From: Torsten Duwe <duwe@lst•de>
To: Steven Rostedt <rostedt@goodmis•org>,
Michael Ellerman <mpe@ellerman•id.au>
Cc: Jiri Kosina <jkosina@suse•cz>,
linuxppc-dev@lists•ozlabs.org, linux-kernel@vger•kernel.org
Subject: [PATCH v2 2/4] ppc64 ftrace_with_regs configuration variables
Date: Fri, 19 Jun 2015 16:08:29 +0200 [thread overview]
Message-ID: <20150619140829.GB8824@lst.de> (raw)
In-Reply-To: <20150619140403.GA8681@lst.de>
* Makefile:
- globally use -mprofile-kernel in case it's configured.
* arch/powerpc/Kconfig / kernel/trace/Kconfig:
- declare that ppc64 HAVE_MPROFILE_KERNEL and
HAVE_DYNAMIC_FTRACE_WITH_REGS, and use it.
Signed-off-by: Torsten Duwe <duwe@suse•de>
---
Makefile | 5 ++++-
arch/powerpc/Kconfig | 2 ++
kernel/trace/Kconfig | 5 +++++
3 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
index 3d16bcc..bbd5e87 100644
--- a/Makefile
+++ b/Makefile
@@ -733,7 +733,10 @@ export CC_FLAGS_FTRACE
ifdef CONFIG_HAVE_FENTRY
CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
endif
-KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY)
+ifdef CONFIG_HAVE_MPROFILE_KERNEL
+CC_USING_MPROFILE_KERNEL := $(call cc-option, -mprofile-kernel -DCC_USING_MPROFILE_KERNEL)
+endif
+KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY) $(CC_USING_MPROFILE_KERNEL)
KBUILD_AFLAGS += $(CC_USING_FENTRY)
ifdef CONFIG_DYNAMIC_FTRACE
ifdef CONFIG_HAVE_C_RECORDMCOUNT
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 22b0940..566f204 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -94,8 +94,10 @@ config PPC
select OF_RESERVED_MEM
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_DYNAMIC_FTRACE
+ select HAVE_DYNAMIC_FTRACE_WITH_REGS
select HAVE_FUNCTION_TRACER
select HAVE_FUNCTION_GRAPH_TRACER
+ select HAVE_MPROFILE_KERNEL
select SYSCTL_EXCEPTION_TRACE
select ARCH_WANT_OPTIONAL_GPIOLIB
select VIRT_TO_BUS if !PPC64
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index a5da09c..dd53f3d 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -52,6 +52,11 @@ config HAVE_FENTRY
help
Arch supports the gcc options -pg with -mfentry
+config HAVE_MPROFILE_KERNEL
+ bool
+ help
+ Arch supports the gcc options -pg with -mprofile-kernel
+
config HAVE_C_RECORDMCOUNT
bool
help
next prev parent reply other threads:[~2015-06-19 14:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-19 14:04 [PATCH v2 0/4] ppc64 LE ABI v2 ftrace-with-regs implementation Torsten Duwe
2015-06-19 14:07 ` [PATCH v2 1/4] ppc64 FTRACE_WITH_REGS implementation Torsten Duwe
2015-06-19 14:08 ` Torsten Duwe [this message]
2015-06-19 14:09 ` [PATCH v2 3/4] ppc64 ftrace_with_regs: spare early boot and low level code Torsten Duwe
2015-06-19 14:09 ` [PATCH v2 4/4] ppc64 ftrace_with_regs recursion protection Torsten Duwe
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