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-rw-r--r--arch/s390/mm/cmm.c110
-rw-r--r--arch/s390/mm/extmem.c19
-rw-r--r--arch/s390/mm/fault.c32
-rw-r--r--arch/s390/mm/init.c1
-rw-r--r--arch/s390/mm/maccess.c26
-rw-r--r--arch/s390/mm/page-states.c1
-rw-r--r--arch/s390/mm/pgtable.c2
-rw-r--r--arch/s390/mm/vmem.c12
8 files changed, 99 insertions, 104 deletions
diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c
index f16bd04e39e..eb6a2ef5f82 100644
--- a/arch/s390/mm/cmm.c
+++ b/arch/s390/mm/cmm.c
@@ -1,17 +1,16 @@
/*
- * arch/s390/mm/cmm.c
+ * Collaborative memory management interface.
*
- * S390 version
- * Copyright (C) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
+ * Copyright IBM Corp 2003,2010
+ * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
*
- * Collaborative memory management interface.
*/
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/module.h>
+#include <linux/gfp.h>
#include <linux/sched.h>
#include <linux/sysctl.h>
#include <linux/ctype.h>
@@ -19,9 +18,9 @@
#include <linux/kthread.h>
#include <linux/oom.h>
#include <linux/suspend.h>
+#include <linux/uaccess.h>
#include <asm/pgalloc.h>
-#include <asm/uaccess.h>
#include <asm/diag.h>
static char *sender = "VMRMSVM";
@@ -52,14 +51,14 @@ static struct cmm_page_array *cmm_timed_page_list;
static DEFINE_SPINLOCK(cmm_lock);
static struct task_struct *cmm_thread_ptr;
-static wait_queue_head_t cmm_thread_wait;
-static struct timer_list cmm_timer;
+static DECLARE_WAIT_QUEUE_HEAD(cmm_thread_wait);
+static DEFINE_TIMER(cmm_timer, NULL, 0, 0);
static void cmm_timer_fn(unsigned long);
static void cmm_set_timer(void);
-static long
-cmm_alloc_pages(long nr, long *counter, struct cmm_page_array **list)
+static long cmm_alloc_pages(long nr, long *counter,
+ struct cmm_page_array **list)
{
struct cmm_page_array *pa, *npa;
unsigned long addr;
@@ -98,8 +97,7 @@ cmm_alloc_pages(long nr, long *counter, struct cmm_page_array **list)
return nr;
}
-static long
-cmm_free_pages(long nr, long *counter, struct cmm_page_array **list)
+static long cmm_free_pages(long nr, long *counter, struct cmm_page_array **list)
{
struct cmm_page_array *pa;
unsigned long addr;
@@ -139,11 +137,10 @@ static int cmm_oom_notify(struct notifier_block *self,
}
static struct notifier_block cmm_oom_nb = {
- .notifier_call = cmm_oom_notify
+ .notifier_call = cmm_oom_notify,
};
-static int
-cmm_thread(void *dummy)
+static int cmm_thread(void *dummy)
{
int rc;
@@ -169,7 +166,7 @@ cmm_thread(void *dummy)
cmm_timed_pages_target = cmm_timed_pages;
} else if (cmm_timed_pages_target < cmm_timed_pages) {
cmm_free_pages(1, &cmm_timed_pages,
- &cmm_timed_page_list);
+ &cmm_timed_page_list);
}
if (cmm_timed_pages > 0 && !timer_pending(&cmm_timer))
cmm_set_timer();
@@ -177,14 +174,12 @@ cmm_thread(void *dummy)
return 0;
}
-static void
-cmm_kick_thread(void)
+static void cmm_kick_thread(void)
{
wake_up(&cmm_thread_wait);
}
-static void
-cmm_set_timer(void)
+static void cmm_set_timer(void)
{
if (cmm_timed_pages_target <= 0 || cmm_timeout_seconds <= 0) {
if (timer_pending(&cmm_timer))
@@ -201,8 +196,7 @@ cmm_set_timer(void)
add_timer(&cmm_timer);
}
-static void
-cmm_timer_fn(unsigned long ignored)
+static void cmm_timer_fn(unsigned long ignored)
{
long nr;
@@ -215,57 +209,49 @@ cmm_timer_fn(unsigned long ignored)
