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Force loading all PMUs adds significant cost because DRM and other PMUs are loaded, it should also not be required if the pmus__ functions are used. Tested by run perf test, in particular the pfm related tests. Also `perf list` is identical before and after. Before: $ time ./perf test pfm 54: Test libpfm4 support : 54.1: test of individual --pfm-events : Ok 54.2: test groups of --pfm-events : Ok 103: perf all libpfm4 events test : Ok real 0m8.933s user 0m1.824s sys 0m7.122s After: $ time ./perf test pfm 54: Test libpfm4 support : 54.1: test of individual --pfm-events : Ok 54.2: test groups of --pfm-events : Ok 103: perf all libpfm4 events test : Ok real 0m5.259s user 0m1.793s sys 0m3.570s Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20250722013449.146233-1-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>