The Coresight ETM drivers already support context-ID tracing, but it won't
work when PID namespace is enabled. This is because when using PID
namespace a process id (ie. VPID) seen from the current namespace differs
from the id (ie. PID) seen by kernel.
This patch-set does add a translation between VPID and PID.
Chunyan Zhang (5):
coresight-etm3x: Change the name of the ctxid_val to ctxid_pid
coresight-etm4x: Change the name of the ctxid_val to ctxid_pid
Coresight: Add an interface for supporting ETM3/4 Context ID tracing
coresight-etm3x: Support context-ID tracing when PID namespace is
enabled
coresight-etm4x: Support context-ID tracing when PID namespace is
enabled
.../ABI/testing/sysfs-bus-coresight-devices-etm3x | 2 +-
.../ABI/testing/sysfs-bus-coresight-devices-etm4x | 2 +-
drivers/hwtracing/coresight/coresight-etm.h | 7 ++--
drivers/hwtracing/coresight/coresight-etm3x.c | 28 +++++++++-------
drivers/hwtracing/coresight/coresight-etm4x.c | 37 ++++++++++++++--------
drivers/hwtracing/coresight/coresight-etm4x.h | 7 ++--
include/linux/coresight.h | 20 ++++++++++++
7 files changed, 72 insertions(+), 31 deletions(-)
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1.9.1