p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

x86/idle: Remove is_idle flag 

Upon removal of the idle_notifier, all accesses to the "is_idle" flag serve
no purpose.

Signed-off-by: Len Brown <len.brown@intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/e4a24197cf9c227fcd1ca2df09999eaec9052f49.1479449716.git.len.brown@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Len Brown 2016-11-18 01:23:19 -05:00 committed by Thomas Gleixner
parent 8e7a7ee9dd
commit f08b5fe2d4
1 changed files with 0 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
arch/x86/kernel/process.c
View File

@ -65,10 +65,6 @@ __visible DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, cpu_tss) = {
};
EXPORT_PER_CPU_SYMBOL(cpu_tss);
#ifdef CONFIG_X86_64
static DEFINE_PER_CPU(unsigned char, is_idle);
#endif
/*
* this gets called so that we can store lazy state into memory and copy the
* current task into the new thread.
@ -241,13 +237,10 @@ static inline void play_dead(void)
#ifdef CONFIG_X86_64
void enter_idle(void)
{
this_cpu_write(is_idle, 1);
}
static void __exit_idle(void)
{
if (x86_test_and_clear_bit_percpu(0, is_idle) == 0)
return;
}
/* Called from interrupts to signify idle end */