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| author | Daniel T. Lee <danieltimlee@gmail.com> | 2023-08-18 12:01:12 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-08-22 01:39:09 +0300 |
| commit | e7e6c774f5d40244444f23b8c49dac2ded158d8c (patch) | |
| tree | a6b348adf3883cbaaed55b2a273dd62b2eb416bf /samples/bpf/spintest_kern.c | |
| parent | 34f6e38f58db9a94718c273edc9ca3fc8b4dba5f (diff) | |
| download | linux-e7e6c774f5d40244444f23b8c49dac2ded158d8c.tar.xz | |
samples/bpf: convert to vmlinux.h with tracing programs
This commit replaces separate headers with a single vmlinux.h to
tracing programs. Thanks to that, we no longer need to define the
argument structure for tracing programs directly. For example, argument
for the sched_switch tracpepoint (sched_switch_args) can be replaced
with the vmlinux.h provided trace_event_raw_sched_switch.
Additional defines have been added to the BPF program either directly
or through the inclusion of net_shared.h. Defined values are
PERF_MAX_STACK_DEPTH, IFNAMSIZ constants and __stringify() macro. This
change enables the BPF program to access internal structures with BTF
generated "vmlinux.h" header.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Link: https://lore.kernel.org/r/20230818090119.477441-3-danieltimlee@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'samples/bpf/spintest_kern.c')
| -rw-r--r-- | samples/bpf/spintest_kern.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/samples/bpf/spintest_kern.c b/samples/bpf/spintest_kern.c index 455da77319d9..15740b16a3f7 100644 --- a/samples/bpf/spintest_kern.c +++ b/samples/bpf/spintest_kern.c @@ -4,14 +4,15 @@ * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. */ -#include <linux/skbuff.h> -#include <linux/netdevice.h> +#include "vmlinux.h" #include <linux/version.h> -#include <uapi/linux/bpf.h> -#include <uapi/linux/perf_event.h> #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> +#ifndef PERF_MAX_STACK_DEPTH +#define PERF_MAX_STACK_DEPTH 127 +#endif + struct { __uint(type, BPF_MAP_TYPE_HASH); __type(key, long); @@ -60,6 +61,7 @@ SEC("kprobe/_raw_spin_lock_irq")PROG(p11) SEC("kprobe/_raw_spin_trylock")PROG(p12) SEC("kprobe/_raw_spin_lock")PROG(p13) SEC("kprobe/_raw_spin_lock_bh")PROG(p14) + /* and to inner bpf helpers */ SEC("kprobe/htab_map_update_elem")PROG(p15) SEC("kprobe/__htab_percpu_map_update_elem")PROG(p16) |