From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Rostedt Subject: [RFA][PATCH 19/27] sh: ftrace: Remove check of obsolete variable function_trace_stop Date: Thu, 26 Jun 2014 12:52:40 -0400 Message-ID: <20140626165852.312670231@goodmis.org> References: <20140626165221.736847419@goodmis.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: Received: from cdptpa-outbound-snat.email.rr.com ([107.14.166.226]:61228 "EHLO cdptpa-oedge-vip.email.rr.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1758026AbaFZRAI (ORCPT ); Thu, 26 Jun 2014 13:00:08 -0400 Content-Disposition: inline; filename=0019-sh-ftrace-Remove-check-of-obsolete-variable-function.patch Sender: linux-arch-owner@vger.kernel.org List-ID: To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , Thomas Gleixner , Masami Hiramatsu , "H. Peter Anvin" , linux-arch@vger.kernel.org, "Rafael J. Wysocki" , Jiri Kosina , Josh Poimboeuf , Matt Fleming , Paul Mundt From: "Steven Rostedt (Red Hat)" Nothing sets function_trace_stop to disable function tracing anymore. Remove the check for it in the arch code. [ Please test this on your arch ] Cc: Matt Fleming Cc: Paul Mundt Signed-off-by: Steven Rostedt --- arch/sh/Kconfig | 1 - arch/sh/lib/mcount.S | 24 ++---------------------- 2 files changed, 2 insertions(+), 23 deletions(-) diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 834b67c4db5a..aa2df3eaeb29 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -57,7 +57,6 @@ config SUPERH32 select HAVE_FUNCTION_TRACER select HAVE_FTRACE_MCOUNT_RECORD select HAVE_DYNAMIC_FTRACE - select HAVE_FUNCTION_TRACE_MCOUNT_TEST select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE select ARCH_WANT_IPC_PARSE_VERSION select HAVE_FUNCTION_GRAPH_TRACER diff --git a/arch/sh/lib/mcount.S b/arch/sh/lib/mcount.S index 52aa2011d753..7a8572f9d58b 100644 --- a/arch/sh/lib/mcount.S +++ b/arch/sh/lib/mcount.S @@ -92,13 +92,6 @@ mcount: rts nop #else -#ifndef CONFIG_DYNAMIC_FTRACE - mov.l .Lfunction_trace_stop, r0 - mov.l @r0, r0 - tst r0, r0 - bf ftrace_stub -#endif - MCOUNT_ENTER() #ifdef CONFIG_DYNAMIC_FTRACE @@ -174,11 +167,6 @@ ftrace_graph_call: .globl ftrace_caller ftrace_caller: - mov.l .Lfunction_trace_stop, r0 - mov.l @r0, r0 - tst r0, r0 - bf ftrace_stub - MCOUNT_ENTER() .globl ftrace_call @@ -196,8 +184,6 @@ ftrace_call: #endif /* CONFIG_DYNAMIC_FTRACE */ .align 2 -.Lfunction_trace_stop: - .long function_trace_stop /* * NOTE: From here on the locations of the .Lftrace_stub label and @@ -217,12 +203,7 @@ ftrace_stub: #ifdef CONFIG_FUNCTION_GRAPH_TRACER .globl ftrace_graph_caller ftrace_graph_caller: - mov.l 2f, r0 - mov.l @r0, r0 - tst r0, r0 - bt 1f - - mov.l 3f, r1 + mov.l 2f, r1 jmp @r1 nop 1: @@ -242,8 +223,7 @@ ftrace_graph_caller: MCOUNT_LEAVE() .align 2 -2: .long function_trace_stop -3: .long skip_trace +2: .long skip_trace .Lprepare_ftrace_return: .long prepare_ftrace_return -- 2.0.0