kernel.git/drivers/hwmon/occ, branch linux-5.19.y

hwmon (occ): Retry for checksum failure

2022-10-24T07:58:28Z

[ Upstream commit dbed963ed62c4c2b8870a02c8b7dcb0c2af3ee0b ] Due to the OCC communication design with a shared SRAM area, checkum errors are expected due to corrupted buffer from OCC communications with other system components. Therefore, retry the command twice in the event of a checksum failure. Signed-off-by: Eddie James Acked-by: Guenter Roeck Link: https://lore.kernel.org/r/20220426154956.27205-3-eajames@linux.ibm.com Signed-off-by: Joel Stanley Signed-off-by: Sasha Levin

hwmon: (occ) Prevent power cap command overwriting poll response

2022-06-29T20:59:23Z

Currently, the response to the power cap command overwrites the first eight bytes of the poll response, since the commands use the same buffer. This means that user's get the wrong data between the time of sending the power cap and the next poll response update. Fix this by specifying a different buffer for the power cap command response. Fixes: 5b5513b88002 ("hwmon: Add On-Chip Controller (OCC) hwmon driver") Signed-off-by: Eddie James Link: https://lore.kernel.org/r/20220628203029.51747-1-eajames@linux.ibm.com Signed-off-by: Guenter Roeck

hwmon: (occ) Lock mutex in shutdown to prevent race with occ_active

2022-06-07T12:45:42Z

Unbinding the driver or removing the parent device at the same time as using the OCC active sysfs file can cause the driver to unregister the hwmon device twice. Prevent this by locking the occ mutex in the shutdown function. Signed-off-by: Eddie James Link: https://lore.kernel.org/r/20220606185455.21126-1-eajames@linux.ibm.com Signed-off-by: Guenter Roeck

hwmon: (occ) Delay hwmon registration until user request

2022-05-20T17:57:06Z

Instead of registering the hwmon device at probe time, use the existing "occ_active" sysfs file to control when the driver polls the OCC for sensor data and registers with hwmon. The reason for this change is that the SBE, which is the device by which the driver communicates with the OCC, cannot handle communications during certain system state transitions, resulting in unrecoverable system errors. Signed-off-by: Eddie James Link: https://lore.kernel.org/r/20220427140443.11428-1-eajames@linux.ibm.com Signed-off-by: Guenter Roeck

hwmon: (occ) Add soft minimum power cap attribute

2022-02-28T01:03:19Z

Export the power caps data for the soft minimum power cap through hwmon. Signed-off-by: Eddie James Reviewed-by: Joel Stanley Link: https://lore.kernel.org/r/20220215151022.7498-5-eajames@linux.ibm.com Signed-off-by: Guenter Roeck

hwmon: (occ) Add sysfs entries for additional extended status bits

2022-02-28T01:03:19Z

Add sysfs entries for DVFS due to a VRM Vdd over-temperature condition, and add the GPU throttling condition bits (such that if bit 1 is set, GPU1 is throttling). Signed-off-by: Eddie James Reviewed-by: Joel Stanley Link: https://lore.kernel.org/r/20220215151022.7498-4-eajames@linux.ibm.com Signed-off-by: Guenter Roeck

hwmon: (occ) Add sysfs entry for OCC mode

2022-02-28T01:03:19Z

BMC control applications need to check the OCC mode returned by the OCC poll response, so export it in sysfs with the other OCC-specific data. Signed-off-by: Eddie James Reviewed-by: Joel Stanley Link: https://lore.kernel.org/r/20220215151022.7498-3-eajames@linux.ibm.com Signed-off-by: Guenter Roeck

hwmon: (occ) Add sysfs entry for IPS (Idle Power Saver) status

2022-02-28T01:03:18Z

BMC control applications need to check the Idle Power Saver status byte returned by the OCC poll response, so export it in sysfs with the other OCC-specific data. Signed-off-by: Eddie James Reviewed-by: Joel Stanley Link: https://lore.kernel.org/r/20220215151022.7498-2-eajames@linux.ibm.com Signed-off-by: Guenter Roeck

Merge branch 'akpm' (patches from Andrew)

2021-11-06T21:08:17Z

Merge misc updates from Andrew Morton: "257 patches. Subsystems affected by this patch series: scripts, ocfs2, vfs, and mm (slab-generic, slab, slub, kconfig, dax, kasan, debug, pagecache, gup, swap, memcg, pagemap, mprotect, mremap, iomap, tracing, vmalloc, pagealloc, memory-failure, hugetlb, userfaultfd, vmscan, tools, memblock, oom-kill, hugetlbfs, migration, thp, readahead, nommu, ksm, vmstat, madvise, memory-hotplug, rmap, zsmalloc, highmem, zram, cleanups, kfence, and damon)" * emailed patches from Andrew Morton : (257 commits) mm/damon: remove return value from before_terminate callback mm/damon: fix a few spelling mistakes in comments and a pr_debug message mm/damon: simplify stop mechanism Docs/admin-guide/mm/pagemap: wordsmith page flags descriptions Docs/admin-guide/mm/damon/start: simplify the content Docs/admin-guide/mm/damon/start: fix a wrong link Docs/admin-guide/mm/damon/start: fix wrong example commands mm/damon/dbgfs: add adaptive_targets list check before enable monitor_on mm/damon: remove unnecessary variable initialization Documentation/admin-guide/mm/damon: add a document for DAMON_RECLAIM mm/damon: introduce DAMON-based Reclamation (DAMON_RECLAIM) selftests/damon: support watermarks mm/damon/dbgfs: support watermarks mm/damon/schemes: activate schemes based on a watermarks mechanism tools/selftests/damon: update for regions prioritization of schemes mm/damon/dbgfs: support prioritization weights mm/damon/vaddr,paddr: support pageout prioritization mm/damon/schemes: prioritize regions within the quotas mm/damon/selftests: support schemes quotas mm/damon/dbgfs: support quotas of schemes ...

mm: move kvmalloc-related functions to slab.h

2021-11-06T20:30:32Z

Not all files in the kernel should include mm.h. Migrating callers from kmalloc to kvmalloc is easier if the kvmalloc functions are in slab.h. [akpm@linux-foundation.org: move the new kvrealloc() also] [akpm@linux-foundation.org: drivers/hwmon/occ/p9_sbe.c needs slab.h] Link: https://lkml.kernel.org/r/20210622215757.3525604-1-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Acked-by: Pekka Enberg Cc: Christoph Lameter Cc: David Rientjes Cc: Joonsoo Kim Cc: Vlastimil Babka Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds