Colin Cross 237ec6f2e5 ARM: 7486/1: sched_clock: update epoch_cyc on resume ...

Many clocks that are used to provide sched_clock will reset during
suspend.  If read_sched_clock returns 0 after suspend, sched_clock will
appear to jump forward.  This patch resets cd.epoch_cyc to the current
value of read_sched_clock during resume, which causes sched_clock() just
after suspend to return the same value as sched_clock() just before
suspend.

In addition, during the window where epoch_ns has been updated before
suspend, but epoch_cyc has not been updated after suspend, it is unknown
whether the clock has reset or not, and sched_clock() could return a
bogus value.  Add a suspended flag, and return the pre-suspend epoch_ns
value during this period.

The new behavior is triggered by calling setup_sched_clock_needs_suspend
instead of setup_sched_clock.

Signed-off-by: Colin Cross <ccross@android.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2012-08-11 09:15:58 +01:00

..

.gitignore

[ARM] 5194/1: update .gitignore

2008-08-12 19:54:09 +01:00

arch_timer.c

Merge branches 'audit', 'delay', 'fixes', 'misc' and 'sta2x11' into for-linus

2012-07-27 23:06:32 +01:00

armksyms.c

Merge branches 'audit', 'delay', 'fixes', 'misc' and 'sta2x11' into for-linus

2012-07-27 23:06:32 +01:00

arthur.c

[ARM] arm/kernel/arthur.c: add MODULE_LICENSE

2008-05-17 22:55:16 +01:00

asm-offsets.c

ARM: 7114/1: cache-l2x0: add resume entry for l2 in secure mode

2011-10-17 09:11:51 +01:00

atags.c

clean up atags exporting code

2008-05-30 10:33:49 +02:00

atags.h

…

bios32.c

Merge branch 'topic/sebastian-devinit-fixups' into next

2012-06-18 12:14:10 -06:00

calls.S

ARM: wire up process_vm_writev and process_vm_readv syscalls

2011-11-17 16:58:00 +00:00

compat.c

ARM: deprecate support for old way to pass kernel parameters

2010-07-07 16:38:36 +02:00

compat.h

ARM: deprecate support for old way to pass kernel parameters

2010-07-07 16:38:36 +02:00

cpuidle.c

cpuidle: Add common time keeping and irq enabling

2012-03-21 01:59:40 -04:00

crash_dump.c

crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn

2011-03-23 19:47:19 -07:00

debug.S

ARM: cleanups of io includes

2012-03-29 18:02:10 -07:00

devtree.c

arm: convert core files from module.h to export.h

2011-10-31 19:30:49 -04:00

dma-isa.c

ARM: dma-isa: request cascade channel after registering it

2009-12-24 18:34:08 +00:00

dma.c

locking, ARM: Annotate low level hw locks as raw

2011-09-13 11:12:14 +02:00

early_printk.c

ARM: Add an earlyprintk debug console

2009-12-09 10:02:18 +00:00

elf.c

Disintegrate asm/system.h for ARM

2012-03-28 18:30:01 +01:00

entry-armv.S

ARM: Fix undefined instruction exception handling

2012-07-31 12:04:30 +01:00

entry-common.S

ARM: 7475/1: sys_trace: allow all syscall arguments to be updated via ptrace

2012-07-28 11:11:53 +01:00

entry-header.S

Merge branch 'devel-stable' into for-next

2011-07-22 23:09:07 +01:00

etm.c

arm: fix implicit module.h users by adding it to arch/arm as required.

2011-10-31 19:30:50 -04:00

fiq.c

ARM: fiq: change FIQ_START to a variable

2012-07-01 21:59:19 +08:00

fiqasm.S

ARM: 6938/1: fiq: Refactor {get,set}_fiq_regs() for Thumb-2

2011-05-26 10:31:06 +01:00

ftrace.c

ARM: 7468/1: ftrace: Trace function entry before updating index

2012-07-31 10:30:42 +01:00

head-common.S

arm/dt: Make __vet_atags also accept a dtb image

2011-05-11 15:12:32 +02:00

head-nommu.S

ARM: move CP15 definitions to separate header file

2012-03-28 18:30:01 +01:00

head.S

ARM: 7439/1: head.S: simplify initial page table mapping

2012-07-09 17:39:39 +01:00

hw_breakpoint.c

Disintegrate asm/system.h for ARM

2012-03-28 18:30:01 +01:00

insn.c

ARM: fix missing bug.h include in arch/arm/kernel/insn.c

2012-03-30 11:51:46 +01:00

insn.h

ARM: 7334/1: add jump label support

2012-03-24 09:38:56 +00:00

io.c

arm: convert core files from module.h to export.h

2011-10-31 19:30:49 -04:00

irq.c

ARM: at91: aic can use fast eoi handler type

2012-07-02 14:26:57 +02:00

isa.c

sysctl: Drop & in front of every proc_handler.

2009-11-18 08:37:40 -08:00

iwmmxt.S

ARM: pxa: fix logic error in PJ4 iWMMXt handling

2011-08-11 10:10:26 +08:00

jump_label.c

ARM: 7334/1: add jump label support

2012-03-24 09:38:56 +00:00

kgdb.c

kgdb,arm: fix register dump

2010-10-29 13:14:40 -05:00

kprobes-arm.c

ARM: 7181/1: Restrict kprobes probing SWP instructions to ARMv5 and below

2011-11-30 23:54:54 +00:00

kprobes-common.c

Disintegrate asm/system.h for ARM

2012-03-28 18:30:01 +01:00

kprobes-test-arm.c

ARM: 7440/1: kprobes: only test 'sub pc, pc, #1b-2b+8-2' on ARMv6

2012-07-05 12:57:16 +01:00

kprobes-test-thumb.c

ARM: 7174/1: Fix build error in kprobes test code on Thumb2 kernels

2011-11-26 21:58:53 +00:00

kprobes-test.c

ARM: 7209/1: Use generic ARM instruction set condition code checks for kprobes.

