fwu 871df85a59 ARM: 7544/1: Add BUG_ON when hlt counter is wrongly used ...

1. On ARM platform, "nohlt" can be used to prevent core from idle
   process, returning immediately.
2. There are two interfaces, exported for other modules, named
   "disable_hlt" and "enable_hlt" are used to enable/disable the
   cpuidle mechanism by increasing/decreasing "hlt_counter".
   Disable_hlt and enable_hlt are paired operation,
   when you first call disable_hlt and then enable_hlt, the
   semantics are right.
3. There is no obvious constraint to prevent user(driver/module)
   code to prevent the case that enable_hlt is ahead of disable_hlt,
   which is a fatal operation on kernel state change from user,
   and there is no any WARNING or notification if the case happens
   in current kernel code.
   This patch aims to report BUG when the case happens, just like
   what the kernel do when enable_irq is ahead of disable_irq.

Link: https://patchwork.kernel.org/patch/1527881/

Signed-off-by: fwu <fwu@marvell.com>
Signed-off-by: YiLu Mao <ylmao@marvell.com>
Signed-off-by: Ning Jiang <ning.jiang@marvell.com>
Acked-by: Nicolas Pitre
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2012-10-18 11:06:43 +01:00

..

.gitignore

…

arch_timer.c

ARM: 7538/1: delay: add registration mechanism for delay timer sources

2012-09-26 22:57:52 +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

…

asm-offsets.c

ARM: Don't unconditionally bloat thread_info

2012-08-29 11:18:17 +01:00

atags_compat.c

ARM: 7505/1: split out ATAGS parsing

2012-09-03 22:55:56 +01:00

atags_parse.c

ARM: 7505/1: split out ATAGS parsing

2012-09-03 22:55:56 +01:00

atags_proc.c

ARM: 7505/1: split out ATAGS parsing

2012-09-03 22:55:56 +01:00

atags.h

ARM: 7506/1: allow for ATAGS to be configured out when DT support is selected

2012-09-03 22:56:15 +01:00

bios32.c

ARM: soc: general cleanups

2012-10-01 18:19:05 -07:00

calls.S

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal

2012-10-10 12:02:25 +09:00

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: move debug macros to common location

2012-09-14 09:22:00 -05:00

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

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal

2012-10-13 10:05:52 +09:00

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

Merge branch 'fixes' into for-linus

2012-10-11 10:55:04 +01:00

hw_breakpoint.c

ARM: 7497/1: hw_breakpoint: allow single-byte watchpoints on all addresses

2012-08-25 09:15:23 +01:00

hyp-stub.S

ARM: virt: arch_timers: enable access to physical timers

2012-09-19 08:32:54 +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

machine_kexec.c

ARM: 7540/1: kexec: Check segment memory addresses

2012-09-26 22:58:39 +01:00

Makefile

Merge branch 'fixes' into for-linus

2012-10-11 10:55:04 +01:00

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_cpu.c

ARM: perf: move irq registration into pmu implementation

2012-08-23 11:35:52 +01:00

perf_event_v6.c

ARM: perf: prepare for moving CPU PMU code into separate file

2012-08-23 11:35:52 +01:00

perf_event_v7.c

ARM: perf: prepare for moving CPU PMU code into separate file

2012-08-23 11:35:52 +01:00

perf_event_xscale.c

ARM: perf: prepare for moving CPU PMU code into separate file

2012-08-23 11:35:52 +01:00

perf_event.c

ARM: perf: move irq registration into pmu implementation

2012-08-23 11:35:52 +01:00

pj4-cp0.c

arm: remove several unnecessary module.h include instances

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

process.c

ARM: 7544/1: Add BUG_ON when hlt counter is wrongly used

2012-10-18 11:06:43 +01:00

ptrace.c

ARM: 7525/1: ptrace: use updated syscall number for syscall auditing

2012-09-19 21:50:50 +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

Merge branches 'atags', 'cache-l2x0', 'clkdev', 'fixes', 'integrator', 'misc', 'opcodes' and 'syscall' into for-linus

2012-10-04 23:01:55 +01:00

setup.c

Merge branch 'fixes' into for-linus

2012-10-11 10:55:04 +01:00

signal.c

Uninclude linux/freezer.h

2012-10-01 09:58:18 -04:00

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

ARM: 7535/1: Reprogram smp_twd based on new common clk framework notifiers

2012-09-19 22:04:43 +01:00

smp.c

Merge branch 'fixes' into for-linus

2012-10-11 10:55:04 +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: kernel: update cpu_suspend code to use cache LoUIS operations

2012-09-25 11:20:26 +01:00

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: get rid of execve wrapper, switch to generic execve() implementation

2012-09-30 22:21:37 -04:00

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

…

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: use new LEDS CPU trigger stub to replace old one

2012-08-01 11:22:14 +08:00

topology.c

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

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

traps.c

ARM: 7526/1: traps: send SIGILL if get_user fails on undef handling path

2012-09-07 20:40:44 +01:00

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