[PATCH -v2 7/8] kexec jump: ftrace_enabled_save/restore

Huang Ying ying.huang at intel.com
Mon Aug 11 21:22:53 EDT 2008


Hi, Vivek,

On Mon, 2008-08-11 at 09:51 -0400, Vivek Goyal wrote:
[...]
> So you want to use a non-locked version from optimization point of view?
> So that we don't end up taking and release a lock?

Not from optimization point of view. machine_kexec() may be called from
crash_kexec(), where it is not permitted to take and release a lock.

Best Regards,
Huang Ying





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