summaryrefslogtreecommitdiffstats
path: root/arch/xtensa
diff options
context:
space:
mode:
Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/Kconfig19
-rw-r--r--arch/xtensa/configs/s6105_defconfig1
-rw-r--r--arch/xtensa/include/asm/atomic.h10
-rw-r--r--arch/xtensa/include/asm/bitops.h14
-rw-r--r--arch/xtensa/include/asm/page.h4
-rw-r--r--arch/xtensa/include/asm/posix_types.h2
-rw-r--r--arch/xtensa/include/asm/ptrace.h1
-rw-r--r--arch/xtensa/include/asm/uaccess.h4
-rw-r--r--arch/xtensa/include/asm/unistd.h4
-rw-r--r--arch/xtensa/kernel/module.c43
-rw-r--r--arch/xtensa/kernel/process.c2
-rw-r--r--arch/xtensa/kernel/ptrace.c3
-rw-r--r--arch/xtensa/kernel/vmlinux.lds.S2
-rw-r--r--arch/xtensa/mm/mmu.c2
-rw-r--r--arch/xtensa/mm/pgtable.c72
-rw-r--r--arch/xtensa/variants/s6000/include/variant/dmac.h2
16 files changed, 18 insertions, 167 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 7c275f5d0df..c346ccdce0d 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -20,12 +20,6 @@ config XTENSA
config RWSEM_XCHGADD_ALGORITHM
def_bool y
-config GENERIC_FIND_NEXT_BIT
- def_bool y
-
-config GENERIC_FIND_BIT_LE
- def_bool y
-
config GENERIC_HWEIGHT
def_bool y
@@ -86,18 +80,7 @@ config XTENSA_UNALIGNED_USER
Say Y here to enable unaligned memory access in user space.
-config PREEMPT
- bool "Preemptible Kernel"
- help
- This option reduces the latency of the kernel when reacting to
- real-time or interactive events by allowing a low priority process to
- be preempted even if it is in kernel mode executing a system call.
- Unfortunately the kernel code has some race conditions if both
- CONFIG_SMP and CONFIG_PREEMPT are enabled, so this option is
- currently disabled if you are building an SMP kernel.
-
- Say Y here if you are building a kernel for a desktop, embedded
- or real-time system. Say N if you are unsure.
+source "kernel/Kconfig.preempt"
config MATH_EMULATION
bool "Math emulation"
diff --git a/arch/xtensa/configs/s6105_defconfig b/arch/xtensa/configs/s6105_defconfig
index 42b7feba71b..4891abbf16b 100644
--- a/arch/xtensa/configs/s6105_defconfig
+++ b/arch/xtensa/configs/s6105_defconfig
@@ -23,7 +23,6 @@ CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
CONFIG_EXPERIMENTAL=y
CONFIG_BROKEN_ON_SMP=y
-CONFIG_LOCK_KERNEL=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
diff --git a/arch/xtensa/include/asm/atomic.h b/arch/xtensa/include/asm/atomic.h
index a96a0619d0b..23592eff67a 100644
--- a/arch/xtensa/include/asm/atomic.h
+++ b/arch/xtensa/include/asm/atomic.h
@@ -225,15 +225,15 @@ static inline int atomic_sub_return(int i, atomic_t * v)
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
- * atomic_add_unless - add unless the number is a given value
+ * __atomic_add_unless - add unless the number is a given value
* @v: pointer of type atomic_t
* @a: the amount to add to v...
* @u: ...unless v is equal to u.
*
* Atomically adds @a to @v, so long as it was not @u.
- * Returns non-zero if @v was not @u, and zero otherwise.
+ * Returns the old value of @v.
