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authorLinus Torvalds <torvalds@linux-foundation.org>2009-10-11 11:34:50 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-10-11 11:34:50 -0700
commitf144c78e525542c94e0dcb171b41cc5ef7b341b3 (patch)
treea94920a3f87a11ad1875e08619a60e748b626e34 /arch/s390/kernel/swsusp_asm64.S
parentef1f7a7e878e4ae37b3a78ebdeef9f911bae59df (diff)
parent6fca97a958bc3c67566aa91eafc6a5be2e66d6b3 (diff)
Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (21 commits) [S390] dasd: fix race condition in resume code [S390] Add EX_TABLE for addressing exception in usercopy functions. [S390] 64-bit register support for 31-bit processes [S390] hibernate: Use correct place for CPU address in lowcore [S390] pm: ignore time spend in suspended state [S390] zcrypt: Improve some comments [S390] zcrypt: Fix sparse warning. [S390] perf_counter: fix vdso detection [S390] ftrace: drop nmi protection [S390] compat: fix truncate system call wrapper [S390] Provide arch specific mdelay implementation. [S390] Fix enabled udelay for short delays. [S390] cio: allow setting boxed devices offline [S390] cio: make not operational handling consistent [S390] cio: make disconnected handling consistent [S390] Fix memory leak in /proc/cio_ignore [S390] cio: channel path memory leak [S390] module: fix memory leak in s390 module loader [S390] Enable kmemleak on s390. [S390] 3270 console build fix ...
Diffstat (limited to 'arch/s390/kernel/swsusp_asm64.S')
-rw-r--r--arch/s390/kernel/swsusp_asm64.S26
1 files changed, 19 insertions, 7 deletions
diff --git a/arch/s390/kernel/swsusp_asm64.S b/arch/s390/kernel/swsusp_asm64.S
index fe927d0bc20..7c8653e27db 100644
--- a/arch/s390/kernel/swsusp_asm64.S
+++ b/arch/s390/kernel/swsusp_asm64.S
@@ -43,7 +43,7 @@ swsusp_arch_suspend:
lghi %r1,0x1000
/* Save CPU address */
- stap __LC_CPU_ADDRESS(%r1)
+ stap __LC_CPU_ADDRESS(%r0)
/* Store registers */
mvc 0x318(4,%r1),__SF_EMPTY(%r15) /* move prefix to lowcore */
@@ -69,8 +69,21 @@ swsusp_arch_suspend:
stmg %r0,%r15,0x280(%r1) /* store general registers */
stpt 0x328(%r1) /* store timer */
+ stck __SF_EMPTY(%r15) /* store clock */
stckc 0x330(%r1) /* store clock comparator */
+ /* Update cputime accounting before going to sleep */
+ lg %r0,__LC_LAST_UPDATE_TIMER
+ slg %r0,0x328(%r1)
+ alg %r0,__LC_SYSTEM_TIMER
+ stg %r0,__LC_SYSTEM_TIMER
+ mvc __LC_LAST_UPDATE_TIMER(8),0x328(%r1)
+ lg %r0,__LC_LAST_UPDATE_CLOCK
+ slg %r0,__SF_EMPTY(%r15)
+ alg %r0,__LC_STEAL_TIMER
+ stg %r0,__LC_STEAL_TIMER
+ mvc __LC_LAST_UPDATE_CLOCK(8),__SF_EMPTY(%r15)
+
/* Activate DAT */
stosm __SF_EMPTY(%r15),0x04
@@ -159,8 +172,7 @@ pgm_check_entry:
larl %r1,.Lresume_cpu /* Resume CPU address: r2 */
stap 0(%r1)
llgh %r2,0(%r1)
- lghi %r3,0x1000
- llgh %r1,__LC_CPU_ADDRESS(%r3) /* Suspend CPU address: r1 */
+ llgh %r1,__LC_CPU_ADDRESS(%r0) /* Suspend CPU address: r1 */
cgr %r1,%r2
je restore_registers /* r1 = r2 -> nothing to do */
larl %r4,.Lrestart_suspend_psw /* Set new restart PSW */
@@ -200,8 +212,11 @@ restart_suspend:
restore_registers:
/* Restore registers */
- lghi %r13,0x1000 /* %r1 = pointer to save arae */
+ lghi %r13,0x1000 /* %r1 = pointer to save area */
+ /* Ignore time spent in suspended state. */
+ llgf %r1,0x318(%r13)
+ stck __LC_LAST_UPDATE_CLOCK(%r1)
spt 0x328(%r13) /* reprogram timer */
//sckc 0x330(%r13) /* set clock comparator */
@@ -229,9 +244,6 @@ restore_registers:
/* Load old stack */
lg %r15,0x2f8(%r13)
- /* Pointer to save area */
- lghi %r13,0x1000
-
/* Restore prefix register */
spx 0x318(%r13)