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-rw-r--r--arch/mips/kernel/Makefile1
-rw-r--r--arch/mips/kernel/cpu-probe.c83
-rw-r--r--arch/mips/kernel/entry.S7
-rw-r--r--arch/mips/kernel/ftrace.c5
-rw-r--r--arch/mips/kernel/ptrace.c43
-rw-r--r--arch/mips/kernel/scall32-o32.S5
-rw-r--r--arch/mips/kernel/scall64-64.S5
-rw-r--r--arch/mips/kernel/scall64-n32.S5
-rw-r--r--arch/mips/kernel/scall64-o32.S5
-rw-r--r--arch/mips/kernel/smtc.c2
-rw-r--r--arch/mips/kernel/syscall.c120
-rw-r--r--arch/mips/kernel/traps.c6
-rw-r--r--arch/mips/kernel/vmlinux.lds.S2
13 files changed, 134 insertions, 155 deletions
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index cedee2bcbd1..83bba332bbf 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -52,6 +52,7 @@ obj-$(CONFIG_CPU_TX39XX) += r2300_fpu.o r2300_switch.o
obj-$(CONFIG_CPU_TX49XX) += r4k_fpu.o r4k_switch.o
obj-$(CONFIG_CPU_VR41XX) += r4k_fpu.o r4k_switch.o
obj-$(CONFIG_CPU_CAVIUM_OCTEON) += octeon_switch.o
+obj-$(CONFIG_CPU_XLR) += r4k_fpu.o r4k_switch.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_SMP_UP) += smp-up.o
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index f65d4c8c65a..bb133d10b14 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -291,6 +291,12 @@ static inline int cpu_has_confreg(void)
#endif
}
+static inline void set_elf_platform(int cpu, const char *plat)
+{
+ if (cpu == 0)
+ __elf_platform = plat;
+}
+
/*
* Get the FPU Implementation/Revision.
*/
@@ -614,6 +620,16 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
case PRID_IMP_LOONGSON2:
c->cputype = CPU_LOONGSON2;
__cpu_name[cpu] = "ICT Loongson-2";
+
+ switch (c->processor_id & PRID_REV_MASK) {
+ case PRID_REV_LOONGSON2E:
+ set_elf_platform(cpu, "loongson2e");
+ break;
+ case PRID_REV_LOONGSON2F:
+ set_elf_platform(cpu, "loongson2f");
+ break;
+ }
+
c->isa_level = MIPS_CPU_ISA_III;
c->options = R4K_OPTS |
MIPS_CPU_FPU | MIPS_CPU_LLSC |
@@ -911,12 +927,14 @@ static inline void cpu_probe_broadcom(struct cpuinfo_mips *c, unsigned int cpu)
case PRID_IMP_BMIPS32_REV8:
c->cputype = CPU_BMIPS32;
__cpu_name[cpu] = "Broadcom BMIPS32";
+ set_elf_platform(cpu, "bmips32");
break;
case PRID_IMP_BMIPS3300:
case PRID_IMP_BMIPS3300_ALT:
case PRID_IMP_BMIPS3300_BUG:
c->cputype = CPU_BMIPS3300;
__cpu_name[cpu] = "Broadcom BMIPS3300";
+ set_elf_platform(cpu, "bmips3300");
break;
case PRID_IMP_BMIPS43XX: {
int rev = c->processor_id & 0xff;
@@ -925,15 +943,18 @@ static inline void cpu_probe_broadcom(struct cpuinfo_mips *c, unsigned int cpu)
rev <= PRID_REV_BMIPS4380_HI) {
c->cputype = CPU_BMIPS4380;
__cpu_name[cpu] = "Broadcom BMIPS4380";
+ set_elf_platform(cpu, "bmips4380");
} else {
c->cputype = CPU_BMIPS4350;
__cpu_name[cpu] = "Broadcom BMIPS4350";
+ set_elf_platform(cpu, "bmips4350");
}
break;
}
case PRID_IMP_BMIPS5000:
c->cputype = CPU_BMIPS5000;
