diff options
| author | Richard Weinberger <richard@nod.at> | 2013-04-16 23:53:29 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2013-04-17 10:39:38 +0200 |
| commit | 8198c1696a2cd15d436ade172bfd8085f5f818d3 (patch) | |
| tree | caece15784505f1a19b49b643e6eef6c973af63a /arch/um | |
| parent | 2412aa1293a4159c610616305c17efd237c8208d (diff) | |
um: Use generic idle loop
Signed-off-by: Richard Weinberger <richard@nod.at>
Cc: user-mode-linux-devel@lists.sourceforge.net
Link: http://lkml.kernel.org/r/1366149209-24787-1-git-send-email-richard@nod.at
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/Kconfig.common | 1 | ||||
| -rw-r--r-- | arch/um/kernel/process.c | 27 |
2 files changed, 5 insertions, 23 deletions
diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common index bceee6623b0..57834067a51 100644 --- a/arch/um/Kconfig.common +++ b/arch/um/Kconfig.common @@ -12,6 +12,7 @@ config UML select GENERIC_CPU_DEVICES select GENERIC_IO select GENERIC_CLOCKEVENTS + select GENERIC_IDLE_LOOP select TTY # Needed for line.c config MMU diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c index b462b13c5ba..bbcef522bcb 100644 --- a/arch/um/kernel/process.c +++ b/arch/um/kernel/process.c @@ -210,33 +210,14 @@ void initial_thread_cb(void (*proc)(void *), void *arg) kmalloc_ok = save_kmalloc_ok; } -void default_idle(void) +void arch_cpu_idle(void) { unsigned long long nsecs; - while (1) { - /* endless idle loop with no priority at all */ - - /* - * although we are an idle CPU, we do not want to - * get into the scheduler unnecessarily. - */ - if (need_resched()) - schedule(); - - tick_nohz_idle_enter(); - rcu_idle_enter(); - nsecs = disable_timer(); - idle_sleep(nsecs); - rcu_idle_exit(); - tick_nohz_idle_exit(); - } -} - -void cpu_idle(void) -{ cpu_tasks[current_thread_info()->cpu].pid = os_getpid(); - default_idle(); + nsecs = disable_timer(); + idle_sleep(nsecs); + local_irq_enable(); } int __cant_sleep(void) { |