diff --git a/arch/x86/kernel/apb_timer.c b/arch/x86/kernel/apb_timer.c
index afdc3f75..cc74fd0 100644
--- a/arch/x86/kernel/apb_timer.c
+++ b/arch/x86/kernel/apb_timer.c
@@ -311,7 +311,6 @@
 #ifdef CONFIG_SMP
 	int i;
 	struct sfi_timer_table_entry *p_mtmr;
-	unsigned int percpu_timer;
 	struct apbt_dev *adev;
 #endif
 
@@ -346,13 +345,10 @@
 		return;
 	}
 	pr_debug("%s: %d CPUs online\n", __func__, num_online_cpus());
-	if (num_possible_cpus() <= sfi_mtimer_num) {
-		percpu_timer = 1;
+	if (num_possible_cpus() <= sfi_mtimer_num)
 		apbt_num_timers_used = num_possible_cpus();
-	} else {
-		percpu_timer = 0;
+	else
 		apbt_num_timers_used = 1;
-	}
 	pr_debug("%s: %d APB timers used\n", __func__, apbt_num_timers_used);
 
 	/* here we set up per CPU timer data structure */
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index b629bbe..29a8120 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -22,7 +22,7 @@
 #include <linux/perf_event.h>
 #include <linux/hw_breakpoint.h>
 #include <linux/rcupdate.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/context_tracking.h>
 
 #include <asm/uaccess.h>
diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c
index dbbdca5..0f92173 100644
--- a/arch/x86/platform/uv/tlb_uv.c
+++ b/arch/x86/platform/uv/tlb_uv.c
@@ -1467,7 +1467,7 @@
 	}
 
 	if (input_arg == 0) {
-		elements = sizeof(stat_description)/sizeof(*stat_description);
+		elements = ARRAY_SIZE(stat_description);
 		printk(KERN_DEBUG "# cpu:      cpu number\n");
 		printk(KERN_DEBUG "Sender statistics:\n");
 		for (i = 0; i < elements; i++)
@@ -1508,7 +1508,7 @@
 	char *q;
 	int cnt = 0;
 	int val;
-	int e = sizeof(tunables) / sizeof(*tunables);
+	int e = ARRAY_SIZE(tunables);
 
 	p = instr + strspn(instr, WHITESPACE);
 	q = p;
diff --git a/arch/x86/um/fault.c b/arch/x86/um/fault.c
index 8784ab3..84ac7f7 100644
--- a/arch/x86/um/fault.c
+++ b/arch/x86/um/fault.c
@@ -20,7 +20,7 @@
 	const struct exception_table_entry *fixup;
 
 	fixup = search_exception_tables(address);
-	if (fixup != 0) {
+	if (fixup) {
 		UPT_IP(regs) = fixup->fixup;
 		return 1;
 	}