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-rw-r--r--arch/s390/kernel/compat_linux.c20
-rw-r--r--arch/s390/kernel/compat_signal.c3
-rw-r--r--arch/s390/kernel/compat_wrapper.S13
-rw-r--r--arch/s390/kernel/machine_kexec.c5
-rw-r--r--arch/s390/kernel/process.c4
-rw-r--r--arch/s390/kernel/setup.c2
-rw-r--r--arch/s390/kernel/smp.c73
-rw-r--r--arch/s390/kernel/syscalls.S3
8 files changed, 91 insertions, 32 deletions
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index cc20f0e3a7d..cc058dc3bc8 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -905,6 +905,26 @@ asmlinkage long sys32_fstat64(unsigned long fd, struct stat64_emu31 __user * sta
return ret;
}
+asmlinkage long sys32_fstatat64(unsigned int dfd, char __user *filename,
+ struct stat64_emu31 __user* statbuf, int flag)
+{
+ struct kstat stat;
+ int error = -EINVAL;
+
+ if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
+ goto out;
+
+ if (flag & AT_SYMLINK_NOFOLLOW)
+ error = vfs_lstat_fd(dfd, filename, &stat);
+ else
+ error = vfs_stat_fd(dfd, filename, &stat);
+
+ if (!error)
+ error = cp_stat64(statbuf, &stat);
+out:
+ return error;
+}
+
/*
* Linux/i386 didn't use to be able to handle more than
* 4 system call parameters, so these system calls used a memory
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index ef706694a0c..5291b5f8788 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -195,9 +195,6 @@ sys32_sigaction(int sig, const struct old_sigaction32 __user *act,
return ret;
}
-int
-do_sigaction(int sig, const struct k_sigaction *act, struct k_sigaction *oact);
-
asmlinkage long
sys32_rt_sigaction(int sig, const struct sigaction32 __user *act,
struct sigaction32 __user *oact, size_t sigsetsize)
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 83b33fe1923..615964cca15 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1523,13 +1523,13 @@ compat_sys_futimesat_wrapper:
llgtr %r4,%r4 # struct timeval *
jg compat_sys_futimesat
- .globl compat_sys_newfstatat_wrapper
-compat_sys_newfstatat_wrapper:
+ .globl sys32_fstatat64_wrapper
+sys32_fstatat64_wrapper:
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # char *
- llgtr %r4,%r4 # struct stat *
+ llgtr %r4,%r4 # struct stat64 *
lgfr %r5,%r5 # int
- jg compat_sys_newfstatat
+ jg sys32_fstatat64
.globl sys_unlinkat_wrapper
sys_unlinkat_wrapper:
@@ -1602,3 +1602,8 @@ compat_sys_ppoll_wrapper:
llgtr %r5,%r5 # const sigset_t *
llgfr %r6,%r6 # size_t
jg compat_sys_ppoll
+
+ .globl sys_unshare_wrapper
+sys_unshare_wrapper:
+ llgfr %r2,%r2 # unsigned long
+ jg sys_unshare
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index f0ed5c642c7..bad81b5832d 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -12,15 +12,16 @@
* on the S390 architecture.
*/
-#include <asm/cio.h>
-#include <asm/setup.h>
#include <linux/device.h>
#include <linux/mm.h>
#include <linux/kexec.h>
#include <linux/delay.h>
+#include <asm/cio.h>
+#include <asm/setup.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
#include <asm/system.h>
+#include <asm/smp.h>
static void kexec_halt_all_cpus(void *);
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 008c74526fd..da6fbae8df9 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -128,8 +128,10 @@ void default_idle(void)
__ctl_set_bit(8, 15);
#ifdef CONFIG_HOTPLUG_CPU
- if (cpu_is_offline(cpu))
+ if (cpu_is_offline(cpu)) {
+ preempt_enable_no_resched();
cpu_die();
+ }
#endif
local_mcck_disable();
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index de878426747..24f62f16c0e 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -600,6 +600,7 @@ setup_arch(char **cmdline_p)
init_mm.brk = (unsigned long) &_end;
parse_cmdline_early(cmdline_p);
+ parse_early_param();
setup_memory();
setup_resources();
@@ -607,6 +608,7 @@ setup_arch(char **cmdline_p)
cpu_init();
__cpu_logical_map[0] = S390_lowcore.cpu_data.cpu_addr;
+ smp_setup_cpu_possible_map();
/*
* Create kernel page tables and switch to virtual addressing.
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index cbfcfd02a43..7dbe00c76c6 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -1,8 +1,7 @@
/*
* arch/s390/kernel/smp.c
*
- * S390 version
- * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Copyright (C) IBM Corp. 1999,2006
* Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
* Martin Schwidefsky (schwidefsky@de.ibm.com)
* Heiko Carstens (heiko.carstens@de.ibm.com)
@@ -41,8 +40,6 @@
#include <asm/cpcmd.h>
#include <asm/tlbflush.h>
-/* prototypes */
-
extern volatile int __cpu_logical_map[];
/*
@@ -51,13 +48,11 @@ extern volatile int __cpu_logical_map[];
struct _lowcore *lowcore_ptr[NR_CPUS];
-cpumask_t cpu_online_map;
-cpumask_t cpu_possible_map;
+cpumask_t cpu_online_map = CPU_MASK_NONE;
+cpumask_t cpu_possible_map = CPU_MASK_NONE;
static struct task_struct *current_set[NR_CPUS];
-EXPORT_SYMBOL(cpu_online_map);
-
/*
* Reboot, halt and power_off routines for SMP.
*/
@@ -490,10 +485,10 @@ void smp_ctl_clear_bit(int cr, int bit) {
* Lets check how many CPUs we have.
