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| author |   Paul Burton <paul.burton@mips.com> | 2018-11-07 23:14:03 +0000 |
|---|---|---|
| committer | Paul Burton <paul.burton@mips.com> | 2018-11-09 10:23:15 -0800 |
| commit | b372e83b67eb296d85654e2dde8a0e6105083b16 (patch) | |
| tree | 46c4b668189cedd8b93adee5063de7864b88c974 /arch/mips/include/asm/cpu-features.h | |
| parent | MIPS: Introduce CONFIG_MIPS_FP_SUPPORT (diff) | |
| download | linux-dev-b372e83b67eb296d85654e2dde8a0e6105083b16.tar.xz linux-dev-b372e83b67eb296d85654e2dde8a0e6105083b16.zip | |
MIPS: Hardcode cpu_has_fpu=0 when CONFIG_MIPS_FP_SUPPORT=n
When CONFIG_MIPS_FP_SUPPORT=n we don't support floating point, so
there's no point in detecting presence of an FPU. Hardcode
cpu_has_fpu=0 such that we optimize out code that makes use of the FPU.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/21005/
Cc: linux-mips@linux-mips.org
Diffstat (limited to '')
| -rw-r--r-- | arch/mips/include/asm/cpu-features.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h index 8669fdb503a5..450e0638f22d 100644 --- a/arch/mips/include/asm/cpu-features.h +++ b/arch/mips/include/asm/cpu-features.h @@ -115,10 +115,15 @@ #endif /* Don't override `cpu_has_fpu' to 1 or the "nofpu" option won't work. */ #ifndef cpu_has_fpu -#define cpu_has_fpu (current_cpu_data.options & MIPS_CPU_FPU) -#define raw_cpu_has_fpu (raw_current_cpu_data.options & MIPS_CPU_FPU) +# ifdef CONFIG_MIPS_FP_SUPPORT +# define cpu_has_fpu (current_cpu_data.options & MIPS_CPU_FPU) +# define raw_cpu_has_fpu (raw_current_cpu_data.options & MIPS_CPU_FPU) +# else +# define cpu_has_fpu 0 +# define raw_cpu_has_fpu 0 +# endif #else -#define raw_cpu_has_fpu cpu_has_fpu +# define raw_cpu_has_fpu cpu_has_fpu #endif #ifndef cpu_has_32fpr #define cpu_has_32fpr __isa_ge_or_opt(1, MIPS_CPU_32FPR) |