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* Merge branch 'master' of ↵David S. Miller2011-05-201-3/+9
|\ | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
| * sparc32: Fixed unaligned memory copying in function ↵Tkhai Kirill2011-05-111-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __csum_partial_copy_sparc_generic When we are in the label cc_dword_align, registers %o0 and %o1 have the same last 2 bits, but it's not guaranteed one of them is zero. So we can get unaligned memory access in label ccte. Example of parameters which lead to this: %o0=0x7ff183e9, %o1=0x8e709e7d, %g1=3 With the parameters I had a memory corruption, when the additional 5 bytes were rewritten. This patch corrects the error. One comment to the patch. We don't care about the third bit in %o1, because cc_end_cruft stores word or less. Signed-off-by: Tkhai Kirill <tkhai@yandex.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sparc32: removed unused code, implemented by generic codeDaniel Hellstrom2011-04-212-205/+0
|/ | | | | Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'core-locking-for-linus' of ↵Linus Torvalds2011-03-151-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rtmutex: tester: Remove the remaining BKL leftovers lockdep/timers: Explain in detail the locking problems del_timer_sync() may cause rtmutex: Simplify PI algorithm and make highest prio task get lock rwsem: Remove redundant asmregparm annotation rwsem: Move duplicate function prototypes to linux/rwsem.h rwsem: Unify the duplicate rwsem_is_locked() inlines rwsem: Move duplicate init macros and functions to linux/rwsem.h rwsem: Move duplicate struct rwsem declaration to linux/rwsem.h x86: Cleanup rwsem_count_t typedef rwsem: Cleanup includes locking: Remove deprecated lock initializers cred: Replace deprecated spinlock initialization kthread: Replace deprecated spinlock initialization xtensa: Replace deprecated spinlock initialization um: Replace deprecated spinlock initialization sparc: Replace deprecated spinlock initialization mips: Replace deprecated spinlock initialization cris: Replace deprecated spinlock initialization alpha: Replace deprecated spinlock initialization rtmutex-tester: Remove BKL tests
| * sparc: Replace deprecated spinlock initializationThomas Gleixner2011-01-271-1/+1
| | | | | | | | | | | | | | | | SPIN_LOCK_UNLOCK is deprecated. Use the lockdep capable variant instead. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: David S. Miller <davem@davemloft.net>
* | sparc: use bitmap_set()Akinobu Mita2011-02-081-3/+2
|/ | | | | | | | | Use bitmap_set() instead of calling __set_bit() each bit. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: sparclinux@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Make lock backoff really a NOP on UP builds.David S. Miller2010-08-182-14/+14
| | | | | | | | | | | As noticed by Mikulas Patocka, the backoff macros don't completely nop out for UP builds, we still get a branch always and a delay slot nop. Fix this by making the branch to the backoff spin loop selective, then we can nop out the spin loop completely. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: simple microoptimizations for atomic functionsMikulas Patocka2010-08-181-12/+8
| | | | | | | | | Simple microoptimizations for sparc64 atomic functions: Save one instruction by using a delay slot. Use %g1 instead of %g7, because %g1 is written earlier. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Make rwsems 64-bit.David S. Miller2010-08-172-164/+1
| | | | | | | | | | | | | | | | | | | | Basically tip-off the powerpc code, use a 64-bit type and atomic64_t interfaces for the implementation. This gets us off of the by-hand asm code I wrote, which frankly I think probably ruins I-cache hit rates. The idea was the keep the call chains less deep, but anything taking the rw-semaphores probably is also calling other stuff and therefore already has allocated a stack-frame. So no real stack frame savings ever. Ben H. has posted patches to make powerpc use 64-bit too and with some abstractions we can probably use a shared header file somewhere. With suggestions from Sam Ravnborg. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Allocate sufficient stack space in ftrace stubs.David S. Miller2010-04-131-4/+4
| | | | | | | | | | | | | 128 bytes is sufficient for the register window save area, but the calling conventions allow the callee to save up to 6 incoming argument registers into the stack frame after the register window save area. This means a minimal stack frame is 176 bytes (128 + (6 * 8)). This fixes random crashes when using the function tracer. Reported-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Add function graph tracer support.David S. Miller2010-04-121-6/+56
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Give a stack frame to the ftrace call sites.David S. Miller2010-04-121-15/+16
| | | | | | | | | | | It's the only way we'll be able to implement the function graph tracer properly. A positive is that we no longer have to worry about the linker over-optimizing the tail call, since we don't use a tail call any more. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Kill CONFIG_STACK_DEBUG code.David S. Miller2010-04-121-74/+0
| | | | | | The generic stack tracer does this job just as well. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Add HAVE_FUNCTION_TRACE_MCOUNT_TEST and tidy up.David S. Miller2010-04-121-7/+15
| | | | | | | | | | | | | | Check function_trace_stop at ftrace_caller Toss mcount_call and dummy call of ftrace_stub, unnecessary. Document problems we'll have if the final kernel image link ever turns on relaxation. Properly size 'ftrace_call' so it looks right when inspecting instructions under gdb et al. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc: Stop trying to be so fancy and use __builtin_{memcpy,memset}()David S. Miller2009-12-105-13/+2
| | | | | | | This mirrors commit ff60fab71bb3b4fdbf8caf57ff3739ffd0887396 (x86: Use __builtin_memset and __builtin_memcpy for memset/memcpy) Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc: Use __builtin_object_size() to validate the buffer size for ↵David S. Miller2009-12-102-0/+9
| | | | | | | | | copy_from_user() This mirrors x86 commit 9f0cf4adb6aa0bfccf675c938124e68f7f06349d (x86: Use __builtin_object_size() to validate the buffer size for copy_from_user()) Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Fix stack debugging IRQ stack regression.David S. Miller2009-12-091-2/+3
| | | | | | | | | | | | | Commit 4f70f7a91bffdcc39f088748dc678953eb9a3fbd (sparc64: Implement IRQ stacks.) has two bugs. First, the softirq range check forgets to subtract STACK_BIAS before comparing with %sp. Next, on failure the wrong label is jumped to, resulting in a bogus stack being loaded. Reported-by: Igor Kovalenko <igor.v.kovalenko@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Fix section attribute warnings.David S. Miller2009-05-292-2/+2
| | | | | | | CSUM copy to/from user assembler was missing allocatable and executable attributes for .fixup Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Fix probe_kernel_{read,write}().David S. Miller2009-02-0810-48/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is based upon a report from Chris Torek and his initial patch. From Chris's report: -------------------- This came up in testing kgdb, using the built-in tests -- turn on CONFIG_KGDB_TESTS, then echo V1 > /sys/module/kgdbts/parameters/kgdbts -- but it would affect using kgdb if you were debugging and looking at bad pointers. -------------------- When we get a copy_{from,to}_user() request and the %asi is set to something other than ASI_AIUS (which is userspace) then we branch off to a routine called memcpy_user_stub(). It just does a straight memcpy since we are copying from kernel to kernel in this case. The logic was that since source and destination are both kernel pointers we don't need to have exception checks. But for what probe_kernel_{read,write}() is trying to do, we have to have the checks, otherwise things like kgdb bad kernel pointer accesses don't do the right thing. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Kill .fixup section bloat.David S. Miller2009-02-0814-74/+14
| | | | | | | | | | | | | | | | | | | This is an implementation of a suggestion made by Chris Torek: -------------------- Something else I noticed in passing: the EX and EX_LD/EX_ST macros scattered throughout the various .S files make a fair bit of .fixup code, all of which does the same thing. At the cost of one symbol in copy_in_user.S, you could just have one common two-instruction retl-and-mov-1 fixup that they all share. -------------------- The following is with a defconfig build: text data bss dec hex filename 3972767 344024 584449 4901240 4ac978 vmlinux.orig 3968887 344024 584449 4897360 4aba50 vmlinux Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: fix modpost failureSam Ravnborg2009-01-171-1/+2
| | | | | | | | | | | | | | | | | | Previously PeeCeeI.o was a library but it was always pulled in due to insw and friends being exported (at least for a modular kernel). But this resulted in modpost failures if there where no in-kernel users because then insw & friends were not linked in. Fix this by including PeeCeeI.o in the kernel unconditionally. The only drawback for this solution is that a nonmodular kernel will always include insw & friends no matter if they are in use or not. Reported-by: Meelis Roos <mroos@linux.ee> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: move EXPORT_SYMBOL to the symbols definitionSam Ravnborg2009-01-082-0/+13