2011-12-13 08:52:03 +00:00

kprobes-test.h

ARM: 7174/1: Fix build error in kprobes test code on Thumb2 kernels

2011-11-26 21:58:53 +00:00

kprobes-thumb.c

ARM: 7423/1: kprobes: run t32_simulate_ldr_literal() without insn slot

2012-06-14 15:11:44 +01:00

kprobes.c

Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1

2012-04-02 08:53:24 -07:00

kprobes.h

ARM: kprobes: Add exports for test code

2011-09-20 18:17:43 +00:00

leds.c

arm: leds: convert sysdev_class to a regular subsystem

2011-12-21 15:52:57 -08:00

machine_kexec.c

Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm

2012-03-29 16:53:48 -07:00

Makefile

Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-05-21 19:43:57 -07:00

module.c

ARM: 7059/1: LPAE: Use PMD_(SHIFT|SIZE|MASK) instead of PGDIR_*

2011-08-23 15:30:33 +01:00

opcodes.c

ARM: 7206/1: Add generic ARM instruction set condition code checks.

2011-12-13 08:52:02 +00:00

patch.c

ARM: 7332/1: extract out code patch function from kprobes

2012-03-24 09:38:55 +00:00

patch.h

ARM: 7332/1: extract out code patch function from kprobes

2012-03-24 09:38:55 +00:00

perf_event_v6.c

ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration

2012-07-09 17:41:10 +01:00

perf_event_v7.c

ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration

2012-07-09 17:41:10 +01:00

perf_event_xscale.c

ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration

2012-07-09 17:41:10 +01:00

perf_event.c

Merge branches 'audit', 'delay', 'fixes', 'misc' and 'sta2x11' into for-linus

2012-07-27 23:06:32 +01:00

pj4-cp0.c

arm: remove several unnecessary module.h include instances

2011-10-31 19:30:48 -04:00

pmu.c

ARM: PMU: re-export release_pmu symbol to modules

2011-11-16 10:06:42 +00:00

process.c

ARM: 7466/1: disable interrupt before spinning endlessly

2012-07-31 10:30:31 +01:00

ptrace.c

ARM: 7474/1: get rid of TIF_SYSCALL_RESTARTSYS

2012-07-28 11:11:52 +01:00

relocate_kernel.S

ARM: 7065/1: kexec: ensure new kernel is entered in ARM state

2011-08-28 10:39:41 +01:00

return_address.c

arm: convert core files from module.h to export.h

2011-10-31 19:30:49 -04:00

sched_clock.c

ARM: 7486/1: sched_clock: update epoch_cyc on resume

2012-08-11 09:15:58 +01:00

setup.c

ARM: 7465/1: Handle >4GB memory sizes in device tree and mem=size@start option

2012-07-29 22:19:14 +01:00

signal.c

ARM: 7474/1: get rid of TIF_SYSCALL_RESTARTSYS

2012-07-28 11:11:52 +01:00

signal.h

ARM: 7471/1: Revert "7442/1: Revert "remove unused restart trampoline""

2012-07-28 11:11:51 +01:00

sleep.S

Disintegrate asm/system.h for ARM

2012-03-28 18:30:01 +01:00

smp_scu.c

ARM: 7347/1: SCU: use cpu_logical_map for per-CPU low power mode

2012-04-28 17:31:37 +01:00

smp_tlb.c

smp: introduce a generic on_each_cpu_mask() function

2012-03-28 17:14:35 -07:00

smp_twd.c

Revert "ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus"

2012-04-19 19:35:10 +01:00

smp.c

ARM: 7480/1: only call smp_send_stop() on SMP

2012-07-31 10:30:44 +01:00

stacktrace.c

arm: convert core files from module.h to export.h

2011-10-31 19:30:49 -04:00

suspend.c

ARM: suspend: use idmap_pgd instead of suspend_pgd

2011-12-06 14:04:14 +00:00

swp_emulate.c

ARM: 7208/1: Add condition code checking to SWP emulation handler.

2011-12-13 08:52:03 +00:00

sys_arm.c

ARM: 7410/1: Add extra clobber registers for assembly in kernel_execve

2012-05-05 13:54:01 +01:00

sys_oabi-compat.c

userns: Convert stat to return values mapped from kuids and kgids

2012-05-15 14:08:35 -07:00

tcm.c

Disintegrate asm/system.h for ARM

2012-03-28 18:30:01 +01:00

tcm.h

ARM: 5580/2: ARM TCM (Tightly-Coupled Memory) support v3

2009-09-15 22:11:05 +01:00

thumbee.c

ARM: 7385/1: ThumbEE: Use cpuid macros to read ID_PFR0 for ThumbEE

2012-04-25 19:49:26 +01:00

time.c

ARM: 7413/1: move read_{boot,persistent}_clock to the architecture level

2012-05-06 11:09:21 +01:00

topology.c

ARM: 7482/1: topology: fix section mismatch warning for init_cpu_topology

2012-08-11 09:15:56 +01:00

traps.c

Merge branch 'audit' of git://git.linaro.org/people/rmk/linux-arm

2012-08-01 16:35:37 -07:00

unwind.c

ARM: unwinder: fix bisection to find origin in .idx section

2011-12-15 14:02:19 -08:00

vmlinux.lds.S

ARM: 7428/1: Prevent KALLSYM size mismatch on ARM.

2012-06-22 22:54:18 +01:00

xscale-cp0.c

arm: remove several unnecessary module.h include instances

2011-10-31 19:30:48 -04:00