perf, events: add non-linear data support for raw records

[cascardo/linux.git] / include / linux / perf_event.h

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 1a827ce..e79e6c6 100644 (file)
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -69,9 +69,22 @@ struct perf_callchain_entry_ctx {
        bool                        contexts_maxed;
 };
 
+typedef unsigned long (*perf_copy_f)(void *dst, const void *src,
+                                    unsigned long len);
+
+struct perf_raw_frag {
+       union {
+               struct perf_raw_frag    *next;
+               unsigned long           pad;
+       };
+       perf_copy_f                     copy;
+       void                            *data;
+       u32                             size;
+} __packed;
+
 struct perf_raw_record {
+       struct perf_raw_frag            frag;
        u32                             size;
-       void                            *data;
 };
 
 /*
@@ -1283,6 +1296,11 @@ extern void perf_restore_debug_store(void);
 static inline void perf_restore_debug_store(void)                      { }
 #endif
 
+static __always_inline bool perf_raw_frag_last(const struct perf_raw_frag *frag)
+{
+       return frag->pad < sizeof(u64);
+}
+
 #define perf_output_put(handle, x) perf_output_copy((handle), &(x), sizeof(x))
 
 /*