diff options
| author | Johannes Thumshirn <johannes.thumshirn@wdc.com> | 2025-10-22 14:41:08 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-10-22 20:14:05 +0300 |
| commit | c44347d606260f36a81f6d8415a5af33cb3015fa (patch) | |
| tree | a5b365ce5d96b82fbc267684de03c0ce0c8d2d2d /include | |
| parent | 113cbd62824afdf62d2f3f092809cf37cc7f1dd8 (diff) | |
| download | linux-c44347d606260f36a81f6d8415a5af33cb3015fa.tar.xz | |
blktrace: add definitions for struct blk_io_trace2
Add definitions for the extended version of the blktrace protocol using a
wider action type to be able to record new actions in the kernel.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/blktrace_api.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/uapi/linux/blktrace_api.h b/include/uapi/linux/blktrace_api.h index a6958708d477..9f9834d76e00 100644 --- a/include/uapi/linux/blktrace_api.h +++ b/include/uapi/linux/blktrace_api.h @@ -94,6 +94,7 @@ enum blktrace_notify { #define BLK_IO_TRACE_MAGIC 0x65617400 #define BLK_IO_TRACE_VERSION 0x07 +#define BLK_IO_TRACE2_VERSION 0x08 /* * The trace itself @@ -113,6 +114,21 @@ struct blk_io_trace { /* cgroup id will be stored here if exists */ }; +struct blk_io_trace2 { + __u32 magic; /* MAGIC << 8 | BLK_IO_TRACE2_VERSION */ + __u32 sequence; /* event number */ + __u64 time; /* in nanoseconds */ + __u64 sector; /* disk offset */ + __u32 bytes; /* transfer length */ + __u32 pid; /* who did it */ + __u64 action; /* what happened */ + __u32 device; /* device number */ + __u32 cpu; /* on what cpu did it happen */ + __u16 error; /* completion error */ + __u16 pdu_len; /* length of data after this trace */ + __u8 pad[12]; + /* cgroup id will be stored here if it exists */ +}; /* * The remap event */ |