linux/include/asm-generic, branch v2.6.28

atomic: fix a typo in atomic_long_xchg()

2008-12-10T16:01:53Z

atomic_long_xchg() is not correctly defined for 32bit arches. Signed-off-by: Eric Dumazet Cc: Mathieu Desnoyers Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] asm/generic: fix bug - kernel fails to build when enable some common audit code on Blackfin

2008-12-09T07:27:39Z

If you enable some common audit code, the kernel fails to build. In file included from lib/audit.c:17: include/asm-generic/audit_write.h:3: error: '__NR_swapon' undeclared here (not in a function) make[1]: *** [lib/audit.o] Error 1 make: *** [lib] Error 2 So do not use __NR_swapon if it isnt defined for a port. Signed-off-by: Mike Frysinger Signed-off-by: Bryan Wu Signed-off-by: Al Viro

Fix __pfn_to_page(pfn) for CONFIG_DISCONTIGMEM=y

2008-11-08T18:02:48Z

Fix the __pfn_to_page(pfn) macro so that it doesn't evaluate its argument twice in the CONFIG_DISCONTIGMEM=y case, because 'pfn' may be a result of a funtion call having side effects. For example, the hibernation code applies pfn_to_page(pfn) to the result of a function returning the pfn corresponding to the next set bit in a bitmap and the current bit position is modified on each call. This leads to "interesting" failures for CONFIG_DISCONTIGMEM=y due to the current behavior of __pfn_to_page(pfn). Signed-off-by: Rafael J. Wysocki Acked-by: Pavel Machek Signed-off-by: Linus Torvalds

asm-generic: define DIE_OOPS in asm-generic

2008-10-27T10:39:03Z

Impact: build fix DIE_OOPS is now used in the generic trace handling code so it needs to be defined for all architectures. Define it in asm-generic so that it's available to all by default and doesn't cause build errors for architectures that rely on the generic implementation. Signed-off-by: Jonas Bonn Acked-by: Steven Rostedt Signed-off-by: Ingo Molnar

mutex: speed up generic mutex implementations

2008-10-23T16:18:20Z

- atomic operations which both modify the variable and return something imply full smp memory barriers before and after the memory operations involved (failing atomic_cmpxchg, atomic_add_unless, etc don't imply a barrier because they don't modify the target). See Documentation/atomic_ops.txt. So remove extra barriers and branches. - All architectures support atomic_cmpxchg. This has no relation to __HAVE_ARCH_CMPXCHG. We can just take the atomic_cmpxchg path unconditionally This reduces a simple single threaded fastpath lock+unlock test from 590 cycles to 203 cycles on a ppc970 system. Signed-off-by: Nick Piggin Signed-off-by: Linus Torvalds

fix WARN() for PPC

2008-10-20T22:29:57Z

powerpc doesn't use the generic WARN_ON infrastructure. The newly introduced WARN() as a result didn't print the message, this patch adds the printk for this specific case. Signed-off-by: Arjan van de Ven Signed-off-by: Linus Torvalds

Merge branch 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-10-20T20:35:07Z

* 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (131 commits) tracing/fastboot: improve help text tracing/stacktrace: improve help text tracing/fastboot: fix initcalls disposition in bootgraph.pl tracing/fastboot: fix bootgraph.pl initcall name regexp tracing/fastboot: fix issues and improve output of bootgraph.pl tracepoints: synchronize unregister static inline tracepoints: tracepoint_synchronize_unregister() ftrace: make ftrace_test_p6nop disassembler-friendly markers: fix synchronize marker unregister static inline tracing/fastboot: add better resolution to initcall debug/tracing trace: add build-time check to avoid overrunning hex buffer ftrace: fix hex output mode of ftrace tracing/fastboot: fix initcalls disposition in bootgraph.pl tracing/fastboot: fix printk format typo in boot tracer ftrace: return an error when setting a nonexistent tracer ftrace: make some tracers reentrant ring-buffer: make reentrant ring-buffer: move page indexes into page headers tracing/fastboot: only trace non-module initcalls ftrace: move pc counter in irqtrace ... Manually fix conflicts: - init/main.c: initcall tracing - kernel/module.c: verbose level vs tracepoints - scripts/bootgraph.pl: fallout from cherry-picking commits.

rtc: use bcd2bin/bin2bcd

2008-10-20T15:52:41Z

Change various rtc related code to use the new bcd2bin/bin2bcd functions instead of the obsolete BCD_TO_BIN/BIN_TO_BCD/BCD2BIN/BIN2BCD macros. Signed-off-by: Adrian Bunk Acked-by: Alessandro Zummo Cc: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6

2008-10-16T19:40:26Z

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (46 commits) UIO: Fix mapping of logical and virtual memory UIO: add automata sercos3 pci card support UIO: Change driver name of uio_pdrv UIO: Add alignment warnings for uio-mem Driver core: add bus_sort_breadthfirst() function NET: convert the phy_device file to use bus_find_device_by_name kobject: Cleanup kobject_rename and !CONFIG_SYSFS kobject: Fix kobject_rename and !CONFIG_SYSFS sysfs: Make dir and name args to sysfs_notify() const platform: add new device registration helper sysfs: use ilookup5() instead of ilookup5_nowait() PNP: create device attributes via default device attributes Driver core: make bus_find_device_by_name() more robust usb: turn dev_warn+WARN_ON combos into dev_WARN debug: use dev_WARN() rather than WARN_ON() in device_pm_add() debug: Introduce a dev_WARN() function sysfs: fix deadlock device model: Do a quickcheck for driver binding before doing an expensive check Driver core: Fix cleanup in device_create_vargs(). Driver core: Clarify device cleanup. ...

gpiolib: request/free hooks

2008-10-16T18:21:40Z

Add a new internal mechanism to gpiolib to support low power operations by letting gpio_chip instances see when their GPIOs are in use. When no GPIOs are active, chips may be able to enter lower powered runtime states by disabling clocks and/or power domains. Signed-off-by: David Brownell Cc: "Magnus Damm" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds