From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org, Paul Mackerras <paulus@samba.org>,
Milton Miller <miltonm@bga.com>,
Michael Ellerman <michael@ellerman.id.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
linuxppc-dev@ozlabs.org
Subject: [PATCH 5/5] powerpc/ppc32: static ftrace fixes for PPC32
Date: Wed, 26 Nov 2008 16:58:26 -0500 [thread overview]
Message-ID: <20081126220423.701125085@goodmis.org> (raw)
In-Reply-To: 20081126215821.263324391@goodmis.org
From: Steven Rostedt <rostedt@gollum.(none)>
Impact: fix for PowerPC 32 code
There were some early init code that was not safe for static
ftrace to boot on my PowerBook. This code must only use relative
addressing, and static mcount performs a compare of the
ftrace_trace_function pointer, and gets that with an absolute address.
In the early init boot up code, this will cause a fault.
This patch removes tracing from the files containing the offending
functions.
Signed-off-by: Steven Rostedt <rostedt@gollum.(none)>
---
arch/powerpc/kernel/Makefile | 1 +
arch/powerpc/lib/Makefile | 3 +++
2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 92673b4..d17edb4 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -17,6 +17,7 @@ ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_cputable.o = -pg -mno-sched-epilog
CFLAGS_REMOVE_prom_init.o = -pg -mno-sched-epilog
CFLAGS_REMOVE_btext.o = -pg -mno-sched-epilog
+CFLAGS_REMOVE_prom.o = -pg -mno-sched-epilog
ifdef CONFIG_DYNAMIC_FTRACE
# dynamic ftrace setup.
diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
index d69912c..8db3527 100644
--- a/arch/powerpc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
@@ -6,6 +6,9 @@ ifeq ($(CONFIG_PPC64),y)
EXTRA_CFLAGS += -mno-minimal-toc
endif
+CFLAGS_REMOVE_code-patching.o = -pg
+CFLAGS_REMOVE_feature-fixups.o = -pg
+
obj-y := string.o alloc.o \
checksum_$(CONFIG_WORD_SIZE).o
obj-$(CONFIG_PPC32) += div64.o copy_32.o crtsavres.o
--
1.5.6.5
--
next prev parent reply other threads:[~2008-11-26 22:04 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-26 21:58 [PATCH 0/5] powerpc: ftrace updates to previous patch series Steven Rostedt
2008-11-26 21:58 ` [PATCH 1/5] powerpc: ftrace, do nothing in mcount call for dyn ftrace Steven Rostedt
2008-11-26 21:58 ` [PATCH 2/5] powerpc: ftrace, fix cast aliasing and add code verification Steven Rostedt
2008-11-26 21:58 ` [PATCH 3/5] powerpc: ftrace, added missing icache flush Steven Rostedt
2008-11-26 21:58 ` [PATCH 4/5] powerpc: ftrace, use create_branch Steven Rostedt
2008-11-27 22:06 ` Michael Ellerman
2008-11-26 21:58 ` Steven Rostedt [this message]
2008-11-26 22:41 ` [PATCH 5/5] powerpc/ppc32: static ftrace fixes for PPC32 Steven Rostedt
2008-11-26 22:50 ` [PATCH 0/5] powerpc: ftrace updates to previous patch series Steven Rostedt
2008-11-28 13:10 ` Ingo Molnar
2008-12-01 18:15 ` Steven Rostedt
2008-12-19 5:01 ` Paul Mackerras
2008-12-19 5:42 ` Steven Rostedt
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