diff --git a/include/cityhash.h b/include/cityhash.h
index 3b2d1e84b5b3..346fb673a07d 100644
--- a/include/cityhash.h
+++ b/include/cityhash.h
@@ -32,6 +32,13 @@
 extern "C" {
 #endif
 
+/*
+ * Define 1/2/3-argument specialized versions of cityhash4, which can reduce
+ * instruction count (especially multiplication) on some 32-bit arches.
+ */
+_SYS_CITYHASH_H uint64_t cityhash1(uint64_t);
+_SYS_CITYHASH_H uint64_t cityhash2(uint64_t, uint64_t);
+_SYS_CITYHASH_H uint64_t cityhash3(uint64_t, uint64_t, uint64_t);
 _SYS_CITYHASH_H uint64_t cityhash4(uint64_t, uint64_t, uint64_t, uint64_t);
 
 #ifdef	__cplusplus
diff --git a/lib/libzfs/libzfs.abi b/lib/libzfs/libzfs.abi
index 51b29643ee0c..fab97ada68dc 100644
--- a/lib/libzfs/libzfs.abi
+++ b/lib/libzfs/libzfs.abi
@@ -153,6 +153,9 @@
     <elf-symbol name='avl_update_lt' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='avl_walk' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='bookmark_namecheck' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='cityhash1' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='cityhash2' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='cityhash3' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='cityhash4' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='color_end' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='color_start' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@@ -9179,6 +9182,21 @@
     </function-decl>
   </abi-instr>
   <abi-instr address-size='64' path='module/zcommon/cityhash.c' language='LANG_C99'>
+    <function-decl name='cityhash1' mangled-name='cityhash1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='cityhash1'>
+      <parameter type-id='9c313c2d' name='w'/>
+      <return type-id='9c313c2d'/>
+    </function-decl>
+    <function-decl name='cityhash2' mangled-name='cityhash2' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='cityhash2'>
+      <parameter type-id='9c313c2d' name='w1'/>
+      <parameter type-id='9c313c2d' name='w2'/>
+      <return type-id='9c313c2d'/>
+    </function-decl>
+    <function-decl name='cityhash3' mangled-name='cityhash3' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='cityhash3'>
+      <parameter type-id='9c313c2d' name='w1'/>
+      <parameter type-id='9c313c2d' name='w2'/>
+      <parameter type-id='9c313c2d' name='w3'/>
+      <return type-id='9c313c2d'/>
+    </function-decl>
     <function-decl name='cityhash4' mangled-name='cityhash4' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='cityhash4'>
       <parameter type-id='9c313c2d' name='w1'/>
       <parameter type-id='9c313c2d' name='w2'/>
diff --git a/module/zcommon/cityhash.c b/module/zcommon/cityhash.c
index 413a96df2cda..c758ec47d1f6 100644
--- a/module/zcommon/cityhash.c
+++ b/module/zcommon/cityhash.c
@@ -49,8 +49,8 @@ cityhash_helper(uint64_t u, uint64_t v, uint64_t mul)
 	return (b);
 }
 
-uint64_t
-cityhash4(uint64_t w1, uint64_t w2, uint64_t w3, uint64_t w4)
+static inline uint64_t
+cityhash_impl(uint64_t w1, uint64_t w2, uint64_t w3, uint64_t w4)
 {
 	uint64_t mul = HASH_K2 + 64;
 	uint64_t a = w1 * HASH_K1;
@@ -59,9 +59,38 @@ cityhash4(uint64_t w1, uint64_t w2, uint64_t w3, uint64_t w4)
 	uint64_t d = w3 * HASH_K2;
 	return (cityhash_helper(rotate(a + b, 43) + rotate(c, 30) + d,
 	    a + rotate(b + HASH_K2, 18) + c, mul));
+}
 
+/*
+ * Passing w as the 2nd argument could save one 64-bit multiplication.
+ */
+uint64_t
+cityhash1(uint64_t w)
+{
+	return (cityhash_impl(0, w, 0, 0));
+}
+
+uint64_t
+cityhash2(uint64_t w1, uint64_t w2)
+{
+	return (cityhash_impl(w1, w2, 0, 0));
+}
+
+uint64_t
+cityhash3(uint64_t w1, uint64_t w2, uint64_t w3)
+{
+	return (cityhash_impl(w1, w2, w3, 0));
+}
+
+uint64_t
+cityhash4(uint64_t w1, uint64_t w2, uint64_t w3, uint64_t w4)
+{
+	return (cityhash_impl(w1, w2, w3, w4));
 }
 
 #if defined(_KERNEL)
+EXPORT_SYMBOL(cityhash1);
+EXPORT_SYMBOL(cityhash2);
+EXPORT_SYMBOL(cityhash3);
 EXPORT_SYMBOL(cityhash4);
 #endif