diff options
| author | Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> | 2020-06-04 00:13:30 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-25 15:41:57 +0200 |
| commit | ce5a0d403f8c9507240ea55e7fc2ff9843ac2a01 (patch) | |
| tree | a0c7c0f6bce25b0d4a030e846bfb831964bea321 /kernel | |
| parent | d29759068559c9b32b21845beab14016b759f248 (diff) | |
blktrace: fix endianness for blk_log_remap()
[ Upstream commit 5aec598c456fe3c1b71a1202cbb42bdc2a643277 ]
The function blk_log_remap() can be simplified by removing the
call to get_pdu_remap() that copies the values into extra variable to
print the data, which also fixes the endiannness warning reported by
sparse.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/blktrace.c | 19 |
1 files changed, 4 insertions, 15 deletions
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index be97e0b4ae7d..304a164f5e7e 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -1289,17 +1289,6 @@ static __u64 get_pdu_int(const struct trace_entry *ent, bool has_cg) return be64_to_cpu(*val); } -static void get_pdu_remap(const struct trace_entry *ent, - struct blk_io_trace_remap *r, bool has_cg) -{ - const struct blk_io_trace_remap *__r = pdu_start(ent, has_cg); - __u64 sector_from = __r->sector_from; - - r->device_from = be32_to_cpu(__r->device_from); - r->device_to = be32_to_cpu(__r->device_to); - r->sector_from = be64_to_cpu(sector_from); -} - typedef void (blk_log_action_t) (struct trace_iterator *iter, const char *act, bool has_cg); @@ -1425,13 +1414,13 @@ static void blk_log_with_error(struct trace_seq *s, static void blk_log_remap(struct trace_seq *s, const struct trace_entry *ent, bool has_cg) { - struct blk_io_trace_remap r = { .device_from = 0, }; + const struct blk_io_trace_remap *__r = pdu_start(ent, has_cg); - get_pdu_remap(ent, &r, has_cg); trace_seq_printf(s, "%llu + %u <- (%d,%d) %llu\n", t_sector(ent), t_sec(ent), - MAJOR(r.device_from), MINOR(r.device_from), - (unsigned long long)r.sector_from); + MAJOR(be32_to_cpu(__r->device_from)), + MINOR(be32_to_cpu(__r->device_from)), + be64_to_cpu(__r->sector_from)); } static void blk_log_plug(struct trace_seq *s, const struct trace_entry *ent, bool has_cg) |