tracing: tprobe-events: Register tracepoint when enable tprobe event

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As same as fprobe, register tracepoint stub function only when enabling
tprobe events. The major changes are introducing a list of
tracepoint_user and its lock, and tprobe_event_module_nb, which is
another module notifier for module loading/unloading.  By spliting the
lock from event_mutex and a module notifier for trace_fprobe, it
solved AB-BA lock dependency issue between event_mutex and
tracepoint_module_list_mutex.

Link: https://lore.kernel.org/all/174343538901.843280.423773753642677941.stgit@devnote2/

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>

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Masami Hiramatsu (Google) 2025-04-01 00:36:29 +09:00

parent 434f6703ce

commit 2867495dea

1 changed files with 217 additions and 165 deletions

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kernel/trace/trace_fprobe.c

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