diff options
| -rw-r--r-- | include/linux/pspace.h | 16 | ||||
| -rw-r--r-- | kernel/pid.c | 7 |
2 files changed, 17 insertions, 6 deletions
diff --git a/include/linux/pspace.h b/include/linux/pspace.h new file mode 100644 index 00000000000000..a8a064b0ad18fe --- /dev/null +++ b/include/linux/pspace.h @@ -0,0 +1,16 @@ +#ifndef _LINUX_PSPACE_H +#define _LINUX_PSPACE_H + +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/threads.h> +#include <linux/pid.h> + +struct pidmap { + atomic_t nr_free; + void *page; +}; + +#define PIDMAP_ENTRIES ((PID_MAX_LIMIT + 8*PAGE_SIZE - 1)/PAGE_SIZE/8) + +#endif /* _LINUX_PSPACE_H */ diff --git a/kernel/pid.c b/kernel/pid.c index 373639a10d8456..8234bd08a3cb32 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -26,6 +26,7 @@ #include <linux/init.h> #include <linux/bootmem.h> #include <linux/hash.h> +#include <linux/pspace.h> #define pid_hashfn(nr) hash_long((unsigned long)nr, pidhash_shift) static struct hlist_head *pid_hash; @@ -40,7 +41,6 @@ int last_pid; int pid_max_min = RESERVED_PIDS + 1; int pid_max_max = PID_MAX_LIMIT; -#define PIDMAP_ENTRIES ((PID_MAX_LIMIT + 8*PAGE_SIZE - 1)/PAGE_SIZE/8) #define BITS_PER_PAGE (PAGE_SIZE*8) #define BITS_PER_PAGE_MASK (BITS_PER_PAGE-1) #define mk_pid(map, off) (((map) - pidmap_array)*BITS_PER_PAGE + (off)) @@ -53,11 +53,6 @@ int pid_max_max = PID_MAX_LIMIT; * value does not cause lots of bitmaps to be allocated, but * the scheme scales to up to 4 million PIDs, runtime. */ -struct pidmap { - atomic_t nr_free; - void *page; -}; - static struct pidmap pidmap_array[PIDMAP_ENTRIES] = { [ 0 ... PIDMAP_ENTRIES-1 ] = { ATOMIC_INIT(BITS_PER_PAGE), NULL } }; |