Yang Wei ec756d45b7 MIPS: perf: Mark pmu interupt IRQF_NO_THREAD ...

In RT kernel, I ran into the following calltrace, so PMU interrupts cannot
be threaded

in_atomic(): 1, irqs_disabled(): 1, pid: 0, name: swapper/0
INFO: lockdep is turned off.
Call Trace:
[<ffffffff8088595c>] dump_stack+0x1c/0x50
[<ffffffff801a958c>] __might_sleep+0x13c/0x148
[<ffffffff80891c54>] rt_spin_lock+0x3c/0xb0
[<ffffffff801ad29c>] __wake_up+0x3c/0x80
[<ffffffff80243ba4>] perf_event_wakeup+0x8c/0xf8
[<ffffffff80243c50>] perf_pending_event+0x40/0x78
[<ffffffff8023d88c>] irq_work_run+0x74/0xc0
[<ffffffff80152640>] mipsxx_pmu_handle_shared_irq+0x110/0x228
[<ffffffff8015276c>] mipsxx_pmu_handle_irq+0x14/0x30
[<ffffffff801ffda4>] handle_irq_event_percpu+0xbc/0x470
[<ffffffff80204478>] handle_percpu_irq+0x98/0xc8
[<ffffffff801ff284>] generic_handle_irq+0x4c/0x68
[<ffffffff8089748c>] do_IRQ+0x2c/0x48
[<ffffffff80105864>] plat_irq_dispatch+0x64/0xd0

[ralf@linux-mips.org: I don't see why based on this register dump the
handler should be marked IRQF_NO_THREAD - but the handler is manipulating
per-CPU resources so we don't want it to be rescheduled to another CPU.]

Signed-off-by: Yang Wei <Wei.Yang@windriver.com>
Cc: a.p.zijlstra@chello.nl
Cc: paulus@samba.org
Cc: mingo@redhat.com
Cc: acme@kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7506/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2014-08-18 22:14:39 +02:00

..

.gitignore

…

8250-platform.c

mips: remove needless include of module.h from core kernel files.

2011-10-31 19:30:57 -04:00

asm-offsets.c

MIPS: save/restore MSACSR register on context switch

2014-08-02 00:06:43 +02:00

binfmt_elfn32.c

MIPS: Compat: Fix cputime_to_timeval() arguments in compat binfmt_elf.

2013-06-06 16:11:26 +02:00

binfmt_elfo32.c

MIPS: Remove old core dump functions

2014-08-02 00:06:37 +02:00

bmips_vec.S

MIPS: Fix gigaton of warning building with microMIPS.

2014-03-31 18:17:12 +02:00

branch.c

Merge branch '3.15-fixes' into mips-for-linux-next

2014-06-04 22:53:02 +02:00

cevt-bcm1480.c

MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code

2013-07-14 19:36:51 -04:00

cevt-ds1287.c

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

cevt-gic.c

MIPS: allow GIC clockevent device config from other CPUs

2014-05-02 16:39:11 +01:00

cevt-gt641xx.c

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

cevt-r4k.c

Merge branch 'wip-mips-pm' of https://github.com/paulburton/linux into mips-for-linux-next

2014-05-29 15:08:23 +02:00

cevt-sb1250.c

MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code

2013-07-14 19:36:51 -04:00

cevt-txx9.c

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

cps-vec.S

MIPS: smp-cps: duplicate core0 CCA on secondary cores

2014-05-28 16:20:33 +01:00

cpu-bugs64.c

MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code

2013-07-14 19:36:51 -04:00

cpu-probe.c

MIPS: detect presence of MAARs

2014-08-02 00:06:45 +02:00

crash_dump.c

mips: remove savemaxmem parameter setup

2013-07-03 16:08:03 -07:00

crash.c

mips: delete non-required instances of include <linux/init.h>

2014-01-24 22:39:56 +01:00

csrc-bcm1480.c

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

csrc-gic.c

MIPS: Refactor GIC clocksource code.

