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e3d9c625 (ARM: CPU hotplug: fix hard-coded control register constants)
changed the wrong constants in the hotplug assembly code. Fix this.
Reported-by: viresh kumar <viresh.kumar@st.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Use the definition we've provided in asm/system.h rather than
numeric constants.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The original scheme for reporting spurious wakeups was broken - it
tried to use printk() from a context which wasn't coherent with the
other CPUs, which risks corrupting the printk() data.
Fix this by noting the number spurious wakeups, and only report them
when we are properly woken - when we will be coherent with the rest
of the system.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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platform_cpu_die() is entered from the CPU's own idle thread, which
can not be migrated to other CPUs. Moreover, the 'cpu' argument
comes from the thread info, which will always be the 'current'
CPU. So remove this useless bug check.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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We always need to wait for the dying CPU to reach a safe state before
taking it down, irrespective of the requirements of the platform.
Move the completion code into the ARM SMP hotplug code rather than
having each platform re-implement this.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
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