benchmark/driver.rb: fully obsolete this

in favor of just using benchmark_driver.gem.

common.mk: The new `make benchmark` covers the both usages for old `make
benchmark` and old `make benchmark-each`. So `make benchmark-each` is
dropped now.

benchmark/README.md: Explain its details

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63918 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 12 deletions

diff --git a/benchmark/README.md b/benchmark/README.md
index 1b0b373f7a..a5ebaf21df 100644
--- a/benchmark/README.md
+++ b/benchmark/README.md
@@ -31,19 +31,16 @@ make benchmark
 # Or compare with specific ruby binary
 make benchmark COMPARE_RUBY="/path/to/ruby --jit"
 
-# You can specify any option via $OPTS
-make benchmark OPTS="--help"
-```
+# Run vm1 benchmarks
+make benchmark ITEM=vm1
 
-## make benchmark-each
+# Run some limited benchmarks in ITEM-matched files
+make benchmark ITEM=vm1 OPTS=--filter=block
 
-`make benchmark-each` is similar to `make benchmark`, but it allows to execute
-some specific benchmarks.
+# You can specify the benchmark by an exact filename instead of using
+# the default argument: ARGS=$(srcdir)/benchmark/*$(ITEM)*.yml
+make benchmark ARGS=../benchmark/erb_render.yml
 
-```bash
-# Run vm1 benchmarks
-make benchmark-each ITEM=vm1
-
-# Match erb but exclude app_erb to run only erb_render
-make benchmark-each ITEM=erb OPTS="--exclude=app_erb"
+# You can specify any option via $OPTS
+make benchmark OPTS="--help"
 ```