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d6212d82bf
The selftests build four kernel modules which use copy-pasted Makefile targets. This is a bit messy, and doesn't scale so well when we add more modules, so let's consolidate these rules into a single rule generated for each module name, and move the module sources into a single directory. To avoid parallel builds of the different modules stepping on each other's toes during the 'modpost' phase of the Kbuild 'make modules', the module files should really be a grouped target. However, make only added explicit support for grouped targets in version 4.3, which is newer than the minimum version supported by the kernel. However, make implicitly treats pattern matching rules with multiple targets as a grouped target, so we can work around this by turning the rule into a pattern matching target. We do this by replacing '.ko' with '%ko' in the targets with subst(). Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Viktor Malik <vmalik@redhat.com> Link: https://lore.kernel.org/bpf/20241204-bpf-selftests-mod-compile-v5-1-b96231134a49@redhat.com
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2020 Facebook */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM bpf_testmod
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#if !defined(_BPF_TESTMOD_EVENTS_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _BPF_TESTMOD_EVENTS_H
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#include <linux/tracepoint.h>
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#include "bpf_testmod.h"
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TRACE_EVENT(bpf_testmod_test_read,
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TP_PROTO(struct task_struct *task, struct bpf_testmod_test_read_ctx *ctx),
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TP_ARGS(task, ctx),
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TP_STRUCT__entry(
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__field(pid_t, pid)
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__array(char, comm, TASK_COMM_LEN)
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__field(loff_t, off)
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__field(size_t, len)
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),
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TP_fast_assign(
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__entry->pid = task->pid;
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memcpy(__entry->comm, task->comm, TASK_COMM_LEN);
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__entry->off = ctx->off;
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__entry->len = ctx->len;
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),
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TP_printk("pid=%d comm=%s off=%llu len=%zu",
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__entry->pid, __entry->comm, __entry->off, __entry->len)
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);
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/* A bare tracepoint with no event associated with it */
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DECLARE_TRACE(bpf_testmod_test_write_bare,
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TP_PROTO(struct task_struct *task, struct bpf_testmod_test_write_ctx *ctx),
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TP_ARGS(task, ctx)
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);
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/* Used in bpf_testmod_test_read() to test __nullable suffix */
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DECLARE_TRACE(bpf_testmod_test_nullable_bare,
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TP_PROTO(struct bpf_testmod_test_read_ctx *ctx__nullable),
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TP_ARGS(ctx__nullable)
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);
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struct sk_buff;
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DECLARE_TRACE(bpf_testmod_test_raw_tp_null,
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TP_PROTO(struct sk_buff *skb),
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TP_ARGS(skb)
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);
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#undef BPF_TESTMOD_DECLARE_TRACE
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#ifdef DECLARE_TRACE_WRITABLE
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#define BPF_TESTMOD_DECLARE_TRACE(call, proto, args, size) \
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DECLARE_TRACE_WRITABLE(call, PARAMS(proto), PARAMS(args), size)
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#else
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#define BPF_TESTMOD_DECLARE_TRACE(call, proto, args, size) \
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DECLARE_TRACE(call, PARAMS(proto), PARAMS(args))
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#endif
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BPF_TESTMOD_DECLARE_TRACE(bpf_testmod_test_writable_bare,
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TP_PROTO(struct bpf_testmod_test_writable_ctx *ctx),
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TP_ARGS(ctx),
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sizeof(struct bpf_testmod_test_writable_ctx)
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);
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#endif /* _BPF_TESTMOD_EVENTS_H */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#define TRACE_INCLUDE_FILE bpf_testmod-events
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#include <trace/define_trace.h>
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