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| author |   James Smart <jsmart2021@gmail.com> | 2022-08-18 18:17:32 -0700 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2022-08-31 23:39:58 -0400 |
| commit | bd269188ea94e40ab002cad7b0df8f12b8f0de54 (patch) | |
| tree | e82fa049a570aedd32d842a55eb3c94de81df73c /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | scsi: lpfc: Fix null ndlp ptr dereference in abnormal exit path for GFT_ID (diff) | |
| download | linux-dev-bd269188ea94e40ab002cad7b0df8f12b8f0de54.tar.xz linux-dev-bd269188ea94e40ab002cad7b0df8f12b8f0de54.zip | |
scsi: lpfc: Rework MIB Rx Monitor debug info logic
The kernel test robot reported the following sparse warning:
arch/arm64/include/asm/cmpxchg.h:88:1: sparse: sparse: cast truncates
bits from constant value (369 becomes 69)
On arm64, atomic_xchg only works on 8-bit byte fields. Thus, the macro
usage of LPFC_RXMONITOR_TABLE_IN_USE can be unintentionally truncated
leading to all logic involving the LPFC_RXMONITOR_TABLE_IN_USE macro to not
work properly.
Replace the Rx Table atomic_t indexing logic with a new
lpfc_rx_info_monitor structure that holds a circular ring buffer. For
locking semantics, a spinlock_t is used.
Link: https://lore.kernel.org/r/20220819011736.14141-4-jsmart2021@gmail.com
Fixes: 17b27ac59224 ("scsi: lpfc: Add rx monitoring statistics")
Cc: <stable@vger.kernel.org> # v5.15+
Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions