Claude review: perf/core: out-of-line and export perf_allow_cpu/tracepoint()

[Claude Code Review Bot <claude-review@example.com>]

Patch Review

**Correctness: Good.** The moved function bodies are exact copies of the original static inlines:

```c
int perf_allow_cpu(void)
{
	if (sysctl_perf_event_paranoid > 0 && !perfmon_capable())
		return -EACCES;

	return security_perf_event_open(PERF_SECURITY_CPU);
}
EXPORT_SYMBOL_GPL(perf_allow_cpu);
```

This matches the original inline in the header byte-for-byte (minus `static inline`). Same for `perf_allow_tracepoint()`.

**Placement:** The new functions are placed in `kernel/events/core.c` immediately after `perf_allow_kernel()` at line 14731, which is the right location. `EXPORT_SYMBOL_GPL` is the correct export type, matching `perf_allow_kernel()`.

**Header update:** The declarations change from `static inline` with bodies to `extern int` declarations, placed alongside the existing `extern int perf_allow_kernel(void)`. Clean.

**No issues found.** This patch is a mechanical, safe transformation. Existing built-in callers see no functional difference (the function call overhead for these permission checks is negligible). The commit message correctly references the precedent commit 5e9629d0ae97.

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Generated by Claude Code Patch Reviewer