mips: Use do_kernel_power_off()

Kernel now supports chained power-off handlers. Use do_kernel_power_off()
that invokes chained power-off handlers. It also invokes legacy
pm_power_off() for now, whic

mips: Use do_kernel_power_off()

Kernel now supports chained power-off handlers. Use do_kernel_power_off()
that invokes chained power-off handlers. It also invokes legacy
pm_power_off() for now, which will be removed once all drivers will
be converted to the new sys-off API.

Acked-by: Thomas Bogendoerfer <[email protected]>
Reviewed-by: Michał Mirosław <[email protected]>
Signed-off-by: Dmitry Osipenko <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>

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MIPS: Hang more efficiently on halt/powerdown/restart

The generic MIPS implementations of halting, powering down or restarting
the system all hang using a busy loop as a last resort. We have many
pl

MIPS: Hang more efficiently on halt/powerdown/restart

The generic MIPS implementations of halting, powering down or restarting
the system all hang using a busy loop as a last resort. We have many
platforms which avoid this loop by implementing their own, many using
some variation upon executing a wait instruction to lower CPU power
usage if we reach this point.

In order to prepare for cleaning up these various custom implementations
of the same thing, this patch makes the generic machine_halt(),
machine_power_off() & machine_restart() functions each make use of the
wait instruction to lower CPU power usage in cases where we know that
the wait instruction is available. If wait isn't known to be supported
then we fall back to calling cpu_wait(), and if we don't have a
cpu_wait() callback then we effectively continue using a busy loop.

In effect the new machine_hang() function provides a superset of the
functionality that the various platforms currently provide differing
subsets of.

Signed-off-by: Paul Burton <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/17178/
Signed-off-by: James Hogan <[email protected]>

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MIPS: Provide fallback reboot/poweroff/halt implementations

If a machine-specific hook is not implemented for restart, poweroff,
or halt, fall back to halting secondary CPUs, disabling interrupts,
a

MIPS: Provide fallback reboot/poweroff/halt implementations

If a machine-specific hook is not implemented for restart, poweroff,
or halt, fall back to halting secondary CPUs, disabling interrupts,
and spinning. In the case of restart, attempt to restart the system
via do_kernel_restart() (which will call any registered restart
handlers) before halting.

Signed-off-by: Andrew Bresticker <[email protected]>
Cc: James Hogan <[email protected]>
Cc: Maciej W. Rozycki <[email protected]>
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/9600/
Signed-off-by: Ralf Baechle <[email protected]>

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mips: migrate core kernel file from module.h --> export.h

These files are not modules, but were including module.h only for
EXPORT_SYMBOL and/or THIS_MODULE. Now that we have the lightweight
export

mips: migrate core kernel file from module.h --> export.h

These files are not modules, but were including module.h only for
EXPORT_SYMBOL and/or THIS_MODULE. Now that we have the lightweight
export.h, use it in these kinds of cases.

Signed-off-by: Paul Gortmaker <[email protected]>

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[MIPS] Export pm_power_off

This is required for ipmi_poweroff.c to work as a module.

Signed-off-by: Ralf Baechle <[email protected]>

[MIPS] Rename _machine_power_off to pm_power_off so the kernel builds again.

Signed-off-by: Ralf Baechle <[email protected]>

[MIPS] Check function pointers are non-zero before calling.

Several boards don't initialize the pointers, so let's play safe.

Signed-off-by: Ralf Baechle <[email protected]>

[MIPS] Revert "mips: add pm_power_off"

pm_power_off duplicates the functionality of _machine_restart.

This reverts b142159fa5ffbad73b6927fafa5440148030f3f1 commit.

[PATCH] mips: add pm_power_off

Adds pm_power_off() to MIPS.

Signed-off-by: Yoichi Yuasa <[email protected]>
Cc: Ralf Baechle <[email protected]>
Signed-off-by: Andrew Morton <akpm@osdl.

[PATCH] mips: add pm_power_off

Adds pm_power_off() to MIPS.

Signed-off-by: Yoichi Yuasa <[email protected]>
Cc: Ralf Baechle <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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[PATCH] Don't export machine_restart, machine_halt, or machine_power_off.

machine_restart, machine_halt and machine_power_off are machine
specific hooks deep into the reboot logic, that modules
have

[PATCH] Don't export machine_restart, machine_halt, or machine_power_off.

machine_restart, machine_halt and machine_power_off are machine
specific hooks deep into the reboot logic, that modules
have no business messing with. Usually code should be calling
kernel_restart, kernel_halt, kernel_power_off, or
emergency_restart. So don't export machine_restart,
machine_halt, and machine_power_off so we can catch buggy users.

Signed-off-by: Eric W. Biederman <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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Linux-2.6.12-rc2

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

Linux-2.6.12-rc2

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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