Add new kernel probes instrumentation

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

diff --git a/instrumentation/events/lttng-module/random.h b/instrumentation/events/lttng-module/random.h
new file mode 100644 (file)
index 0000000..6ecdd90
--- /dev/null
+++ b/instrumentation/events/lttng-module/random.h
@@ -0,0 +1,134 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM random
+
+#if !defined(_TRACE_RANDOM_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_RANDOM_H
+
+#include <linux/writeback.h>
+#include <linux/tracepoint.h>
+
+DECLARE_EVENT_CLASS(random__mix_pool_bytes,
+       TP_PROTO(const char *pool_name, int bytes, unsigned long IP),
+
+       TP_ARGS(pool_name, bytes, IP),
+
+       TP_STRUCT__entry(
+               __string(   pool_name,  pool_name               )
+               __field(          int,  bytes                   )
+               __field(unsigned long,  IP                      )
+       ),
+
+       TP_fast_assign(
+               tp_strcpy(pool_name, pool_name)
+               tp_assign(bytes, bytes)
+               tp_assign(IP, IP)
+       ),
+
+       TP_printk("%s pool: bytes %d caller %pF",
+                 __get_str(pool_name), __entry->bytes, (void *)__entry->IP)
+)
+
+DEFINE_EVENT(random__mix_pool_bytes, mix_pool_bytes,
+       TP_PROTO(const char *pool_name, int bytes, unsigned long IP),
+
+       TP_ARGS(pool_name, bytes, IP)
+)
+
+DEFINE_EVENT(random__mix_pool_bytes, mix_pool_bytes_nolock,
+       TP_PROTO(const char *pool_name, int bytes, unsigned long IP),
+
+       TP_ARGS(pool_name, bytes, IP)
+)
+
+TRACE_EVENT(credit_entropy_bits,
+       TP_PROTO(const char *pool_name, int bits, int entropy_count,
+                int entropy_total, unsigned long IP),
+
+       TP_ARGS(pool_name, bits, entropy_count, entropy_total, IP),
+
+       TP_STRUCT__entry(
+               __string(   pool_name,  pool_name               )
+               __field(          int,  bits                    )
+               __field(          int,  entropy_count           )
+               __field(          int,  entropy_total           )
+               __field(unsigned long,  IP                      )
+       ),
+
+       TP_fast_assign(
+               tp_strcpy(pool_name, pool_name)
+               tp_assign(bits, bits)
+               tp_assign(entropy_count, entropy_count)
+               tp_assign(entropy_total, entropy_total)
+               tp_assign(IP, IP)
+       ),
+
+       TP_printk("%s pool: bits %d entropy_count %d entropy_total %d "
+                 "caller %pF", __get_str(pool_name), __entry->bits,
+                 __entry->entropy_count, __entry->entropy_total,
+                 (void *)__entry->IP)
+)
+
+TRACE_EVENT(get_random_bytes,
+       TP_PROTO(int nbytes, unsigned long IP),
+
+       TP_ARGS(nbytes, IP),
+
+       TP_STRUCT__entry(
+               __field(          int,  nbytes                  )
+               __field(unsigned long,  IP                      )
+       ),
+
+       TP_fast_assign(
+               tp_assign(nbytes, nbytes)
+               tp_assign(IP, IP)
+       ),
+
+       TP_printk("nbytes %d caller %pF", __entry->nbytes, (void *)__entry->IP)
+)
+
+DECLARE_EVENT_CLASS(random__extract_entropy,
+       TP_PROTO(const char *pool_name, int nbytes, int entropy_count,
+                unsigned long IP),
+
+       TP_ARGS(pool_name, nbytes, entropy_count, IP),
+
+       TP_STRUCT__entry(
+               __string(   pool_name,  pool_name               )
+               __field(          int,  nbytes                  )
+               __field(          int,  entropy_count           )
+               __field(unsigned long,  IP                      )
+       ),
+
+       TP_fast_assign(
+               tp_strcpy(pool_name, pool_name)
+               tp_assign(nbytes, nbytes)
+               tp_assign(entropy_count, entropy_count)
+               tp_assign(IP, IP)
+       ),
+
+       TP_printk("%s pool: nbytes %d entropy_count %d caller %pF",
+                 __get_str(pool_name), __entry->nbytes, __entry->entropy_count,
+                 (void *)__entry->IP)
+)
+
+
+DEFINE_EVENT(random__extract_entropy, extract_entropy,
+       TP_PROTO(const char *pool_name, int nbytes, int entropy_count,
+                unsigned long IP),
+
+       TP_ARGS(pool_name, nbytes, entropy_count, IP)
+)
+
+DEFINE_EVENT(random__extract_entropy, extract_entropy_user,
+       TP_PROTO(const char *pool_name, int nbytes, int entropy_count,
+                unsigned long IP),
+
+       TP_ARGS(pool_name, nbytes, entropy_count, IP)
+)
+
+
+
+#endif /* _TRACE_RANDOM_H */
+
+/* This part must be outside protection */
+#include "../../../probes/define_trace.h"