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authorStefan Haberland <stefan.haberland@de.ibm.com>2009-09-11 10:28:29 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2009-09-11 10:29:41 +0200
commit68b781fe1bed89011ab7c58ede8476abe64432d2 (patch)
treeafe2148854aa2f4eae370a2cf1855f80a9b5a8cb /drivers/s390/block/dasd_int.h
parent97f604b07473669f4da52b1f859ee45e8d48d42a (diff)
downloadblackbird-op-linux-68b781fe1bed89011ab7c58ede8476abe64432d2.tar.gz
blackbird-op-linux-68b781fe1bed89011ab7c58ede8476abe64432d2.zip
[S390] dasd: optimize cpu usage in goodcase
remove unnecessary dbf call, remove string operations for magic Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/block/dasd_int.h')
-rw-r--r--drivers/s390/block/dasd_int.h11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index b699ca356ac5..5e47a1ee52b9 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -59,6 +59,11 @@
#include <asm/dasd.h>
#include <asm/idals.h>
+/* DASD discipline magic */
+#define DASD_ECKD_MAGIC 0xC5C3D2C4
+#define DASD_DIAG_MAGIC 0xC4C9C1C7
+#define DASD_FBA_MAGIC 0xC6C2C140
+
/*
* SECTION: Type definitions
*/
@@ -540,9 +545,9 @@ extern struct block_device_operations dasd_device_operations;
extern struct kmem_cache *dasd_page_cache;
struct dasd_ccw_req *
-dasd_kmalloc_request(char *, int, int, struct dasd_device *);
+dasd_kmalloc_request(int , int, int, struct dasd_device *);
struct dasd_ccw_req *
-dasd_smalloc_request(char *, int, int, struct dasd_device *);
+dasd_smalloc_request(int , int, int, struct dasd_device *);
void dasd_kfree_request(struct dasd_ccw_req *, struct dasd_device *);
void dasd_sfree_request(struct dasd_ccw_req *, struct dasd_device *);
@@ -587,7 +592,7 @@ void dasd_generic_handle_state_change(struct dasd_device *);
int dasd_generic_pm_freeze(struct ccw_device *);
int dasd_generic_restore_device(struct ccw_device *);
-int dasd_generic_read_dev_chars(struct dasd_device *, char *, void *, int);
+int dasd_generic_read_dev_chars(struct dasd_device *, int, void *, int);
char *dasd_get_sense(struct irb *);
/* externals in dasd_devmap.c */
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