openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

ARC: update some comments 

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2014-06-25 17:14:03 +05:30
parent 2b75c0f93e
commit c9a98e1849
2 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
arch/arc/kernel/time.c
View File

@ -144,12 +144,12 @@ static struct clocksource arc_counter = {
/********** Clock Event Device *********/
/*
* Arm the timer to interrupt after @limit cycles
* Arm the timer to interrupt after @cycles
* The distinction for oneshot/periodic is done in arc_event_timer_ack() below
*/
static void arc_timer_event_setup(unsigned int limit)
static void arc_timer_event_setup(unsigned int cycles)
{
write_aux_reg(ARC_REG_TIMER0_LIMIT, limit);
write_aux_reg(ARC_REG_TIMER0_LIMIT, cycles);
write_aux_reg(ARC_REG_TIMER0_CNT, 0); /* start from 0 */
write_aux_reg(ARC_REG_TIMER0_CTRL, TIMER_CTRL_IE | TIMER_CTRL_NH);
@ -168,6 +168,10 @@ static void arc_clkevent_set_mode(enum clock_event_mode mode,
{
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
/*
* At X Hz, 1 sec = 1000ms -> X cycles;
* 10ms -> X / 100 cycles
*/
arc_timer_event_setup(arc_get_core_freq() / HZ);
break;
case CLOCK_EVT_MODE_ONESHOT:

4
arch/arc/mm/tlbex.S
View File

@ -220,9 +220,9 @@ ex_saved_reg1:
.macro CONV_PTE_TO_TLB
and r3, r0, PTE_BITS_RWX ; r w x
lsl r2, r3, 3 ; r w x 0 0 0
lsl r2, r3, 3 ; r w x 0 0 0 (GLOBAL, kernel only)
and.f 0, r0, _PAGE_GLOBAL
or.z r2, r2, r3 ; r w x r w x
or.z r2, r2, r3 ; r w x r w x (!GLOBAL, user page)
and r3, r0, PTE_BITS_NON_RWX_IN_PD1 ; Extract PFN+cache bits from PTE
or r3, r3, r2