[tip:perfcounters/core] perf_counter tools: Optimize harder
From: tip-bot for Ingo Molnar
Date: Wed Jun 03 2009 - 15:22:21 EST
Commit-ID: 095b3a6a030f7d4f24825ae93fc384b3d4b4fafa
Gitweb: http://git.kernel.org/tip/095b3a6a030f7d4f24825ae93fc384b3d4b4fafa
Author: Ingo Molnar <mingo@xxxxxxx>
AuthorDate: Wed, 3 Jun 2009 20:13:51 +0200
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Wed, 3 Jun 2009 20:15:15 +0200
perf_counter tools: Optimize harder
Use -O6 to build the tools.
Before:
12387507370 instructions # 3121.653 M/sec
After:
6244894971 instructions # 3458.437 M/sec
Almost twice as fast!
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
Documentation/perf_counter/Makefile | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/Documentation/perf_counter/Makefile b/Documentation/perf_counter/Makefile
index eae8856..005709b 100644
--- a/Documentation/perf_counter/Makefile
+++ b/Documentation/perf_counter/Makefile
@@ -159,7 +159,7 @@ uname_V := $(shell sh -c 'uname -v 2>/dev/null || echo not')
# CFLAGS and LDFLAGS are for the users to override from the command line.
-CFLAGS = -ggdb3 -Wall -Werror -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -std=gnu99 -Wdeclaration-after-statement
+CFLAGS = -ggdb3 -Wall -Werror -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -std=gnu99 -Wdeclaration-after-statement -O6
LDFLAGS = -lpthread -lrt -lelf
ALL_CFLAGS = $(CFLAGS)
ALL_LDFLAGS = $(LDFLAGS)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/