ARM Coresight: Enhance ETM tracing control

[Adrien Vergé]

Usage of ETM tracing facility is currently very limited: user can
only start/stop tracing. This set of patches enables management of
address combinations and PIDs that trigger tracing.

ETM management was done via sysfs entries (trace_info,
trace_running...), this code adds trace_addrrange and trace_pid to
let the user read/write custom values.

This series of patches apply to v3.13-rc2.

Signed-off-by: Adrien Vergé <adrienverge at gmail.com>
Cc: Russell King <linux at arm.linux.org.uk>
Cc: Ben Dooks <ben.dooks at codethink.co.uk>
Cc: Will Deacon <will.deacon at arm.com>
Cc: Dietmar Eggemann <dietmar.eggemann at arm.com>
Cc: Andrew Morton <akpm at linux-foundation.org>
Cc: "zhangwei(Jovi)" <jovi.zhangwei at huawei.com>
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Cc: Randy Dunlap <rdunlap at infradead.org>
---
Adrien Vergé (3):
  ARM Coresight: Rename 'comparator' to 'address comparator' in ETM
  ARM Coresight: Add address control support for ETM tracing
  ARM Coresight: Add PID control support for ETM tracing

 arch/arm/Kconfig.debug                    |   1 +
 arch/arm/include/asm/hardware/coresight.h |   7 +-
 arch/arm/kernel/etm.c                     | 139 ++++++++++++++++++++++++++----
 3 files changed, 129 insertions(+), 18 deletions(-)

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1.8.3.1