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424f6a3610
Using single ftrace_ops for direct calls update instead of allocating ftrace_ops object for each trampoline. With single ftrace_ops object we can use update_ftrace_direct_* api that allows multiple ip sites updates on single ftrace_ops object. Adding HAVE_SINGLE_FTRACE_DIRECT_OPS config option to be enabled on each arch that supports this. At the moment we can enable this only on x86 arch, because arm relies on ftrace_ops object representing just single trampoline image (stored in ftrace_ops::direct_call). Archs that do not support this will continue to use *_ftrace_direct api. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Link: https://lore.kernel.org/bpf/20251230145010.103439-10-jolsa@kernel.org