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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-23 02:15:32 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-23 02:15:32 +0100 |
commit | db1417967959569599da2a4bd0ffb93b17ad795f (patch) | |
tree | 08751414d5f4a9e264af924154ed3543a8e573a9 /arch/s390/kernel/switch_cpu.S | |
parent | security: optimize avc_audit() common path (diff) | |
parent | [S390] kernel: Pass correct stack for smp_call_ipl_cpu() (diff) | |
download | linux-db1417967959569599da2a4bd0ffb93b17ad795f.tar.xz linux-db1417967959569599da2a4bd0ffb93b17ad795f.zip |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 patches from Martin Schwidefsky:
"The biggest patch is the rework of the smp code, something I wanted to
do for some time. There are some patches for our various dump methods
and one new thing: z/VM LGR detection. LGR stands for linux-guest-
relocation and is the guest migration feature of z/VM. For debugging
purposes we keep a log of the systems where a specific guest has lived."
Fix up trivial conflict in arch/s390/kernel/smp.c due to the scheduler
cleanup having removed some code next to removed s390 code.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
[S390] kernel: Pass correct stack for smp_call_ipl_cpu()
[S390] Ensure that vmcore_info pointer is never accessed directly
[S390] dasd: prevent validate server for offline devices
[S390] Remove monolithic build option for zcrypt driver.
[S390] stack dump: fix indentation in output
[S390] kernel: Add OS info memory interface
[S390] Use block_sigmask()
[S390] kernel: Add z/VM LGR detection
[S390] irq: external interrupt code passing
[S390] irq: set __ARCH_IRQ_EXIT_IRQS_DISABLED
[S390] zfcpdump: Implement async sdias event processing
[S390] Use copy_to_absolute_zero() instead of "stura/sturg"
[S390] rework idle code
[S390] rework smp code
[S390] rename lowcore field
[S390] Fix gcc 4.6.0 compile warning
Diffstat (limited to 'arch/s390/kernel/switch_cpu.S')
-rw-r--r-- | arch/s390/kernel/switch_cpu.S | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/arch/s390/kernel/switch_cpu.S b/arch/s390/kernel/switch_cpu.S deleted file mode 100644 index bfe070bc7659..000000000000 --- a/arch/s390/kernel/switch_cpu.S +++ /dev/null @@ -1,58 +0,0 @@ -/* - * 31-bit switch cpu code - * - * Copyright IBM Corp. 2009 - * - */ - -#include <linux/linkage.h> -#include <asm/asm-offsets.h> -#include <asm/ptrace.h> - -# smp_switch_to_cpu switches to destination cpu and executes the passed function -# Parameter: %r2 - function to call -# %r3 - function parameter -# %r4 - stack poiner -# %r5 - current cpu -# %r6 - destination cpu - - .section .text -ENTRY(smp_switch_to_cpu) - stm %r6,%r15,__SF_GPRS(%r15) - lr %r1,%r15 - ahi %r15,-STACK_FRAME_OVERHEAD - st %r1,__SF_BACKCHAIN(%r15) - basr %r13,0 -0: la %r1,.gprregs_addr-0b(%r13) - l %r1,0(%r1) - stm %r0,%r15,0(%r1) -1: sigp %r0,%r6,__SIGP_RESTART /* start destination CPU */ - brc 2,1b /* busy, try again */ -2: sigp %r0,%r5,__SIGP_STOP /* stop current CPU */ - brc 2,2b /* busy, try again */ -3: j 3b - -ENTRY(smp_restart_cpu) - basr %r13,0 -0: la %r1,.gprregs_addr-0b(%r13) - l %r1,0(%r1) - lm %r0,%r15,0(%r1) -1: sigp %r0,%r5,__SIGP_SENSE /* Wait for calling CPU */ - brc 10,1b /* busy, accepted (status 0), running */ - tmll %r0,0x40 /* Test if calling CPU is stopped */ - jz 1b - ltr %r4,%r4 /* New stack ? */ - jz 1f - lr %r15,%r4 -1: lr %r14,%r2 /* r14: Function to call */ - lr %r2,%r3 /* r2 : Parameter for function*/ - basr %r14,%r14 /* Call function */ - -.gprregs_addr: - .long .gprregs - - .section .data,"aw",@progbits -.gprregs: - .rept 16 - .long 0 - .endr |