The function tboot_wait_for_aps is not called in atomic context. Thus mdelay can be replaced with usleep_range, to reduce busy wait.
Signed-off-by: Jia-Ju Bai <[email protected]> --- arch/x86/kernel/tboot.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c index a4eb279..c1d523e 100644 --- a/arch/x86/kernel/tboot.c +++ b/arch/x86/kernel/tboot.c @@ -317,7 +317,7 @@ static int tboot_wait_for_aps(int num_aps) timeout = AP_WAIT_TIMEOUT*HZ; while (atomic_read((atomic_t *)&tboot->num_in_wfs) != num_aps && timeout) { - mdelay(1); + usleep_range(1000, 2000); timeout--; } -- 1.7.9.5
