Thomas Gleixner 8b0b1db013 remove put_cpu_no_resched() ... put_cpu_no_resched() is an optimization of put_cpu() which unfortunately can cause high latencies. The nfs iostats code uses put_cpu_no_resched() in a code sequence where a reschedule request caused by an interrupt between the get_cpu() and the put_cpu_no_resched() can delay the reschedule for at least HZ. The other users of put_cpu_no_resched() optimize correctly in interrupt code, but there is no real harm in using the put_cpu() function which is an alias for preempt_enable(). The extra check of the preemmpt count is not as critical as the potential source of missing a reschedule. Debugged in the preempt-rt tree and verified in mainline. Impact: remove a high latency source [akpm@linux-foundation.org: build fix] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Tony Luck <tony.luck@intel.com> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-06-16 19:47:48 -07:00
..
cpufreq
.gitignore
acpi-ext.c
acpi-processor.c
acpi.c	irq: change ACPI GSI APIs to also take a device argument	2009-04-28 12:21:17 +02:00
asm-offsets.c	ia64/pv_ops/xen: paravirtualize read/write ar.itc and ar.itm	2009-03-26 10:50:32 -07:00
audit.c
brl_emu.c
crash_dump.c
crash.c
cyclone.c	clocksource: pass clocksource to read() callback	2009-04-21 13:41:47 -07:00
dma-mapping.c	IA64: fix compile error on IA64_DIG_VTD	2009-01-27 15:45:21 +01:00
efi_stub.S
efi.c	ia64/pv_ops/binary patch: define paravirt_dv_serialize_data() and suppress false positive warning.	2009-03-26 11:02:59 -07:00
entry.h
entry.S	[IA64] wire up preadv/pwritev system calls	2009-04-08 13:46:14 -07:00
err_inject.c
esi_stub.S
esi.c
fsys.S	ia64/pv_ops: paravirtualize mov = ar.itc.	2009-03-26 10:50:22 -07:00
fsyscall_gtod_data.h
ftrace.c	ftrace, ia64: IA64 dynamic ftrace support	2009-01-14 12:11:31 +01:00
gate-data.S
gate.lds.S	ia64/pv_ops: gate page paravirtualization.	2009-03-26 10:51:02 -07:00
gate.S	ia64/pv_ops: paravirtualize gate.S.	2009-03-26 11:01:46 -07:00
head.S	ia64/pv_ops/pv_time_ops: add sched_clock hook.	2009-03-26 10:50:42 -07:00
ia64_ksyms.c	ftrace, ia64: IA64 static ftrace support	2009-01-14 12:11:26 +01:00
init_task.c	mm: consolidate init_mm definition	2009-06-16 19:47:28 -07:00
iosapic.c	irq: change ->set_affinity() to return status	2009-04-28 12:21:16 +02:00
irq_ia64.c	KVM: use smp_send_reschedule in kvm_vcpu_kick	2009-06-10 11:48:53 +03:00
irq_lsapic.c
irq.c	Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2	2009-03-27 17:28:43 +01:00
ivt.S	ia64/pv_ops: paravirtualize mov = ar.itc.	2009-03-26 10:50:22 -07:00
jprobes.S
kprobes.c	kprobes: check CONFIG_FREEZER instead of CONFIG_PM	2009-01-16 14:32:17 -05:00
machine_kexec.c
machvec.c	x86, ia64: convert to use generic dma_map_ops struct	2009-01-06 14:06:57 +01:00
Makefile	Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-04-05 11:04:19 -07:00
Makefile.gate	ia64/pv_ops: gate page paravirtualization.	2009-03-26 10:51:02 -07:00
mca_asm.S
mca_drv_asm.S
mca_drv.c
mca_drv.h
mca.c	page allocator: do not check NUMA node ID when the caller knows the node is valid	2009-06-16 19:47:32 -07:00
minstate.h
module.c	[IA64] BUG to BUG_ON changes	2009-04-01 09:50:48 -07:00
msi_ia64.c	irq: change ->set_affinity() to return status	2009-04-28 12:21:16 +02:00
nr-irqs.c
numa.c
pal.S
palinfo.c	proc 2/2: remove struct proc_dir_entry::owner	2009-03-31 01:14:44 +04:00
paravirt_inst.h
paravirt_patch.c	ia64/pv_op/binarypatch: add helper functions to support binary patching for paravirt_ops.	2009-03-26 11:02:31 -07:00
paravirt_patchlist.c	ia64/pv_ops: gate page paravirtualization.	2009-03-26 10:51:02 -07:00
paravirt_patchlist.h	ia64/pv_ops: gate page paravirtualization.	2009-03-26 10:51:02 -07:00
paravirt.c	ia64: remove some warnings.	2009-03-27 11:11:04 -07:00
paravirtentry.S	ia64/pv_ops: implement binary patching optimization for native.	2009-03-26 11:02:42 -07:00
patch.c	ia64: remove some warnings.	2009-03-27 11:11:04 -07:00
pci-dma.c	dma-mapping: replace all DMA_24BIT_MASK macro with DMA_BIT_MASK(24)	2009-04-07 08:31:12 -07:00
pci-swiotlb.c	Replace all DMA_nBIT_MASK macro with DMA_BIT_MASK(n)	2009-04-13 15:04:33 -07:00
perfmon_default_smpl.c
perfmon_generic.h
perfmon_itanium.h
perfmon_mckinley.h
perfmon_montecito.h
perfmon.c	remove put_cpu_no_resched()	2009-06-16 19:47:48 -07:00
process.c	Simplify copy_thread()	2009-04-02 19:04:51 -07:00
ptrace.c
relocate_kernel.S
sal.c
salinfo.c	cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: ia64	2009-03-16 14:12:42 +10:30
setup.c	[IA64] BUG to BUG_ON changes	2009-04-01 09:50:48 -07:00
sigframe.h
signal.c
smp.c	[IA64] smp_flush_tlb_mm() should only send IPI's to cpus in cpu_vm_mask	2009-04-16 11:51:35 -07:00
smpboot.c	cpumask: Use accessors code.: ia64	2009-03-16 14:12:43 +10:30
sys_ia64.c	[CVE-2009-0029] Remove __attribute__((weak)) from sys_pipe/sys_pipe2	2009-01-14 14:15:15 +01:00
time.c	clocksource: pass clocksource to read() callback	2009-04-21 13:41:47 -07:00
topology.c
traps.c
unaligned.c	[IA64] dump stack on kernel unaligned warnings	2009-01-15 10:38:56 -08:00
uncached.c	page allocator: do not check NUMA node ID when the caller knows the node is valid	2009-06-16 19:47:32 -07:00
unwind_decoder.c
unwind_i.h
unwind.c	[IA64] Do not go beyond ARRAY_SIZE of unw.hash	2009-02-25 11:48:04 -08:00
vmlinux.lds.S	Pull pvops into release branch	2009-03-31 14:25:08 -07:00