forked from Minki/linux
samples/bpf: stress test bpf_get_stackid
increase stress by also calling bpf_get_stackid() from various *spin* functions Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -8,6 +8,7 @@
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#include <linux/netdevice.h>
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#include <linux/version.h>
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#include <uapi/linux/bpf.h>
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#include <uapi/linux/perf_event.h>
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#include "bpf_helpers.h"
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struct bpf_map_def SEC("maps") my_map = {
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@ -23,6 +24,13 @@ struct bpf_map_def SEC("maps") my_map2 = {
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.max_entries = 1024,
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};
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struct bpf_map_def SEC("maps") stackmap = {
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.type = BPF_MAP_TYPE_STACK_TRACE,
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.key_size = sizeof(u32),
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.value_size = PERF_MAX_STACK_DEPTH * sizeof(u64),
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.max_entries = 10000,
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};
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#define PROG(foo) \
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int foo(struct pt_regs *ctx) \
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{ \
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@ -32,6 +40,7 @@ int foo(struct pt_regs *ctx) \
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bpf_map_update_elem(&my_map, &v, &v, BPF_ANY); \
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bpf_map_update_elem(&my_map2, &v, &v, BPF_ANY); \
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bpf_map_delete_elem(&my_map2, &v); \
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bpf_get_stackid(ctx, &stackmap, BPF_F_REUSE_STACKID); \
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return 0; \
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}
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