diff options
| author |   Joao Martins <joao.m.martins@oracle.com> | 2019-09-02 11:40:31 +0100 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-09-03 09:36:36 +0200 |
| commit | 97d3eb9da84cae0548359b0aecb8619faad003b7 (patch) | |
| tree | 69c7f83cbc5a28db819ff39b31ddb4917ef600fb /include/linux/cpuidle_haltpoll.h | |
| parent | cpuidle: teo: Get rid of redundant check in teo_update() (diff) | |
| download | wireguard-linux-97d3eb9da84cae0548359b0aecb8619faad003b7.tar.xz wireguard-linux-97d3eb9da84cae0548359b0aecb8619faad003b7.zip | |
cpuidle-haltpoll: vcpu hotplug support
When cpus != maxcpus cpuidle-haltpoll will fail to register all vcpus
past the online ones and thus fail to register the idle driver.
This is because cpuidle_add_sysfs() will return with -ENODEV as a
consequence from get_cpu_device() return no device for a non-existing
CPU.
Instead switch to cpuidle_register_driver() and manually register each
of the present cpus through cpuhp_setup_state() callbacks and future
ones that get onlined or offlined. This mimmics similar logic that
intel_idle does.
Fixes: fa86ee90eb11 ("add cpuidle-haltpoll driver")
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/cpuidle_haltpoll.h')
| -rw-r--r-- | include/linux/cpuidle_haltpoll.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/cpuidle_haltpoll.h b/include/linux/cpuidle_haltpoll.h index fe5954c2409e..d50c1e0411a2 100644 --- a/include/linux/cpuidle_haltpoll.h +++ b/include/linux/cpuidle_haltpoll.h @@ -5,11 +5,11 @@ #ifdef CONFIG_ARCH_CPUIDLE_HALTPOLL #include <asm/cpuidle_haltpoll.h> #else -static inline void arch_haltpoll_enable(void) +static inline void arch_haltpoll_enable(unsigned int cpu) { } -static inline void arch_haltpoll_disable(void) +static inline void arch_haltpoll_disable(unsigned int cpu) { } #endif |