*/
-static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
{
int c, old;
c = atomic_read(v);
@@ -245,10 +245,9 @@ static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
break;
c = old;
}
- return c != (u);
+ return c;
}
-#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
{
@@ -292,7 +291,6 @@ static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
#define smp_mb__before_atomic_inc() barrier()
#define smp_mb__after_atomic_inc() barrier()
-#include <asm-generic/atomic-long.h>
#endif /* __KERNEL__ */
#endif /* _XTENSA_ATOMIC_H */
diff --git a/arch/xtensa/include/asm/bitops.h b/arch/xtensa/include/asm/bitops.h
index c8fac8d8190..40aa7fe77f6 100644
--- a/arch/xtensa/include/asm/bitops.h
+++ b/arch/xtensa/include/asm/bitops.h
@@ -108,19 +108,7 @@ static inline unsigned long __fls(unsigned long word)
#include <asm-generic/bitops/find.h>
#include <asm-generic/bitops/le.h>
-#ifdef __XTENSA_EL__
-# define ext2_set_bit_atomic(lock,nr,addr) \
- test_and_set_bit((nr), (unsigned long*)(addr))
-# define ext2_clear_bit_atomic(lock,nr,addr) \
- test_and_clear_bit((nr), (unsigned long*)(addr))
-#elif defined(__XTENSA_EB__)
-# define ext2_set_bit_atomic(lock,nr,addr) \
- test_and_set_bit((nr) ^ 0x18, (unsigned long*)(addr))
-# define ext2_clear_bit_atomic(lock,nr,addr) \
- test_and_clear_bit((nr) ^ 0x18, (unsigned long*)(addr))
-#else
-# error processor byte order undefined!
-#endif
+#include <asm-generic/bitops/ext2-atomic-setbit.h>
#include <asm-generic/bitops/hweight.h>
#include <asm-generic/bitops/lock.h>
diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h
index 161bb89e98c..7a5591a71f8 100644
--- a/arch/xtensa/include/asm/page.h
+++ b/arch/xtensa/include/asm/page.h
@@ -171,10 +171,6 @@ extern void copy_user_page(void*, void*, unsigned long, struct page*);
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
-#ifdef CONFIG_MMU
-#define WANT_PAGE_VIRTUAL
-#endif
-
#endif /* __ASSEMBLY__ */
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
diff --git a/arch/xtensa/include/asm/posix_types.h b/arch/xtensa/include/asm/posix_types.h
index 43f9dd1126a..6b2190c3588 100644
--- a/arch/xtensa/include/asm/posix_types.h
+++ b/arch/xtensa/include/asm/posix_types.h
@@ -58,7 +58,7 @@ typedef struct {
#define __FD_SET(d, set) ((set)->fds_bits[__FDELT(d)] |= __FDMASK(d))
#define __FD_CLR(d, set) ((set)->fds_bits[__FDELT(d)] &= ~__FDMASK(d))
-#define __FD_ISSET(d, set) ((set)->fds_bits[__FDELT(d)] & __FDMASK(d))
+#define __FD_ISSET(d, set) (!!((set)->fds_bits[__FDELT(d)] & __FDMASK(d)))
#define __FD_ZERO(set) \
((void) memset ((void *) (set), 0, sizeof (__kernel_fd_set)))
diff --git a/arch/xtensa/include/asm/ptrace.h b/arch/xtensa/include/asm/ptrace.h
index 0d42c934b66..d85d38da8ee 100644
--- a/arch/xtensa/include/asm/ptrace.h
+++ b/arch/xtensa/include/asm/ptrace.h
@@ -120,7 +120,6 @@ struct pt_regs {
(task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1)
# define user_mode(regs) (((regs)->ps & 0x00000020)!=0)
# define instruction_pointer(regs) ((regs)->pc)
-extern void show_regs(struct pt_regs *);