cmm_set_timer();
}
-void
-cmm_set_pages(long nr)
+static void cmm_set_pages(long nr)
{
cmm_pages_target = nr;
cmm_kick_thread();
}
-long
-cmm_get_pages(void)
+static long cmm_get_pages(void)
{
return cmm_pages;
}
-void
-cmm_add_timed_pages(long nr)
+static void cmm_add_timed_pages(long nr)
{
cmm_timed_pages_target += nr;
cmm_kick_thread();
}
-long
-cmm_get_timed_pages(void)
+static long cmm_get_timed_pages(void)
{
return cmm_timed_pages;
}
-void
-cmm_set_timeout(long nr, long seconds)
+static void cmm_set_timeout(long nr, long seconds)
{
cmm_timeout_pages = nr;
cmm_timeout_seconds = seconds;
cmm_set_timer();
}
-static int
-cmm_skip_blanks(char *cp, char **endp)
+static int cmm_skip_blanks(char *cp, char **endp)
{
char *str;
- for (str = cp; *str == ' ' || *str == '\t'; str++);
+ for (str = cp; *str == ' ' || *str == '\t'; str++)
+ ;
*endp = str;
return str != cp;
}
-#ifdef CONFIG_CMM_PROC
-
static struct ctl_table cmm_table[];
-static int
-cmm_pages_handler(ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+static int cmm_pages_handler(ctl_table *ctl, int write, void __user *buffer,
+ size_t *lenp, loff_t *ppos)
{
char buf[16], *p;
long nr;
@@ -304,9 +290,8 @@ cmm_pages_handler(ctl_table *ctl, int write,
return 0;
}
-static int
-cmm_timeout_handler(ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+static int cmm_timeout_handler(ctl_table *ctl, int write, void __user *buffer,
+ size_t *lenp, loff_t *ppos)
{
char buf[64], *p;
long nr, seconds;
@@ -369,12 +354,10 @@ static struct ctl_table cmm_dir_table[] = {
},
{ }
};
-#endif
#ifdef CONFIG_CMM_IUCV
#define SMSG_PREFIX "CMM"
-static void
-cmm_smsg_target(const char *from, char *msg)
+static void cmm_smsg_target(const char *from, char *msg)
{
long nr, seconds;
@@ -444,16 +427,13 @@ static struct notifier_block cmm_power_notifier = {
.notifier_call = cmm_power_event,
};
-static int
-cmm_init (void)
+static int cmm_init(void)
{
int rc = -ENOMEM;
-#ifdef CONFIG_CMM_PROC
cmm_sysctl_header = register_sysctl_table(cmm_dir_table);
if (!cmm_sysctl_header)
goto out_sysctl;
-#endif
#ifdef CONFIG_CMM_IUCV
rc = smsg_register_callback(SMSG_PREFIX, cmm_smsg_target);
if (rc < 0)
@@ -465,8 +445,6 @@ cmm_init (void)
rc = register_pm_notifier(&cmm_power_notifier);
if (rc)
goto out_pm;
- init_waitqueue_head(&cmm_thread_wait);
- init_timer(&cmm_timer);
cmm_thread_ptr = kthread_run(cmm_thread, NULL, "cmmthread");
rc = IS_ERR(cmm_thread_ptr) ? PTR_ERR(cmm_thread_ptr) : 0;
if (rc)
@@ -482,36 +460,26 @@ out_oom_notify:
smsg_unregister_callback(SMSG_PREFIX, cmm_smsg_target);
out_smsg:
#endif
-#ifdef CONFIG_CMM_PROC
unregister_sysctl_table(cmm_sysctl_header);
out_sysctl:
-#endif
+ del_timer_sync(&cmm_timer);
return rc;
}
+module_init(cmm_init);
-static void
-cmm_exit(void)
+static void cmm_exit(void)
{
- kthread_stop(cmm_thread_ptr);
- unregister_pm_notifier(&cmm_power_notifier);
- unregister_oom_notifier(&cmm_oom_nb);
- cmm_free_pages(cmm_pages, &cmm_pages, &cmm_page_list);
- cmm_free_pages(cmm_timed_pages, &cmm_timed_pages, &cmm_timed_page_list);
-#ifdef CONFIG_CMM_PROC
unregister_sysctl_table(cmm_sysctl_header);
-#endif
#ifdef CONFIG_CMM_IUCV
smsg_unregister_callback(SMSG_PREFIX, cmm_smsg_target);
#endif
+ unregister_pm_notifier(&cmm_power_notifier);
