diff options
author | Ingo Molnar <mingo@kernel.org> | 2023-07-19 09:43:25 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2023-07-19 09:43:25 +0200 |
commit | 752182b24bf4ffda1c5a8025515d53122d930bd8 (patch) | |
tree | 836031bb239fa1f2288e7ad089b030abea6a4838 /tools/testing/selftests/bpf/progs/async_stack_depth.c | |
parent | 48b5583719cdfbdee238f9549a6a1a47af2b0469 (diff) | |
parent | fdf0eaf11452d72945af31804e2a1048ee1b574c (diff) |
Merge tag 'v6.5-rc2' into sched/core, to pick up fixes
Sync with upstream fixes before applying EEVDF.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/async_stack_depth.c')
-rw-r--r-- | tools/testing/selftests/bpf/progs/async_stack_depth.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/async_stack_depth.c b/tools/testing/selftests/bpf/progs/async_stack_depth.c new file mode 100644 index 000000000000..477ba950bb43 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/async_stack_depth.c @@ -0,0 +1,40 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <vmlinux.h> +#include <bpf/bpf_helpers.h> + +#include "bpf_misc.h" + +struct hmap_elem { + struct bpf_timer timer; +}; + +struct { + __uint(type, BPF_MAP_TYPE_HASH); + __uint(max_entries, 64); + __type(key, int); + __type(value, struct hmap_elem); +} hmap SEC(".maps"); + +__attribute__((noinline)) +static int timer_cb(void *map, int *key, struct bpf_timer *timer) +{ + volatile char buf[256] = {}; + return buf[69]; +} + +SEC("tc") +__failure __msg("combined stack size of 2 calls") +int prog(struct __sk_buff *ctx) +{ + struct hmap_elem *elem; + volatile char buf[256] = {}; + + elem = bpf_map_lookup_elem(&hmap, &(int){0}); + if (!elem) + return 0; + + timer_cb(NULL, NULL, NULL); + return bpf_timer_set_callback(&elem->timer, timer_cb) + buf[0]; +} + +char _license[] SEC("license") = "GPL"; |