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authorLinus Torvalds <torvalds@linux-foundation.org>2011-05-11 18:59:45 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-11 18:59:45 -0700
commit409ab140e2ec662e473d4968e12b7ac97f5a5f4e (patch)
treeb6ddbb6ea24387b912706790cbd9302db01c3d5d /arch
parentce8453776d68982cfe93bcb28191af8ccad01f45 (diff)
parentbadb8bb983e9cf5b7a872e0a4f6ebeac2b1ce133 (diff)
downloadop-kernel-dev-409ab140e2ec662e473d4968e12b7ac97f5a5f4e.zip
op-kernel-dev-409ab140e2ec662e473d4968e12b7ac97f5a5f4e.tar.gz
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: [S390] fix alloc_pgste check in init_new_context [S390] oprofile: fix min/max interval query checks [S390] replace diag10() with diag10_range() function [S390] disassembler: handle b280/spp instruction [S390] kernel: Initialize register 14 when starting new CPU [S390] dasd: prevent IO error during reserve/release loop [S390] sclp/memory hotplug: fix initial usecount of increments
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/include/asm/diag.h17
-rw-r--r--arch/s390/include/asm/mmu_context.h2
-rw-r--r--arch/s390/kernel/diag.c21
-rw-r--r--arch/s390/kernel/dis.c1
-rw-r--r--arch/s390/kernel/entry.S2
-rw-r--r--arch/s390/kernel/entry64.S2
-rw-r--r--arch/s390/mm/cmm.c2
-rw-r--r--arch/s390/oprofile/hwsampler.c14
-rw-r--r--arch/s390/oprofile/hwsampler.h4
-rw-r--r--arch/s390/oprofile/init.c8
10 files changed, 28 insertions, 45 deletions
diff --git a/arch/s390/include/asm/diag.h b/arch/s390/include/asm/diag.h
index 72b2e2f..7e91c58 100644
--- a/arch/s390/include/asm/diag.h
+++ b/arch/s390/include/asm/diag.h
@@ -9,9 +9,22 @@
#define _ASM_S390_DIAG_H
/*
- * Diagnose 10: Release pages
+ * Diagnose 10: Release page range
*/
-extern void diag10(unsigned long addr);
+static inline void diag10_range(unsigned long start_pfn, unsigned long num_pfn)
+{
+ unsigned long start_addr, end_addr;
+
+ start_addr = start_pfn << PAGE_SHIFT;
+ end_addr = (start_pfn + num_pfn - 1) << PAGE_SHIFT;
+
+ asm volatile(
+ "0: diag %0,%1,0x10\n"
+ "1:\n"
+ EX_TABLE(0b, 1b)
+ EX_TABLE(1b, 1b)
+ : : "a" (start_addr), "a" (end_addr));
+}
/*
* Diagnose 14: Input spool file manipulation
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index a6f0e7c..8c277ca 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -23,7 +23,7 @@ static inline int init_new_context(struct task_struct *tsk,
#ifdef CONFIG_64BIT
mm->context.asce_bits |= _ASCE_TYPE_REGION3;
#endif
- if (current->mm->context.alloc_pgste) {
+ if (current->mm && current->mm->context.alloc_pgste) {
/*
* alloc_pgste indicates, that any NEW context will be created
* with extended page tables. The old context is unchanged. The
diff --git a/arch/s390/kernel/diag.c b/arch/s390/kernel/diag.c
index c032d11..8237fc0 100644
--- a/arch/s390/kernel/diag.c
+++ b/arch/s390/kernel/diag.c
@@ -9,27 +9,6 @@
#include <asm/diag.h>
/*
- * Diagnose 10: Release pages
- */
-void diag10(unsigned long addr)
-{
- if (addr >= 0x7ff00000)
- return;
- asm volatile(
-#ifdef CONFIG_64BIT
- " sam31\n"
- " diag %0,%0,0x10\n"
- "0: sam64\n"
-#else
- " diag %0,%0,0x10\n"
- "0:\n"
-#endif
- EX_TABLE(0b, 0b)
- : : "a" (addr));
-}
-EXPORT_SYMBOL(diag10);
-
-/*
* Diagnose 14: Input spool file manipulation
*/
int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode)
diff --git a/arch/s390/kernel/dis.c b/arch/s390/kernel/dis.c
index c83726c..3d4a78f 100644
--- a/arch/s390/kernel/dis.c
+++ b/arch/s390/kernel/dis.c
@@ -672,6 +672,7 @@ static struct insn opcode_b2[] = {