__cpu_name[cpu] = "Broadcom BMIPS5000";
+ set_elf_platform(cpu, "bmips5000");
c->options |= MIPS_CPU_ULRI;
break;
}
@@ -956,14 +977,12 @@ static inline void cpu_probe_cavium(struct cpuinfo_mips *c, unsigned int cpu)
c->cputype = CPU_CAVIUM_OCTEON_PLUS;
__cpu_name[cpu] = "Cavium Octeon+";
platform:
- if (cpu == 0)
- __elf_platform = "octeon";
+ set_elf_platform(cpu, "octeon");
break;
case PRID_IMP_CAVIUM_CN63XX:
c->cputype = CPU_CAVIUM_OCTEON2;
__cpu_name[cpu] = "Cavium Octeon II";
- if (cpu == 0)
- __elf_platform = "octeon2";
+ set_elf_platform(cpu, "octeon2");
break;
default:
printk(KERN_INFO "Unknown Octeon chip!\n");
@@ -988,6 +1007,59 @@ static inline void cpu_probe_ingenic(struct cpuinfo_mips *c, unsigned int cpu)
}
}
+static inline void cpu_probe_netlogic(struct cpuinfo_mips *c, int cpu)
+{
+ decode_configs(c);
+
+ c->options = (MIPS_CPU_TLB |
+ MIPS_CPU_4KEX |
+ MIPS_CPU_COUNTER |
+ MIPS_CPU_DIVEC |
+ MIPS_CPU_WATCH |
+ MIPS_CPU_EJTAG |
+ MIPS_CPU_LLSC);
+
+ switch (c->processor_id & 0xff00) {
+ case PRID_IMP_NETLOGIC_XLR732:
+ case PRID_IMP_NETLOGIC_XLR716:
+ case PRID_IMP_NETLOGIC_XLR532:
+ case PRID_IMP_NETLOGIC_XLR308:
+ case PRID_IMP_NETLOGIC_XLR532C:
+ case PRID_IMP_NETLOGIC_XLR516C:
+ case PRID_IMP_NETLOGIC_XLR508C:
+ case PRID_IMP_NETLOGIC_XLR308C:
+ c->cputype = CPU_XLR;
+ __cpu_name[cpu] = "Netlogic XLR";
+ break;
+
+ case PRID_IMP_NETLOGIC_XLS608:
+ case PRID_IMP_NETLOGIC_XLS408:
+ case PRID_IMP_NETLOGIC_XLS404:
+ case PRID_IMP_NETLOGIC_XLS208:
+ case PRID_IMP_NETLOGIC_XLS204:
+ case PRID_IMP_NETLOGIC_XLS108:
+ case PRID_IMP_NETLOGIC_XLS104:
+ case PRID_IMP_NETLOGIC_XLS616B:
+ case PRID_IMP_NETLOGIC_XLS608B:
+ case PRID_IMP_NETLOGIC_XLS416B:
+ case PRID_IMP_NETLOGIC_XLS412B:
+ case PRID_IMP_NETLOGIC_XLS408B:
+ case PRID_IMP_NETLOGIC_XLS404B:
+ c->cputype = CPU_XLR;
+ __cpu_name[cpu] = "Netlogic XLS";
+ break;
+
+ default:
+ printk(KERN_INFO "Unknown Netlogic chip id [%02x]!\n",
+ c->processor_id);
+ c->cputype = CPU_XLR;
+ break;
+ }
+
+ c->isa_level = MIPS_CPU_ISA_M64R1;
+ c->tlbsize = ((read_c0_config1() >> 25) & 0x3f) + 1;
+}
+
#ifdef CONFIG_64BIT
/* For use by uaccess.h */
u64 __ua_limit;
@@ -1035,6 +1107,9 @@ __cpuinit void cpu_probe(void)
case PRID_COMP_INGENIC:
cpu_probe_ingenic(c, cpu);
break;
+ case PRID_COMP_NETLOGIC:
+ cpu_probe_netlogic(c, cpu);
+ break;
}
BUG_ON(!__cpu_name[cpu]);
diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S
index ffa331029e0..37acfa036d4 100644
--- a/arch/mips/kernel/entry.S
+++ b/arch/mips/kernel/entry.S
@@ -167,14 +167,13 @@ work_notifysig: # deal with pending signals and
FEXPORT(syscall_exit_work_partial)
SAVE_STATIC
syscall_exit_work:
- li t0, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
+ li t0, _TIF_WORK_SYSCALL_EXIT
and t0, a2 # a2 is preloaded with TI_FLAGS
beqz t0, work_pending # trace bit set?
