[roll] Roll fuchsia [starnix] Add test to retrieve mmap() perf_event_mmap_page metadata page This test sets up perf_event_open for sampling, and then calls mmap() to save some data into memory. It then checks whether some of the metadata params are being populated. The params are mostly hardcoded for now so that we can get an E2E example working. Changes the import to use starnix_uapi instead of linux_uapi. Changes an EINVAL to ENOSYS because they are meant to be implemented, and aren't invalid. Also realized that perf_event_open() is meant to return an int (int32), not a long, so updated that. Caught this when having trouble passing it into mmap(). Testing: ``` fx test -o fuchsia-pkg://fuchsia.com/starnix_syscalls_cpp_tests#meta/perf_event_open_test.cm sudo ~/fuchsia/out/default/linux_x64/perf_event_open_test_bin ``` Original-Bug: 398914921 Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1270474 Original-Revision: c6f28ecce1b06d9f79623dbf909b54e10d0279ef GitOrigin-RevId: 39bd3c2cdb161edcdbe5caf58f6fe6f1e7864970 Change-Id: I3d2a9f28861794c48dd0bf424187a3aba413f1a1
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