linux-kernel - [PATCH v2] parisc: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION

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Message-Id: <20210224225706.2726050-1-samitolvanen@google.com>
Date:   Wed, 24 Feb 2021 14:57:06 -0800
From:   Sami Tolvanen <samitolvanen@...gle.com>
To:     "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
        Helge Deller <deller@....de>,
        Guenter Roeck <linux@...ck-us.net>
Cc:     "Steven Rostedt (VMware)" <rostedt@...dmis.org>,
        Kees Cook <keescook@...omium.org>,
        linux-parisc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Sami Tolvanen <samitolvanen@...gle.com>
Subject: [PATCH v2] parisc: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY

parisc uses -fpatchable-function-entry with dynamic ftrace, which means we
don't need recordmcount. Select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
to tell that to the build system.

Reported-by: Guenter Roeck <linux@...ck-us.net>
Fixes: 3b15cdc15956 ("tracing: move function tracer options to Kconfig")
Signed-off-by: Sami Tolvanen <samitolvanen@...gle.com>
---
 arch/parisc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index ecef9aff9d72..f56c67bbe495 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -61,6 +61,7 @@ config PARISC
 	select HAVE_KRETPROBES
 	select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
 	select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
+	select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
 	select HAVE_KPROBES_ON_FTRACE
 	select HAVE_DYNAMIC_FTRACE_WITH_REGS
 	select SET_FS

base-commit: 062c84fccc4444805738d76a2699c4d3c95184ec
-- 
2.30.0.617.g56c4b15f3c-goog