bpf, mm: recharge bpf memory from offline memcg #123
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If there is no btf_id or frozen, it will not show the pids, but the pids doesn't depends on any one of them. Fixes: 9330986 ("bpf: Add bloom filter map implementation") Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Cc: Joanne Koong <joannekoong@fb.com>
bpf map can be charged to a memcg, so we'd better show the memcg info to
do better bpf memory management. This patch adds a new field
"memcg_state" to show whether a bpf map is charged to a memcg and
whether the memcg is offlined. Currently it has three values,
0 : not charged
-1 : the charged memcg is offline
1 : the charged memcg is online
For instance,
$ bpftool map show
2: array name iterator.rodata flags 0x480
key 4B value 98B max_entries 1 memlock 4096B
btf_id 240 frozen
memcg_state 0
3: hash name calico_failsafe flags 0x1
key 4B value 1B max_entries 65535 memlock 524288B
memcg_state 1
6: lru_hash name access_record flags 0x0
key 8B value 24B max_entries 102400 memlock 3276800B
btf_id 256
memcg_state -1
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
This patch implements a methord to charge or uncharge related pages or objects from a given kmalloc-ed address. It is similar to kfree, except that it doesn't touch the pages or objects while does account only. Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
This patch adds a methord to charge or uncharge a given vmalloc-ed address. It is similar to vfree, except that it doesn't touch the related pages while does account only. Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
This patch adds a methord to charge or uncharge a percpu address. It is similar to free_percpu except that it doesn't touch the related pages while does account only. Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
A new helper bpf_map_idr_find() is introduced for later use. Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
This patch adds a new bpf syscall BPF_MAP_RECHARGE, which means to recharge the allocated memory of a bpf map from an offline memcg to the current memcg. The recharge methord for each map will be implemented in the follow-up patches. Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
These two helpers will be used in map specific files later. Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
This patch supports recharge for hash map. We have already known how the hash map is allocated and freed, we can also know how to charge and uncharge the hash map. Firstly, we need to uncharge it from the old memcg, then charge it to the current memcg. The old memcg must be an offline memcg. Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Author
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Master branch: e878ae2 |
Author
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At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=621502 expired. Closing PR. |
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Like commit 1cf3bfc ("bpf: Support 64-bit pointers to kfuncs") for s390x, add support for 64-bit pointers to kfuncs for LoongArch. Since the infrastructure is already implemented in BPF core, the only thing need to be done is to override bpf_jit_supports_far_kfunc_call(). Before this change, several test_verifier tests failed: # ./test_verifier | grep # | grep FAIL #119/p calls: invalid kfunc call: ptr_to_mem to struct with non-scalar FAIL #120/p calls: invalid kfunc call: ptr_to_mem to struct with nesting depth > 4 FAIL #121/p calls: invalid kfunc call: ptr_to_mem to struct with FAM FAIL #122/p calls: invalid kfunc call: reg->type != PTR_TO_CTX FAIL #123/p calls: invalid kfunc call: void * not allowed in func proto without mem size arg FAIL #124/p calls: trigger reg2btf_ids[reg->type] for reg->type > __BPF_REG_TYPE_MAX FAIL #125/p calls: invalid kfunc call: reg->off must be zero when passed to release kfunc FAIL #126/p calls: invalid kfunc call: don't match first member type when