# ifndef CONFIG_SMP
# define profile_pc(regs) instruction_pointer(regs)
diff --git a/arch/xtensa/include/asm/uaccess.h b/arch/xtensa/include/asm/uaccess.h
index 5b0c18c1cce..3fa526fd3c9 100644
--- a/arch/xtensa/include/asm/uaccess.h
+++ b/arch/xtensa/include/asm/uaccess.h
@@ -17,6 +17,8 @@
#define _XTENSA_UACCESS_H
#include <linux/errno.h>
+#include <linux/prefetch.h>
+#include <asm/types.h>
#define VERIFY_READ 0
#define VERIFY_WRITE 1
@@ -26,7 +28,6 @@
#include <asm/current.h>
#include <asm/asm-offsets.h>
#include <asm/processor.h>
-#include <asm/types.h>
/*
* These assembly macros mirror the C macros that follow below. They
@@ -157,7 +158,6 @@
#else /* __ASSEMBLY__ not defined */
#include <linux/sched.h>
-#include <asm/types.h>
/*
* The fs value determines whether argument validity checking should
diff --git a/arch/xtensa/include/asm/unistd.h b/arch/xtensa/include/asm/unistd.h
index 528042c2951..a6f934f37f1 100644
--- a/arch/xtensa/include/asm/unistd.h
+++ b/arch/xtensa/include/asm/unistd.h
@@ -683,8 +683,10 @@ __SYSCALL(305, sys_ni_syscall, 0)
__SYSCALL(306, sys_eventfd, 1)
#define __NR_recvmmsg 307
__SYSCALL(307, sys_recvmmsg, 5)
+#define __NR_setns 308
+__SYSCALL(308, sys_setns, 2)
-#define __NR_syscall_count 308
+#define __NR_syscall_count 309
/*
* sysxtensa syscall handler
diff --git a/arch/xtensa/kernel/module.c b/arch/xtensa/kernel/module.c
index c1accea8cb5..451dda928c9 100644
--- a/arch/xtensa/kernel/module.c
+++ b/arch/xtensa/kernel/module.c
@@ -24,26 +24,6 @@
#undef DEBUG_RELOCATE
-void *module_alloc(unsigned long size)
-{
- if (size == 0)
- return NULL;
- return vmalloc_exec(size);
-}
-
-void module_free(struct module *mod, void *module_region)
-{
- vfree(module_region);
-}
-
-int module_frob_arch_sections(Elf32_Ehdr *hdr,
- Elf32_Shdr *sechdrs,
- char *secstrings,
- struct module *mod)
-{
- return 0;
-}
-
static int
decode_calln_opcode (unsigned char *location)
{
@@ -66,18 +46,6 @@ decode_l32r_opcode (unsigned char *location)
#endif
}
-int apply_relocate(Elf32_Shdr *sechdrs,
- const char *strtab,
- unsigned int symindex,
- unsigned int relsec,
- struct module *mod)
-{
- printk(KERN_ERR "module %s: REL RELOCATION unsupported\n",
- mod->name);
- return -ENOEXEC;
-
-}
-
int apply_relocate_add(Elf32_Shdr *sechdrs,
const char *strtab,
unsigned int symindex,
@@ -222,14 +190,3 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
}
return 0;
}
-
-int module_finalize(const Elf_Ehdr *hdr,
- const Elf_Shdr *sechdrs,
- struct module *mod)
-{
- return 0;
-}
-
-void module_arch_cleanup(struct module *mod)
-{
-}
diff --git a/arch/xtensa/kernel/process.c b/arch/xtensa/kernel/process.c
index e3558b9a58b..47041e7c088 100644
--- a/arch/xtensa/kernel/process.c
+++ b/arch/xtensa/kernel/process.c
@@ -40,7 +40,7 @@
#include <asm/platform.h>
#include <asm/mmu.h>
#include <asm/irq.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
#include <asm/asm-offsets.h>
#include <asm/regs.h>
diff --git a/arch/xtensa/kernel/ptrace.c b/arch/xtensa/kernel/ptrace.c
index c72c9473ef9..a0d042aa296 100644
--- a/arch/xtensa/kernel/ptrace.c