- local_irq_enable # could let do_syscall_trace()
+ local_irq_enable # could let syscall_trace_leave()
# call schedule() instead
move a0, sp
- li a1, 1
- jal do_syscall_trace
+ jal syscall_trace_leave
b resume_userspace
#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_MIPS_MT)
diff --git a/arch/mips/kernel/ftrace.c b/arch/mips/kernel/ftrace.c
index 94ca2b018af..feb8021a305 100644
--- a/arch/mips/kernel/ftrace.c
+++ b/arch/mips/kernel/ftrace.c
@@ -23,6 +23,7 @@
#define JAL 0x0c000000 /* jump & link: ip --> ra, jump to target */
#define ADDR_MASK 0x03ffffff /* op_code|addr : 31...26|25 ....0 */
+#define JUMP_RANGE_MASK ((1UL << 28) - 1)
#define INSN_NOP 0x00000000 /* nop */
#define INSN_JAL(addr) \
@@ -44,12 +45,12 @@ static inline void ftrace_dyn_arch_init_insns(void)
/* jal (ftrace_caller + 8), jump over the first two instruction */
buf = (u32 *)&insn_jal_ftrace_caller;
- uasm_i_jal(&buf, (FTRACE_ADDR + 8));
+ uasm_i_jal(&buf, (FTRACE_ADDR + 8) & JUMP_RANGE_MASK);
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
/* j ftrace_graph_caller */
buf = (u32 *)&insn_j_ftrace_graph_caller;
- uasm_i_j(&buf, (unsigned long)ftrace_graph_caller);
+ uasm_i_j(&buf, (unsigned long)ftrace_graph_caller & JUMP_RANGE_MASK);
#endif
}
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index d21c388c011..4e6ea1ffad4 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -533,15 +533,10 @@ static inline int audit_arch(void)
* Notification of system call entry/exit
* - triggered by current->work.syscall_trace
*/
-asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
+asmlinkage void syscall_trace_enter(struct pt_regs *regs)
{
/* do the secure computing check first */
- if (!entryexit)
- secure_computing(regs->regs[2]);
-
- if (unlikely(current->audit_context) && entryexit)
- audit_syscall_exit(AUDITSC_RESULT(regs->regs[2]),
- regs->regs[2]);
+ secure_computing(regs->regs[2]);
if (!(current->ptrace & PT_PTRACED))
goto out;
@@ -565,8 +560,40 @@ asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
}
out:
- if (unlikely(current->audit_context) && !entryexit)
+ if (unlikely(current->audit_context))
audit_syscall_entry(audit_arch(), regs->regs[2],
regs->regs[4], regs->regs[5],
regs->regs[6], regs->regs[7]);
}
+
+/*
+ * Notification of system call entry/exit
+ * - triggered by current->work.syscall_trace
+ */
+asmlinkage void syscall_trace_leave(struct pt_regs *regs)
+{
+ if (unlikely(current->audit_context))
+ audit_syscall_exit(AUDITSC_RESULT(regs->regs[7]),
+ -regs->regs[2]);
+
+ if (!(current->ptrace & PT_PTRACED))
+ return;
+
+ if (!test_thread_flag(TIF_SYSCALL_TRACE))
+ return;
+
+ /* The 0x80 provides a way for the tracing parent to distinguish
+ between a syscall stop and SIGTRAP delivery */
+ ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) ?
+ 0x80 : 0));
+
+ /*
+ * this isn't the same as continuing with a signal, but it will do
+ * for normal use. strace only continues with a signal if the
+ * stopping signal is not SIGTRAP. -brl
+ */
+ if (current->exit_code) {
+ send_sig(current->exit_code, current, 1);
+ current->exit_code = 0;
+ }
+}
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index 7f5468b38d4..7a8e1dd7f6f 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -88,8 +88,7 @@ syscall_trace_entry:
SAVE_STATIC
move s0, t2
move a0, sp
- li a1, 0
- jal do_syscall_trace
+ jal syscall_trace_enter
move t0, s0
RESTORE_STATIC
@@ -565,7 +564,7 @@ einval: li v0, -ENOSYS
sys sys_ioprio_get 2 /* 4315 */
sys sys_utimensat 4
sys sys_signalfd 3
- sys sys_ni_syscall 0
+ sys sys_ni_syscall 0 /* was timerfd */
sys sys_eventfd 1
sys sys_fallocate 6 /* 4320 */
sys sys_timerfd_create 2
diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
