um: Use generic init_task

Same code. Use the generic version. Signed-off-by: Thomas Gleixner <[email protected]> Acked-by: Richard Weinberger <[email protected]> Link: http://lkml.kernel.org/r/[email protected]
ambv · May 5, 2012 · 5b40824 · 5b40824
1 parent d0b691d
commit 5b40824
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Showing 4 changed files with 7 additions and 39 deletions.
diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common
@@ -10,6 +10,7 @@ config UML
 	select GENERIC_IRQ_SHOW
 	select GENERIC_CPU_DEVICES
 	select GENERIC_IO
+	select HAVE_GENERIC_INIT_TASK
 
 config MMU
 	bool

diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile
@@ -10,7 +10,7 @@ CPPFLAGS_vmlinux.lds := -DSTART=$(LDS_START)		\
 extra-y := vmlinux.lds
 clean-files :=
 
-obj-y = config.o exec.o exitcode.o init_task.o irq.o ksyms.o mem.o \
+obj-y = config.o exec.o exitcode.o irq.o ksyms.o mem.o \
 	physmem.o process.o ptrace.o reboot.o sigio.o \
 	signal.o smp.o syscall.o sysrq.o time.o tlb.o trap.o \
 	um_arch.o umid.o skas/

diff --git a/arch/um/kernel/init_task.c b/arch/um/kernel/init_task.c
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
@@ -10,6 +10,7 @@
 #include <linux/seq_file.h>
 #include <linux/string.h>
 #include <linux/utsname.h>
+#include <linux/sched.h>
 #include <asm/pgtable.h>
 #include <asm/processor.h>
 #include <asm/setup.h>
@@ -47,6 +48,10 @@ struct cpuinfo_um boot_cpu_data = {
 	.ipi_pipe		= { -1, -1 }
 };
 
+union thread_union cpu0_irqstack
+	__attribute__((__section__(".data..init_irqstack"))) =
+		{ INIT_THREAD_INFO(init_task) };
+
 unsigned long thread_saved_pc(struct task_struct *task)
 {
 	/* FIXME: Need to look up userspace_pid by cpu */