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author | Haavard Skinnemoen <hskinnemoen@atmel.com> | 2008-02-15 13:38:40 (GMT) |
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committer | Haavard Skinnemoen <hskinnemoen@atmel.com> | 2008-02-15 13:55:10 (GMT) |
commit | d45ad06273f797f6239b97fd9962ecd81eec847f (patch) | |
tree | ad601f9ef094dd43fc5fd06a163e79df90dc8f4a /arch/avr32 | |
parent | f059267e7fa9e3efa1498eb963ba18ec25665c42 (diff) | |
download | linux-fsl-qoriq-d45ad06273f797f6239b97fd9962ecd81eec847f.tar.xz |
avr32: Call tick_nohz_{stop,restart}_sched_tick() in idle loop
This fixes a hang on boot with nohz enabled. nohz is not actually
supported in mainline yet, but patches that add support for it are
currently under review.
When nohz is compiled out, the functions are no-ops, so this patch
results in no functional change, but it arguably makes the code more
correct.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Diffstat (limited to 'arch/avr32')
-rw-r--r-- | arch/avr32/kernel/process.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/avr32/kernel/process.c b/arch/avr32/kernel/process.c index eaaa69b..faf8d0e 100644 --- a/arch/avr32/kernel/process.c +++ b/arch/avr32/kernel/process.c @@ -11,6 +11,7 @@ #include <linux/fs.h> #include <linux/ptrace.h> #include <linux/reboot.h> +#include <linux/tick.h> #include <linux/uaccess.h> #include <linux/unistd.h> @@ -30,8 +31,10 @@ void cpu_idle(void) { /* endless idle loop with no priority at all */ while (1) { + tick_nohz_stop_sched_tick(); while (!need_resched()) cpu_idle_sleep(); + tick_nohz_restart_sched_tick(); preempt_enable_no_resched(); schedule(); preempt_disable(); |