Sven Schnelle 533c20b062 ftrace: Add print_function_args() ... Add a function to decode argument types with the help of BTF. Will be used to display arguments in the function and function graph tracer. It can only handle simply arguments and up to FTRACE_REGS_MAX_ARGS number of arguments. When it hits a max, it will print ", ...": page_to_skb(vi=0xffff8d53842dc980, rq=0xffff8d53843a0800, page=0xfffffc2e04337c00, offset=6160, len=64, truesize=1536, ...) And if it hits an argument that is not recognized, it will print the raw value and the type of argument it is: make_vfsuid(idmap=0xffffffff87f99db8, fs_userns=0xffffffff87e543c0, kuid=0x0 (STRUCT)) __pti_set_user_pgtbl(pgdp=0xffff8d5384ab47f8, pgd=0x110e74067 (STRUCT)) Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Guo Ren <guoren@kernel.org> Cc: Donglin Peng <dolinux.peng@gmail.com> Cc: Zheng Yejian <zhengyejian@huaweicloud.com> Link: https://lore.kernel.org/20250227185822.639418500@goodmis.org Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Co-developed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>		2025-03-04 11:27:23 -05:00
..
rv	verification/dot2k: Auto patch current kernel source	2024-12-27 14:39:35 -05:00
blktrace.c	blktrace: remove redundant return at end of function	2024-12-23 08:17:23 -07:00
bpf_trace.c	bpf-next-6.14	2025-01-23 08:04:07 -08:00
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	fgraph: Correct typo in ftrace_return_to_handler comment	2025-03-04 11:15:50 -05:00
fprobe.c	fprobe: Fix accounting of when to unregister from function graph	2025-02-21 09:36:12 -05:00
ftrace_internal.h	function_graph: Make fgraph_update_pid_func() a stub for !DYNAMIC_FTRACE	2024-06-10 18:08:23 -04:00
ftrace.c	ftrace: Have ftrace_free_filter() WARN and exit if ops is active	2025-03-04 11:26:48 -05:00
Kconfig	ftrace: Add print_function_args()	2025-03-04 11:27:23 -05:00
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: allow pid_max to be set per pid namespace	2024-12-02 11:25:25 +01:00
pid_list.h
power-traces.c
preemptirq_delay_test.c	minmax: make generic MIN() and MAX() macros available everywhere	2024-07-28 15:49:18 -07:00
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: Use str_low_high() helper in ring_buffer_producer()	2024-10-19 11:12:25 -04:00
ring_buffer.c	ring-buffer: Update pages_touched to reflect persistent buffer content	2025-02-15 14:00:59 -05:00
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	tracing: Remove TRACE_EVENT_FL_FILTERED logic	2024-10-08 15:24:49 -04:00
trace_btf.c	tracing/probes: Fix to search structure fields correctly	2024-02-17 21:25:42 +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	tracing: Use atomic64_inc_return() in trace_clock_counter()	2024-10-09 19:59:49 -04:00
trace_dynevent.c	tracing/string: Create and use __free(argv_free) in trace_dynevent.c	2024-12-26 10:38:37 -05:00
trace_dynevent.h
trace_entries.h	fgraph: Remove calltime and rettime from generic operations	2025-01-21 21:55:49 -05:00
trace_eprobe.c	tracing/eprobe: Adopt guard() and scoped_guard()	2025-01-10 09:00:12 +09:00
trace_event_perf.c	trace/trace_event_perf: remove duplicate samples on the first tracepoint event	2024-10-09 19:44:54 -04:00
trace_events_filter_test.h
trace_events_filter.c	tracing: Switch trace_events_filter.c code over to use guard()	2024-12-26 10:38:37 -05:00
trace_events_hist.c	tracing/hist: Support POLLPRI event for poll on histogram	2025-01-07 11:46:32 -05:00
