[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [RFC PATCH v4 5/9] cpufreq: cpufreq-cpu0: change cpus data path in devtree for hwdom kernel
On Tue, Nov 4, 2014 at 6:20 PM, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> wrote: > On Tue, 4 Nov 2014, Oleksandr Dmytryshyn wrote: >> All information needed for this driver about physical cpus >> now located in /hypervisor/pcpus node instead of the >> /cpus node in case if kernel is running as hardware domain. >> >> Signed-off-by: Oleksandr Dmytryshyn <oleksandr.dmytryshyn@xxxxxxxxxxxxxxx> >> --- >> drivers/cpufreq/cpufreq-cpu0.c | 10 +++++++++- >> 1 file changed, 9 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c >> index ef4fbc4..a83838b 100644 >> --- a/drivers/cpufreq/cpufreq-cpu0.c >> +++ b/drivers/cpufreq/cpufreq-cpu0.c >> @@ -21,6 +21,8 @@ >> #include <linux/regulator/consumer.h> >> #include <linux/slab.h> >> >> +#include <xen/xen.h> >> + >> static unsigned int transition_latency; >> static unsigned int voltage_tolerance; /* in percentage */ >> >> @@ -182,7 +184,13 @@ static int cpu0_cpufreq_probe(struct platform_device >> *pdev) >> struct device_node *np; >> int ret; >> >> - np = of_find_node_by_path("/cpus/cpu@0"); >> +#ifdef CONFIG_XEN_DOM0 > > the #ifdef is not necessary, xen_initial_domain() is always properly > defined I'll fix this in the next patch-set. >> + if (xen_initial_domain()) >> + np = of_find_node_by_path("/hypervisor/pcpus/cpu@0"); >> + else >> +#endif >> + np = of_find_node_by_path("/cpus/cpu@0"); >> if (!np) { >> pr_err("failed to find cpu0 node\n"); >> return -ENOENT; >> -- >> 1.9.1 >> _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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