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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-07 13:11:40 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-07 13:11:40 +0000 |
| commit | 8b0a8165cdad0f4133837d753649ef4682e42c3b (patch) | |
| tree | 5c58f869f31ddb1f7bd6e8bdea269b680b36c5b6 /drivers/acpi/numa/hmat.c | |
| parent | Releasing progress-linux version 6.8.12-1~progress7.99u1. (diff) | |
| download | linux-8b0a8165cdad0f4133837d753649ef4682e42c3b.tar.xz linux-8b0a8165cdad0f4133837d753649ef4682e42c3b.zip | |
Merging upstream version 6.9.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/acpi/numa/hmat.c')
| -rw-r--r-- | drivers/acpi/numa/hmat.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/acpi/numa/hmat.c b/drivers/acpi/numa/hmat.c index 75e9aac432..2c8ccc91eb 100644 --- a/drivers/acpi/numa/hmat.c +++ b/drivers/acpi/numa/hmat.c @@ -74,6 +74,7 @@ struct memory_target { struct node_cache_attrs cache_attrs; u8 gen_port_device_handle[ACPI_SRAT_DEVICE_HANDLE_SIZE]; bool registered; + bool ext_updated; /* externally updated */ }; struct memory_initiator { @@ -328,6 +329,35 @@ static void hmat_update_target_access(struct memory_target *target, } } +int hmat_update_target_coordinates(int nid, struct access_coordinate *coord, + enum access_coordinate_class access) +{ + struct memory_target *target; + int pxm; + + if (nid == NUMA_NO_NODE) + return -EINVAL; + + pxm = node_to_pxm(nid); + guard(mutex)(&target_lock); + target = find_mem_target(pxm); + if (!target) + return -ENODEV; + + hmat_update_target_access(target, ACPI_HMAT_READ_LATENCY, + coord->read_latency, access); + hmat_update_target_access(target, ACPI_HMAT_WRITE_LATENCY, + coord->write_latency, access); + hmat_update_target_access(target, ACPI_HMAT_READ_BANDWIDTH, + coord->read_bandwidth, access); + hmat_update_target_access(target, ACPI_HMAT_WRITE_BANDWIDTH, + coord->write_bandwidth, access); + target->ext_updated = true; + + return 0; +} +EXPORT_SYMBOL_GPL(hmat_update_target_coordinates); + static __init void hmat_add_locality(struct acpi_hmat_locality *hmat_loc) { struct memory_locality *loc; @@ -699,6 +729,10 @@ static void hmat_update_target_attrs(struct memory_target *target, u32 best = 0; int i; + /* Don't update if an external agent has changed the data. */ + if (target->ext_updated) + return; + /* Don't update for generic port if there's no device handle */ if ((access == NODE_ACCESS_CLASS_GENPORT_SINK_LOCAL || access == NODE_ACCESS_CLASS_GENPORT_SINK_CPU) && |