+++ b/arch/xtensa/kernel/ptrace.c
@@ -147,6 +147,9 @@ int ptrace_setxregs(struct task_struct *child, void __user *uregs)
elf_xtregs_t *xtregs = uregs;
int ret = 0;
+ if (!access_ok(VERIFY_READ, uregs, sizeof(elf_xtregs_t)))
+ return -EFAULT;
+
#if XTENSA_HAVE_COPROCESSORS
/* Flush all coprocessors before we overwrite them. */
coprocessor_flush_all(ti);
diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S
index a2820065927..88ecea3facb 100644
--- a/arch/xtensa/kernel/vmlinux.lds.S
+++ b/arch/xtensa/kernel/vmlinux.lds.S
@@ -155,7 +155,7 @@ SECTIONS
INIT_RAM_FS
}
- PERCPU(XCHAL_ICACHE_LINESIZE, PAGE_SIZE)
+ PERCPU_SECTION(XCHAL_ICACHE_LINESIZE)
/* We need this dummy segment here */
diff --git a/arch/xtensa/mm/mmu.c b/arch/xtensa/mm/mmu.c
index 4bb91a970f1..ca81654f3ec 100644
--- a/arch/xtensa/mm/mmu.c
+++ b/arch/xtensa/mm/mmu.c
@@ -14,8 +14,6 @@
#include <asm/mmu_context.h>
#include <asm/page.h>
-DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
-
void __init paging_init(void)
{
memset(swapper_pg_dir, 0, PAGE_SIZE);
diff --git a/arch/xtensa/mm/pgtable.c b/arch/xtensa/mm/pgtable.c
deleted file mode 100644
index 69799273820..00000000000
--- a/arch/xtensa/mm/pgtable.c
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * arch/xtensa/mm/pgtable.c
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2001 - 2005 Tensilica Inc.
- *
- * Chris Zankel <chris@zankel.net>
- */
-
-#if (DCACHE_SIZE > PAGE_SIZE)
-
-pte_t* pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
-{
- pte_t *pte = NULL, *p;
- int color = ADDR_COLOR(address);
- int i;
-
- p = (pte_t*) __get_free_pages(GFP_KERNEL|__GFP_REPEAT, COLOR_ORDER);
-
- if (likely(p)) {
- split_page(virt_to_page(p), COLOR_ORDER);
-
- for (i = 0; i < COLOR_SIZE; i++) {
- if (ADDR_COLOR(p) == color)
- pte = p;
- else
- free_page(p);
- p += PTRS_PER_PTE;
- }
- clear_page(pte);
- }
- return pte;
-}
-
-#ifdef PROFILING
-
-int mask;
-int hit;
-int flush;
-
-#endif
-
-struct page* pte_alloc_one(struct mm_struct *mm, unsigned long address)
-{
- struct page *page = NULL, *p;
- int color = ADDR_COLOR(address);
-
- p = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER);
-
- if (likely(p)) {
- split_page(p, COLOR_ORDER);
-
- for (i = 0; i < PAGE_ORDER; i++) {
- if (PADDR_COLOR(page_address(p)) == color)
- page = p;
- else
- __free_page(p);
- p++;
- }
- clear_highpage(page);
- }
-
- return page;
-}
-
-#endif
-
-
-
diff --git a/arch/xtensa/variants/s6000/include/variant/dmac.h b/arch/xtensa/variants/s6000/include/variant/dmac.h
index 89ab9484fb7..e81735b2a20 100644
--- a/arch/xtensa/variants/s6000/include/variant/dmac.h
+++ b/arch/xtensa/variants/s6000/include/variant/dmac.h
@@ -357,7 +357,7 @@ static inline u32 s6dmac_channel_enabled(u32 dmac, int chan)
static inline void s6dmac_dp_setup_group(u32 dmac, int port,
int nrch, int frrep)
{
- const static u8 mask[4] = {0, 3, 1, 2};
+ static const u8 mask[4] = {0, 3, 1, 2};
BUG_ON(dmac != S6_REG_DPDMA);
if ((port < 0) || (port > 3) || (nrch < 1) || (nrch > 4))
return;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-27 15:43:54 +0000