2013-05-09 17:55:20 +02:00

csrc-ioasic.c

MIPS: DECstation HRT initialization rearrangement

2013-09-13 11:56:13 +02:00

csrc-r4k.c

mips: convert to clocksource_register_hz/khz

2011-02-21 13:33:50 -08:00

csrc-sb1250.c

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

early_printk_8250.c

MIPS: Add 8250/16550 serial early printk driver

2013-10-29 21:24:36 +01:00

early_printk.c

early_printk: consolidate random copies of identical code

2013-04-29 18:28:13 -07:00

entry.S

MIPS: MT: Remove SMTC support

2014-05-24 00:07:01 +02:00

ftrace.c

Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

2014-08-07 08:47:00 -07:00

genex.S

MIPS: MT: Remove SMTC support

2014-05-24 00:07:01 +02:00

gpio_txx9.c

…

head.S

MIPS: MT: Remove SMTC support

2014-05-24 00:07:01 +02:00

i8253.c

MIPS: irq: Remove IRQF_DISABLED

2011-12-07 22:03:45 +00:00

i8259.c

MIPS: MT: Remove SMTC support

2014-05-24 00:07:01 +02:00

idle.c

Merge branch 'wip-mips-pm' of https://github.com/paulburton/linux into mips-for-linux-next

2014-05-29 15:08:23 +02:00

irq_cpu.c

MIPS: Panic messages should not end in \n.

2013-10-29 21:24:19 +01:00

irq_txx9.c

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

irq-gic.c

MIPS: GIC: Generalise check for pending interrupts

2014-08-02 00:06:41 +02:00

irq-gt641xx.c

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

irq-msc01.c

MIPS: MSC: Prevent out-of-bounds writes to MIPS SC ioremap'd region

2014-06-26 10:48:23 +01:00

irq-rm7000.c

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

irq.c

Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

2014-06-09 18:10:34 -07:00

jump_label.c

MIPS: jump label: Add MIPS support.

2011-01-18 19:30:24 +01:00

kgdb.c

MIPS: kernel: {ftrace,kgdb}: Set correct address limit for cache flushes

2014-03-26 23:09:18 +01:00

kprobes.c

kprobes/mips: Fix to check double free of insn slot

2013-05-22 12:48:30 +02:00

linux32.c

unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE

2013-05-09 13:46:38 -04:00

machine_kexec.c

MIPS: kdump: Add support

2012-12-13 16:46:47 +01:00

Makefile

MIPS: OCTEON: Enable use of FPU

2014-05-30 21:01:09 +02:00

mcount.S

Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

2014-08-07 08:47:00 -07:00

mips_ksyms.c

MIPS: checksum: Split the 'copy_user' symbol

2014-03-26 23:09:17 +01:00

mips_machine.c

MIPS: move mips_{set,get}_machine_name() to a more generic place

2013-05-08 01:19:07 +02:00

mips-cm.c

MIPS: Add generic CM probe & access code

2014-03-06 21:25:22 +01:00

mips-cpc.c

MIPS: smp-cps: rework core/VPE initialisation

2014-05-28 16:20:28 +01:00

mips-mt-fpaff.c

MIPS: MT: Remove SMTC support

2014-05-24 00:07:01 +02:00

mips-mt.c

MIPS: MT: Remove SMTC support

2014-05-24 00:07:01 +02:00

module-rela.c

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

module.c

MIPS: Use NUMA_NO_NODE instead of -1 for node ID.

2013-10-29 21:24:14 +01:00

octeon_switch.S

MIPS: OCTEON: Enable use of FPU

2014-05-30 21:01:09 +02:00

perf_event_mipsxx.c

MIPS: perf: Mark pmu interupt IRQF_NO_THREAD

2014-08-18 22:14:39 +02:00

perf_event.c

MIPS: perf: Reorganize contents of perf support files.

2011-10-24 23:34:26 +01:00

pm-cps.c

MIPS: {pm,smp}-cps: use cpu_vpe_id macro

2014-07-30 20:48:42 +02:00

pm.c

MIPS: PM: Implement PM helper macros

2014-05-02 16:39:10 +01:00

proc.c

MIPS: cpu: Add new cpu option for Hardware Table Walker.

