twx-linux/kernel/trace
Daniel Xu cce4c40b96 bpf: treewide: Align kfunc signatures to prog point-of-view
Previously, kfunc declarations in bpf_kfuncs.h (and others) used "user
facing" types for kfuncs prototypes while the actual kfunc definitions
used "kernel facing" types. More specifically: bpf_dynptr vs
bpf_dynptr_kern, __sk_buff vs sk_buff, and xdp_md vs xdp_buff.

It wasn't an issue before, as the verifier allows aliased types.
However, since we are now generating kfunc prototypes in vmlinux.h (in
addition to keeping bpf_kfuncs.h around), this conflict creates
compilation errors.

Fix this conflict by using "user facing" types in kfunc definitions.
This results in more casts, but otherwise has no additional runtime
cost.

Note, similar to 5b268d1ebcdc ("bpf: Have bpf_rdonly_cast() take a const
pointer"), we also make kfuncs take const arguments where appropriate in
order to make the kfunc more permissive.

Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
Link: https://lore.kernel.org/r/b58346a63a0e66bc9b7504da751b526b0b189a67.1718207789.git.dxu@dxuuu.xyz
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-06-12 11:01:31 -07:00
..
rv rv: Update rv_en(dis)able_monitor doc to match kernel-doc 2024-05-21 19:03:35 -04:00
blktrace.c blktrace: convert strncpy() to strscpy_pad() 2024-04-25 21:07:08 -07:00
bpf_trace.c bpf: treewide: Align kfunc signatures to prog point-of-view 2024-06-12 11:01:31 -07:00
bpf_trace.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
error_report-traces.c
fgraph.c ftrace: Remove unused global 'ftrace_direct_func_count' 2024-05-14 02:09:40 -04:00
fprobe.c fprobe: Fix to allocate entry_data_size buffer with rethook instances 2024-03-01 09:18:24 +09:00
ftrace_internal.h
ftrace.c tracing cleanups for v6.10: 2024-05-17 18:34:27 -07:00
Kconfig Probes updates for v6.10: 2024-05-17 18:29:30 -07:00
kprobe_event_gen_test.c
Makefile
pid_list.c
pid_list.h
power-traces.c
preemptirq_delay_test.c tracing: Add MODULE_DESCRIPTION() to preemptirq_delay_test 2024-05-21 19:03:35 -04:00
rethook.c rethook: honor CONFIG_FTRACE_VALIDATE_RCU_IS_WATCHING in rethook_try_get() 2024-05-01 23:18:48 +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 ring-buffer: Fix a race between readers and resize checks 2024-05-21 19:03:35 -04:00
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 tracing: Improve benchmark test performance by using do_div() 2024-05-13 20:00:57 -04:00
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: Fix to search structure fields correctly 2024-02-17 21:25:42 +09:00
trace_btf.h
trace_clock.c
trace_dynevent.c
trace_dynevent.h
trace_entries.h
trace_eprobe.c tracing/probes: Support $argN in return probe (kprobe and fprobe) 2024-03-07 00:27:34 +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
trace_events_synth.c tracing/synthetic: Fix trace_string() return value 2024-02-15 11:40:01 -05:00
trace_events_trigger.c tracing: Decrement the snapshot if the snapshot trigger fails to register 2024-03-18 10:33:05 -04:00
trace_events_user.c user-event updates for v6.10: 2024-05-17 18:46:30 -07:00
trace_events.c eventfs/tracing: Add callback for release of an eventfs_inode 2024-05-04 04:25:37 -04:00
trace_export.c
trace_fprobe.c tracing/probes: support '%pd' type for print struct dentry's name 2024-05-01 23:18:47 +09:00
trace_functions_graph.c
trace_functions.c
trace_hwlat.c
trace_irqsoff.c
trace_kdb.c
trace_kprobe_selftest.c
trace_kprobe_selftest.h
trace_kprobe.c Probes updates for v6.10: 2024-05-17 18:29:30 -07:00
trace_mmiotrace.c
trace_nop.c
trace_osnoise.c tracing/timerlat: Move hrtimer_init to timerlat_fd open() 2024-02-01 11:50:13 -05:00
trace_output.c tracing: Remove precision vsnprintf() check from print event 2024-03-06 13:26:26 -05:00
trace_output.h
trace_preemptirq.c
trace_printk.c
trace_probe_kernel.h
trace_probe_tmpl.h tracing/probes: Support $argN in return probe (kprobe and fprobe) 2024-03-07 00:27:34 +09:00
trace_probe.c tracing/probes: fix error check in parse_btf_field() 2024-05-27 21:32:35 +09:00
trace_probe.h tracing/probes: support '%pd' type for print struct dentry's name 2024-05-01 23:18:47 +09:00
trace_recursion_record.c
trace_sched_switch.c tracing: Move saved_cmdline code into trace_sched_switch.c 2024-03-17 07:58:53 -04:00
trace_sched_wakeup.c
trace_selftest_dynamic.c
trace_selftest.c tracing: Support to dump instance traces by ftrace_dump_on_oops 2024-03-18 10:33:06 -04:00
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
trace_uprobe.c uprobes: prevent mutex_lock() under rcu_read_lock() 2024-05-24 07:44:44 +09:00
trace.c tracing ring buffer updates for v6.10: 2024-05-17 18:40:37 -07:00
trace.h tracing: Allow user-space mapping of the ring-buffer 2024-05-13 18:09:56 -04:00
tracing_map.c tracing: Ensure visibility when inserting an element into tracing_map 2024-01-22 17:15:40 -05:00
tracing_map.h