[PATCH v5 0/4] perf: AARCH64 arch support
Will Deacon
will.deacon at arm.com
Fri Jan 24 11:35:49 EST 2014
Hi Jean,
On Wed, Jan 22, 2014 at 02:11:15PM +0000, Jean Pihet wrote:
> Add AARCH64 specific support. This includes the following:
> - AARCH64 perf registers definition and hooks,
> - compat mode registers use, i.e. profiling a 32-bit binary on
> a 64-bit system,
> - unwinding using the dwarf information from the .debug_frame
> section of the ELF binary,
> - unwinding using the frame pointer information; in 64-bit and
> compat modes.
>
> Note: support for unwinding using the dwarf information in compat
> mode requires some changes to the libunwind code. Those changes
> have been submitted on the libunwind ML and are in discussion.
>
> Tested on ARMv7, ARMv8 and x86_64 platforms. The compat mode has been
> tested on ARMv8 using statically built 32-bit binaries.
This is look alright to me now, but there are still two blockers:
(1) Getting the libunwind code merged
(2) Splitting this into an arch/arm64 series and a tools/perf series, so
that acme can merge the latter independently (and avoid the mess we had
last time).
Anyway, for the series:
Acked-by: Will Deacon <will.deacon at arm.com>
Will
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