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um: Remove broken SMP support

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At times where UML used the TT mode to operate it had
kind of SMP support. It never got finished nor was
stable.
Let's rip out that cruft and stop confusing developers
which do tree-wide SMP cleanups.

If someone wants SMP support UML it has do be done from scratch.

Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Richard Weinberger
2015-03-18 21:42:54 +01:00
parent d0b5e15f0c
commit 28fa468f53
10 changed files with 2 additions and 366 deletions
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26
arch/um/include/asm/smp.h
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@@ -1,32 +1,6 @@
#ifndef __UM_SMP_H
#define __UM_SMP_H
#ifdef CONFIG_SMP
#include <linux/bitops.h>
#include <asm/current.h>
#include <linux/cpumask.h>
#define raw_smp_processor_id() (current_thread->cpu)
#define cpu_logical_map(n) (n)
#define cpu_number_map(n) (n)
extern int hard_smp_processor_id(void);
#define NO_PROC_ID -1
extern int ncpus;
static inline void smp_cpus_done(unsigned int maxcpus)
{
}
extern struct task_struct *idle_threads[NR_CPUS];
#else
#define hard_smp_processor_id() 0
#endif
#endif