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[v2,5/5] doc/qat: document debug options

Message ID 1528974186-13370-6-git-send-email-tomaszx.jozwiak@intel.com (mailing list archive)
State Accepted, archived
Delegated to: Pablo de Lara Guarch
Headers show
Series crypto/qat: move to dynamic logging | expand


Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK

Commit Message

Tomasz Jozwiak June 14, 2018, 11:03 a.m. UTC
From: Fiona Trahe <fiona.trahe@intel.com>

Signed-off-by: Fiona Trahe <fiona.trahe@intel.com>
 doc/guides/cryptodevs/qat.rst | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
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diff --git a/doc/guides/cryptodevs/qat.rst b/doc/guides/cryptodevs/qat.rst
index 22a2c71..b899985 100644
--- a/doc/guides/cryptodevs/qat.rst
+++ b/doc/guides/cryptodevs/qat.rst
@@ -371,3 +371,29 @@  Each qat crypto device has a unique name, in format
 <pci bdf>_<service>, e.g. "0000:41:01.0_qat_sym".
 This name can be passed to rte_cryptodev_get_dev_id() to get the device_id.
 This is also the format of the slave parameter passed to the crypto scheduler.
+There are 2 sets of trace available via the dynamic logging feature:
+* pmd.qat_dp exposes trace on the data-path.
+* pmd.qat_general exposes all other trace.
+pmd.qat exposes both sets of traces.
+They can be enabled using the log-level option (where 8=maximum log level) on
+the process cmdline, e.g. using any of the following::
+    --log-level="pmd.qat_general,8"
+    --log-level="pmd.qat_dp,8"
+    --log-level="pmd.qat,8"
+.. Note::
+    The global RTE_LOG_DP_LEVEL overrides data-path trace so must be set to
+    RTE_LOG_DEBUG to see all the trace. This variable is in config/rte_config.h
+    for meson build and config/common_base for gnu make.
+    Also the dynamic global log level overrides both sets of trace, so e.g. no
+    QAT trace would display in this case::
+	--log-level="7" --log-level="pmd.qat_general,8"