blkparse: Handle cgroup information

[blktrace.git] / blkparse_fmt.c

diff --git a/blkparse_fmt.c b/blkparse_fmt.c
index c42e6d7b7219d532c4ae34d937e0ea9660535426..df2f6ce2148a473e20f5cd9afd381f0021bfd42d 100644 (file)
--- a/blkparse_fmt.c
+++ b/blkparse_fmt.c
@@ -205,6 +205,21 @@ static void print_field(char *act, struct per_cpu_info *pci,
        case 'e':
                fprintf(ofp, strcat(format, "d"), t->error);
                break;
+       case 'g': {
+               char cgidstr[24];
+               u32 ino = 0, gen = 0;
+
+               if (t->action & __BLK_TA_CGROUP) {
+                       struct blk_io_cgroup_payload *cgid =
+                               (struct blk_io_cgroup_payload *)pdu_buf;
+
+                       ino = cgid->ino;
+                       gen = cgid->gen;
+               }
+               sprintf(cgidstr, "%x,%x", ino, gen);
+               fprintf(ofp, strcat(format, "s"), cgidstr);
+               break;
+       }
        case 'M':
                fprintf(ofp, strcat(format, "d"), MAJOR(t->device));
                break;