diff options
| author | Song Liu <songliubraving@fb.com> | 2022-02-04 19:57:35 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-02-08 03:13:01 +0100 |
| commit | 3486bedd99196ecdfe99c0ab5b67ad3c47e8a8fa (patch) | |
| tree | 14f258f23c25f941a2f33f9ff0b09587aa8e8028 /kernel/bpf/trampoline.c | |
| parent | x86/Kconfig: Select HAVE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HUGE_VMAP (diff) | |
| download | linux-3486bedd99196ecdfe99c0ab5b67ad3c47e8a8fa.tar.xz linux-3486bedd99196ecdfe99c0ab5b67ad3c47e8a8fa.zip | |
bpf: Use bytes instead of pages for bpf_jit_[charge|uncharge]_modmem
This enables sub-page memory charge and allocation.
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220204185742.271030-3-song@kernel.org
Diffstat (limited to 'kernel/bpf/trampoline.c')
| -rw-r--r-- | kernel/bpf/trampoline.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/bpf/trampoline.c b/kernel/bpf/trampoline.c index 4b6974a195c1..e76a488c09c3 100644 --- a/kernel/bpf/trampoline.c +++ b/kernel/bpf/trampoline.c @@ -213,7 +213,7 @@ static void __bpf_tramp_image_put_deferred(struct work_struct *work) im = container_of(work, struct bpf_tramp_image, work); bpf_image_ksym_del(&im->ksym); bpf_jit_free_exec(im->image); - bpf_jit_uncharge_modmem(1); + bpf_jit_uncharge_modmem(PAGE_SIZE); percpu_ref_exit(&im->pcref); kfree_rcu(im, rcu); } @@ -310,7 +310,7 @@ static struct bpf_tramp_image *bpf_tramp_image_alloc(u64 key, u32 idx) if (!im) goto out; - err = bpf_jit_charge_modmem(1); + err = bpf_jit_charge_modmem(PAGE_SIZE); if (err) goto out_free_im; @@ -332,7 +332,7 @@ static struct bpf_tramp_image *bpf_tramp_image_alloc(u64 key, u32 idx) out_free_image: bpf_jit_free_exec(im->image); out_uncharge: - bpf_jit_uncharge_modmem(1); + bpf_jit_uncharge_modmem(PAGE_SIZE); out_free_im: kfree(im); out: |