index a2e1fcbc41d..2d31c83224f 100644
--- a/arch/mips/kernel/scall64-64.S
+++ b/arch/mips/kernel/scall64-64.S
@@ -91,8 +91,7 @@ syscall_trace_entry:
SAVE_STATIC
move s0, t2
move a0, sp
- li a1, 0
- jal do_syscall_trace
+ jal syscall_trace_enter
move t0, s0
RESTORE_STATIC
@@ -404,7 +403,7 @@ sys_call_table:
PTR sys_ioprio_get
PTR sys_utimensat /* 5275 */
PTR sys_signalfd
- PTR sys_ni_syscall
+ PTR sys_ni_syscall /* was timerfd */
PTR sys_eventfd
PTR sys_fallocate
PTR sys_timerfd_create /* 5280 */
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index b2c7624995b..38a0503b9a4 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -89,8 +89,7 @@ n32_syscall_trace_entry:
SAVE_STATIC
move s0, t2
move a0, sp
- li a1, 0
- jal do_syscall_trace
+ jal syscall_trace_enter
move t0, s0
RESTORE_STATIC
@@ -403,7 +402,7 @@ EXPORT(sysn32_call_table)
PTR sys_ioprio_get
PTR compat_sys_utimensat
PTR compat_sys_signalfd /* 6280 */
- PTR sys_ni_syscall
+ PTR sys_ni_syscall /* was timerfd */
PTR sys_eventfd
PTR sys_fallocate
PTR sys_timerfd_create
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 049a9c8c49a..91ea5e4041d 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -123,8 +123,7 @@ trace_a_syscall:
move s0, t2 # Save syscall pointer
move a0, sp
- li a1, 0
- jal do_syscall_trace
+ jal syscall_trace_enter
move t0, s0
RESTORE_STATIC
@@ -522,7 +521,7 @@ sys_call_table:
PTR sys_ioprio_get /* 4315 */
PTR compat_sys_utimensat
PTR compat_sys_signalfd
- PTR sys_ni_syscall
+ PTR sys_ni_syscall /* was timerfd */
PTR sys_eventfd
PTR sys32_fallocate /* 4320 */
PTR sys_timerfd_create
diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
index 5a88cc4ccd5..cedac463374 100644
--- a/arch/mips/kernel/smtc.c
+++ b/arch/mips/kernel/smtc.c
@@ -929,7 +929,7 @@ static void post_direct_ipi(int cpu, struct smtc_ipi *pipi)
static void ipi_resched_interrupt(void)
{
- /* Return from interrupt should be enough to cause scheduler check */
+ scheduler_ipi();
}
static void ipi_call_interrupt(void)
diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c
index 58beabf50b3..d02765708dd 100644
--- a/arch/mips/kernel/syscall.c
+++ b/arch/mips/kernel/syscall.c
@@ -10,12 +10,9 @@
#include <linux/capability.h>
#include <linux/errno.h>
#include <linux/linkage.h>
-#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/smp.h>
-#include <linux/mman.h>
#include <linux/ptrace.h>
-#include <linux/sched.h>
#include <linux/string.h>
#include <linux/syscalls.h>
#include <linux/file.h>
@@ -25,11 +22,9 @@
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/compiler.h>
-#include <linux/module.h>
#include <linux/ipc.h>
#include <linux/uaccess.h>
#include <linux/slab.h>
-#include <linux/random.h>
#include <linux/elf.h>
#include <asm/asm.h>
@@ -66,121 +61,6 @@ out:
return res;
}
-unsigned long shm_align_mask = PAGE_SIZE - 1; /* Sane caches */
-
-EXPORT_SYMBOL(shm_align_mask);
-
-#define COLOUR_ALIGN(addr,pgoff) \
- ((((addr) + shm_align_mask) & ~shm_align_mask) + \
- (((pgoff) << PAGE_SHIFT) & shm_align_mask))
-
-unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
- unsigned long len, unsigned long pgoff, unsigned long flags)
-{
- struct vm_area_struct * vmm;
- int do_color_align;
- unsigned long task_size;
-
-#ifdef CONFIG_32BIT
- task_size = TASK_SIZE;
-#else /* Must be CONFIG_64BIT*/
- task_size = test_thread_flag(TIF_32BIT_ADDR) ? TASK_SIZE32 : TASK_SIZE;
-#endif
-
- if (len > task_size)
- return -ENOMEM;
-
- if (flags & MAP_FIXED) {
- /* Even MAP_FIXED mappings must reside within task_size. */
- if (task_size - len < addr)
- return -EINVAL;
-
- /*
- * We do not accept a shared mapping if it would violate
- * cache aliasing constraints.
