Cleanup: Move instrumentation/ headers to include/instrumentation/

[lttng-modules.git] / include / instrumentation / events / lttng-module / printk.h

diff --git a/include/instrumentation/events/lttng-module/printk.h b/include/instrumentation/events/lttng-module/printk.h
new file mode 100644 (file)
index 0000000..75b4ee9
--- /dev/null
+++ b/include/instrumentation/events/lttng-module/printk.h
@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM printk
+
+#if !defined(LTTNG_TRACE_PRINTK_H) || defined(TRACE_HEADER_MULTI_READ)
+#define LTTNG_TRACE_PRINTK_H
+
+#include <lttng/tracepoint-event.h>
+#include <linux/version.h>
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0))
+
+LTTNG_TRACEPOINT_EVENT_MAP(console,
+
+       printk_console,
+
+       TP_PROTO(const char *text, size_t len),
+
+       TP_ARGS(text, len),
+
+       TP_FIELDS(
+               ctf_sequence_text(char, msg, text, size_t, len)
+       )
+)
+
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0))
+
+LTTNG_TRACEPOINT_EVENT_MAP(console,
+
+       printk_console,
+
+       TP_PROTO(const char *log_buf, unsigned start, unsigned end,
+                unsigned log_buf_len),
+
+       TP_ARGS(log_buf, start, end, log_buf_len),
+
+       TP_FIELDS(
+               ctf_sequence_text(char, msg, log_buf + start,
+                       size_t, end - start)
+       )
+)
+
+#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0)) */
+
+LTTNG_TRACEPOINT_EVENT_MAP(console,
+
+       printk_console,
+
+       TP_PROTO(const char *log_buf, unsigned start, unsigned end,
+                unsigned log_buf_len),
+
+       TP_ARGS(log_buf, start, end, log_buf_len),
+
+       TP_FIELDS(
+               /*
+                * printk buffer is gathered from two segments on older kernels.
+                */
+               ctf_sequence_text(char, msg1,
+                       log_buf + (start & (log_buf_len - 1)),
+                       size_t, (start & (log_buf_len - 1)) > (end & (log_buf_len - 1))
+                               ? log_buf_len - (start & (log_buf_len - 1))
+                               : end - start)
+               ctf_sequence_text(char, msg2,
+                       log_buf,
+                       size_t, (start & (log_buf_len - 1)) > (end & (log_buf_len - 1))
+                               ? end & (log_buf_len - 1)
+                               : 0)
+       )
+)
+
+#endif
+
+#endif /* LTTNG_TRACE_PRINTK_H */
+
+/* This part must be outside protection */
+#include <lttng/define_trace.h>