for the branch target. The size of the IBS sample that is transferred to the userland has been increased. For backward compatibility, the userland daemon must explicit enable the feature by writing to the oprofilefs file ibs_op/branch_target After enabling branch target address reporting, the userland daemon must handle the extended size of the IBS sample. Signed-off-by: Robert Richter <robert.richter@amd.com>
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