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4f917ba3d5
linux/arch/powerpc/kernel
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Benjamin Herrenschmidt 4f917ba3d5 powerpc/ppc64: Use preempt_schedule_irq instead of preempt_schedule 
Based on an original patch by Valentine Barshak <vbarshak@ru.mvista.com>

Use preempt_schedule_irq to prevent infinite irq-entry and
eventual stack overflow problems with fast-paced IRQ sources.

This kind of problems has been observed on the PASemi Electra IDE
controller. We have to make sure we are soft-disabled before calling
preempt_schedule_irq and hard disable interrupts after that
to avoid unrecoverable exceptions.

This patch also moves the "clrrdi r9,r1,THREAD_SHIFT" out of
the #ifdef CONFIG_PPC_BOOK3E scope, since r9 is clobbered
and has to be restored in both cases.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-27 16:42:43 +11:00
..
vdso32 powerpc: Fix segment mapping in vdso32 2009-10-27 16:42:40 +11:00
vdso64 Use macros for .data.page_aligned section. 2009-09-21 06:27:08 +02:00
.gitignore
align.c powerpc: Keep track of emulated instructions 2009-05-21 15:44:26 +10:00
asm-offsets.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
audit.c
btext.c
cacheinfo.c
cacheinfo.h
clock.c
compat_audit.c
cpu_setup_6xx.S powerpc: Use names rather than numbers for SPRGs (v2) 2009-08-20 10:12:27 +10:00
cpu_setup_44x.S
cpu_setup_fsl_booke.S powerpc/fsl-booke: Enable L1 cache on e500v1/e500v2/e500mc CPUs 2009-06-15 21:45:30 -05:00
cpu_setup_pa6t.S
cpu_setup_ppc970.S
cputable.c powerpc/oprofile: Add ppc750 CL as supported by oprofile 2009-10-14 16:58:39 +11:00
crash_dump.c powerpc: Unify opcode definitions and support 2009-02-23 10:48:56 +11:00
crash.c
dbell.c powerpc: Add support for using doorbells for SMP IPI 2009-02-23 15:53:03 +11:00
dma-iommu.c powerpc: Change archdata dma_data to a union 2009-09-24 15:31:43 +10:00
dma-swiotlb.c powerpc: Handle SWIOTLB mapping error properly 2009-08-28 14:24:11 +10:00
dma.c powerpc: Rename get_dma_direct_offset get_dma_offset 2009-09-24 15:31:43 +10:00
entry_32.S powerpc: Use names rather than numbers for SPRGs (v2) 2009-08-20 10:12:27 +10:00
entry_64.S powerpc/ppc64: Use preempt_schedule_irq instead of preempt_schedule 2009-10-27 16:42:43 +11:00
exceptions-64e.S powerpc/book3e-64: Remove duplicated #include 2009-09-24 15:31:41 +10:00
exceptions-64s.S Merge commit 'paulus-perf/master' into next 2009-08-20 11:07:56 +10:00
firmware.c
fpu.S powerpc: Use names rather than numbers for SPRGs (v2) 2009-08-20 10:12:27 +10:00
ftrace.c Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-06-20 10:56:46 -07:00
head_8xx.S powerpc: Use names rather than numbers for SPRGs (v2) 2009-08-20 10:12:27 +10:00
head_32.S powerpc: Use names rather than numbers for SPRGs (v2) 2009-08-20 10:12:27 +10:00
head_40x.S powerpc: Use names rather than numbers for SPRGs (v2) 2009-08-20 10:12:27 +10:00
head_44x.S powerpc/mm: Cleanup handling of execute permission 2009-08-27 13:12:51 +10:00
head_64.S powerpc: Remaining 64-bit Book3E support 2009-08-20 10:25:11 +10:00
head_booke.h powerpc: Use names rather than numbers for SPRGs (v2) 2009-08-20 10:12:27 +10:00
head_fsl_booke.S powerpc/fsl-booke: Use HW PTE format if CONFIG_PTE_64BIT 2009-09-02 16:20:41 +10:00
ibmebus.c powerpc: use dma_map_ops struct 2009-08-28 14:24:10 +10:00
idle_6xx.S
idle_e500.S
idle_power4.S
idle.c
init_task.c Use new __init_task_data macro in arch init_task.c files. 2009-09-21 06:27:08 +02:00
io.c
iomap.c
iommu.c
irq.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
isa-bridge.c
kgdb.c powerpc/kgdb: Fix build failure caused by "kgdb.c: unused variable 'acc'" 2009-10-14 16:58:38 +11:00
kprobes.c
l2cr_6xx.S
legacy_serial.c
lparcfg.c powerpc/pseries: Fix to handle slb resize across migration 2009-09-02 16:19:01 +10:00
machine_kexec_32.c
machine_kexec_64.c Use new __init_task_data macro in arch init_task.c files. 2009-09-21 06:27:08 +02:00
machine_kexec.c powerpc: Allow mem=x cmdline to work with 4G+ 2009-05-15 16:43:41 +10:00
Makefile perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
misc_32.S powerpc: Fix __flush_icache_range on 44x 2009-08-27 13:12:52 +10:00
misc_64.S powerpc: Move VMX and VSX asm code to vector.S 2009-06-09 16:46:25 +10:00
misc.S
module_32.c
module_64.c powerpc: Unify opcode definitions and support 2009-02-23 10:48:56 +11:00
