[lttng-dev] [PATCH] Fix: revise obsolete command in README.md

[Shao-Tse Hung]

The obsolete command `make bench` was replaced by `make short_bench` and `make long_bench` in 2015.
However, this command wasn't revised in README, so I follow the previous commit and rewrite it.

Signed-off-by: Shao-Tse Hung <ccs100203 at gmail.com>
---
 README.md | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index a8318c8..1e75589 100644
--- a/README.md
+++ b/README.md
@@ -426,14 +426,15 @@ Make targets
 ------------
 
 In addition to the usual `make check` target, Userspace RCU features
-`make regtest` and `make bench` targets:
+`make regtest`, `make short_bench` and `make long_bench` targets:
 
   - `make check`: short tests, meant to be run when rebuilding or
     porting Userspace RCU.
   - `make regtest`: long (many hours) test, meant to be run when
     modifying Userspace RCU or porting it to a new architecture or
     operating system.
-  - `make bench`: long (many hours) benchmarks.
+  - `make short_bench`: short benchmarks, 3 seconds per test.
+  - `make long_bench`: long (many hours) benchmarks, 30 seconds per test.
 
 
 Known issues
-- 
2.25.1