passed to release kfunc FAIL #127/p calls: invalid kfunc call: PTR_TO_BTF_ID with negative offset FAIL #128/p calls: invalid kfunc call: PTR_TO_BTF_ID with variable offset FAIL #129/p calls: invalid kfunc call: referenced arg needs refcounted PTR_TO_BTF_ID FAIL #130/p calls: valid kfunc call: referenced arg needs refcounted PTR_TO_BTF_ID FAIL #486/p map_kptr: ref: reference state created and released on xchg FAIL This is because the kfuncs in the loaded module are far away from __bpf_call_base: ffff800002009440 t bpf_kfunc_call_test_fail1 [bpf_testmod] 9000000002e128d8 T __bpf_call_base The offset relative to __bpf_call_base does NOT fit in s32, which breaks the assumption in BPF core. Enable bpf_jit_supports_far_kfunc_call() lifts this limit. Note that to reproduce the above result, tools/testing/selftests/bpf/config should be applied, and run the test with JIT enabled, unpriv BPF enabled. With this change, the test_verifier tests now all passed: # ./test_verifier ... Summary: 777 PASSED, 0 SKIPPED, 0 FAILED Tested-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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I hit the following failure when running selftests with internal backported upstream kernel: test_ksyms:PASS:kallsyms_fopen 0 nsec test_ksyms:FAIL:ksym_find symbol 'bpf_link_fops' not found #123 ksyms:FAIL In /proc/kallsyms, we have $ cat /proc/kallsyms | grep bpf_link_fops ffffffff829f0cb0 d bpf_link_fops.llvm.12608678492448798416 The CONFIG_LTO_CLANG_THIN is enabled in the kernel which is responsible for bpf_link_fops.llvm.12608678492448798416 symbol name. In prog_tests/ksyms.c we have kallsyms_find("bpf_link_fops", &link_fops_addr) and kallsyms_find() compares "bpf_link_fops" with symbols in /proc/kallsyms in order to find the entry. With bpf_link_fops.llvm.<hash> in /proc/kallsyms, the kallsyms_find() failed. To fix the issue, in kallsyms_find(), if a symbol has suffix .llvm.<hash>, that suffix will be ignored for comparison. This fixed the test failure. Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
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I hit the following failure when running selftests with internal backported upstream kernel: test_ksyms:PASS:kallsyms_fopen 0 nsec test_ksyms:FAIL:ksym_find symbol 'bpf_link_fops' not found #123 ksyms:FAIL In /proc/kallsyms, we have $ cat /proc/kallsyms | grep bpf_link_fops ffffffff829f0cb0 d bpf_link_fops.llvm.12608678492448798416 The CONFIG_LTO_CLANG_THIN is enabled in the kernel which is responsible for bpf_link_fops.llvm.12608678492448798416 symbol name. In prog_tests/ksyms.c we have kallsyms_find("bpf_link_fops", &link_fops_addr) and kallsyms_find() compares "bpf_link_fops" with symbols in /proc/kallsyms in order to find the entry. With bpf_link_fops.llvm.<hash> in /proc/kallsyms, the kallsyms_find() failed. To fix the issue, in kallsyms_find(), if a symbol has suffix .llvm.<hash>, that suffix will be ignored for comparison. This fixed the test failure. Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
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I hit the following failure when running selftests with internal backported upstream kernel: test_ksyms:PASS:kallsyms_fopen 0 nsec test_ksyms:FAIL:ksym_find symbol 'bpf_link_fops' not found #123 ksyms:FAIL In /proc/kallsyms, we have $ cat /proc/kallsyms | grep bpf_link_fops ffffffff829f0cb0 d bpf_link_fops.llvm.12608678492448798416 The CONFIG_LTO_CLANG_THIN is enabled in the kernel which is responsible for bpf_link_fops.llvm.12608678492448798416 symbol name. In prog_tests/ksyms.c we have kallsyms_find("bpf_link_fops", &link_fops_addr) and kallsyms_find() compares "bpf_link_fops" with symbols in /proc/kallsyms in order to find the entry. With bpf_link_fops.llvm.<hash> in /proc/kallsyms, the kallsyms_find() failed. To fix the issue, in kallsyms_find(), if a symbol has suffix .llvm.<hash>, that suffix will be ignored for comparison. This fixed the test failure. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20240604180034.1356016-1-yonghong.song@linux.dev
