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android_kernel_samsung_msm8976/arch/sparc/kernel/sparc_ksyms.c
Ingo Molnar fb1c8f93d8 [PATCH] spinlock consolidation 
This patch (written by me and also containing many suggestions of Arjan van
de Ven) does a major cleanup of the spinlock code.  It does the following
things:

 - consolidates and enhances the spinlock/rwlock debugging code

 - simplifies the asm/spinlock.h files

 - encapsulates the raw spinlock type and moves generic spinlock
   features (such as ->break_lock) into the generic code.

 - cleans up the spinlock code hierarchy to get rid of the spaghetti.

Most notably there's now only a single variant of the debugging code,
located in lib/spinlock_debug.c.  (previously we had one SMP debugging
variant per architecture, plus a separate generic one for UP builds)

Also, i've enhanced the rwlock debugging facility, it will now track
write-owners.  There is new spinlock-owner/CPU-tracking on SMP builds too.
All locks have lockup detection now, which will work for both soft and hard
spin/rwlock lockups.

The arch-level include files now only contain the minimally necessary
subset of the spinlock code - all the rest that can be generalized now
lives in the generic headers:

 include/asm-i386/spinlock_types.h       |   16
 include/asm-x86_64/spinlock_types.h     |   16

I have also split up the various spinlock variants into separate files,
making it easier to see which does what. The new layout is:

   SMP                         |  UP
   ----------------------------|-----------------------------------
   asm/spinlock_types_smp.h    |  linux/spinlock_types_up.h
   linux/spinlock_types.h      |  linux/spinlock_types.h
   asm/spinlock_smp.h          |  linux/spinlock_up.h
   linux/spinlock_api_smp.h    |  linux/spinlock_api_up.h
   linux/spinlock.h            |  linux/spinlock.h

/*
 * here's the role of the various spinlock/rwlock related include files:
 *
 * on SMP builds:
 *
 *  asm/spinlock_types.h: contains the raw_spinlock_t/raw_rwlock_t and the
 *                        initializers
 *
 *  linux/spinlock_types.h:
 *                        defines the generic type and initializers
 *
 *  asm/spinlock.h:       contains the __raw_spin_*()/etc. lowlevel
 *                        implementations, mostly inline assembly code
 *
 *   (also included on UP-debug builds:)
 *
 *  linux/spinlock_api_smp.h:
 *                        contains the prototypes for the _spin_*() APIs.
 *
 *  linux/spinlock.h:     builds the final spin_*() APIs.
 *
 * on UP builds:
 *
 *  linux/spinlock_type_up.h:
 *                        contains the generic, simplified UP spinlock type.
 *                        (which is an empty structure on non-debug builds)
 *
 *  linux/spinlock_types.h:
 *                        defines the generic type and initializers
 *
 *  linux/spinlock_up.h:
 *                        contains the __raw_spin_*()/etc. version of UP
 *                        builds. (which are NOPs on non-debug, non-preempt
 *                        builds)
 *
 *   (included on UP-non-debug builds:)
 *
 *  linux/spinlock_api_up.h:
 *                        builds the _spin_*() APIs.
 *
 *  linux/spinlock.h:     builds the final spin_*() APIs.
 */

All SMP and UP architectures are converted by this patch.

arm, i386, ia64, ppc, ppc64, s390/s390x, x64 was build-tested via
crosscompilers.  m32r, mips, sh, sparc, have not been tested yet, but should
be mostly fine.

From: Grant Grundler <grundler@parisc-linux.org>

  Booted and lightly tested on a500-44 (64-bit, SMP kernel, dual CPU).
  Builds 32-bit SMP kernel (not booted or tested).  I did not try to build
  non-SMP kernels.  That should be trivial to fix up later if necessary.

  I converted bit ops atomic_hash lock to raw_spinlock_t.  Doing so avoids
  some ugly nesting of linux/*.h and asm/*.h files.  Those particular locks
  are well tested and contained entirely inside arch specific code.  I do NOT
  expect any new issues to arise with them.

 If someone does ever need to use debug/metrics with them, then they will
  need to unravel this hairball between spinlocks, atomic ops, and bit ops
  that exist only because parisc has exactly one atomic instruction: LDCW
  (load and clear word).