+ unregister_oom_notifier(&cmm_oom_nb);
+ kthread_stop(cmm_thread_ptr);
+ del_timer_sync(&cmm_timer);
+ cmm_free_pages(cmm_pages, &cmm_pages, &cmm_page_list);
+ cmm_free_pages(cmm_timed_pages, &cmm_timed_pages, &cmm_timed_page_list);
}
-
-module_init(cmm_init);
module_exit(cmm_exit);
-EXPORT_SYMBOL(cmm_set_pages);
-EXPORT_SYMBOL(cmm_get_pages);
-EXPORT_SYMBOL(cmm_add_timed_pages);
-EXPORT_SYMBOL(cmm_get_timed_pages);
-EXPORT_SYMBOL(cmm_set_timeout);
-
MODULE_LICENSE("GPL");
diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c
index 6409fd57eb0..3cc95dd0a3a 100644
--- a/arch/s390/mm/extmem.c
+++ b/arch/s390/mm/extmem.c
@@ -105,7 +105,7 @@ static int
dcss_set_subcodes(void)
{
#ifdef CONFIG_64BIT
- char *name = kmalloc(8 * sizeof(char), GFP_DMA);
+ char *name = kmalloc(8 * sizeof(char), GFP_KERNEL | GFP_DMA);
unsigned long rx, ry;
int rc;
@@ -252,12 +252,13 @@ dcss_diag_translate_rc (int vm_rc) {
static int
query_segment_type (struct dcss_segment *seg)
{
- struct qin64 *qin = kmalloc (sizeof(struct qin64), GFP_DMA);
- struct qout64 *qout = kmalloc (sizeof(struct qout64), GFP_DMA);
-
- int diag_cc, rc, i;
unsigned long dummy, vmrc;
+ int diag_cc, rc, i;
+ struct qout64 *qout;
+ struct qin64 *qin;
+ qin = kmalloc(sizeof(*qin), GFP_KERNEL | GFP_DMA);
+ qout = kmalloc(sizeof(*qout), GFP_KERNEL | GFP_DMA);
if ((qin == NULL) || (qout == NULL)) {
rc = -ENOMEM;
goto out_free;
@@ -286,7 +287,7 @@ query_segment_type (struct dcss_segment *seg)
copy data for the new format. */
if (segext_scode == DCSS_SEGEXT) {
struct qout64_old *qout_old;
- qout_old = kzalloc(sizeof(struct qout64_old), GFP_DMA);
+ qout_old = kzalloc(sizeof(*qout_old), GFP_KERNEL | GFP_DMA);
if (qout_old == NULL) {
rc = -ENOMEM;
goto out_free;
@@ -407,11 +408,11 @@ segment_overlaps_others (struct dcss_segment *seg)
static int
__segment_load (char *name, int do_nonshared, unsigned long *addr, unsigned long *end)
{
- struct dcss_segment *seg = kmalloc(sizeof(struct dcss_segment),
- GFP_DMA);
- int rc, diag_cc;
unsigned long start_addr, end_addr, dummy;
+ struct dcss_segment *seg;
+ int rc, diag_cc;
+ seg = kmalloc(sizeof(*seg), GFP_KERNEL | GFP_DMA);
if (seg == NULL) {
rc = -ENOMEM;
goto out;
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 3040d7c78fe..2505b2ea0ef 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -48,10 +48,6 @@
#define __PF_RES_FIELD 0x8000000000000000ULL
#endif /* CONFIG_64BIT */
-#ifdef CONFIG_SYSCTL
-extern int sysctl_userprocess_debug;
-#endif
-
#define VM_FAULT_BADCONTEXT 0x010000
#define VM_FAULT_BADMAP 0x020000
#define VM_FAULT_BADACCESS 0x040000
@@ -120,6 +116,22 @@ static inline int user_space_fault(unsigned long trans_exc_code)
return trans_exc_code != 3;
}
+static inline void report_user_fault(struct pt_regs *regs, long int_code,
+ int signr, unsigned long address)
+{
+ if ((task_pid_nr(current) > 1) && !show_unhandled_signals)
+ return;
+ if (!unhandled_signal(current, signr))
+ return;
+ if (!printk_ratelimit())
+ return;
+ printk("User process fault: interruption code 0x%lX ", int_code);
+ print_vma_addr(KERN_CONT "in ", regs->psw.addr & PSW_ADDR_INSN);
+ printk("\n");
+ printk("failing address: %lX\n", address);
+ show_regs(regs);
+}
+
/*
* Send SIGSEGV to task. This is an external routine
* to keep the stack usage of do_page_fault small.
