fio: Introduce the log_prio option

[fio.git] / iolog.h

diff --git a/iolog.h b/iolog.h
index 9e382cc0211748254f97dc8071176319d874a591..7d66b7c42fb6e4c0d455165d0ebf56467a7b7e0b 100644 (file)
--- a/iolog.h
+++ b/iolog.h
@@ -42,7 +42,7 @@ struct io_sample {
        uint64_t time;
        union io_sample_data data;
        uint32_t __ddir;
-       uint8_t priority_bit;
+       uint16_t priority;
        uint64_t bs;
 };
 
@@ -104,6 +104,11 @@ struct io_log {
         */
        unsigned int log_offset;
 
+       /*
+        * Log I/O priorities
+        */
+       unsigned int log_prio;
+
        /*
         * Max size of log entries before a chunk is compressed
         */
@@ -145,7 +150,13 @@ struct io_log {
  * If the upper bit is set, then we have the offset as well
  */
 #define LOG_OFFSET_SAMPLE_BIT  0x80000000U
-#define io_sample_ddir(io)     ((io)->__ddir & ~LOG_OFFSET_SAMPLE_BIT)
+/*
+ * If the bit following the upper bit is set, then we have the priority
+ */
+#define LOG_PRIO_SAMPLE_BIT    0x40000000U
+
+#define LOG_SAMPLE_BITS                (LOG_OFFSET_SAMPLE_BIT | LOG_PRIO_SAMPLE_BIT)
+#define io_sample_ddir(io)     ((io)->__ddir & ~LOG_SAMPLE_BITS)
 
 static inline void io_sample_set_ddir(struct io_log *log,
                                      struct io_sample *io,
@@ -262,6 +273,7 @@ struct log_params {
        int hist_coarseness;
        int log_type;
        int log_offset;
+       int log_prio;
        int log_gz;
        int log_gz_store;
        int log_compress;