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e565ceb48b
Introduce the `aggr_nr` function to the metric expression parser. `aggr_nr` allows metric formulas to dynamically utilize the number of aggregated targets (`aggr->nr`) instead of relying on the static `source_count` (which represents the static socket or node count). This adds the `AGGR_NR` token to the lexer and parser, updates the expression parsing context helpers to store `aggr_nr`, and feeds `aggr->nr` from the aggregation structure in `prepare_metric`. Assisted-by: Gemini:gemini-3.1-pro-preview Signed-off-by: Chun-Tse Shao <ctshao@google.com> Tested-by: Zide Chen <zide.chen@intel.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@linaro.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Thomas Falcon <thomas.falcon@intel.com> Cc: Yang Li <yang.lee@linux.alibaba.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>