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authorPeter Zijlstra <peterz@infradead.org>2020-08-06 14:36:20 +0200
committerIngo Molnar <mingo@kernel.org>2020-08-06 16:13:13 +0200
commitb3545192e2b4647234254c5122f8cbfddbcbdaa0 (patch)
tree734659cd75af8ea8418c9d5f978c6622b478ebc6 /arch/ia64/include
parent13c01139b17163c9b2aa543a9c39f8bbc875b625 (diff)
locking, arch/ia64: Reduce <asm/smp.h> header dependencies by moving XTP bits into the new <asm/xtp.h> header
We want to remove the #include <asm/io.h> from <asm/smp.h>, but for this we have to move the XTP bits into a separate header first (as these bits rely on <asm/io.h> definitions), and include them in the .c files that rely on those APIs. Co-developed-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/ia64/include')
-rw-r--r--arch/ia64/include/asm/smp.h35
-rw-r--r--arch/ia64/include/asm/xtp.h46
2 files changed, 46 insertions, 35 deletions
diff --git a/arch/ia64/include/asm/smp.h b/arch/ia64/include/asm/smp.h
index 7847ae40a181..aa92234c0142 100644
--- a/arch/ia64/include/asm/smp.h
+++ b/arch/ia64/include/asm/smp.h
@@ -18,7 +18,6 @@
#include <linux/bitops.h>
#include <linux/irqreturn.h>
-#include <asm/io.h>
#include <asm/param.h>
#include <asm/processor.h>
#include <asm/ptrace.h>
@@ -44,11 +43,6 @@ ia64_get_lid (void)
#ifdef CONFIG_SMP
-#define XTP_OFFSET 0x1e0008
-
-#define SMP_IRQ_REDIRECTION (1 << 0)
-#define SMP_IPI_REDIRECTION (1 << 1)
-
#define raw_smp_processor_id() (current_thread_info()->cpu)
extern struct smp_boot_data {
@@ -62,7 +56,6 @@ extern cpumask_t cpu_core_map[NR_CPUS];
DECLARE_PER_CPU_SHARED_ALIGNED(cpumask_t, cpu_sibling_map);
extern int smp_num_siblings;
extern void __iomem *ipi_base_addr;
-extern unsigned char smp_int_redirect;
extern volatile int ia64_cpu_to_sapicid[];
#define cpu_physical_id(i) ia64_cpu_to_sapicid[i]
@@ -84,34 +77,6 @@ cpu_logical_id (int cpuid)
return i;
}
-/*
- * XTP control functions:
- * min_xtp : route all interrupts to this CPU
- * normal_xtp: nominal XTP value
- * max_xtp : never deliver interrupts to this CPU.
- */
-
-static inline void
-min_xtp (void)
-{
- if (smp_int_redirect & SMP_IRQ_REDIRECTION)
- writeb(0x00, ipi_base_addr + XTP_OFFSET); /* XTP to min */
-}
-
-static inline void
-normal_xtp (void)
-{
- if (smp_int_redirect & SMP_IRQ_REDIRECTION)
- writeb(0x08, ipi_base_addr + XTP_OFFSET); /* XTP normal */
-}
-
-static inline void
-max_xtp (void)
-{
- if (smp_int_redirect & SMP_IRQ_REDIRECTION)
- writeb(0x0f, ipi_base_addr + XTP_OFFSET); /* Set XTP to max */
-}
-
/* Upping and downing of CPUs */
extern int __cpu_disable (void);
extern void __cpu_die (unsigned int cpu);
diff --git a/arch/ia64/include/asm/xtp.h b/arch/ia64/include/asm/xtp.h
new file mode 100644
index 000000000000..5bf1d70ad860
--- /dev/null
+++ b/arch/ia64/include/asm/xtp.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_IA64_XTP_H
+#define _ASM_IA64_XTP_H
+
+#include <asm/io.h>
+
+#ifdef CONFIG_SMP
+
+#define XTP_OFFSET 0x1e0008
+
+#define SMP_IRQ_REDIRECTION (1 << 0)
+#define SMP_IPI_REDIRECTION (1 << 1)
+
+extern unsigned char smp_int_redirect;
+
+/*
+ * XTP control functions:
+ * min_xtp : route all interrupts to this CPU
+ * normal_xtp: nominal XTP value
+ * max_xtp : never deliver interrupts to this CPU.
+ */
+
+static inline void
+min_xtp (void)
+{
+ if (smp_int_redirect & SMP_IRQ_REDIRECTION)
+ writeb(0x00, ipi_base_addr + XTP_OFFSET); /* XTP to min */
+}
+
+static inline void
+normal_xtp (void)
+{
+ if (smp_int_redirect & SMP_IRQ_REDIRECTION)
+ writeb(0x08, ipi_base_addr + XTP_OFFSET); /* XTP normal */
+}
+
+static inline void
+max_xtp (void)
+{
+ if (smp_int_redirect & SMP_IRQ_REDIRECTION)
+ writeb(0x0f, ipi_base_addr + XTP_OFFSET); /* Set XTP to max */
+}
+
+#endif /* CONFIG_SMP */
+
+#endif /* _ASM_IA64_XTP_Hy */