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Sukadev Bhattiprolu
3fbc964864
Define a per-container pid space object. And create one instance of this object, init_pspace, to define the entire pid space. Subsequent patches will provide/use interfaces to create/destroy pid spaces. Its a subset/rework of Eric Biederman's patch http://lkml.org/lkml/2006/2/6/285 . Signed-off-by: Eric Biederman <[email protected]> Signed-off-by: Sukadev Bhattiprolu <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Serge Hallyn <[email protected]> Cc: Cedric Le Goater <[email protected]> Cc: Kirill Korotaev <[email protected]> Cc: Andrey Savochkin <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
24 lines
441 B
C
24 lines
441 B
C
#ifndef _LINUX_PSPACE_H
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#define _LINUX_PSPACE_H
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/threads.h>
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#include <linux/pid.h>
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struct pidmap {
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atomic_t nr_free;
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void *page;
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};
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#define PIDMAP_ENTRIES ((PID_MAX_LIMIT + 8*PAGE_SIZE - 1)/PAGE_SIZE/8)
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struct pspace {
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struct pidmap pidmap[PIDMAP_ENTRIES];
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int last_pid;
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};
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extern struct pspace init_pspace;
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#endif /* _LINUX_PSPACE_H */
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