---

yaml --- r: 144949 b: refs/heads/master c: 47740eb h: refs/heads/master i: 144947: 3e69469 v: v3
git-mirror · May 14, 2009 · f0dc1c8 · f0dc1c8
1 parent d5c9228
commit f0dc1c8
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Showing 3 changed files with 12 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5d57c31e5790d44905af0459a21086dbad167d26
+refs/heads/master: 47740eb887796608fb4c629aa6b8507a2fb6c0eb
diff --git a/trunk/arch/mips/include/asm/bitops.h b/trunk/arch/mips/include/asm/bitops.h
@@ -567,7 +567,7 @@ static inline unsigned long __fls(unsigned long word)
 	int num;
 
 	if (BITS_PER_LONG == 32 &&
-	    __builtin_constant_p(cpu_has_mips_r) && cpu_has_mips_r) {
+	    __builtin_constant_p(cpu_has_clo_clz) && cpu_has_clo_clz) {
 		__asm__(
 		"	.set	push					\n"
 		"	.set	mips32					\n"
@@ -644,7 +644,7 @@ static inline int fls(int x)
 {
 	int r;
 
-	if (__builtin_constant_p(cpu_has_mips_r) && cpu_has_mips_r) {
+	if (__builtin_constant_p(cpu_has_clo_clz) && cpu_has_clo_clz) {
 		__asm__("clz %0, %1" : "=r" (x) : "r" (x));
 
 		return 32 - x;

diff --git a/trunk/arch/mips/include/asm/cpu-features.h b/trunk/arch/mips/include/asm/cpu-features.h
@@ -147,6 +147,15 @@
 #define cpu_has_mips_r	(cpu_has_mips32r1 | cpu_has_mips32r2 | \
 			 cpu_has_mips64r1 | cpu_has_mips64r2)
 
+/*
+ * MIPS32, MIPS64, VR5500, IDT32332, IDT32334 and maybe a few other
+ * pre-MIPS32/MIPS53 processors have CLO, CLZ.  For 64-bit kernels
+ * cpu_has_clo_clz also indicates the availability of DCLO and DCLZ.
+ */
+# ifndef cpu_has_clo_clz
+# define cpu_has_clo_clz	cpu_has_mips_r
+# endif
+
 #ifndef cpu_has_dsp
 #define cpu_has_dsp		(cpu_data[0].ases & MIPS_ASE_DSP)
 #endif