Daniel Xu 6f3189f38a bpf: treewide: Annotate BPF kfuncs in BTF ... This commit marks kfuncs as such inside the .BTF_ids section. The upshot of these annotations is that we'll be able to automatically generate kfunc prototypes for downstream users. The process is as follows: 1. In source, use BTF_KFUNCS_START/END macro pair to mark kfuncs 2. During build, pahole injects into BTF a "bpf_kfunc" BTF_DECL_TAG for each function inside BTF_KFUNCS sets 3. At runtime, vmlinux or module BTF is made available in sysfs 4. At runtime, bpftool (or similar) can look at provided BTF and generate appropriate prototypes for functions with "bpf_kfunc" tag To ensure future kfunc are similarly tagged, we now also return error inside kfunc registration for untagged kfuncs. For vmlinux kfuncs, we also WARN(), as initcall machinery does not handle errors. Signed-off-by: Daniel Xu <dxu@dxuuu.xyz> Acked-by: Benjamin Tissoires <bentiss@kernel.org> Link: https://lore.kernel.org/r/e55150ceecbf0a5d961e608941165c0bee7bc943.1706491398.git.dxu@dxuuu.xyz Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2024-01-31 20:40:56 -08:00
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rv
blktrace.c
bpf_trace.c	bpf: treewide: Annotate BPF kfuncs in BTF	2024-01-31 20:40:56 -08:00
bpf_trace.h
error_report-traces.c
fgraph.c
fprobe.c	Probes updates for v6.7:	2023-11-01 16:15:42 -10:00
ftrace_internal.h
ftrace.c	ftrace: Fix modification of direct_function hash while in use	2023-12-30 10:07:27 -05:00
Kconfig
kprobe_event_gen_test.c
Makefile	tracing/probes: Move finding func-proto API and getting func-param API to trace_btf	2023-08-23 09:39:45 +09:00
pid_list.c
pid_list.h
power-traces.c
preemptirq_delay_test.c
rethook.c	rethook: Use __rcu pointer for rethook::handler	2023-12-01 14:53:56 +09:00
ring_buffer_benchmark.c	ring-buffer: Read and write to ring buffers with custom sub buffer size	2023-12-20 07:54:56 -05:00
ring_buffer.c	tracing updates for 6.8:	2024-01-18 14:35:29 -08:00
rpm-traces.c
synth_event_gen_test.c	tracing / synthetic: Disable events after testing in synth_event_gen_test_init()	2023-12-21 10:04:45 -05:00
trace_benchmark.c
trace_benchmark.h
trace_boot.c	tracing: Allow creating instances with specified system events	2023-12-18 23:14:16 -05:00
trace_branch.c
trace_btf.c	tracing/probes: Add a function to search a member of a struct/union	2023-08-23 09:40:16 +09:00
trace_btf.h	tracing/probes: Add a function to search a member of a struct/union	2023-08-23 09:40:16 +09:00
trace_clock.c
trace_dynevent.c
trace_dynevent.h
trace_entries.h	tracing: Add back FORTIFY_SOURCE logic to kernel_stack event structure	2023-07-30 18:11:44 -04:00
trace_eprobe.c	tracing/eprobe: drop unneeded breaks	2023-10-10 01:03:48 +09:00
trace_event_perf.c
trace_events_filter_test.h
trace_events_filter.c	tracing: Have trace_event_file have ref counters	2023-11-01 23:44:44 -04:00
trace_events_hist.c	tracing histograms: Simplify parse_actions() function	2024-01-08 13:24:56 -05:00
trace_events_inject.c	tracing: Have event inject files inc the trace array ref count	2023-09-07 16:38:54 -04:00
trace_events_synth.c	tracing/synthetic: fix kernel-doc warnings	2023-12-20 12:51:03 -05:00
trace_events_trigger.c	tracing: Fix kernel-doc warnings in trace_events_trigger.c	2023-07-28 19:59:03 -04:00
trace_events_user.c	iov_iter: replace import_single_range() with import_ubuf()	2023-12-05 11:57:37 +01:00
trace_events.c	ring-buffer: Page size per ring buffer	2023-12-20 07:54:55 -05:00
trace_export.c	tracing: Add back FORTIFY_SOURCE logic to kernel_stack event structure	2023-07-30 18:11:44 -04:00
trace_fprobe.c	tracing: fprobe-event: Fix to check tracepoint event and return	2023-11-10 20:06:12 +09:00
trace_functions_graph.c
trace_functions.c
trace_hwlat.c	tracing: Remove extra space at the end of hwlat_detector/mode	2023-09-01 21:00:00 -04:00
trace_irqsoff.c	tracing: Fix memleak due to race between current_tracer and trace	2023-08-17 13:49:37 -04:00
trace_kdb.c
trace_kprobe_selftest.c
trace_kprobe_selftest.h
trace_kprobe.c	trace/kprobe: Display the actual notrace function when rejecting a probe	2023-12-17 16:28:54 +09:00
trace_mmiotrace.c
trace_nop.c
trace_osnoise.c
trace_output.c	tracing: Add size check when printing trace_marker output	2023-12-12 22:07:22 -05:00
trace_output.h
trace_preemptirq.c
trace_printk.c
trace_probe_kernel.h
trace_probe_tmpl.h
trace_probe.c	tracing/probes: Add string type check with BTF	2023-08-23 09:41:13 +09:00
trace_probe.h	tracing/kprobes: Return EADDRNOTAVAIL when func matches several symbols	2023-10-20 22:10:41 +09:00
trace_recursion_record.c
trace_sched_switch.c
trace_sched_wakeup.c	tracing: Fix memleak due to race between current_tracer and trace	2023-08-17 13:49:37 -04:00
trace_selftest_dynamic.c
trace_selftest.c
trace_seq.c	trace_seq: Increase the buffer size to almost two pages	2023-12-18 23:14:16 -05:00
trace_stack.c
trace_stat.c
trace_stat.h
trace_synth.h
trace_syscalls.c	bpf: Change syscall_nr type to int in struct syscall_tp_t	2023-10-13 12:39:36 -07:00
trace_uprobe.c	tracing/uprobe: Replace strlcpy() with strscpy()	2023-12-01 10:25:35 -08:00
trace.c	tracing updates for 6.8:	2024-01-18 14:35:29 -08:00
trace.h	ring-buffer: Page size per ring buffer	2023-12-20 07:54:55 -05:00
tracing_map.c	tracing: Ensure visibility when inserting an element into tracing_map	2024-01-22 17:15:40 -05:00
tracing_map.h	tracing: Remove unused extern declaration tracing_map_set_field_descr()	2023-07-23 11:08:14 -04:00