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OpenCloudOS-Kernel/arch/mips/kernel
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Maksim Rayskiy 6667deb69e MIPS: Move idle task creation to work queue 
To avoid forking usermode thread when creating an idle task, move fork_idle
to a work queue.

If kernel starts with maxcpus= option which does not bring all available
cpus online at boot time, idle tasks for offline cpus are not created. If
later offline cpus are hotplugged through sysfs, __cpu_up is called in
the context of the user task, and fork_idle copies its non-zero mm
pointer.  This causes BUG() in per_cpu_trap_init.

This also avoids issues with resource limits of the CPU writing to sysfs,
containers, maybe others.

Signed-off-by: Maksim Rayskiy <mrayskiy@broadcom.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2070/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 		2011-03-14 21:07:27 +01:00
..
cpufreq MIPS: Use set_cpus_allowed_ptr 2010-05-21 21:31:14 +01:00
.gitignore [MIPS] Ignore vmlinux.lds generated files 2008-08-26 09:10:27 +01:00
8250-platform.c [MIPS] Put an end to <asm/serial.h>'s long and annyoing existence 2007-07-10 17:33:01 +01:00
Makefile MIPS: jump label: Add MIPS support. 2011-01-18 19:30:24 +01:00
asm-offsets.c MIPS: Remove unused task_struct.trap_no field. 2010-08-05 13:26:30 +01:00
binfmt_elfn32.c remove div_long_long_rem 2008-05-01 08:03:58 -07:00
binfmt_elfo32.c MIPS: 64-bit: Fix o32 core dump 2009-07-03 15:45:27 +01:00
branch.c MIPS: Sanitize restart logics 2010-10-18 16:59:02 +01:00
cevt-bcm1480.c MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
cevt-ds1287.c MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
cevt-gt641xx.c MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
cevt-r4k.c MIPS: Fix CP0 COUNTER clockevent race 2010-12-16 18:10:58 +00:00
cevt-sb1250.c MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
cevt-smtc.c MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
cevt-txx9.c MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
cpu-bugs64.c MIPS: uasm: Add option to export uasm API. 2010-08-05 13:26:21 +01:00
cpu-probe.c MIPS: Probe for presence of KScratch registers. 2011-01-18 19:30:22 +01:00
csrc-bcm1480.c clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
csrc-ioasic.c Update Yoichi Yuasa's e-mail address 2009-07-03 15:45:29 +01:00
csrc-powertv.c MIPS: PowerTV: Base files for Cisco PowerTV platform 2009-12-17 01:57:17 +00:00
csrc-r4k.c clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
csrc-sb1250.c clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
early_printk.c [MIPS] fix sparse warning about setup_early_printk() 2008-07-15 18:44:29 +01:00
entry.S [MIPS] SMTC: Close tiny holes in the SMTC IPI replay system. 2008-10-03 17:58:58 +01:00
ftrace.c MIPS, Tracing: Fix set_graph_function of function graph tracer 2011-03-14 21:07:24 +01:00
genex.S MIPS: Read watch registers with interrupts disabled. 2009-01-30 21:32:58 +00:00
gpio_txx9.c [MIPS] txx9: Make gpio_txx9 entirely spinlock-safe 2008-07-15 18:44:34 +01:00
head.S MIPS: Avoid potential hazard on Context register 2009-11-02 12:00:07 +01:00
i8253.c MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
i8259.c MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
init_task.c Use new __init_task_data macro in arch init_task.c files. 2009-09-21 06:27:08 +02:00
irq-gic.c MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
irq-gt641xx.c MIPS: GT641xx: Convert IRQ controller lock to raw spinlock. 2010-02-27 12:53:31 +01:00
irq-msc01.c MIPS: Enable GENERIC_HARDIRQS_NO__DO_IRQ for all platforms 2009-03-30 14:49:44 +02:00
irq-rm7000.c MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
irq-rm9000.c MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
irq.c MIPS: IRQ: Add stackoverflow detection 2010-10-29 19:08:27 +01:00
irq_cpu.c MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
irq_txx9.c MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
jump_label.c MIPS: jump label: Add MIPS support. 2011-01-18 19:30:24 +01:00
kgdb.c MIPS: Fix a typo. 2010-10-04 18:33:54 +01:00
kprobes.c MIPS: kprobe: Add support. 2010-08-05 13:26:29 +01:00
kspd.c MIPS: kspd: Adjust confusing if indentation 2010-10-04 18:33:54 +01:00
linux32.c MIPS: compat: Don't clobber personality bits in 32-bit sys_personality(). 2010-12-16 18:10:54 +00:00
