@@ -359,6 +359,19 @@ Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Print the content of the Peripheral ID3 Register
(0xFEC). The value is taken directly from the HW.
+What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcconfig
+Date: February 2016
+KernelVersion: 4.07
+Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
+Description: (R) Print the content of the trace configuration register
+ (0x010) as currently set by SW.
+
+What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trctraceid
+Date: February 2016
+KernelVersion: 4.07
+Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
+Description: (R) Print the content of the trace ID register (0x040).
+
What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr0
Date: April 2015
KernelVersion: 4.01
@@ -1972,6 +1972,8 @@ coresight_simple_func(trcoslsr, TRCOSLSR);
coresight_simple_func(trcpdcr, TRCPDCR);
coresight_simple_func(trcpdsr, TRCPDSR);
coresight_simple_func(trclsr, TRCLSR);
+coresight_simple_func(trcconfig, TRCCONFIGR);
+coresight_simple_func(trctraceid, TRCTRACEIDR);
coresight_simple_func(trcauthstatus, TRCAUTHSTATUS);
coresight_simple_func(trcdevid, TRCDEVID);
coresight_simple_func(trcdevtype, TRCDEVTYPE);
@@ -1985,6 +1987,8 @@ static struct attribute *coresight_etmv4_mgmt_attrs[] = {
&dev_attr_trcpdcr.attr,
&dev_attr_trcpdsr.attr,
&dev_attr_trclsr.attr,
+ &dev_attr_trcconfig.attr,
+ &dev_attr_trctraceid.attr,
&dev_attr_trcauthstatus.attr,
&dev_attr_trcdevid.attr,
&dev_attr_trcdevtype.attr,
Adding new sysFS management interface to query the configuration and the traceid registers. Both are required to convey information to the perf cmd line tools when using ETMv4 tracers as PMU. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> --- Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x | 13 +++++++++++++ drivers/hwtracing/coresight/coresight-etm4x-sysfs.c | 4 ++++ 2 files changed, 17 insertions(+) -- 2.1.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel