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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2013-05-02 09:20:30 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-05-02 15:50:28 +0200 |
| commit | 1553556067cd759f4fae8410bdaad33f5add78cc (patch) | |
| tree | fbd61741c3b747ebadd45ef9151604105f374352 /drivers/s390 | |
| parent | e5d709bb5fb758281b5a5dbda50823bb68b3a066 (diff) | |
| download | linux-stable-1553556067cd759f4fae8410bdaad33f5add78cc.tar.gz linux-stable-1553556067cd759f4fae8410bdaad33f5add78cc.tar.bz2 linux-stable-1553556067cd759f4fae8410bdaad33f5add78cc.zip | |
s390/memory hotplug,sclp: get rid of per memory increment usecount
Given that the memory block size is always larger or equal to
the memory increment size there is no need for a usecount anymore.
Each memory increment belongs to exactly one memory block.
So get rid of the usecount.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/char/sclp_cmd.c | 20 |
1 files changed, 2 insertions, 18 deletions
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c index 178836ec252b..bf07c3a188d4 100644 --- a/drivers/s390/char/sclp_cmd.c +++ b/drivers/s390/char/sclp_cmd.c @@ -345,7 +345,6 @@ struct memory_increment { struct list_head list; u16 rn; int standby; - int usecount; }; struct assign_storage_sccb { @@ -463,21 +462,10 @@ static int sclp_mem_change_state(unsigned long start, unsigned long size, break; if (start > istart + rzm - 1) continue; - if (online) { - if (incr->usecount++) - continue; - /* - * Don't break the loop if one assign fails. Loop may - * be walked again on CANCEL and we can't save - * information if state changed before or not. - * So continue and increase usecount for all increments. - */ + if (online) rc |= sclp_assign_storage(incr->rn); - } else { - if (--incr->usecount) - continue; + else sclp_unassign_storage(incr->rn); - } } return rc ? -EIO : 0; } @@ -561,8 +549,6 @@ static void __init sclp_add_standby_memory(void) add_memory_merged(0); } -#define MEM_SCT_SIZE (1UL << SECTION_SIZE_BITS) - static void __init insert_increment(u16 rn, int standby, int assigned) { struct memory_increment *incr, *new_incr; @@ -574,8 +560,6 @@ static void __init insert_increment(u16 rn, int standby, int assigned) return; new_incr->rn = rn; new_incr->standby = standby; - if (!standby) - new_incr->usecount = rzm > MEM_SCT_SIZE ? rzm/MEM_SCT_SIZE : 1; last_rn = 0; prev = &sclp_mem_list; list_for_each_entry(incr, &sclp_mem_list, list) { |