Will Deacon 0d98bb2656 sched: Prevent compiler from optimising the sched_avg_update() loop ...

GCC 4.4.1 on ARM has been observed to replace the while loop in
sched_avg_update with a call to uldivmod, resulting in the
following build failure at link-time:

kernel/built-in.o: In function `sched_avg_update':
 kernel/sched.c:1261: undefined reference to `__aeabi_uldivmod'
 kernel/sched.c:1261: undefined reference to `__aeabi_uldivmod'
make: *** [.tmp_vmlinux1] Error 1

This patch introduces a fake data hazard to the loop body to
prevent the compiler optimising the loop away.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2010-06-25 16:11:50 +02:00

..

debug

module: fix kdb's illicit use of struct module_use.

2010-06-05 11:17:36 +09:30

gcov

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irq

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power

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time

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trace

blktrace: Fix new kernel-doc warnings

2010-05-31 09:58:20 +02:00

.gitignore

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acct.c

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async.c

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audit_tree.c

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audit_watch.c

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audit.c

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audit.h

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auditfilter.c

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auditsc.c

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backtracetest.c

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bounds.c

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capability.c

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cgroup_freezer.c

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cgroup.c

cgroups: alloc_css_id() increments hierarchy depth

2010-06-04 15:21:45 -07:00

compat.c

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configs.c

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cpu.c

fix cpu_chain section mismatch...

2010-06-01 09:22:50 -07:00

cpuset.c

cpusets: new round-robin rotor for SLAB allocations

2010-05-27 09:12:44 -07:00

cred.c

umh: creds: kill subprocess_info->cred logic

2010-05-27 09:12:45 -07:00

delayacct.c

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dma.c

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early_res.c

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elfcore.c

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exec_domain.c

sys_personality: change sys_personality() to accept "unsigned int" instead of u_long

2010-06-04 15:21:45 -07:00

exit.c

proc: turn signal_struct->count into "int nr_threads"

2010-05-27 09:12:47 -07:00

extable.c

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fork.c

Revert "cpusets: randomize node rotor used in cpuset_mem_spread_node()"

2010-05-30 09:00:03 -07:00

freezer.c

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futex_compat.c

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futex.c

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groups.c

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hrtimer.c

hrtimer: Avoid double seqlock

2010-05-26 16:15:37 +02:00

hung_task.c

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hw_breakpoint.c

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itimer.c

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kallsyms.c

kdb: core for kgdb back end (2 of 2)

2010-05-20 21:04:21 -05:00

Kconfig.freezer

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Kconfig.hz

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Kconfig.locks

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Kconfig.preempt

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kexec.c

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kfifo.c

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kmod.c

call_usermodehelper: UMH_WAIT_EXEC ignores kernel_thread() failure

2010-05-27 09:12:45 -07:00

kprobes.c

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ksysfs.c

sysfs: add struct file* to bin_attr callbacks

2010-05-21 09:37:31 -07:00

kthread.c

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latencytop.c

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lockdep_internals.h

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lockdep_proc.c

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lockdep_states.h

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lockdep.c

lockdep: Add novalidate class for dev->mutex conversion

2010-05-21 09:37:30 -07:00

Makefile

Move kernel/kgdb.c to kernel/debug/debug_core.c

2010-05-20 21:04:18 -05:00

module.c

module: fix bne2 "gave up waiting for init of module libcrc32c"

2010-06-05 11:17:37 +09:30

mutex-debug.c

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mutex-debug.h

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mutex.c

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mutex.h

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notifier.c

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ns_cgroup.c

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nsproxy.c

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padata.c

kernel/: convert cpu notifier to return encapsulate errno value

2010-05-27 09:12:48 -07:00

panic.c

panic: call console_verbose() in panic

2010-05-27 09:12:53 -07:00

params.c

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perf_event.c

perf: Fix crash in swevents

2010-06-03 17:03:08 +02:00

pid_namespace.c

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pid.c

pids: increase pid_max based on num_possible_cpus

2010-05-27 09:12:51 -07:00

pm_qos_params.c

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posix-cpu-timers.c

posix-cpu-timers: avoid "task->signal != NULL" checks

2010-05-27 09:12:46 -07:00

posix-timers.c

posix_timer: Fix error path in timer_create

2010-05-27 22:38:15 +02:00

printk.c

printk,kdb: capture printk() when in kdb shell

2010-05-20 21:04:27 -05:00

profile.c

numa: in-kernel profiling: use cpu_to_mem() for per cpu allocations

2010-05-27 09:12:57 -07:00

ptrace.c

ptrace: PTRACE_GETFDPIC: fix the unsafe usage of child->mm

2010-05-27 09:12:44 -07:00

range.c

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rcupdate.c

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rcutiny_plugin.h

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rcutiny.c

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rcutorture.c

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rcutree_plugin.h

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rcutree_trace.c

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rcutree.c

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rcutree.h

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relay.c

kernel/: convert cpu notifier to return encapsulate errno value

2010-05-27 09:12:48 -07:00

res_counter.c

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resource.c

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rtmutex_common.h

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rtmutex-debug.c

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rtmutex-debug.h

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rtmutex-tester.c

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rtmutex.c

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rtmutex.h

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rwsem.c

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sched_clock.c

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sched_cpupri.c

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sched_cpupri.h

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sched_debug.c

proc_sched_show_task(): use get_nr_threads()

2010-05-27 09:12:47 -07:00

sched_fair.c

sched: Fix wake_affine() vs RT tasks

2010-06-01 09:27:16 +02:00

sched_features.h

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sched_idletask.c

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sched_rt.c

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sched_stats.h

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sched.c

sched: Prevent compiler from optimising the sched_avg_update() loop

2010-06-25 16:11:50 +02:00

seccomp.c

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semaphore.c

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signal.c

exit: change zap_other_threads() to count sub-threads

2010-05-27 09:12:46 -07:00

slow-work-debugfs.c

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slow-work.c

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slow-work.h

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smp.c

kernel/: convert cpu notifier to return encapsulate errno value

2010-05-27 09:12:48 -07:00

softirq.c

kernel/: fix BUG_ON checks for cpu notifier callbacks direct call

2010-06-04 15:21:45 -07:00

softlockup.c

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spinlock.c

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srcu.c

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stacktrace.c

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stop_machine.c

sched: Make sure timers have migrated before killing the migration_thread

2010-05-31 08:37:44 +02:00

sys_ni.c

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sys.c

kmod: add init function to usermodehelper

2010-05-27 09:12:44 -07:00

sysctl_binary.c

sysctl: don't use own implementation of hex_to_bin()

2010-05-25 08:07:05 -07:00

sysctl_check.c

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sysctl.c

pipe: change /proc/sys/fs/pipe-max-pages to byte sized interface

2010-06-03 14:54:39 +02:00

taskstats.c

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test_kprobes.c

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time.c

timekeeping: Fix timezone update

2010-05-24 11:50:38 +02:00

timeconst.pl

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timer.c

kernel/: fix BUG_ON checks for cpu notifier callbacks direct call

2010-06-04 15:21:45 -07:00

tracepoint.c

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tsacct.c

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uid16.c

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up.c

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user_namespace.c

kref: remove kref_set

2010-05-21 09:37:29 -07:00

user-return-notifier.c

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user.c

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utsname_sysctl.c

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utsname.c

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wait.c

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workqueue.c

kernel/: convert cpu notifier to return encapsulate errno value

2010-05-27 09:12:48 -07:00