trace_events_inject.c	tracing: Have format file honor EVENT_FILE_FL_FREED	2024-08-07 18:12:46 -04:00
trace_events_synth.c	tracing: Switch trace_events_synth.c code over to use guard()	2024-12-26 10:38:37 -05:00
trace_events_trigger.c	tracing: Switch trace_events_trigger.c code over to use guard()	2024-12-26 10:38:37 -05:00
trace_events_user.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
trace_events.c	tracing: Fix memory leak when reading set_event file	2025-02-21 09:36:12 -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: Adopt __free() and guard() for trace_fprobe.c	2025-01-16 21:27:07 -05:00
trace_functions_graph.c	fgraph: Fix set_graph_notrace with setting TRACE_GRAPH_NOTRACE_BIT	2025-02-08 08:36:45 -05:00
trace_functions.c	ftrace: Correct preemption accounting for function tracing.	2025-02-21 09:36:12 -05:00
trace_hwlat.c	tracing: Remove TRACE_EVENT_FL_FILTERED logic	2024-10-08 15:24:49 -04:00
trace_irqsoff.c	fgraph: Remove calltime and rettime from generic operations	2025-01-21 21:55:49 -05:00
trace_kdb.c	trace: kdb: Replace simple_strtoul with kstrtoul in kdb_ftdump	2024-11-02 08:33:13 +00:00
trace_kprobe_selftest.c	tracing: arm64: Avoid missing-prototype warnings	2023-07-12 12:06:04 -04:00
trace_kprobe_selftest.h
trace_kprobe.c	tracing/kprobes: Simplify __trace_kprobe_create() by removing gotos	2025-01-10 09:01:14 +09:00
trace_mmiotrace.c	tracing: Remove TRACE_EVENT_FL_FILTERED logic	2024-10-08 15:24:49 -04:00
trace_nop.c
trace_osnoise.c	Runtime verifier and osnoise fixes for 6.14:	2025-01-26 14:19:45 -08:00
trace_output.c	ftrace: Add print_function_args()	2025-03-04 11:27:23 -05:00
trace_output.h	ftrace: Add print_function_args()	2025-03-04 11:27:23 -05:00
trace_preemptirq.c	tracing: Fix archs that still call tracepoints without RCU watching	2024-12-05 09:28:58 -05:00
trace_printk.c
trace_probe_kernel.h	tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails	2023-07-14 17:04:58 +09:00
trace_probe_tmpl.h	tracing/fprobe: Enable fprobe events with CONFIG_DYNAMIC_FTRACE_WITH_ARGS	2024-12-26 10:50:04 -05:00
trace_probe.c	tracing: Use __free() in trace_probe for cleanup	2025-01-10 09:00:13 +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	pid: allow pid_max to be set per pid namespace	2024-12-02 11:25:25 +01:00
trace_sched_wakeup.c	fgraph: Remove calltime and rettime from generic operations	2025-01-21 21:55:49 -05:00
trace_selftest_dynamic.c
trace_selftest.c	fgraph: Pass ftrace_regs to retfunc	2024-12-26 10:50:03 -05:00
trace_seq.c	trace_seq: Increase the buffer size to almost two pages	2023-12-18 23:14:16 -05:00
trace_stack.c	tracing: Switch trace_stack.c code over to use guard()	2024-12-26 10:38:37 -05:00
trace_stat.c	tracing: Switch trace_stat.c code over to use guard()	2024-12-26 10:38:37 -05:00
trace_stat.h
trace_synth.h
trace_syscalls.c	tracing/perf: Add might_fault check to syscall probes	2024-10-09 17:09:46 -04:00
trace_uprobe.c	tracing/uprobe: Adopt guard() and scoped_guard()	2025-01-10 09:00:12 +09:00
trace.c	tracing: Do not allow mmap() of persistent ring buffer	2025-02-15 13:59:52 -05:00
trace.h	Remove calltime and rettime from fgraph infrastructure	2025-01-23 17:59:25 -08:00
tracing_map.c	tracing: Fix cmp_entries_dup() to respect sort() comparison rules	2024-12-04 10:38:24 -05:00
tracing_map.h	tracing: Remove unused extern declaration tracing_map_set_field_descr()	2023-07-23 11:08:14 -04:00