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| author | Alexei Starovoitov <ast@kernel.org> | 2026-09-30 09:59:20 +0000 |
|---|---|---|
| committer | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2026-10-01 18:40:05 +0200 |
| commit | aeb709c767aeca996e6011133e4f7bdb2a4af652 (patch) | |
| tree | c1c2bdbb4b6b7174a5bbe9e4c2c1f1c0204adcb5 /include/cxl/features.h | |
| download | linux-stable-aeb709c767aeca996e6011133e4f7bdb2a4af652.tar.gz linux-stable-aeb709c767aeca996e6011133e4f7bdb2a4af652.zip | |
selftests/bpf: Add a test for objects stuck in free_by_rcu_ttracegrafted
Delete all elements of BPF_F_NO_PREALLOC hash map in one batch. The first
free_bulk() starts RCU tasks trace GP and the rest of the elements are
freed while it's in flight. Wait for call_rcu_ttrace_in_progress to clear
in bpf_mem_cache of every cpu and check that free_by_rcu_ttrace and
waiting_for_gp_ttrace lists are empty.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20260930095920.601738-4-alexei.starovoitov@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Diffstat (limited to 'include/cxl/features.h')
| -rw-r--r-- | include/cxl/features.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/include/cxl/features.h b/include/cxl/features.h new file mode 100644 index 000000000..b9297693d --- /dev/null +++ b/include/cxl/features.h @@ -0,0 +1,88 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* Copyright(c) 2024-2025 Intel Corporation. */ +#ifndef __CXL_FEATURES_H__ +#define __CXL_FEATURES_H__ + +#include <linux/uuid.h> +#include <linux/fwctl.h> +#include <uapi/cxl/features.h> + +/* Feature UUIDs used by the kernel */ +#define CXL_FEAT_PATROL_SCRUB_UUID \ + UUID_INIT(0x96dad7d6, 0xfde8, 0x482b, 0xa7, 0x33, 0x75, 0x77, 0x4e, \ + 0x06, 0xdb, 0x8a) + +#define CXL_FEAT_ECS_UUID \ + UUID_INIT(0xe5b13f22, 0x2328, 0x4a14, 0xb8, 0xba, 0xb9, 0x69, 0x1e, \ + 0x89, 0x33, 0x86) + +#define CXL_FEAT_SPPR_UUID \ + UUID_INIT(0x892ba475, 0xfad8, 0x474e, 0x9d, 0x3e, 0x69, 0x2c, 0x91, \ + 0x75, 0x68, 0xbb) + +#define CXL_FEAT_HPPR_UUID \ + UUID_INIT(0x80ea4521, 0x786f, 0x4127, 0xaf, 0xb1, 0xec, 0x74, 0x59, \ + 0xfb, 0x0e, 0x24) + +#define CXL_FEAT_CACHELINE_SPARING_UUID \ + UUID_INIT(0x96C33386, 0x91dd, 0x44c7, 0x9e, 0xcb, 0xfd, 0xaf, 0x65, \ + 0x03, 0xba, 0xc4) + +#define CXL_FEAT_ROW_SPARING_UUID \ + UUID_INIT(0x450ebf67, 0xb135, 0x4f97, 0xa4, 0x98, 0xc2, 0xd5, 0x7f, \ + 0x27, 0x9b, 0xed) + +#define CXL_FEAT_BANK_SPARING_UUID \ + UUID_INIT(0x78b79636, 0x90ac, 0x4b64, 0xa4, 0xef, 0xfa, 0xac, 0x5d, \ + 0x18, 0xa8, 0x63) + +#define CXL_FEAT_RANK_SPARING_UUID \ + UUID_INIT(0x34dbaff5, 0x0552, 0x4281, 0x8f, 0x76, 0xda, 0x0b, 0x5e, \ + 0x7a, 0x76, 0xa7) + +/* Feature commands capability supported by a device */ +enum cxl_features_capability { + CXL_FEATURES_NONE = 0, + CXL_FEATURES_RO, + CXL_FEATURES_RW, +}; + +/** + * struct cxl_features_state - The Features state for the device + * @cxlds: Pointer to CXL device state + * @entries: CXl feature entry context + */ +struct cxl_features_state { + struct cxl_dev_state *cxlds; + struct cxl_feat_entries { + int num_features; + int num_user_features; + struct cxl_feat_entry ent[] __counted_by(num_features); + } *entries; +}; + +struct cxl_mailbox; +struct cxl_memdev; +#ifdef CONFIG_CXL_FEATURES +struct cxl_features_state *to_cxlfs(struct cxl_dev_state *cxlds); +int devm_cxl_setup_features(struct cxl_dev_state *cxlds); +int devm_cxl_setup_fwctl(struct device *host, struct cxl_memdev *cxlmd); +#else +static inline struct cxl_features_state *to_cxlfs(struct cxl_dev_state *cxlds) +{ + return NULL; +} + +static inline int devm_cxl_setup_features(struct cxl_dev_state *cxlds) +{ + return -EOPNOTSUPP; +} + +static inline int devm_cxl_setup_fwctl(struct device *host, + struct cxl_memdev *cxlmd) +{ + return -EOPNOTSUPP; +} +#endif + +#endif |