machine_kexec.c [MIPS] Unconditionally writeback and invalidate caches on kexec. 2007-08-27 02:16:59 +01:00
mcount.S MIPS: tracing: Fix the indentation of mcount.S 2010-08-05 13:26:06 +01:00
mips-mt-fpaff.c MIPS: MT: Fix build error iFPU affinity code 2010-10-25 08:12:27 -07:00
mips-mt.c MIPS: Remove useless zero initializations. 2009-09-17 20:07:51 +02:00
mips_ksyms.c MIPS: Tracing: Add static function tracer support for MIPS 2009-12-17 01:57:21 +00:00
mips_machine.c MIPS: Add generic support for multiple machines within a single kernel 2011-01-18 19:30:21 +01:00
module.c MIPS: jump label: Add MIPS support. 2011-01-18 19:30:24 +01:00
octeon_switch.S MIPS: Nuke trailing blank lines 2010-02-27 12:53:14 +01:00
perf_event.c MIPS, Perf-events: Use unsigned delta for right shift in event update 2011-03-14 21:07:27 +01:00
perf_event_mipsxx.c MIPS, Perf-events: Work with the new PMU interface 2011-03-14 21:07:26 +01:00
proc.c MIPS: Probe for presence of KScratch registers. 2011-01-18 19:30:22 +01:00
process.c MIPS: Don't stomp on caller's ->regs[2] in copy_thread() 2010-12-16 18:10:52 +00:00
prom.c dt/flattree: Return virtual address from early_init_dt_alloc_memory_arch() 2011-01-15 22:01:58 -07:00
ptrace.c ptrace: cleanup arch_ptrace() on MIPS 2010-10-27 18:03:11 -07:00
ptrace32.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
r4k_fpu.S [MIPS] Check FCSR for pending interrupts, alternative version 2007-03-17 01:03:25 +00:00
r4k_switch.S MIPS: Consolidate all CONFIG_CPU_HAS_LLSC use in a single C file. 2009-09-17 20:07:49 +02:00
r2300_fpu.S
…
r2300_switch.S MIPS: Consolidate all CONFIG_CPU_HAS_LLSC use in a single C file. 2009-09-17 20:07:49 +02:00
r6000_fpu.S
…
relocate_kernel.S [MIPS] Kexec: Fix several 64-bit bugs. 2007-07-31 21:35:36 +01:00
reset.c [MIPS] Export pm_power_off 2006-12-10 21:52:11 +00:00
rtlx.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
scall32-o32.S Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus 2010-10-18 13:10:36 -07:00
scall64-64.S Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus 2010-10-18 13:10:36 -07:00
scall64-n32.S Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus 2010-10-20 13:18:21 -07:00
scall64-o32.S Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus 2010-10-20 13:18:21 -07:00
setup.c MIPS: Implement __read_mostly 2011-01-18 19:30:28 +01:00
signal-common.h MIPS: Move signal trampolines off of the stack. 2010-04-12 17:26:15 +01:00
signal.c MIPS: Fix GCC-4.6 'set but not used' warning in signal*.c 2011-03-14 21:07:25 +01:00
signal32.c MIPS: Fix GCC-4.6 'set but not used' warning in signal*.c 2011-03-14 21:07:25 +01:00
signal_n32.c MIPS: do_sigaltstack() expects userland pointers 2010-10-18 16:59:03 +01:00
smp-cmp.c cpumask: Use accessors for cpu_*_mask: mips 2009-09-24 09:34:48 +09:30
smp-mt.c MIPS: MT: Fix typo in comment. 2010-12-16 18:11:00 +00:00
smp-up.c cpumask: arch_send_call_function_ipi_mask: mips 2009-09-24 09:34:45 +09:30
smp.c MIPS: Move idle task creation to work queue 2011-03-14 21:07:27 +01:00
smtc-asm.S [MIPS] SMTC: Don't set and restore irqregs ptr from self_ipi. 2007-06-11 18:20:53 +01:00
smtc-proc.c [MIPS] SMP: Call platform methods via ops structure. 2008-01-29 10:14:57 +00:00
smtc.c Fix IRQ flag handling naming 2010-10-07 14:08:55 +01:00
spinlock_test.c MIPS: Crazy spinlock speed test. 2010-02-27 12:53:42 +01:00
spram.c MIPS: SPRAM: Clean up support code a little 2009-11-02 12:00:05 +01:00
stacktrace.c MIPS: Eleminate filenames from comments 2009-08-03 17:52:40 +01:00
sync-r4k.c MIPS: CMP: Update sync-r4k for current kernel 2009-07-03 15:45:27 +01:00
syscall.c MIPS: Remove unused code from arch/mips/kernel/syscall.c 2011-03-14 21:07:26 +01:00
time.c mips: Use generic mult/shift factor calculation for clocks 2009-11-13 20:46:24 +01:00
topology.c MIPS: Add arch generic CPU hotplug 2009-06-24 18:34:40 +01:00
traps.c MIPS: Use C0_KScratch (if present) to hold PGD pointer. 2011-01-18 19:30:22 +01:00
unaligned.c MIPS: add support for software performance events 2010-10-29 19:08:48 +01:00
vdso.c MIPS: Make init_vdso a subsys_initcall. 2010-07-26 19:08:16 +01:00
vmlinux.lds.S MIPS: Add generic support for multiple machines within a single kernel 2011-01-18 19:30:21 +01:00
vpe.c MIPS: Replace deprecated spinlock initialization 2011-03-14 21:07:24 +01:00
watch.c MIPS: Add HARDWARE_WATCHPOINTS definitions and support code. 2008-10-11 16:18:56 +01:00