| | | | | | | | | | | | | | | | | | | | | Move all applicable EXPORT_SYMBOL()s to the file where the respective symbol is defined. Removed all the includes that are no longer needed in sparc_ksyms_64.c Comment all remaining EXPORT_SYMBOL()s in sparc_ksyms_64.c Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Additions by Julian Calaby: * Moved EXPORT_SYMBOL()s for prom functions to their rightful places. * Made some minor cleanups to the includes and comments of sparc_ksyms_64.c * Updated and tidied commit message. * Rebased patch over sparc-2.6.git HEAD. * Ensured that all modified files have the correct includes. Signed-off-by: Julian Calaby <julian.calaby@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc: Create a new file lib/ksyms.c and add export of all symbols defined ↵Sam Ravnborg2009-01-082-0/+197
| | | | | | | | | | | | | | | | | | in assembler in lib/ to this file. Remove the duplicate entries from kernel/sparc_ksyms_*.c The rationale behind this is that the EXPORT_SYMBOL() should be close to their definition and we cannot add designate a symbol to be exported in assembler so at least put it in a file in the same directory. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Additions by Julian Calaby: * Rebased over sparc-2.6.git HEAD Signed-off-by: Julian Calaby <julian.calaby@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc: Commonize memcmp assembler.David S. Miller2008-12-094-59/+28
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc: Unify strlen assembler.David S. Miller2008-12-093-102/+21
| | | | | | | | | | Use the new asm/asm.h header to help commonize the strlen assembler between 32-bit and 64-bit While we're here, use proper linux/linkage.h macros instead of by-hand stuff. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc: Kill memcmp_32.S code which has been ifdef'd out for centuries.David S. Miller2008-12-081-282/+0
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc,sparc64: unify lib/Sam Ravnborg2008-12-0449-0/+6493
| | | | | | | | | | o Renamed files in sparc64 to <name>_64.S when identical to sparc32 files. o iomap.c were equal for sparc32 and sparc64 o adjusted sparc/Makefile now we have only one lib/ Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc: prepare lib/ for unificationSam Ravnborg2008-12-0410-8/+17
| | | | | | | | | | | Identical named files renamed to <name>_32.S Refactored Makefile to prepare for unification. Linking order was altered slightly - but this is a lib.a file so it should not matter. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc: remove CVS keywordsAdrian Bunk2008-05-2015-15/+13
| | | | | | | | This patch removes the CVS keywords that weren't updated for a long time from comments. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* iomap: fix 64 bits resources on 32 bitsBenjamin Herrenschmidt2008-04-291-2/+2
| | | | | | | | | | | | | | Almost all implementations of pci_iomap() in the kernel, including the generic lib/iomap.c one, copies the content of a struct resource into unsigned long's which will break on 32 bits platforms with 64 bits resources. This fixes all definitions of pci_iomap() to use resource_size_t. I also "fixed" the 64bits arch for consistency. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [SPARC/SPARC64]: Fix usage of .section .sched.text in assembler code.Sam Ravnborg2008-01-311-1/+1
| | | | | | | | ld will generate an unique named section when assembler do not use "ax" but gcc does. Add the missing annotation. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC32]: Add __cmpdi2() libcall implementation ala. MIPS.David S. Miller2007-08-263-1/+47
| | | | | | | Device mapper generates calls to this with recent versions of gcc. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC32]: Fix bug in sparc optimized memset.Alexander Shmelev2007-07-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sparc optimized memset (arch/sparc/lib/memset.S) does not fill last byte of the memory area, if area size is less than 8 bytes and start address is not word (4-bytes) aligned. Here is code chunk where bug located: /* %o0 - memory address, %o1 - size, %g3 - value */ 8: add %o0, 1, %o0 subcc %o1, 1, %o1 bne,a 8b stb %g3, [%o0 - 1] This code should write byte every loop iteration, but last time delay instruction stb is not executed because branch instruction sets "annul" bit. Patch replaces bne,a by bne instruction. Error can be reproduced by simple kernel module: -------------------- #include <linux/module.h> #include <linux/config.h> #include <linux/kernel.h> #include <linux/errno.h> #include <string.h> static void do_memset(void **p, int size) { memset(p, 0x00, size); } static int __init memset_test_init(void) { char fooc[8]; int *fooi; memset(fooc, 0xba, sizeof(fooc)); do_memset((void**)(fooc + 3), 1); fooi = (int*) fooc; printk("%08X %08X\n", fooi[0], fooi[1]); return -1; } static void __exit memset_test_cleanup(void) { return; } module_init(memset_test_init); module_exit(memset_test_cleanup); MODULE_LICENSE("GPL"); EXPORT_NO_SYMBOLS; -------------------- Signed-off-by: Alexander Shmelev <ashmelev@task.sun.mcst.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC32]: Build fix.Andrew Morton2007-05-311-2/+2