From: "Luck, Tony" <tony.luck@intel.com>

   ia64 fix

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjanv@infradead.org>
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Cc: Matthew Wilcox <willy@debian.org>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Mikael Pettersson <mikpe@csd.uu.se>
Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-10 10:06:21 -07:00

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/* $Id: sparc_ksyms.c,v 1.107 2001/07/17 16:17:33 anton Exp $
* arch/sparc/kernel/ksyms.c: Sparc specific ksyms support.
*
* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
*/
/* Tell string.h we don't want memcpy etc. as cpp defines */
#define EXPORT_SYMTAB_STROPS
#define PROMLIB_INTERNAL
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/in6.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/syscalls.h>
#ifdef CONFIG_PCI
#include <linux/pci.h>
#endif
#include <linux/pm.h>
#ifdef CONFIG_HIGHMEM
#include <linux/highmem.h>
#endif
#include <asm/oplib.h>
#include <asm/delay.h>
#include <asm/system.h>
#include <asm/auxio.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/idprom.h>
#include <asm/svr4.h>
#include <asm/head.h>
#include <asm/smp.h>
#include <asm/mostek.h>
#include <asm/ptrace.h>
#include <asm/user.h>
#include <asm/uaccess.h>
#include <asm/checksum.h>
#ifdef CONFIG_SBUS
#include <asm/sbus.h>
#include <asm/dma.h>
#endif
#ifdef CONFIG_PCI
#include <asm/ebus.h>
#endif
#include <asm/a.out.h>
#include <asm/io-unit.h>
#include <asm/bug.h>
extern spinlock_t rtc_lock;
struct poll {
int fd;
short events;
short revents;
};
extern int svr4_getcontext (svr4_ucontext_t *, struct pt_regs *);
extern int svr4_setcontext (svr4_ucontext_t *, struct pt_regs *);
void _sigpause_common (unsigned int set, struct pt_regs *);
extern void (*__copy_1page)(void *, const void *);
extern void __memmove(void *, const void *, __kernel_size_t);
extern void (*bzero_1page)(void *);
extern void *__bzero(void *, size_t);
extern void *__memscan_zero(void *, size_t);
extern void *__memscan_generic(void *, int, size_t);
extern int __memcmp(const void *, const void *, __kernel_size_t);
extern int __strncmp(const char *, const char *, __kernel_size_t);
extern int __ashrdi3(int, int);
extern int __ashldi3(int, int);
extern int __lshrdi3(int, int);
extern int __muldi3(int, int);
extern int __divdi3(int, int);
extern void dump_thread(struct pt_regs *, struct user *);
/* Private functions with odd calling conventions. */
extern void ___atomic24_add(void);
extern void ___atomic24_sub(void);
extern void ___set_bit(void);
extern void ___clear_bit(void);
extern void ___change_bit(void);
extern void ___rw_read_enter(void);
extern void ___rw_read_exit(void);
extern void ___rw_write_enter(void);
/* Alias functions whose names begin with "." and export the aliases.
* The module references will be fixed up by module_frob_arch_sections.
*/
#define DOT_ALIAS2(__ret, __x, __arg1, __arg2) \
extern __ret __x(__arg1, __arg2); \
asm(".weak " #__x);\
asm(#__x "=." #__x);
DOT_ALIAS2(int, div, int, int)
DOT_ALIAS2(int, mul, int, int)
