Delyan Kratunov 9c2136be08 sched/tracing: Append prev_state to tp args instead ... Commit fa2c3254d7 (sched/tracing: Don't re-read p->state when emitting sched_switch event, 2022-01-20) added a new prev_state argument to the sched_switch tracepoint, before the prev task_struct pointer. This reordering of arguments broke BPF programs that use the raw tracepoint (e.g. tp_btf programs). The type of the second argument has changed and existing programs that assume a task_struct* argument (e.g. for bpf_task_storage access) will now fail to verify. If we instead append the new argument to the end, all existing programs would continue to work and can conditionally extract the prev_state argument on supported kernel versions. Fixes: fa2c3254d7 (sched/tracing: Don't re-read p->state when emitting sched_switch event, 2022-01-20) Signed-off-by: Delyan Kratunov <delyank@fb.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org> Link: https://lkml.kernel.org/r/c8a6930dfdd58a4a5755fc01732675472979732b.camel@fb.com		2022-05-12 00:37:11 +02:00
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blktrace.c	SCSI misc on 20220324	2022-03-24 19:37:53 -07:00
bpf_trace.c	bpf: Fix sparse warnings in kprobe_multi_resolve_syms	2022-03-30 14:10:06 +02:00
bpf_trace.h
error_report-traces.c
fgraph.c	sched/tracing: Append prev_state to tp args instead	2022-05-12 00:37:11 +02:00
fprobe.c	fprobe: Fix sparse warning for acccessing __rcu ftrace_hash	2022-03-28 19:05:40 -07:00
ftrace.c	sched/tracing: Append prev_state to tp args instead	2022-05-12 00:37:11 +02:00
ftrace_internal.h
Kconfig	tracing: mark user_events as BROKEN	2022-04-02 10:32:14 -07:00
kprobe_event_gen_test.c
Makefile
pid_list.c
pid_list.h
power-traces.c
preemptirq_delay_test.c
rethook.c	rethook: Fix to use WRITE_ONCE() for rethook:: Handler	2022-03-30 19:28:17 -07:00
ring_buffer.c
ring_buffer_benchmark.c
rpm-traces.c
synth_event_gen_test.c
trace.c	Trace event fix of string verifier	2022-03-26 14:54:41 -07:00
trace.h
trace_benchmark.c
trace_benchmark.h
trace_boot.c
trace_branch.c
trace_clock.c
trace_dynevent.c
trace_dynevent.h
trace_entries.h
trace_eprobe.c
trace_event_perf.c
trace_events.c	sched/tracing: Append prev_state to tp args instead	2022-05-12 00:37:11 +02:00
trace_events_filter.c
trace_events_filter_test.h
trace_events_hist.c
trace_events_inject.c
trace_events_synth.c
trace_events_trigger.c
trace_events_user.c	tracing: mark user_events as BROKEN	2022-04-02 10:32:14 -07:00
trace_export.c
trace_functions.c
trace_functions_graph.c
trace_hwlat.c
trace_irqsoff.c
trace_kdb.c
trace_kprobe.c	kprobes: Use rethook for kretprobe if possible	2022-03-28 19:38:09 -07:00
trace_kprobe_selftest.c
trace_kprobe_selftest.h
trace_mmiotrace.c
trace_nop.c
trace_osnoise.c	sched/tracing: Append prev_state to tp args instead	2022-05-12 00:37:11 +02:00
trace_output.c
trace_output.h
trace_preemptirq.c
trace_printk.c
trace_probe.c
trace_probe.h
trace_probe_tmpl.h
trace_recursion_record.c
trace_sched_switch.c	sched/tracing: Append prev_state to tp args instead	2022-05-12 00:37:11 +02:00
trace_sched_wakeup.c	sched/tracing: Append prev_state to tp args instead	2022-05-12 00:37:11 +02:00
trace_selftest.c
trace_selftest_dynamic.c
trace_seq.c
trace_stack.c
trace_stat.c
trace_stat.h
trace_synth.h
trace_syscalls.c
trace_uprobe.c
tracing_map.c
tracing_map.h