lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

sparc64: Manage NMI watchdog enabling like x86.

Browse Source 
Use a per-cpu 'wd_enabled' boolean and a global atomic_t count
of watchdog NMI enabled cpus which is set to '-1' if something
is wrong with the watchdog and it can't be used.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2009-09-08 23:16:06 -07:00
parent 825c9fb47a
commit a8f2226455
3 changed files with 45 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/sparc/oprofile/init.c
View File

@ -57,7 +57,7 @@ static void timer_stop(void)
static int op_nmi_timer_init(struct oprofile_operations *ops)
{
if (!nmi_usable)
if (atomic_read(&nmi_active) <= 0)
return -ENODEV;
ops->start = timer_start;