DOT_ALIAS2(int, rem, int, int)
DOT_ALIAS2(unsigned, udiv, unsigned, unsigned)
DOT_ALIAS2(unsigned, umul, unsigned, unsigned)
DOT_ALIAS2(unsigned, urem, unsigned, unsigned)
#undef DOT_ALIAS2
/* used by various drivers */
EXPORT_SYMBOL(sparc_cpu_model);
EXPORT_SYMBOL(kernel_thread);
#ifdef CONFIG_SMP
// XXX find what uses (or used) these.
EXPORT_SYMBOL(___rw_read_enter);
EXPORT_SYMBOL(___rw_read_exit);
EXPORT_SYMBOL(___rw_write_enter);
#endif
/* semaphores */
EXPORT_SYMBOL(__up);
EXPORT_SYMBOL(__down);
EXPORT_SYMBOL(__down_trylock);
EXPORT_SYMBOL(__down_interruptible);
EXPORT_SYMBOL(sparc_valid_addr_bitmap);
EXPORT_SYMBOL(phys_base);
EXPORT_SYMBOL(pfn_base);
/* Atomic operations. */
EXPORT_SYMBOL(___atomic24_add);
EXPORT_SYMBOL(___atomic24_sub);
/* Bit operations. */
EXPORT_SYMBOL(___set_bit);
EXPORT_SYMBOL(___clear_bit);
EXPORT_SYMBOL(___change_bit);
/* Per-CPU information table */
EXPORT_PER_CPU_SYMBOL(__cpu_data);
#ifdef CONFIG_SMP
/* IRQ implementation. */
EXPORT_SYMBOL(synchronize_irq);
/* Misc SMP information */
EXPORT_SYMBOL(__cpu_number_map);
EXPORT_SYMBOL(__cpu_logical_map);
/* CPU online map and active count. */
EXPORT_SYMBOL(cpu_online_map);
EXPORT_SYMBOL(phys_cpu_present_map);
#endif
EXPORT_SYMBOL(__udelay);
EXPORT_SYMBOL(__ndelay);
EXPORT_SYMBOL(rtc_lock);
EXPORT_SYMBOL(mostek_lock);
EXPORT_SYMBOL(mstk48t02_regs);
#ifdef CONFIG_SUN_AUXIO
EXPORT_SYMBOL(set_auxio);
EXPORT_SYMBOL(get_auxio);
#endif
EXPORT_SYMBOL(request_fast_irq);
EXPORT_SYMBOL(io_remap_pfn_range);
/* P3: iounit_xxx may be needed, sun4d users */
/* EXPORT_SYMBOL(iounit_map_dma_init); */
/* EXPORT_SYMBOL(iounit_map_dma_page); */
#ifndef CONFIG_SMP
EXPORT_SYMBOL(BTFIXUP_CALL(___xchg32));
#else
EXPORT_SYMBOL(BTFIXUP_CALL(__hard_smp_processor_id));
#endif
EXPORT_SYMBOL(BTFIXUP_CALL(enable_irq));
EXPORT_SYMBOL(BTFIXUP_CALL(disable_irq));
EXPORT_SYMBOL(BTFIXUP_CALL(__irq_itoa));
EXPORT_SYMBOL(BTFIXUP_CALL(mmu_unlockarea));
EXPORT_SYMBOL(BTFIXUP_CALL(mmu_lockarea));
EXPORT_SYMBOL(BTFIXUP_CALL(mmu_get_scsi_sgl));
EXPORT_SYMBOL(BTFIXUP_CALL(mmu_get_scsi_one));
EXPORT_SYMBOL(BTFIXUP_CALL(mmu_release_scsi_sgl));
EXPORT_SYMBOL(BTFIXUP_CALL(mmu_release_scsi_one));
#ifdef CONFIG_SBUS
EXPORT_SYMBOL(sbus_root);
EXPORT_SYMBOL(dma_chain);
EXPORT_SYMBOL(sbus_set_sbus64);
EXPORT_SYMBOL(sbus_alloc_consistent);
EXPORT_SYMBOL(sbus_free_consistent);
EXPORT_SYMBOL(sbus_map_single);
EXPORT_SYMBOL(sbus_unmap_single);
EXPORT_SYMBOL(sbus_map_sg);
EXPORT_SYMBOL(sbus_unmap_sg);
EXPORT_SYMBOL(sbus_dma_sync_single_for_cpu);
EXPORT_SYMBOL(sbus_dma_sync_single_for_device);
EXPORT_SYMBOL(sbus_dma_sync_sg_for_cpu);
EXPORT_SYMBOL(sbus_dma_sync_sg_for_device);
EXPORT_SYMBOL(sbus_iounmap);
EXPORT_SYMBOL(sbus_ioremap);
#endif
#ifdef CONFIG_PCI
EXPORT_SYMBOL(ebus_chain);
EXPORT_SYMBOL(insb);
EXPORT_SYMBOL(outsb);
EXPORT_SYMBOL(insw);
EXPORT_SYMBOL(outsw);
EXPORT_SYMBOL(insl);
EXPORT_SYMBOL(outsl);
EXPORT_SYMBOL(pci_alloc_consistent);
EXPORT_SYMBOL(pci_free_consistent);
EXPORT_SYMBOL(pci_map_single);
EXPORT_SYMBOL(pci_unmap_single);
EXPORT_SYMBOL(pci_dma_sync_single_for_cpu);
