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-rw-r--r--llvm/docs/CommandGuide/llvm-exegesis.rst8
1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/docs/CommandGuide/llvm-exegesis.rst b/llvm/docs/CommandGuide/llvm-exegesis.rst
index c268153..8266d89 100644
--- a/llvm/docs/CommandGuide/llvm-exegesis.rst
+++ b/llvm/docs/CommandGuide/llvm-exegesis.rst
@@ -473,6 +473,14 @@ OPTIONS
flag can be specified multiple times to measure multiple events. The maximum
number of validation counters is platform dependent.
+.. option:: --benchmark-process-cpu=<cpu id>
+
+ This option specifies the number of the CPU that should be used to run the
+ benchmarking subprocess. When starting the subprocess,
+ :program:`llvm-exegesis` will set the affinity of the subprocess to only
+ include the specified CPU. This option only works in the subprocess execution
+ mode.
+
EXIT STATUS
-----------