@@ -133,17 +145,7 @@ static noinline void do_sigsegv(struct pt_regs *regs, long int_code,
address = trans_exc_code & __FAIL_ADDR_MASK;
current->thread.prot_addr = address;
current->thread.trap_no = int_code;
-#if defined(CONFIG_SYSCTL) || defined(CONFIG_PROCESS_DEBUG)
-#if defined(CONFIG_SYSCTL)
- if (sysctl_userprocess_debug)
-#endif
- {
- printk("User process fault: interruption code 0x%lX\n",
- int_code);
- printk("failing address: %lX\n", address);
- show_regs(regs);
- }
-#endif
+ report_user_fault(regs, int_code, SIGSEGV, address);
si.si_signo = SIGSEGV;
si.si_code = si_code;
si.si_addr = (void __user *) address;
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index d5865e4024c..acc91c75bc9 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -26,6 +26,7 @@
#include <linux/pfn.h>
#include <linux/poison.h>
#include <linux/initrd.h>
+#include <linux/gfp.h>
#include <asm/processor.h>
#include <asm/system.h>
#include <asm/uaccess.h>
diff --git a/arch/s390/mm/maccess.c b/arch/s390/mm/maccess.c
index 81756271dc4..a8c2af8c650 100644
--- a/arch/s390/mm/maccess.c
+++ b/arch/s390/mm/maccess.c
@@ -59,3 +59,29 @@ long probe_kernel_write(void *dst, void *src, size_t size)
}
return copied < 0 ? -EFAULT : 0;
}
+
+int memcpy_real(void *dest, void *src, size_t count)
+{
+ register unsigned long _dest asm("2") = (unsigned long) dest;
+ register unsigned long _len1 asm("3") = (unsigned long) count;
+ register unsigned long _src asm("4") = (unsigned long) src;
+ register unsigned long _len2 asm("5") = (unsigned long) count;
+ unsigned long flags;
+ int rc = -EFAULT;
+
+ if (!count)
+ return 0;
+ flags = __raw_local_irq_stnsm(0xf8UL);
+ asm volatile (
+ "0: mvcle %1,%2,0x0\n"
+ "1: jo 0b\n"
+ " lhi %0,0x0\n"
+ "2:\n"
+ EX_TABLE(1b,2b)
+ : "+d" (rc), "+d" (_dest), "+d" (_src), "+d" (_len1),
+ "+d" (_len2), "=m" (*((long *) dest))
+ : "m" (*((long *) src))
+ : "cc", "memory");
+ __raw_local_irq_ssm(flags);
+ return rc;
+}
diff --git a/arch/s390/mm/page-states.c b/arch/s390/mm/page-states.c
index 098923ae458..a90d45e9dfb 100644
--- a/arch/s390/mm/page-states.c
+++ b/arch/s390/mm/page-states.c
@@ -10,6 +10,7 @@
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/mm.h>
+#include <linux/gfp.h>
#include <linux/init.h>
#define ESSA_SET_STABLE 1
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index ad621e06ada..8d999249d35 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -6,11 +6,11 @@
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/errno.h>
+#include <linux/gfp.h>
#include <linux/mm.h>
#include <linux/swap.h>
#include <linux/smp.h>
#include <linux/highmem.h>
-#include <linux/slab.h>
#include <linux/pagemap.h>
#include <linux/spinlock.h>
#include <linux/module.h>
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index 300ab012b0f..90165e7ca04 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -11,6 +11,7 @@
#include <linux/module.h>
#include <linux/list.h>
#include <linux/hugetlb.h>
+#include <linux/slab.h>
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
#include <asm/setup.h>
@@ -70,12 +71,8 @@ static pte_t __ref *vmem_pte_alloc(void)
pte = alloc_bootmem(PTRS_PER_PTE * sizeof(pte_t));
if (!pte)
return NULL;
- if (MACHINE_HAS_HPAGE)
- clear_table((unsigned long *) pte, _PAGE_TYPE_EMPTY | _PAGE_CO,
- PTRS_PER_PTE * sizeof(pte_t));
- else
- clear_table((unsigned long *) pte, _PAGE_TYPE_EMPTY,
- PTRS_PER_PTE * sizeof(pte_t));
+ clear_table((unsigned long *) pte, _PAGE_TYPE_EMPTY,
+ PTRS_PER_PTE * sizeof(pte_t));
return pte;
}
@@ -116,8 +113,7 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
if (MACHINE_HAS_HPAGE && !(address & ~HPAGE_MASK) &&
(address + HPAGE_SIZE <= start + size) &&
(address >= HPAGE_SIZE)) {
- pte_val(pte) |= _SEGMENT_ENTRY_LARGE |
- _SEGMENT_ENTRY_CO;
+ pte_val(pte) |= _SEGMENT_ENTRY_LARGE;
pmd_val(*pm_dir) = pte_val(pte);
address += HPAGE_SIZE - PAGE_SIZE;
continue;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-26 12:01:17 +0000