*/
-void
-__init smp_check_cpus(unsigned int max_cpus)
+static unsigned int
+__init smp_count_cpus(void)
{
- int cpu, num_cpus;
+ unsigned int cpu, num_cpus;
__u16 boot_cpu_addr;
/*
@@ -503,22 +498,20 @@ __init smp_check_cpus(unsigned int max_cpus)
boot_cpu_addr = S390_lowcore.cpu_data.cpu_addr;
current_thread_info()->cpu = 0;
num_cpus = 1;
- for (cpu = 0; cpu <= 65535 && num_cpus < max_cpus; cpu++) {
+ for (cpu = 0; cpu <= 65535; cpu++) {
if ((__u16) cpu == boot_cpu_addr)
continue;
- __cpu_logical_map[num_cpus] = (__u16) cpu;
- if (signal_processor(num_cpus, sigp_sense) ==
+ __cpu_logical_map[1] = (__u16) cpu;
+ if (signal_processor(1, sigp_sense) ==
sigp_not_operational)
continue;
- cpu_set(num_cpus, cpu_present_map);
num_cpus++;
}
- for (cpu = 1; cpu < max_cpus; cpu++)
- cpu_set(cpu, cpu_possible_map);
-
printk("Detected %d CPU's\n",(int) num_cpus);
printk("Boot cpu address %2X\n", boot_cpu_addr);
+
+ return num_cpus;
}
/*
@@ -679,6 +672,44 @@ __cpu_up(unsigned int cpu)
return 0;
}
+static unsigned int __initdata additional_cpus;
+static unsigned int __initdata possible_cpus;
+
+void __init smp_setup_cpu_possible_map(void)
+{
+ unsigned int phy_cpus, pos_cpus, cpu;
+
+ phy_cpus = smp_count_cpus();
+ pos_cpus = min(phy_cpus + additional_cpus, (unsigned int) NR_CPUS);
+
+ if (possible_cpus)
+ pos_cpus = min(possible_cpus, (unsigned int) NR_CPUS);
+
+ for (cpu = 0; cpu < pos_cpus; cpu++)
+ cpu_set(cpu, cpu_possible_map);
+
+ phy_cpus = min(phy_cpus, pos_cpus);
+
+ for (cpu = 0; cpu < phy_cpus; cpu++)
+ cpu_set(cpu, cpu_present_map);
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+
+static int __init setup_additional_cpus(char *s)
+{
+ additional_cpus = simple_strtoul(s, NULL, 0);
+ return 0;
+}
+early_param("additional_cpus", setup_additional_cpus);
+
+static int __init setup_possible_cpus(char *s)
+{
+ possible_cpus = simple_strtoul(s, NULL, 0);
+ return 0;
+}
+early_param("possible_cpus", setup_possible_cpus);
+
int
__cpu_disable(void)
{
@@ -747,6 +778,8 @@ cpu_die(void)
for(;;);
}
+#endif /* CONFIG_HOTPLUG_CPU */
+
/*
* Cycle through the processors and setup structures.
*/
@@ -760,7 +793,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
/* request the 0x1201 emergency signal external interrupt */
if (register_external_interrupt(0x1201, do_ext_call_interrupt) != 0)
panic("Couldn't request external interrupt 0x1201");
- smp_check_cpus(max_cpus);
memset(lowcore_ptr,0,sizeof(lowcore_ptr));
/*
* Initialize prefix pages and stacks for all possible cpus
@@ -809,8 +841,6 @@ void __devinit smp_prepare_boot_cpu(void)
BUG_ON(smp_processor_id() != 0);
cpu_set(0, cpu_online_map);
- cpu_set(0, cpu_present_map);
- cpu_set(0, cpu_possible_map);
S390_lowcore.percpu_offset = __per_cpu_offset[0];
current_set[0] = current;
}
@@ -849,6 +879,7 @@ static int __init topology_init(void)
subsys_initcall(topology_init);
+EXPORT_SYMBOL(cpu_online_map);
EXPORT_SYMBOL(cpu_possible_map);
EXPORT_SYMBOL(lowcore_ptr);
EXPORT_SYMBOL(smp_ctl_set_bit);
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index 3280345efac..7c88d85c359 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -301,7 +301,7 @@ SYSCALL(sys_mkdirat,sys_mkdirat,sys_mkdirat_wrapper)
SYSCALL(sys_mknodat,sys_mknodat,sys_mknodat_wrapper) /* 290 */
SYSCALL(sys_fchownat,sys_fchownat,sys_fchownat_wrapper)
SYSCALL(sys_futimesat,sys_futimesat,compat_sys_futimesat_wrapper)
-SYSCALL(sys_newfstatat,sys_newfstatat,compat_sys_newfstatat_wrapper)
+SYSCALL(sys_fstatat64,sys_newfstatat,sys32_fstatat64_wrapper)
SYSCALL(sys_unlinkat,sys_unlinkat,sys_unlinkat_wrapper)
SYSCALL(sys_renameat,sys_renameat,sys_renameat_wrapper) /* 295 */
SYSCALL(sys_linkat,sys_linkat,sys_linkat_wrapper)
@@ -311,3 +311,4 @@ SYSCALL(sys_fchmodat,sys_fchmodat,sys_fchmodat_wrapper)
SYSCALL(sys_faccessat,sys_faccessat,sys_faccessat_wrapper) /* 300 */
SYSCALL(sys_pselect6,sys_pselect6,compat_sys_pselect6_wrapper)
SYSCALL(sys_ppoll,sys_ppoll,compat_sys_ppoll_wrapper)
+SYSCALL(sys_unshare,sys_unshare,sys_unshare_wrapper)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 12:55:17 +0000