EXPORT_SYMBOL(pci_dma_sync_single_for_device);
EXPORT_SYMBOL(pci_dma_sync_sg_for_cpu);
EXPORT_SYMBOL(pci_dma_sync_sg_for_device);
EXPORT_SYMBOL(pci_map_sg);
EXPORT_SYMBOL(pci_unmap_sg);
EXPORT_SYMBOL(pci_map_page);
EXPORT_SYMBOL(pci_unmap_page);
/* Actually, ioremap/iounmap are not PCI specific. But it is ok for drivers. */
EXPORT_SYMBOL(ioremap);
EXPORT_SYMBOL(iounmap);
#endif
/* in arch/sparc/mm/highmem.c */
#ifdef CONFIG_HIGHMEM
EXPORT_SYMBOL(kmap_atomic);
EXPORT_SYMBOL(kunmap_atomic);
#endif
/* Solaris/SunOS binary compatibility */
EXPORT_SYMBOL(svr4_setcontext);
EXPORT_SYMBOL(svr4_getcontext);
EXPORT_SYMBOL(_sigpause_common);
EXPORT_SYMBOL(dump_thread);
/* prom symbols */
EXPORT_SYMBOL(idprom);
EXPORT_SYMBOL(prom_root_node);
EXPORT_SYMBOL(prom_getchild);
EXPORT_SYMBOL(prom_getsibling);
EXPORT_SYMBOL(prom_searchsiblings);
EXPORT_SYMBOL(prom_firstprop);
EXPORT_SYMBOL(prom_nextprop);
EXPORT_SYMBOL(prom_getproplen);
EXPORT_SYMBOL(prom_getproperty);
EXPORT_SYMBOL(prom_node_has_property);
EXPORT_SYMBOL(prom_setprop);
EXPORT_SYMBOL(saved_command_line);
EXPORT_SYMBOL(prom_apply_obio_ranges);
EXPORT_SYMBOL(prom_getname);
EXPORT_SYMBOL(prom_feval);
EXPORT_SYMBOL(prom_getbool);
EXPORT_SYMBOL(prom_getstring);
EXPORT_SYMBOL(prom_getint);
EXPORT_SYMBOL(prom_getintdefault);
EXPORT_SYMBOL(prom_finddevice);
EXPORT_SYMBOL(romvec);
EXPORT_SYMBOL(__prom_getchild);
EXPORT_SYMBOL(__prom_getsibling);
/* sparc library symbols */
EXPORT_SYMBOL(memchr);
EXPORT_SYMBOL(memscan);
EXPORT_SYMBOL(strlen);
EXPORT_SYMBOL(strnlen);
EXPORT_SYMBOL(strcpy);
EXPORT_SYMBOL(strncpy);
EXPORT_SYMBOL(strcat);
EXPORT_SYMBOL(strncat);
EXPORT_SYMBOL(strcmp);
EXPORT_SYMBOL(strncmp);
EXPORT_SYMBOL(strchr);
EXPORT_SYMBOL(strrchr);
EXPORT_SYMBOL(strpbrk);
EXPORT_SYMBOL(strstr);
EXPORT_SYMBOL(page_kernel);
/* Special internal versions of library functions. */
EXPORT_SYMBOL(__copy_1page);
EXPORT_SYMBOL(__memcpy);
EXPORT_SYMBOL(__memset);
EXPORT_SYMBOL(bzero_1page);
EXPORT_SYMBOL(__bzero);
EXPORT_SYMBOL(__memscan_zero);
EXPORT_SYMBOL(__memscan_generic);
EXPORT_SYMBOL(__memcmp);
EXPORT_SYMBOL(__strncmp);
EXPORT_SYMBOL(__memmove);
/* Moving data to/from userspace. */
EXPORT_SYMBOL(__copy_user);
EXPORT_SYMBOL(__strncpy_from_user);
/* Networking helper routines. */
EXPORT_SYMBOL(__csum_partial_copy_sparc_generic);
EXPORT_SYMBOL(csum_partial);
/* Cache flushing. */
EXPORT_SYMBOL(sparc_flush_page_to_ram);
/* For when serial stuff is built as modules. */
EXPORT_SYMBOL(sun_do_break);
EXPORT_SYMBOL(__ret_efault);
EXPORT_SYMBOL(memcmp);
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(memmove);
EXPORT_SYMBOL(__ashrdi3);
EXPORT_SYMBOL(__ashldi3);
EXPORT_SYMBOL(__lshrdi3);
EXPORT_SYMBOL(__muldi3);
EXPORT_SYMBOL(__divdi3);
EXPORT_SYMBOL(rem);
EXPORT_SYMBOL(urem);
EXPORT_SYMBOL(mul);
EXPORT_SYMBOL(umul);
EXPORT_SYMBOL(div);
EXPORT_SYMBOL(udiv);
#ifdef CONFIG_DEBUG_BUGVERBOSE
EXPORT_SYMBOL(do_BUG);
#endif
/* Sun Power Management Idle Handler */
EXPORT_SYMBOL(pm_idle);
/* Binfmt_misc needs this */
EXPORT_SYMBOL(sys_close);
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