[MIPS] Avoid duplicate do_syscall_trace calls on return from sigreturn.

[powerpc.git] / arch / mips / kernel / setup.c

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 6fc51b2..d86affa 100644 (file)
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -37,12 +37,13 @@
 
 #include <asm/addrspace.h>
 #include <asm/bootinfo.h>
+#include <asm/cache.h>
 #include <asm/cpu.h>
 #include <asm/sections.h>
 #include <asm/setup.h>
 #include <asm/system.h>
 
-struct cpuinfo_mips cpu_data[NR_CPUS];
+struct cpuinfo_mips cpu_data[NR_CPUS] __read_mostly;
 
 EXPORT_SYMBOL(cpu_data);
 
@@ -62,8 +63,8 @@ EXPORT_SYMBOL(PCI_DMA_BUS_IS_PHYS);
  *
  * These are initialized so they are in the .data section
  */
-unsigned long mips_machtype = MACH_UNKNOWN;
-unsigned long mips_machgroup = MACH_GROUP_UNKNOWN;
+unsigned long mips_machtype __read_mostly = MACH_UNKNOWN;
+unsigned long mips_machgroup __read_mostly = MACH_GROUP_UNKNOWN;
 
 EXPORT_SYMBOL(mips_machtype);
 EXPORT_SYMBOL(mips_machgroup);
@@ -77,7 +78,7 @@ static char command_line[CL_SIZE];
  * mips_io_port_base is the begin of the address space to which x86 style
  * I/O ports are mapped.
  */
-const unsigned long mips_io_port_base = -1;
+const unsigned long mips_io_port_base __read_mostly = -1;
 EXPORT_SYMBOL(mips_io_port_base);
 
 /*
@@ -549,3 +550,12 @@ int __init fpu_disable(char *s)
 }
 
 __setup("nofpu", fpu_disable);
+
+int __init dsp_disable(char *s)
+{
+       cpu_data[0].ases &= ~MIPS_ASE_DSP;
+
+       return 1;
+}
+
+__setup("nodsp", dsp_disable);