diff options
| author | Steven Rostedt <srostedt@redhat.com> | 2009-10-20 19:19:34 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-09 15:55:26 -0700 |
| commit | ac4642d045978eadc2886c97bd2066972ec26dca (patch) | |
| tree | e2d386ca5343d9285ff7dc403b4b191973ca9158 /tools/perf | |
| parent | 7d5a5a07e9bb0d57c2d7d034da8702000db07550 (diff) | |
perf tools: Add 'make DEBUG=1' to remove the -O6 cflag
commit 60d526f7fa6246b8e32d5b45610d625a5608d988 upstream.
When using gdb to debug perf, it is practically impossible to
use when perf is compiled with -O6. For developers, this patch
adds the DEBUG feature to the make command line so that a
developer can easily remove the optimization flag.
LKML-Reference: <1255590330.8392.446.camel@twins>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091020232033.984323261@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
[bwh: Backport to 2.6.32]
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/Makefile | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 3a018b53581..2528a600295 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -200,7 +200,14 @@ EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wold-style-definition EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wstrict-prototypes EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wdeclaration-after-statement -CFLAGS = $(MBITS) -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) +ifeq ("$(origin DEBUG)", "command line") + PERF_DEBUG = $(DEBUG) +endif +ifndef PERF_DEBUG + CFLAGS_OPTIMIZE = -O6 +endif + +CFLAGS = $(MBITS) -ggdb3 -Wall -Wextra -std=gnu99 -Werror $(CFLAGS_OPTIMIZE) -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) LDFLAGS = -lpthread -lrt -lelf -lm ALL_CFLAGS = $(CFLAGS) ALL_LDFLAGS = $(LDFLAGS) |