- */
- if ((flags & MAP_SHARED) &&
- ((addr - (pgoff << PAGE_SHIFT)) & shm_align_mask))
- return -EINVAL;
- return addr;
- }
-
- do_color_align = 0;
- if (filp || (flags & MAP_SHARED))
- do_color_align = 1;
- if (addr) {
- if (do_color_align)
- addr = COLOUR_ALIGN(addr, pgoff);
- else
- addr = PAGE_ALIGN(addr);
- vmm = find_vma(current->mm, addr);
- if (task_size - len >= addr &&
- (!vmm || addr + len <= vmm->vm_start))
- return addr;
- }
- addr = current->mm->mmap_base;
- if (do_color_align)
- addr = COLOUR_ALIGN(addr, pgoff);
- else
- addr = PAGE_ALIGN(addr);
-
- for (vmm = find_vma(current->mm, addr); ; vmm = vmm->vm_next) {
- /* At this point: (!vmm || addr < vmm->vm_end). */
- if (task_size - len < addr)
- return -ENOMEM;
- if (!vmm || addr + len <= vmm->vm_start)
- return addr;
- addr = vmm->vm_end;
- if (do_color_align)
- addr = COLOUR_ALIGN(addr, pgoff);
- }
-}
-
-void arch_pick_mmap_layout(struct mm_struct *mm)
-{
- unsigned long random_factor = 0UL;
-
- if (current->flags & PF_RANDOMIZE) {
- random_factor = get_random_int();
- random_factor = random_factor << PAGE_SHIFT;
- if (TASK_IS_32BIT_ADDR)
- random_factor &= 0xfffffful;
- else
- random_factor &= 0xffffffful;
- }
-
- mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
- mm->get_unmapped_area = arch_get_unmapped_area;
- mm->unmap_area = arch_unmap_area;
-}
-
-static inline unsigned long brk_rnd(void)
-{
- unsigned long rnd = get_random_int();
-
- rnd = rnd << PAGE_SHIFT;
- /* 8MB for 32bit, 256MB for 64bit */
- if (TASK_IS_32BIT_ADDR)
- rnd = rnd & 0x7ffffful;
- else
- rnd = rnd & 0xffffffful;
-
- return rnd;
-}
-
-unsigned long arch_randomize_brk(struct mm_struct *mm)
-{
- unsigned long base = mm->brk;
- unsigned long ret;
-
- ret = PAGE_ALIGN(base + brk_rnd());
-
- if (ret < mm->brk)
- return mm->brk;
-
- return ret;
-}
-
SYSCALL_DEFINE6(mips_mmap, unsigned long, addr, unsigned long, len,
unsigned long, prot, unsigned long, flags, unsigned long,
fd, off_t, offset)
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 71350f7f2d8..e9b3af27d84 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -374,7 +374,8 @@ void __noreturn die(const char *str, struct pt_regs *regs)
unsigned long dvpret = dvpe();
#endif /* CONFIG_MIPS_MT_SMTC */
- notify_die(DIE_OOPS, str, regs, 0, regs_to_trapnr(regs), SIGSEGV);
+ if (notify_die(DIE_OOPS, str, regs, 0, regs_to_trapnr(regs), SIGSEGV) == NOTIFY_STOP)
+ sig = 0;
console_verbose();
spin_lock_irq(&die_lock);
@@ -383,9 +384,6 @@ void __noreturn die(const char *str, struct pt_regs *regs)
mips_mt_regdump(dvpret);
#endif /* CONFIG_MIPS_MT_SMTC */
- if (notify_die(DIE_OOPS, str, regs, 0, regs_to_trapnr(regs), SIGSEGV) == NOTIFY_STOP)
- sig = 0;
-
printk("%s[#%d]:\n", str, ++die_counter);
show_registers(regs);
add_taint(TAINT_DIE);
diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S
index 832afbb8758..cd2ca544454 100644
--- a/arch/mips/kernel/vmlinux.lds.S
+++ b/arch/mips/kernel/vmlinux.lds.S
@@ -68,12 +68,14 @@ SECTIONS
RODATA
/* writeable */
+ _sdata = .; /* Start of data section */
.data : { /* Data */
. = . + DATAOFFSET; /* for CONFIG_MAPPED_KERNEL */
INIT_TASK_DATA(PAGE_SIZE)
NOSAVE_DATA
CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
+ READ_MOSTLY_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
DATA_DATA
CONSTRUCTORS
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-27 11:05:52 +0000