Gerald Schaefer 59b6978745 [S390] spinlock: check virtual cpu running status ...

This patch introduces a new function that checks the running status
of a cpu in a hypervisor. This status is not virtualized, so the check
is only correct if running in an LPAR. On acquiring a spinlock, if the
cpu holding the lock is scheduled by the hypervisor, we do a busy wait
on the lock. If it is not scheduled, we yield over to that cpu.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2010-02-26 22:37:31 +01:00

..

delay.c

[S390] Provide arch specific mdelay implementation.

2009-10-06 10:35:08 +02:00

div64.c

[S390] __div64_31 broken for CONFIG_MARCH_G5

2009-03-18 13:28:12 +01:00

Makefile

[S390] uaccess: implement strict user copy checks

2010-02-26 22:37:29 +01:00

qrnnd.S

…

spinlock.c

[S390] spinlock: check virtual cpu running status

2010-02-26 22:37:31 +01:00

string.c

[S390] use compiler builtin versions of strlen/strcpy/strcat

2009-03-26 15:24:24 +01:00

uaccess_mvcos.c

[S390] Improve address space mode selection.

2009-12-07 12:51:33 +01:00

uaccess_pt.c

[S390] Use do_exception() in pagetable walk usercopy functions.

2009-12-07 12:51:34 +01:00

uaccess_std.c

[S390] Add EX_TABLE for addressing exception in usercopy functions.

2009-10-06 10:35:10 +02:00

uaccess.h

…

ucmpdi2.c

[S390] add __ucmpdi2() helper function

2009-07-07 16:37:53 +02:00

usercopy.c

[S390] uaccess: implement strict user copy checks

2010-02-26 22:37:29 +01:00