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Include tests that check for rejection in erroneous cases, like unbalanced IRQ-disabled counts, within and across subprogs, invalid IRQ flag state or input to kfuncs, behavior upon overwriting IRQ saved state on stack, interaction with sleepable kfuncs/helpers, global functions, and out of order restore. Include some success scenarios as well to demonstrate usage. #123/1 irq/irq_restore_missing_1:OK #123/2 irq/irq_restore_missing_2:OK #123/3 irq/irq_restore_missing_3:OK #123/4 irq/irq_restore_missing_3_minus_2:OK #123/5 irq/irq_restore_missing_1_subprog:OK #123/6 irq/irq_restore_missing_2_subprog:OK #123/7 irq/irq_restore_missing_3_subprog:OK #123/8 irq/irq_restore_missing_3_minus_2_subprog:OK #123/9 irq/irq_balance:OK #123/10 irq/irq_balance_n:OK #123/11 irq/irq_balance_subprog:OK #123/12 irq/irq_balance_n_subprog:OK #123/13 irq/irq_global_subprog:OK #123/14 irq/irq_restore_ooo:OK #123/15 irq/irq_restore_ooo_3:OK #123/16 irq/irq_restore_3_subprog:OK #123/17 irq/irq_restore_4_subprog:OK #123/18 irq/irq_restore_ooo_3_subprog:OK #123/19 irq/irq_restore_invalid:OK #123/20 irq/irq_save_invalid:OK #123/21 irq/irq_restore_iter:OK #123/22 irq/irq_save_iter:OK #123/23 irq/irq_flag_overwrite:OK #123/24 irq/irq_flag_overwrite_partial:OK #123/25 irq/irq_sleepable_helper:OK #123/26 irq/irq_sleepable_kfunc:OK #123 irq:OK Summary: 1/26 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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Include tests that check for rejection in erroneous cases, like unbalanced IRQ-disabled counts, within and across subprogs, invalid IRQ flag state or input to kfuncs, behavior upon overwriting IRQ saved state on stack, interaction with sleepable kfuncs/helpers, global functions, and out of order restore. Include some success scenarios as well to demonstrate usage. #123/1 irq/irq_restore_missing_1:OK #123/2 irq/irq_restore_missing_2:OK #123/3 irq/irq_restore_missing_3:OK #123/4 irq/irq_restore_missing_3_minus_2:OK #123/5 irq/irq_restore_missing_1_subprog:OK #123/6 irq/irq_restore_missing_2_subprog:OK #123/7 irq/irq_restore_missing_3_subprog:OK #123/8 irq/irq_restore_missing_3_minus_2_subprog:OK #123/9 irq/irq_balance:OK #123/10 irq/irq_balance_n:OK #123/11 irq/irq_balance_subprog:OK #123/12 irq/irq_balance_n_subprog:OK #123/13 irq/irq_global_subprog:OK #123/14 irq/irq_restore_ooo:OK #123/15 irq/irq_restore_ooo_3:OK #123/16 irq/irq_restore_3_subprog:OK #123/17 irq/irq_restore_4_subprog:OK #123/18 irq/irq_restore_ooo_3_subprog:OK #123/19 irq/irq_restore_invalid:OK #123/20 irq/irq_save_invalid:OK #123/21 irq/irq_restore_iter:OK #123/22 irq/irq_save_iter:OK #123/23 irq/irq_flag_overwrite:OK #123/24 irq/irq_flag_overwrite_partial:OK #123/25 irq/irq_sleepable_helper:OK #123/26 irq/irq_sleepable_kfunc:OK #123 irq:OK Summary: 1/26 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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Include tests that check for rejection in erroneous cases, like unbalanced IRQ-disabled counts, within and across subprogs, invalid IRQ flag state or input to kfuncs, behavior upon overwriting IRQ saved state on stack, interaction with sleepable kfuncs/helpers, global functions, and out of order restore. Include some success scenarios as well to demonstrate usage. #123/1 irq/irq_restore_missing_1:OK #123/2 irq/irq_restore_missing_2:OK #123/3 irq/irq_restore_missing_3:OK #123/4 irq/irq_restore_missing_3_minus_2:OK #123/5 irq/irq_restore_missing_1_subprog:OK #123/6 irq/irq_restore_missing_2_subprog:OK #123/7 irq/irq_restore_missing_3_subprog:OK #123/8 irq/irq_restore_missing_3_minus_2_subprog:OK #123/9 irq/irq_balance:OK #123/10 irq/irq_balance_n:OK #123/11 irq/irq_balance_subprog:OK #123/12 irq/irq_balance_n_subprog:OK #123/13 irq/irq_global_subprog:OK #123/14 irq/irq_restore_ooo:OK #123/15 irq/irq_restore_ooo_3:OK #123/16 irq/irq_restore_3_subprog:OK #123/17 irq/irq_restore_4_subprog:OK #123/18 irq/irq_restore_ooo_3_subprog:OK #123/19 irq/irq_restore_invalid:OK #123/20 irq/irq_save_invalid:OK #123/21 irq/irq_restore_iter:OK #123/22 irq/irq_save_iter:OK #123/23 irq/irq_flag_overwrite:OK #123/24 irq/irq_flag_overwrite_partial:OK #123/25 irq/irq_sleepable_helper:OK #123/26 irq/irq_sleepable_kfunc:OK #123 irq:OK Summary: 1/26 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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Include tests that check for rejection in erroneous cases, like unbalanced IRQ-disabled counts, within and across subprogs, invalid IRQ flag state or input to kfuncs, behavior upon overwriting IRQ saved state on stack, interaction with sleepable kfuncs/helpers, global functions, and out of order restore. Include some success scenarios as well to demonstrate usage. #123/1 irq/irq_restore_missing_1:OK #123/2 irq/irq_restore_missing_2:OK #123/3 irq/irq_restore_missing_3:OK #123/4 irq/irq_restore_missing_3_minus_2:OK #123/5 irq/irq_restore_missing_1_subprog:OK #123/6 irq/irq_restore_missing_2_subprog:OK #123/7 irq/irq_restore_missing_3_subprog:OK #123/8 irq/irq_restore_missing_3_minus_2_subprog:OK #123/9 irq/irq_balance:OK #123/10 irq/irq_balance_n:OK #123/11 irq/irq_balance_subprog:OK #123/12 irq/irq_balance_n_subprog:OK #123/13 irq/irq_global_subprog:OK #123/14 irq/irq_restore_ooo:OK #123/15 irq/irq_restore_ooo_3:OK #123/16 irq/irq_restore_3_subprog:OK #123/17 irq/irq_restore_4_subprog:OK #123/18 irq/irq_restore_ooo_3_subprog:OK #123/19 irq/irq_restore_invalid:OK #123/20 irq/irq_save_invalid:OK #123/21 irq/irq_restore_iter:OK #123/22 irq/irq_save_iter:OK #123/23 irq/irq_flag_overwrite:OK #123/24 irq/irq_flag_overwrite_partial:OK #123/25 irq/irq_sleepable_helper:OK #123/26 irq/irq_sleepable_kfunc:OK #123 irq:OK Summary: 1/26 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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Include tests that check for rejection in erroneous cases, like unbalanced IRQ-disabled counts, within and across subprogs, invalid IRQ flag state or input to kfuncs, behavior upon overwriting IRQ saved state on stack, interaction with sleepable kfuncs/helpers, global functions, and out of order restore. Include some success scenarios as well to demonstrate usage. #123/1 irq/irq_restore_missing_1:OK #123/2 irq/irq_restore_missing_2:OK #123/3 irq/irq_restore_missing_3:OK #123/4 irq/irq_restore_missing_3_minus_2:OK #123/5 irq/irq_restore_missing_1_subprog:OK #123/6 irq/irq_restore_missing_2_subprog:OK #123/7 irq/irq_restore_missing_3_subprog:OK #123/8 irq/irq_restore_missing_3_minus_2_subprog:OK #123/9 irq/irq_balance:OK #123/10 irq/irq_balance_n:OK #123/11 irq/irq_balance_subprog:OK #123/12 irq/irq_balance_n_subprog:OK #123/13 irq/irq_global_subprog:OK #123/14 irq/irq_restore_ooo:OK #123/15 irq/irq_restore_ooo_3:OK #123/16 irq/irq_restore_3_subprog:OK #123/17 irq/irq_restore_4_subprog:OK #123/18 irq/irq_restore_ooo_3_subprog:OK #123/19 irq/irq_restore_invalid:OK #123/20 irq/irq_save_invalid:OK #123/21 irq/irq_restore_iter:OK #123/22 irq/irq_save_iter:OK #123/23 irq/irq_flag_overwrite:OK #123/24 irq/irq_flag_overwrite_partial:OK #123/25 irq/irq_sleepable_helper:OK #123/26 irq/irq_sleepable_kfunc:OK #123 irq:OK Summary: 1/26 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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Include tests that check for rejection in erroneous cases, like unbalanced IRQ-disabled counts, within and across subprogs, invalid IRQ flag state or input to kfuncs, behavior upon overwriting IRQ saved state on stack, interaction with sleepable kfuncs/helpers, global functions, and out of order restore. Include some success scenarios as well to demonstrate usage. #123/1 irq/irq_restore_missing_1:OK #123/2 irq/irq_restore_missing_2:OK #123/3 irq/irq_restore_missing_3:OK #123/4 irq/irq_restore_missing_3_minus_2:OK #123/5 irq/irq_restore_missing_1_subprog:OK #123/6 irq/irq_restore_missing_2_subprog:OK #123/7 irq/irq_restore_missing_3_subprog:OK #123/8 irq/irq_restore_missing_3_minus_2_subprog:OK #123/9 irq/irq_balance:OK #123/10 irq/irq_balance_n:OK #123/11 irq/irq_balance_subprog:OK #123/12 irq/irq_balance_n_subprog:OK #123/13 irq/irq_global_subprog:OK #123/14 irq/irq_restore_ooo:OK #123/15 irq/irq_restore_ooo_3:OK #123/16 irq/irq_restore_3_subprog:OK #123/17 irq/irq_restore_4_subprog:OK #123/18 irq/irq_restore_ooo_3_subprog:OK #123/19 irq/irq_restore_invalid:OK #123/20 irq/irq_save_invalid:OK #123/21 irq/irq_restore_iter:OK #123/22 irq/irq_save_iter:OK #123/23 irq/irq_flag_overwrite:OK #123/24 irq/irq_flag_overwrite_partial:OK #123/25 irq/irq_sleepable_helper:OK #123/26 irq/irq_sleepable_kfunc:OK #123 irq:OK Summary: 1/26 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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Include tests that check for rejection in erroneous cases, like unbalanced IRQ-disabled counts, within and across subprogs, invalid IRQ flag state or input to kfuncs, behavior upon overwriting IRQ saved state on stack, interaction with sleepable kfuncs/helpers, global functions, and out of order restore. Include some success scenarios as well to demonstrate usage. #123/1 irq/irq_restore_missing_1:OK #123/2 irq/irq_restore_missing_2:OK #123/3 irq/irq_restore_missing_3:OK #123/4 irq/irq_restore_missing_3_minus_2:OK #123/5 irq/irq_restore_missing_1_subprog:OK #123/6 irq/irq_restore_missing_2_subprog:OK #123/7 irq/irq_restore_missing_3_subprog:OK #123/8 irq/irq_restore_missing_3_minus_2_subprog:OK #123/9 irq/irq_balance:OK #123/10 irq/irq_balance_n:OK #123/11 irq/irq_balance_subprog:OK #123/12 irq/irq_balance_n_subprog:OK #123/13 irq/irq_global_subprog:OK #123/14 irq/irq_restore_ooo:OK #123/15 irq/irq_restore_ooo_3:OK #123/16 irq/irq_restore_3_subprog:OK #123/17 irq/irq_restore_4_subprog:OK #123/18 irq/irq_restore_ooo_3_subprog:OK #123/19 irq/irq_restore_invalid:OK #123/20 irq/irq_save_invalid:OK #123/21 irq/irq_restore_iter:OK #123/22 irq/irq_save_iter:OK #123/23 irq/irq_flag_overwrite:OK #123/24 irq/irq_flag_overwrite_partial:OK #123/25 irq/irq_sleepable_helper:OK #123/26 irq/irq_sleepable_kfunc:OK #123 irq:OK Summary: 1/26 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Acked-by: Eduard Zingerman <eddyz87@gmail.com>
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Include tests that check for rejection in erroneous cases, like unbalanced IRQ-disabled counts, within and across subprogs, invalid IRQ flag state or input to kfuncs, behavior upon overwriting IRQ saved state on stack, interaction with sleepable kfuncs/helpers, global functions, and out of order restore. Include some success scenarios as well to demonstrate usage. #123/1 irq/irq_restore_missing_1:OK #123/2 irq/irq_restore_missing_2:OK #123/3 irq/irq_restore_missing_3:OK #123/4 irq/irq_restore_missing_3_minus_2:OK #123/5 irq/irq_restore_missing_1_subprog:OK #123/6 irq/irq_restore_missing_2_subprog:OK #123/7 irq/irq_restore_missing_3_subprog:OK #123/8 irq/irq_restore_missing_3_minus_2_subprog:OK #123/9 irq/irq_balance:OK #123/10 irq/irq_balance_n:OK #123/11 irq/irq_balance_subprog:OK #123/12 irq/irq_balance_n_subprog:OK #123/13 irq/irq_global_subprog:OK #123/14 irq/irq_restore_ooo:OK #123/15 irq/irq_restore_ooo_3:OK #123/16 irq/irq_restore_3_subprog:OK #123/17 irq/irq_restore_4_subprog:OK #123/18 irq/irq_restore_ooo_3_subprog:OK #123/19 irq/irq_restore_invalid:OK #123/20 irq/irq_save_invalid:OK #123/21 irq/irq_restore_iter:OK #123/22 irq/irq_save_iter:OK #123/23 irq/irq_flag_overwrite:OK #123/24 irq/irq_flag_overwrite_partial:OK #123/25 irq/irq_sleepable_helper:OK #123/26 irq/irq_sleepable_kfunc:OK #123 irq:OK Summary: 1/26 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Acked-by: Eduard Zingerman <eddyz87@gmail.com>
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Pull request for series with
subject: bpf, mm: recharge bpf memory from offline memcg
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=621502