[PATCH 1/2] [PATCH 1/2] perf tools: add make DEBUG=1 to remove the -O6 cflag

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From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>,
	Andrew Morton <akpm@linux-foundation.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 1/2] [PATCH 1/2] perf tools: add make DEBUG=1 to remove the -O6 cflag
Date: Tue, 20 Oct 2009 19:19:34 -0400	[thread overview]
Message-ID: <20091020232033.984323261@goodmis.org> (raw)
In-Reply-To: 20091020231933.203083200@goodmis.org

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From: Steven Rostedt <srostedt@redhat.com>

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.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <1255590330.8392.446.camel@twins>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 tools/perf/Makefile |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index db89a6d..4eff0be 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -201,7 +201,14 @@ 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)
-- 
1.6.3.3

next prev parent reply	other threads:[~2009-10-20 23:20 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-20 23:19 [PATCH 0/2] [GIT PULL] perf tools: trace parse fix and debug compiling Steven Rostedt
2009-10-20 23:19 ` Steven Rostedt [this message]
2009-10-24  1:03   ` [tip:branch?] perf tools: Add 'make DEBUG=1' to remove the -O6 cflag tip-bot for Steven Rostedt
2009-10-20 23:19 ` [PATCH 2/2] [PATCH 2/2] perf tools: use strsep over strtok_r for parsing single line Steven Rostedt
2009-10-24  1:03   ` [tip:branch?] perf tools: Use strsep() over strtok_r() " tip-bot for Steven Rostedt
  -- strict thread matches above, loose matches on Subject: below --
2009-10-14 19:43 [PATCH 00/13] [GIT PULL] perf tools: updates to parsing events Steven Rostedt
2009-10-14 19:43 ` [PATCH 01/13] [PATCH 01/13] perf tools: handle print concatinations in event format file Steven Rostedt
2009-10-15  8:48   ` [tip:perf/core] perf tools: Handle print concatenations " tip-bot for Steven Rostedt
2009-10-14 19:43 ` [PATCH 02/13] [PATCH 02/13] perf tools: fix backslash processing on trace print formats Steven Rostedt
2009-10-15  8:48   ` [tip:perf/core] perf tools: Fix " tip-bot for Steven Rostedt
2009-10-14 19:43 ` [PATCH 03/13] [PATCH 03/13] perf tools: handle trace parsing of < and > Steven Rostedt
2009-10-15  8:48   ` [tip:perf/core] perf tools: Handle " tip-bot for Steven Rostedt
2009-10-14 19:43 ` [PATCH 04/13] [PATCH 04/13] perf tools: handle arrays in print fields for trace parsing Steven Rostedt
2009-10-15  8:48   ` [tip:perf/core] perf tools: Handle " tip-bot for Steven Rostedt
2009-10-14 19:43 ` [PATCH 05/13] [PATCH 05/13] perf tools: handle * as typecast in " Steven Rostedt
2009-10-15  8:49   ` [tip:perf/core] perf tools: Handle " tip-bot for Steven Rostedt
2009-10-14 19:43 ` [PATCH 06/13] [PATCH 06/13] perf tools: handle newlines in trace parsing better Steven Rostedt
2009-10-15  8:49   ` [tip:perf/core] perf tools: Handle " tip-bot for Steven Rostedt
2009-10-14 19:43 ` [PATCH 07/13] [PATCH 07/13] perf tools: handle the case with and without the "signed" trace field Steven Rostedt
2009-10-15  8:49   ` [tip:perf/core] perf tools: Handle " tip-bot for Steven Rostedt
2009-10-14 19:43 ` [PATCH 08/13] [PATCH 08/13] perf tools: still continue on failed parsing of an event Steven Rostedt
2009-10-15  8:49   ` [tip:perf/core] perf tools: Still " tip-bot for Steven Rostedt
2009-10-14 19:43 ` [PATCH 09/13] [PATCH 09/13] perf tools: fix bprintk reading in trace output Steven Rostedt
2009-10-15  8:50   ` [tip:perf/core] perf tools: Fix " tip-bot for Steven Rostedt
2009-10-14 19:43 ` [PATCH 10/13] [PATCH 10/13] perf tools: handle both versions of ftrace output Steven Rostedt
2009-10-15  8:50   ` [tip:perf/core] perf tools: Handle " tip-bot for Steven Rostedt
2009-10-14 19:43 ` [PATCH 11/13] [PATCH 11/13] perf tools: add latency format to trace output Steven Rostedt
2009-10-15  8:50   ` [tip:perf/core] perf tools: Add " tip-bot for Steven Rostedt
2009-10-14 19:43 ` [PATCH 12/13] [PATCH 12/13] perf tools: handle - and + in parsing trace print format Steven Rostedt
2009-10-15  6:42   ` Ingo Molnar
2009-10-15  7:05     ` Peter Zijlstra
2009-10-15  9:20       ` Steven Rostedt
2009-10-15  8:50   ` [tip:perf/core] perf tools: Handle " tip-bot for Steven Rostedt
2009-10-14 19:43 ` [PATCH 13/13] [PATCH 13/13] perf tools: remove all char * typecasts and use const in prototype Steven Rostedt
2009-10-14 20:26   ` Frederic Weisbecker
2009-10-15  8:51   ` [tip:perf/core] perf tools: Remove " tip-bot for Steven Rostedt
2009-10-15  8:55 ` [PATCH 00/13] [GIT PULL] perf tools: updates to parsing events Ingo Molnar

find likely ancestor, descendant, or conflicting patches for this message:
( dfblob:db89a6d dfblob:4eff0be )
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bs:"[PATCH 1/2] [PATCH 1/2] perf tools: add make DEBUG=1 to remove the -O6 cflag" )
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