From: Michael Ellerman Date: Fri, 28 Jun 2013 08:15:16 +0000 (+1000) Subject: powerpc/perf: Core EBB support for 64-bit book3s X-Git-Tag: v3.11-rc1~94^2~12 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=330a1eb7775ba876dbd46b9885556e57f705e3d4;p=pandora-kernel.git powerpc/perf: Core EBB support for 64-bit book3s Add support for EBB (Event Based Branches) on 64-bit book3s. See the included documentation for more details. EBBs are a feature which allows the hardware to branch directly to a specified user space address when a PMU event overflows. This can be used by programs for self-monitoring with no kernel involvement in the inner loop. Most of the logic is in the generic book3s code, primarily to avoid a proliferation of PMU callbacks. Signed-off-by: Michael Ellerman Signed-off-by: Benjamin Herrenschmidt --- Reading git-diff-tree failed