diff options
author | Mark Brown <broonie@kernel.org> | 2024-11-14 15:36:46 +0000 |
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committer | Mark Brown <broonie@kernel.org> | 2024-11-14 15:36:46 +0000 |
commit | 9a5a75bf1f485e2d109303a996d147b94c5e79c9 (patch) | |
tree | f931f0d17bef0b6ad980aaf3d2d8b874ef2b749c /kernel/bpf/memalloc.c | |
parent | f3f9f0de30a5106078cd610f80eaa6f9386b2186 (diff) | |
parent | 3b7e11a0116c30848d44429650ad80f9cc3bd963 (diff) |
ASoc: simple-mux: Allow to specify an idle-state
Merge series from "Hendrik v. Raven" <h.v.raven@merzmedtech.de>:
This series adds support for the idle-state property from the mux
framework to the simple-mux audio variant. It allows to specify the state
of the mux when it is not in use.
Diffstat (limited to 'kernel/bpf/memalloc.c')
-rw-r--r-- | kernel/bpf/memalloc.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/kernel/bpf/memalloc.c b/kernel/bpf/memalloc.c index b3858a76e0b3..146f5b57cfb1 100644 --- a/kernel/bpf/memalloc.c +++ b/kernel/bpf/memalloc.c @@ -35,6 +35,8 @@ */ #define LLIST_NODE_SZ sizeof(struct llist_node) +#define BPF_MEM_ALLOC_SIZE_MAX 4096 + /* similar to kmalloc, but sizeof == 8 bucket is gone */ static u8 size_index[24] __ro_after_init = { 3, /* 8 */ @@ -65,7 +67,7 @@ static u8 size_index[24] __ro_after_init = { static int bpf_mem_cache_idx(size_t size) { - if (!size || size > 4096) + if (!size || size > BPF_MEM_ALLOC_SIZE_MAX) return -1; if (size <= 192) @@ -1005,3 +1007,13 @@ void notrace *bpf_mem_cache_alloc_flags(struct bpf_mem_alloc *ma, gfp_t flags) return !ret ? NULL : ret + LLIST_NODE_SZ; } + +int bpf_mem_alloc_check_size(bool percpu, size_t size) +{ + /* The size of percpu allocation doesn't have LLIST_NODE_SZ overhead */ + if ((percpu && size > BPF_MEM_ALLOC_SIZE_MAX) || + (!percpu && size > BPF_MEM_ALLOC_SIZE_MAX - LLIST_NODE_SZ)) + return -E2BIG; + + return 0; +} |