module.c module: cleanup FIXME comments about trimming exception table entries. 2009-06-12 21:47:05 +09:30
mpc7450-pmu.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
msi.c powerpc/PCI: include pci.h in powerpc MSI implementation 2009-03-25 08:54:29 -07:00
nvram_64.c
of_device.c powerpc/of: Fix usage of dev_set_name() in of_device_alloc() 2009-06-26 16:55:35 +10:00
of_platform.c powerpc/pci: Merge ppc32 and ppc64 versions of phb_scan() 2009-09-02 15:45:53 +10:00
paca.c powerpc: Add PACA fields specific to 64-bit Book3E processors 2009-08-20 10:25:08 +10:00
pci_32.c powerpc/pci: Merge ppc32 and ppc64 versions of phb_scan() 2009-09-02 15:45:53 +10:00
pci_64.c powerpc: Fix compile errors found by new ppc64e_defconfig 2009-10-27 16:42:41 +11:00
pci_dn.c powerpc/pci: Move pseries code into pseries platform specific area 2009-05-21 15:44:24 +10:00
pci_of_scan.c Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2009-09-16 07:49:54 -07:00
pci-common.c powerpc/pci: Fix MODPOST warning 2009-10-14 16:58:40 +11:00
perf_callchain.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
perf_event.c powerpc/perf_events: Fix priority of MSR HV vs PR bits 2009-10-27 16:42:38 +11:00
pmc.c
power4-pmu.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
power5-pmu.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
power5+-pmu.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
power6-pmu.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
power7-pmu.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
ppc32.h
ppc970-pmu.c perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
ppc_ksyms.c
ppc_save_regs.S
proc_ppc64.c
process.c powerpc: Fix compile errors found by new ppc64e_defconfig 2009-10-27 16:42:41 +11:00
prom_init_check.sh powerpc: Print linux_banner in prom_init 2009-03-11 17:11:33 +11:00
prom_init.c powerpc: Fix ibm,client-architecture-support printout 2009-09-24 15:31:47 +10:00
prom_parse.c powerpc: Fix of_node_put() exit path in of_irq_map_one() 2009-04-20 12:18:43 -06:00
prom.c powerpc: Shield code specific to 64-bit server processors 2009-06-09 16:47:38 +10:00
ptrace32.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
ptrace.c powerpc: Fix booke user_disable_single_step() 2009-07-15 17:41:45 +10:00
reloc_64.S
rtas_flash.c proc 2/2: remove struct proc_dir_entry::owner 2009-03-31 01:14:44 +04:00
rtas_pci.c powerpc/pci: Clean up direct access to sysdata by RTAS 2009-05-21 15:44:23 +10:00
rtas-proc.c
rtas-rtc.c
rtas.c powerpc/pseries: Fix to handle slb resize across migration 2009-09-02 16:19:01 +10:00
setup_32.c powerpc/nvram: Enable use Generic NVRAM driver for different size chips 2009-09-11 16:02:11 +10:00
setup_64.c powerpc: Fix compile errors found by new ppc64e_defconfig 2009-10-27 16:42:41 +11:00
setup-common.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus 2009-09-23 18:14:11 -07:00
setup.h
signal_32.c powerpc: Sanitize stack pointer in signal handling code 2009-03-27 16:58:24 +11:00
signal_64.c powerpc: Sanitize stack pointer in signal handling code 2009-03-27 16:58:24 +11:00
signal.c powerpc: Sanitize stack pointer in signal handling code 2009-03-27 16:58:24 +11:00
signal.h powerpc: Sanitize stack pointer in signal handling code 2009-03-27 16:58:24 +11:00
smp-tbsync.c
smp.c cpumask: Use accessors for cpu_*_mask: powerpc 2009-09-24 09:34:48 +09:30
softemu8xx.c
stacktrace.c
suspend.c
swsusp_32.S
swsusp_64.c
swsusp_asm64.S
swsusp.c
sys_ppc32.c headers: utsname.h redux 2009-09-23 18:13:10 -07:00
syscalls.c
sysfs.c powerpc: Fix bug where perf_counters breaks oprofile 2009-09-11 11:27:58 +10:00
systbl_chk.c
systbl_chk.sh
systbl.S
tau_6xx.c
time.c Merge branch 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-23 09:46:15 -07:00
traps.c powerpc: Add PTRACE_SINGLEBLOCK support 2009-06-09 13:29:25 +10:00
udbg_16550.c trivial: fix typo "for for" in multiple files 2009-09-21 15:14:54 +02:00
udbg.c powerpc/udbg: Fix lost byte during console handover; change LFCR to CRLF 2009-03-11 17:11:34 +11:00
vdso.c powerpc: Align vDSO base address 2009-10-27 16:42:40 +11:00
vecemu.c
vector.S powerpc: Use names rather than numbers for SPRGs (v2) 2009-08-20 10:12:27 +10:00
vio.c powerpc: Change archdata dma_data to a union 2009-09-24 15:31:43 +10:00
vmlinux.lds.S powerpc: warning: allocated section `.data_nosave' not in segment 2009-10-14 16:58:39 +11:00