From: Torsten Duwe <duwe@lst.de>
To: Michael Ellerman <mpe@ellerman.id.au>,
ppc-dev <linuxppc-dev@lists.ozlabs.org>
Cc: Jiri Kosina <jkosina@suse.cz>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [PATCH 2/4] ppc64 ftrace configuration
Date: Wed, 3 Jun 2015 15:10:51 +0200 [thread overview]
Message-ID: <20150603131051.GC19424@lst.de> (raw)
In-Reply-To: <20150603130257.GA19424@lst.de>
Add Kconfig variables and Makefile magic for ftrace with -mprofile-kernel
Signed-off-by: Torsten Duwe <duwe@suse.de>
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:[~2015-06-03 13:11 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-13 16:11 [PATCH] ppc64 ftrace: mark data_access callees "notrace" (pt.1) Torsten Duwe
2015-05-15 1:34 ` Michael Ellerman
2015-05-15 8:45 ` Torsten Duwe
2015-05-16 8:05 ` Torsten Duwe
2015-05-18 12:29 ` Jiri Kosina
2015-05-19 3:27 ` Michael Ellerman
2015-05-19 9:52 ` Jiri Kosina
2015-06-03 13:02 ` [PATCH 0/4] ppc64 ftrace implementation Torsten Duwe
2015-06-03 13:08 ` [PATCH 1/4] " Torsten Duwe
2015-06-08 15:30 ` Steven Rostedt
2015-06-08 15:57 ` Torsten Duwe
2015-06-03 13:10 ` Torsten Duwe [this message]
2015-06-03 13:15 ` [PATCH 3/4] ppc64 ftrace: spare early boot and low level code Torsten Duwe
2015-06-03 13:22 ` [PATCH 4/4] ppc64 ftrace recursion protection Torsten Duwe
2015-05-20 9:03 ` [PATCH] ppc64 ftrace: mark data_access callees "notrace" (pt.1) Torsten Duwe
2015-05-26 14:34 ` Torsten Duwe
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