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| author | Julien Grall <julien.grall@linaro.org> | 2013-07-29 17:06:05 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-09-07 22:10:00 -0700 |
| commit | 9e50b358ed4b8af18955ab07549ee2264b5b44f2 (patch) | |
| tree | d24b94cc7e9f1eaff307d81e80ca1fb401e4ef83 | |
| parent | 39d163b38728dd85291afb2ba84f760368d9e8eb (diff) | |
| download | kernel-common-9e50b358ed4b8af18955ab07549ee2264b5b44f2.tar.gz kernel-common-9e50b358ed4b8af18955ab07549ee2264b5b44f2.tar.bz2 kernel-common-9e50b358ed4b8af18955ab07549ee2264b5b44f2.zip | |
xen/arm: missing put_cpu in xen_percpu_init
commit 0d7febe58413884f6428143221971618fbf3a47d upstream.
When CONFIG_PREEMPT is enabled, Linux will not be able to boot and warn:
[ 4.127825] ------------[ cut here ]------------
[ 4.133376] WARNING: at init/main.c:699 do_one_initcall+0x150/0x158()
[ 4.140738] initcall xen_init_events+0x0/0x10c returned with preemption imbalance
This is because xen_percpu_init uses get_cpu but doesn't have the corresponding
put_cpu.
Signed-off-by: Julien Grall <julien.grall@linaro.org>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/arm/xen/enlighten.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index 13609e01f4b7..05db95d010ae 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -170,6 +170,7 @@ static void __init xen_percpu_init(void *unused) per_cpu(xen_vcpu, cpu) = vcpup; enable_percpu_irq(xen_events_irq, 0); + put_cpu(); } static void xen_restart(char str, const char *cmd) |