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-rw-r--r--kernel/tools/perf/ui/util.c84
1 files changed, 84 insertions, 0 deletions
diff --git a/kernel/tools/perf/ui/util.c b/kernel/tools/perf/ui/util.c
new file mode 100644
index 000000000..e3e0a963d
--- /dev/null
+++ b/kernel/tools/perf/ui/util.c
@@ -0,0 +1,84 @@
+#include "util.h"
+#include "../debug.h"
+
+
+/*
+ * Default error logging functions
+ */
+static int perf_stdio__error(const char *format, va_list args)
+{
+ fprintf(stderr, "Error:\n");
+ vfprintf(stderr, format, args);
+ return 0;
+}
+
+static int perf_stdio__warning(const char *format, va_list args)
+{
+ fprintf(stderr, "Warning:\n");
+ vfprintf(stderr, format, args);
+ return 0;
+}
+
+static struct perf_error_ops default_eops =
+{
+ .error = perf_stdio__error,
+ .warning = perf_stdio__warning,
+};
+
+static struct perf_error_ops *perf_eops = &default_eops;
+
+
+int ui__error(const char *format, ...)
+{
+ int ret;
+ va_list args;
+
+ va_start(args, format);
+ ret = perf_eops->error(format, args);
+ va_end(args);
+
+ return ret;
+}
+
+int ui__warning(const char *format, ...)
+{
+ int ret;
+ va_list args;
+
+ va_start(args, format);
+ ret = perf_eops->warning(format, args);
+ va_end(args);
+
+ return ret;
+}
+
+/**
+ * perf_error__register - Register error logging functions
+ * @eops: The pointer to error logging function struct
+ *
+ * Register UI-specific error logging functions. Before calling this,
+ * other logging functions should be unregistered, if any.
+ */
+int perf_error__register(struct perf_error_ops *eops)
+{
+ if (perf_eops != &default_eops)
+ return -1;
+
+ perf_eops = eops;
+ return 0;
+}
+
+/**
+ * perf_error__unregister - Unregister error logging functions
+ * @eops: The pointer to error logging function struct
+ *
+ * Unregister already registered error logging functions.
+ */
+int perf_error__unregister(struct perf_error_ops *eops)
+{
+ if (perf_eops != eops)
+ return -1;
+
+ perf_eops = &default_eops;
+ return 0;
+}