{ "rp", 0x77, INSTR_S_RD },
{ "stcke", 0x78, INSTR_S_RD },
{ "sacf", 0x79, INSTR_S_RD },
+ { "spp", 0x80, INSTR_S_RD },
{ "stsi", 0x7d, INSTR_S_RD },
{ "srnm", 0x99, INSTR_S_RD },
{ "stfpc", 0x9c, INSTR_S_RD },
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 648f642..1b67fc6 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -836,7 +836,7 @@ restart_base:
stosm __SF_EMPTY(%r15),0x04 # now we can turn dat on
basr %r14,0
l %r14,restart_addr-.(%r14)
- br %r14 # branch to start_secondary
+ basr %r14,%r14 # branch to start_secondary
restart_addr:
.long start_secondary
.align 8
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 9d3603d..9fd8645 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -841,7 +841,7 @@ restart_base:
mvc __LC_SYSTEM_TIMER(8),__TI_system_timer(%r1)
xc __LC_STEAL_TIMER(8),__LC_STEAL_TIMER
stosm __SF_EMPTY(%r15),0x04 # now we can turn dat on
- jg start_secondary
+ brasl %r14,start_secondary
.align 8
restart_vtime:
.long 0x7fffffff,0xffffffff
diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c
index c66ffd8..1f1dba9 100644
--- a/arch/s390/mm/cmm.c
+++ b/arch/s390/mm/cmm.c
@@ -91,7 +91,7 @@ static long cmm_alloc_pages(long nr, long *counter,
} else
free_page((unsigned long) npa);
}
- diag10(addr);
+ diag10_range(addr >> PAGE_SHIFT, 1);
pa->pages[pa->index++] = addr;
(*counter)++;
spin_unlock(&cmm_lock);
diff --git a/arch/s390/oprofile/hwsampler.c b/arch/s390/oprofile/hwsampler.c
index 4952872..33cbd37 100644
--- a/arch/s390/oprofile/hwsampler.c
+++ b/arch/s390/oprofile/hwsampler.c
@@ -1021,20 +1021,14 @@ deallocate_exit:
return rc;
}
-long hwsampler_query_min_interval(void)
+unsigned long hwsampler_query_min_interval(void)
{
- if (min_sampler_rate)
- return min_sampler_rate;
- else
- return -EINVAL;
+ return min_sampler_rate;
}
-long hwsampler_query_max_interval(void)
+unsigned long hwsampler_query_max_interval(void)
{
- if (max_sampler_rate)
- return max_sampler_rate;
- else
- return -EINVAL;
+ return max_sampler_rate;
}
unsigned long hwsampler_get_sample_overflow_count(unsigned int cpu)
diff --git a/arch/s390/oprofile/hwsampler.h b/arch/s390/oprofile/hwsampler.h
index 8c72b59..1912f3b 100644
--- a/arch/s390/oprofile/hwsampler.h
+++ b/arch/s390/oprofile/hwsampler.h
@@ -102,8 +102,8 @@ int hwsampler_setup(void);
int hwsampler_shutdown(void);
int hwsampler_allocate(unsigned long sdbt, unsigned long sdb);
int hwsampler_deallocate(void);
-long hwsampler_query_min_interval(void);
-long hwsampler_query_max_interval(void);
+unsigned long hwsampler_query_min_interval(void);
+unsigned long hwsampler_query_max_interval(void);
int hwsampler_start_all(unsigned long interval);
int hwsampler_stop_all(void);
int hwsampler_deactivate(unsigned int cpu);
diff --git a/arch/s390/oprofile/init.c b/arch/s390/oprofile/init.c
index c63d7e5..5995e9b 100644
--- a/arch/s390/oprofile/init.c
+++ b/arch/s390/oprofile/init.c
@@ -145,15 +145,11 @@ static int oprofile_hwsampler_init(struct oprofile_operations *ops)
* create hwsampler files only if hwsampler_setup() succeeds.
*/
oprofile_min_interval = hwsampler_query_min_interval();
- if (oprofile_min_interval < 0) {
- oprofile_min_interval = 0;
+ if (oprofile_min_interval == 0)
return -ENODEV;
- }
oprofile_max_interval = hwsampler_query_max_interval();
- if (oprofile_max_interval < 0) {
- oprofile_max_interval = 0;
+ if (oprofile_max_interval == 0)
return -ENODEV;
- }
if (oprofile_timer_init(ops))
return -ENODEV;
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