| | | | | | | | | | | | | | | Fix 6197fe4d720ea3e2ee94cdc7ef32d6c0151199de arch/sparc/lib/atomic32.c: In function '__cmpxchg_u32': arch/sparc/lib/atomic32.c:127: error: 'addr' undeclared (first use in this function) arch/sparc/lib/atomic32.c:127: error: (Each undeclared identifier is reported only once arch/sparc/lib/atomic32.c:127: error: for each function it appears in.) I assume this is what was intended.. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: William Irwin <wli@holomorphy.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC]: Emulate cmpxchg like pariscKyle McMartin2007-05-291-0/+15
| | | | | Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* header cleaning: don't include smp_lock.h when not usedRandy Dunlap2007-05-081-1/+0
| | | | | | | | | | | | Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [SPARC32]: Fix SMP build regressionRobert Reif2007-03-261-0/+2
| | | | | | | | | | | | commit b19cbe2a1695c09c74f83646c4b82b51123b3690 [BRIDGE]: Fix fdb RCU race breaks sparc SMP build because atomic_add_unless is not exported. This patch exports atomic_add_unless and atomic_cmpxchg. Signed-off-by: Robert Reif <reif@earthlink.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC]: Make bitops use same spinlocks as atomics.David S. Miller2006-12-173-111/+41
| | | | | | | | | Recent workqueue changes basically make this a formal requirement. Also, move atomic32.o from lib-y to obj-y since it exports symbols to modules. Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] sparc32 rwlock fixAl Viro2006-10-081-0/+20
| | | | | | | | | | | | | | | | | read_trylock() is broken on sparc32 (doesn't build and didn't work right, actually). Proposed fix: - make "writer holds lock" distinguishable from "reader tries to grab lock" - have __raw_read_trylock() try to acquire the mutex (in LSB of lock), terminating spin if we see that there's writer holding it. Then do the rest as we do in read_lock(). Thanks to Ingo for discussion... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SPARC]: Don't zero out tail during copy_from_user_inatomic().David S. Miller2006-09-291-0/+4
| | | | | | | | Actually, since we use the same code for all the copying types in and out of userspace, we check at runtime whether preemption is disabled. Signed-off-by: David S. Miller <davem@davemloft.net>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-303-3/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [SPARC]: Add iomap interfaces.David S. Miller2006-06-252-0/+50
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC]: atomic_clear_mask build fixPaul Jackson2005-12-121-1/+0
| | | | | | | | | | | | This fixes one build error introduced in sparc with the patch of Oct 30, resent Nov 4 "[patch 3/5] atomic: atomic_inc_not_zero" I still can't get sparc to build, but at least it gets further after I remove this line. Apparently, this change was agreed to by Andrew and Nick on Nov 14, but everyone thought someone else was doing it. Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] atomic: inc_not_zeroNick Piggin2005-11-131-0/+15
| | | | | | | | | | | Introduce an atomic_inc_not_zero operation. Make this a special case of atomic_add_unless because lockless pagecache actually wants atomic_inc_not_negativeone due to its offset refcount. Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] atomic: cmpxchgNick Piggin2005-11-131-5/+16
| | | | | | | | | Introduce an atomic_cmpxchg operation. Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] m68k: thread_info header cleanupAl Viro2005-11-131-0/+1
| | | | | | | | | | | | | | | | | | | | a) in smp_lock.h #include of sched.h and spinlock.h moved under #ifdef CONFIG_LOCK_KERNEL. b) interrupt.h now explicitly pulls sched.h (not via smp_lock.h from hardirq.h as it used to) c) in three more places we need changes to compensate for (a) - one place in arch/sparc needs string.h now, hardirq.h needs forward declaration of task_struct and preempt.h needs direct include of thread_info.h. d) thread_info-related helpers in sched.h and thread_info.h put under ifndef __HAVE_THREAD_FUNCTIONS. Obviously safe. Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SPARC]: Fix dot-symbol exporting for good.Al Viro2005-09-116-0/+12
| | | | | | | | | | From: Al Viro <viro@ZenIV.linux.org.uk> Instead of playing all of these hand-coded assembler aliasing games, just translate symbol names in the name space ".sym" to "_Sym" at module load time. Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] spinlock consolidationIngo Molnar2005-09-102-204/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* [PATCH] more SPIN_LOCK_UNLOCKED -> DEFINE_SPINLOCK conversionsIngo Molnar2005-09-091-1/+1
| | | | | | | | | This converts the final 20 DEFINE_SPINLOCK holdouts. (another 580 places are already using DEFINE_SPINLOCK). Build tested on x86. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2Linus Torvalds2005-04-1632-0/+7186
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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