diff options
| author | Varun Wadekar <vwadekar@nvidia.com> | 2012-03-27 17:26:39 +0530 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-04-05 17:52:25 -0700 |
| commit | 46d9f14943770c24603ef7cdfd8eb2dbcd3c1248 (patch) | |
| tree | c8aa28791f49856d583e83831d2aab328e3e821f /arch/arm/mm/proc-xsc3.S | |
| parent | 55f0f45a45263ba26bd473f50f867d29dd836e46 (diff) | |
ARM: pm: only use preallocated page table during resume
Only use the preallocated page table during the resume, not while
suspending. This avoids the overhead of having to switch unnecessarily
to the resume page table in the suspend path.
Change-Id: Ib71c9b60b0ec39749aadc6f592549d213e6a852e
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Reviewed-on: http://git-master/r/85725
Reviewed-by: Automatic_Commit_Validation_User
Diffstat (limited to 'arch/arm/mm/proc-xsc3.S')
| -rw-r--r-- | arch/arm/mm/proc-xsc3.S | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/arch/arm/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S index f6607d315307..5ae0db4f44bd 100644 --- a/arch/arm/mm/proc-xsc3.S +++ b/arch/arm/mm/proc-xsc3.S @@ -406,24 +406,23 @@ ENTRY(cpu_xsc3_set_pte_ext) .align .globl cpu_xsc3_suspend_size -.equ cpu_xsc3_suspend_size, 4 * 7 +.equ cpu_xsc3_suspend_size, 4 * 6 #ifdef CONFIG_PM_SLEEP ENTRY(cpu_xsc3_do_suspend) - stmfd sp!, {r4 - r10, lr} + stmfd sp!, {r4 - r9, lr} mrc p14, 0, r4, c6, c0, 0 @ clock configuration, for turbo mode mrc p15, 0, r5, c15, c1, 0 @ CP access reg mrc p15, 0, r6, c13, c0, 0 @ PID mrc p15, 0, r7, c3, c0, 0 @ domain ID - mrc p15, 0, r8, c2, c0, 0 @ translation table base addr - mrc p15, 0, r9, c1, c0, 1 @ auxiliary control reg - mrc p15, 0, r10, c1, c0, 0 @ control reg + mrc p15, 0, r8, c1, c0, 1 @ auxiliary control reg + mrc p15, 0, r9, c1, c0, 0 @ control reg bic r4, r4, #2 @ clear frequency change bit - stmia r0, {r4 - r10} @ store cp regs - ldmia sp!, {r4 - r10, pc} + stmia r0, {r4 - r9} @ store cp regs + ldmia sp!, {r4 - r9, pc} ENDPROC(cpu_xsc3_do_suspend) ENTRY(cpu_xsc3_do_resume) - ldmia r0, {r4 - r10} @ load cp regs + ldmia r0, {r4 - r9} @ load cp regs mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I & D caches, BTB mcr p15, 0, ip, c7, c10, 4 @ drain write (&fill) buffer @@ -433,9 +432,10 @@ ENTRY(cpu_xsc3_do_resume) mcr p15, 0, r5, c15, c1, 0 @ CP access reg mcr p15, 0, r6, c13, c0, 0 @ PID mcr p15, 0, r7, c3, c0, 0 @ domain ID - mcr p15, 0, r8, c2, c0, 0 @ translation table base addr - mcr p15, 0, r9, c1, c0, 1 @ auxiliary control reg - mov r0, r10 @ control register + orr r1, r1, #0x18 @ cache the page table in L2 + mcr p15, 0, r1, c2, c0, 0 @ translation table base addr + mcr p15, 0, r8, c1, c0, 1 @ auxiliary control reg + mov r0, r9 @ control register b cpu_resume_mmu ENDPROC(cpu_xsc3_do_resume) #endif |