[PATCH v2 3/3] nvme: parse format command's lbafu when tracing

Guixin Liu
2024-01-30T11:35:00Z

Add the parse of format command's lbafu to calculate lbaf.

Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
---
drivers/nvme/host/trace.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/host/trace.c b/drivers/nvme/host/trace.c
index 4b8924abb4e1..7b752ee47f36 100644
--- a/drivers/nvme/host/trace.c
+++ b/drivers/nvme/host/trace.c
@@ -119,7 +119,10 @@ static const char *nvme_trace_get_lba_status(struct trace_seq *p,
static const char *nvme_trace_admin_format_nvm(struct trace_seq *p, u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
- u8 lbaf = cdw10[0] & 0xF;
+ /*
+ * lbafu(bit 13:12) is already in the upper 4 bits, lbafl: bit 03:00.
+ */
+ u8 lbaf = (cdw10[1] & 0x30) | (cdw10[0] & 0xF);
u8 mset = (cdw10[0] >> 4) & 0x1;
u8 pi = (cdw10[0] >> 5) & 0x7;
u8 pil = cdw10[1] & 0x1;
--
2.43.0