Power cap fixes required for the 5.0 kernel
The OCC device driver changed in the 5.0 kernel which requires
2 user space changes when setting the OCC user power cap:
1) The file name to write to changed to powerX_cap_user, where
X is some number.
2) The value changed to microWatts, from Watts.
This commit uses a regular expression to find the filename. An
alternative method would have been to find the X value by finding
which powerX_label file contained the word 'system'.
Tested: Ran the ipmitool dcmi commands to set and activate the
power cap.
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I4f086b2d80944c3bd0ebc627e4df92935d27a5a3
diff --git a/powercap.hpp b/powercap.hpp
index b28be8c..17c468f 100644
--- a/powercap.hpp
+++ b/powercap.hpp
@@ -4,6 +4,7 @@
#include "occ_status.hpp"
+#include <filesystem>
#include <sdbusplus/bus.hpp>
#include <sdbusplus/bus/match.hpp>
@@ -96,6 +97,18 @@
*/
void writeOcc(uint32_t pcapValue);
+ /**
+ * @brief Returns the filename to use for the user power cap
+ *
+ * The file is of the form "powerX_cap_user", where X is any
+ * number.
+ *
+ * @param[in] path - The directory to look for the file in
+ *
+ * @return std::string - The filename, or empty string if not found.
+ */
+ std::string getPcapFilename(const std::filesystem::path& path);
+
/** @brief Reference to sdbus **/
sdbusplus::bus::bus& bus;