diff options
Diffstat (limited to 'blktrace.h')
| -rw-r--r-- | blktrace.h | 43 |
1 files changed, 27 insertions, 16 deletions
@@ -53,6 +53,7 @@ struct per_cpu_info { }; extern FILE *ofp; +extern int data_is_native; #define CHECK_MAGIC(t) (((t)->magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) #define SUPPORTED_VERSION (0x06) @@ -90,24 +91,11 @@ static inline int verify_trace(struct blk_io_trace *t) return 0; } -static inline void trace_to_be(struct blk_io_trace *t) -{ - t->magic = cpu_to_be32(t->magic); - t->sequence = cpu_to_be32(t->sequence); - t->time = cpu_to_be64(t->time); - t->sector = cpu_to_be64(t->sector); - t->bytes = cpu_to_be32(t->bytes); - t->action = cpu_to_be32(t->action); - t->pid = cpu_to_be32(t->pid); - t->cpu = cpu_to_be32(t->cpu); - t->error = cpu_to_be16(t->error); - t->pdu_len = cpu_to_be16(t->pdu_len); - t->device = cpu_to_be32(t->device); - /* t->comm is a string (endian neutral) */ -} - static inline void trace_to_cpu(struct blk_io_trace *t) { + if (data_is_native) + return; + t->magic = be32_to_cpu(t->magic); t->sequence = be32_to_cpu(t->sequence); t->time = be64_to_cpu(t->time); @@ -122,6 +110,29 @@ static inline void trace_to_cpu(struct blk_io_trace *t) /* t->comm is a string (endian neutral) */ } +/* + * check whether data is native or not + */ +static inline int check_data_endianness(struct blk_io_trace *bit) +{ + u32 magic; + + if ((bit->magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) { + fprintf(stderr, "data is native\n"); + data_is_native = 1; + return 0; + } + + magic = __bswap_32(bit->magic); + if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) { + fprintf(stderr, "data is not native\n"); + data_is_native = 0; + return 0; + } + + return 1; +} + extern void set_all_format_specs(char *); extern int add_format_spec(char *); extern void process_fmt(char *, struct per_cpu_info *, struct blk_io_trace *, |