perf trace: Tidy comments related to BPF + syscall augmentation

Now tools/perf/examples/bpf/augmented_syscalls.c is
tools/perf/util/bpf_skel/augmented_syscalls.bpf.c and not enabled as a
BPF event, tidy the comments to reflect this.

Signed-off-by: Ian Rogers <[e-mail]>
Acked-by: Jiri Olsa <[e-mail]>
Cc: Adrian Hunter <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Andi Kleen <[e-mail]>
Cc: Andrii Nakryiko <[e-mail]>
Cc: Anshuman Khandual <[e-mail]>
Cc: Athira Rajeev <[e-mail]>
Cc: Brendan Gregg <[e-mail]>
Cc: Carsten Haitzler <[e-mail]>
Cc: Eduard Zingerman <[e-mail]>
Cc: Fangrui Song <[e-mail]>
Cc: He Kuang <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: James Clark <[e-mail]>
Cc: Kan Liang <[e-mail]>
Cc: Leo Yan <[e-mail]>
Cc: Madhavan Srinivasan <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Nathan Chancellor <[e-mail]>
Cc: Naveen N. Rao <[e-mail]>
Cc: Nick Desaulniers <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Ravi Bangoria <[e-mail]>
Cc: Rob Herring <[e-mail]>
Cc: Tiezhu Yang <[e-mail]>
Cc: Tom Rix <[e-mail]>
Cc: Wang Nan <[e-mail]>
Cc: Wang ShaoBo <[e-mail]>
Cc: Yang Jihong <[e-mail]>
Cc: Yonghong Song <[e-mail]>
Cc: YueHaibing <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/trace/beauty/beauty.h

···
 /**
  * augmented_arg: extra payload for syscall pointer arguments
  
- * If perf_sample->raw_size is more than what a syscall sys_enter_FOO puts,
- * then its the arguments contents, so that we can show more than just a
+ * If perf_sample->raw_size is more than what a syscall sys_enter_FOO puts, then
+ * its the arguments contents, so that we can show more than just a
  * pointer. This will be done initially with eBPF, the start of that is at the
- * tools/perf/examples/bpf/augmented_syscalls.c example for the openat, but
- * will eventually be done automagically caching the running kernel tracefs
- * events data into an eBPF C script, that then gets compiled and its .o file
- * cached for subsequent use. For char pointers like the ones for 'open' like
- * syscalls its easy, for the rest we should use DWARF or better, BTF, much
- * more compact.
+ * tools/perf/util/bpf_skel/augmented_syscalls.bpf.c that will eventually be
+ * done automagically caching the running kernel tracefs events data into an
+ * eBPF C script, that then gets compiled and its .o file cached for subsequent
+ * use. For char pointers like the ones for 'open' like syscalls its easy, for
+ * the rest we should use DWARF or better, BTF, much more compact.
  *
  * @size: 8 if all we need is an integer, otherwise all of the augmented arg.
  * @int_arg: will be used for integer like pointer contents, like 'accept's 'upeer_addrlen'

tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c

···
 /*
  * Augment the raw_syscalls tracepoints with the contents of the pointer arguments.
  *
- * Test it with:
- *
- * perf trace -e tools/perf/examples/bpf/augmented_raw_syscalls.c cat /etc/passwd > /dev/null
- *
  * This exactly matches what is marshalled into the raw_syscall:sys_enter
  * payload expected by the 'perf trace' beautifiers.
- *
- * For now it just uses the existing tracepoint augmentation code in 'perf
- * trace', in the next csets we'll hook up these with the sys_enter/sys_exit
- * code that will combine entry/exit in a strace like way.
  */
 
 #include <linux/bpf.h>