[PATCH blktrace v2 07/22] blkparse: pass magic to get_magic
From: Johannes Thumshirn <hidden>
Date: 2025-09-25 15:05:04
Also in:
linux-block, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
Pass the magic value to get_magic() instead of the whole 'struct blk_io_trace'. This is a preparation for distinguishing between two different types of blktrace protocol versions in blkparse. Signed-off-by: Johannes Thumshirn <redacted> --- blkparse.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/blkparse.c b/blkparse.c
index 512a2d2..d58322c 100644
--- a/blkparse.c
+++ b/blkparse.c@@ -2420,12 +2420,12 @@ static inline __u16 get_pdulen(struct blk_io_trace *bit) return __bswap_16(bit->pdu_len); } -static inline __u32 get_magic(struct blk_io_trace *bit) +static inline __u32 get_magic(__u32 magic) { if (data_is_native) - return bit->magic; + return magic; - return __bswap_32(bit->magic); + return __bswap_32(magic); } static int read_events(int fd, int always_block, int *fdblock)
@@ -2458,7 +2458,7 @@ static int read_events(int fd, int always_block, int *fdblock) if (data_is_native == -1 && check_data_endianness(bit->magic)) break; - magic = get_magic(bit); + magic = get_magic(bit->magic); if ((magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { fprintf(stderr, "Bad magic %x\n", magic); break;
@@ -2604,7 +2604,7 @@ static int ms_prime(struct ms_stream *msp) if (data_is_native == -1 && check_data_endianness(bit->magic)) goto err; - magic = get_magic(bit); + magic = get_magic(bit->magic); if ((magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { fprintf(stderr, "Bad magic %x\n", magic); goto err;
--
2.51.0