diff options
| author | Michael Ellerman <michael@ellerman.id.au> | 2013-06-28 18:15:16 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-07-01 11:50:10 +1000 |
| commit | 330a1eb7775ba876dbd46b9885556e57f705e3d4 (patch) | |
| tree | 138693772ff043ec23e335a1ef42df7a7d5707ba /arch/powerpc/include/asm/processor.h | |
| parent | 2ac138ca21ad26c988ce7c91d27327f85beb7519 (diff) | |
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 <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/processor.h')
| -rw-r--r-- | arch/powerpc/include/asm/processor.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index 3f19df3cc7a..47a35b08b96 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -287,8 +287,9 @@ struct thread_struct { unsigned long siar; unsigned long sdar; unsigned long sier; - unsigned long mmcr0; unsigned long mmcr2; + unsigned mmcr0; + unsigned used_ebb; #endif }; |