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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events	sched/tracing: Append prev_state to tp args instead	2022-05-12 00:37:11 +02:00
stages	tracing: Rename the staging files for trace_events	2022-04-02 08:40:04 -04:00
bpf_probe.h	tracing: Introduce helpers to safely handle dynamic-sized sockaddrs	2022-02-28 10:26:38 -05:00
define_custom_trace.h	tracing: Add TRACE_CUSTOM_EVENT() macro	2022-03-11 11:49:24 -05:00
define_trace.h	tracepoint: Optimize using static_call()	2020-09-01 09:58:06 +02:00
perf.h	tracing: Introduce helpers to safely handle dynamic-sized sockaddrs	2022-02-28 10:26:38 -05:00
syscall.h	tracepoints: Migrate to use SYSCALL_WORK flag	2020-11-16 21:53:15 +01:00
trace_custom_events.h	tracing: Rename the staging files for trace_events	2022-04-02 08:40:04 -04:00
trace_events.h	tracing: Rename the staging files for trace_events	2022-04-02 08:40:04 -04:00