Module: xenomai-3
Branch: stable-3.0.x
Commit: 34da16d96c6a171a31f51a8e078b411418380b47
URL:
http://git.xenomai.org/?p=xenomai-3.git;a=commit;h=34da16d96c6a171a31f51a8e078b411418380b47
Author: Philippe Gerum <r...@xenomai.org>
Date: Mon Jul 11 15:42:01 2016 +0200
cobalt/powerpc: remove dependency on obsolete CONFIG_MATH_EMU
---
kernel/cobalt/arch/powerpc/Kconfig | 4 ----
.../arch/powerpc/include/asm/xenomai/fptest.h | 20 +++++++++++---------
2 files changed, 11 insertions(+), 13 deletions(-)
diff --git a/kernel/cobalt/arch/powerpc/Kconfig
b/kernel/cobalt/arch/powerpc/Kconfig
index ef49798..3e950f5 100644
--- a/kernel/cobalt/arch/powerpc/Kconfig
+++ b/kernel/cobalt/arch/powerpc/Kconfig
@@ -1,10 +1,6 @@
source "kernel/xenomai/Kconfig"
source "drivers/xenomai/Kconfig"
-config XENO_ARCH_MATH_EMU
- bool
- default y if MATH_EMU || MATH_EMULATION
-
config IPIPE_WANT_ACTIVE_MM
bool
diff --git a/kernel/cobalt/arch/powerpc/include/asm/xenomai/fptest.h
b/kernel/cobalt/arch/powerpc/include/asm/xenomai/fptest.h
index d99fa64..e907389 100644
--- a/kernel/cobalt/arch/powerpc/include/asm/xenomai/fptest.h
+++ b/kernel/cobalt/arch/powerpc/include/asm/xenomai/fptest.h
@@ -20,21 +20,23 @@
#define _COBALT_POWERPC_ASM_FPTEST_H
#include <linux/errno.h>
+#include <linux/printk.h>
#include <asm/xenomai/uapi/fptest.h>
static inline int fp_kernel_supported(void)
{
+/*
+ * CAUTION: some architectures have a hardware FP unit, but a
+ * restricted set of supported FP instructions. Those may enable
+ * CONFIG_MATH_EMULATION and MATH_EMULATION_HW_UNIMPLEMENTED at the
+ * same time to provide an emulation of the missing instruction set.
+ */
#ifdef CONFIG_PPC_FPU
return 1;
-#else /* !CONFIG_PPC_FPU */
-#ifdef CONFIG_XENO_ARCH_MATH_EMU
- static int once = 0;
- if (!once) {
- once = 1;
- printk("Warning: math emulation code defined in kernel\n"
- " no kernel-based FPU support for this
platform\n");
- }
-#endif /* !CONFIG_XENO_ARCH_MATH_EMU */
+#else
+#ifdef CONFIG_MATH_EMULATION
+ printk_once(XENO_WARN "kernel-based FPU support is disabled\n");
+#endif /* !CONFIG_MATH_EMULATION */
return 0;
#endif /* !CONFIG_PPC_FPU */
}
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