This is just a tiny optimization. The remapping is not needed when the kernel text mapping is read write all the time.
Suggested-by: Jan Beulich <jbeul...@suse.com> Signed-off-by: Petr Mladek <pmla...@suse.cz> --- arch/x86/kernel/ftrace.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index cbc4a91b131e..a7a517bb793e 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -79,6 +79,7 @@ within(unsigned long addr, unsigned long start, unsigned long end) static unsigned long text_ip_addr(unsigned long ip) { +#ifdef CONFIG_DEBUG_RODATA /* * On x86_64, kernel text mappings are mapped read-only with * CONFIG_DEBUG_RODATA. So we use the kernel identity mapping instead @@ -89,7 +90,7 @@ static unsigned long text_ip_addr(unsigned long ip) */ if (within(ip, (unsigned long)_text, (unsigned long)_etext)) ip = (unsigned long)__va(__pa_symbol(ip)); - +#endif return ip; } -- 1.8.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/