ipmi: Don't initialize anything in the core until something uses it

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commit 913a89f009 upstream.

The IPMI driver was recently modified to use SRCU, but it turns out
this uses a chunk of percpu memory, even if IPMI is never used.

So modify thing to on initialize on the first use.  There was already
code to sort of handle this for handling init races, so piggy back
on top of that, and simplify it in the process.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Reported-by: Tejun Heo <tj@kernel.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org # 4.18
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Corey Minyard 2018-12-20 16:50:23 -06:00 • committed by Greg Kroah-Hartman

parent 542ee863f1

commit fca9f9b4c9

1 changed files with 80 additions and 63 deletions

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drivers/char/ipmi/ipmi_msghandler.c

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