[PATCH] Add support for tracing multiple devices

[blktrace.git] / blktrace_api.h

diff --git a/blktrace_api.h b/blktrace_api.h
index e79e151b464cb107ec89373f926d7d3b2d3419dc..2b3a7baa992e4f7853fb0b60bd49e749982947e1 100644 (file)
--- a/blktrace_api.h
+++ b/blktrace_api.h
@@ -51,7 +51,7 @@ enum {
 #define BLK_TA_COMPLETE                (__BLK_TA_COMPLETE| BLK_TC_ACT(BLK_TC_COMPLETE))
 
 #define BLK_IO_TRACE_MAGIC     0x65617400
-#define BLK_IO_TRACE_VERSION   0x04
+#define BLK_IO_TRACE_VERSION   0x05
 
 /*
  * The trace itself
@@ -67,6 +67,7 @@ struct blk_io_trace {
        __u32 cpu;              /* on what cpu did it happen */
        __u16 error;            /* completion error */
        __u16 pdu_len;          /* length of data after this trace */
+       __u32 device;           /* device identifier (dev_t) */
        char  comm[16];         /* task command name (TASK_COMM_LEN) */
 };