On Fri, Jul 18, 2014 at 11:07 PM, Mohammad Merajul Islam Molla <meraj.enigma@gmail.com> wrote:
Hello,
In drivers/cpuidle/cpuidle.c, there are two functions cpuidle_install_idle_handler & cpuidle_uninstall_idle_handler. The names seem confusing to me as they don't install any handler, rather set 'initialized' variable to 1/0.
In v3.0 kernel, these functions used to look as below where they installed and uninstalled some handler function -
void cpuidle_install_idle_handler(void) 123 { 124 if (enabled_devices && (pm_idle != cpuidle_idle_call)) { 125 /* Make sure all changes finished before we switch to new idle */ 126 smp_wmb(); 127 pm_idle = cpuidle_idle_call; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pm_idle is the callback handler, and it is assigned to cpuidle_idle_call. I think this what it means by "install"
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