2014-08-02 00:06:38 +02:00

process.c

MIPS: consistently clear MSA flags when starting & copying threads

2014-08-02 00:06:45 +02:00

prom.c

mips: convert fdt pointers to opaque pointers

2014-04-30 00:59:13 -05:00

ptrace32.c

MIPS: Remove asm/user.h

2014-08-02 00:06:37 +02:00

ptrace.c

Merge branch '3.16-fixes' into mips-for-linux-next

2014-08-02 00:07:03 +02:00

r4k_fpu.S

Revert "MIPS: Save/restore MSA context around signals"

2014-06-26 10:48:18 +01:00

r4k_switch.S

MIPS: init upper 64b of vector registers when MSA is first used

2014-08-02 00:06:44 +02:00

r2300_fpu.S

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

r2300_switch.S

MIPS: stack protector: Fix per-task canary switch

2013-10-07 15:31:04 +02:00

r6000_fpu.S

update David Miller's old email address

2011-04-06 06:19:38 -07:00

relocate_kernel.S

MIPS: kdump: Skip walking indirection page for crashkernels

2013-09-05 20:53:37 +02:00

reset.c

mips: migrate core kernel file from module.h --> export.h

2011-10-31 19:30:56 -04:00

rtlx-cmp.c

MIPS: APRP: Fix an issue when device_create() fails.

2014-08-01 17:30:35 +02:00

rtlx-mt.c

MIPS: APRP: Fix an issue when device_create() fails.

2014-08-01 17:30:35 +02:00

rtlx.c

MIPS: APRP: Code formatting clean-ups.

2014-01-22 20:19:02 +01:00

scall32-o32.S

Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

2014-08-07 08:47:00 -07:00

scall64-64.S

Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

2014-08-07 08:47:00 -07:00

scall64-n32.S

Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

2014-08-07 08:47:00 -07:00

scall64-o32.S

Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

2014-08-07 08:47:00 -07:00

segment.c

MIPS: Add debugfs file to print the segmentation control registers

2014-01-22 20:19:00 +01:00

setup.c

MIPS: Add NUMA support for Loongson-3

2014-07-30 21:46:19 +02:00

signal32.c

mips: Use sigsp()

2014-08-06 13:04:30 +02:00

signal_n32.c

mips: Use sigsp()

2014-08-06 13:04:30 +02:00

signal-common.h

mips: Use get_signal() signal_setup_done()

2014-08-06 13:03:08 +02:00

signal.c

mips: Use sigsp()

2014-08-06 13:04:30 +02:00

smp-bmips.c

MIPS: SMP: Remove plat_smp_ops cpus_done method.

2014-05-27 11:06:42 +02:00

smp-cmp.c

MIPS: SMP: Remove plat_smp_ops cpus_done method.

2014-05-27 11:06:42 +02:00

smp-cps.c

MIPS: smp-cps: Fix entry code cache flush for systems with coherent I/O

2014-07-30 20:49:36 +02:00

smp-gic.c

cpuidle: cpuidle-cps: add MIPS CPS cpuidle driver

2014-05-28 16:20:36 +01:00

smp-mt.c

MIPS: smp-mt: Fix link error when PROC_FS=n

2014-08-01 18:32:02 +02:00

smp-up.c

MIPS: SMP: Remove plat_smp_ops cpus_done method.

2014-05-27 11:06:42 +02:00

smp.c

MIPS: Support CPU topology files in sysfs

2014-07-30 21:45:39 +02:00

spinlock_test.c

mips: migrate core kernel file from module.h --> export.h

2011-10-31 19:30:56 -04:00

spram.c

MIPS: Use current_cpu_type() instead of c->cputype

2014-03-31 18:17:12 +02:00

stacktrace.c

mips: migrate core kernel file from module.h --> export.h

2011-10-31 19:30:56 -04:00

sync-r4k.c

MIPS: MT: Remove SMTC support

2014-05-24 00:07:01 +02:00

syscall.c

MIPS: Fix gigaton of warning building with microMIPS.

2014-03-31 18:17:12 +02:00

time.c

MIPS: MT: Remove SMTC support

2014-05-24 00:07:01 +02:00

topology.c

MIPS: Add arch generic CPU hotplug

2009-06-24 18:34:40 +01:00

traps.c

MIPS: disable preemption whilst initialising MSA

2014-08-02 00:06:44 +02:00

unaligned.c

MIPS: Remove BUG_ON(!is_fpu_owner()) in do_ade()

2014-07-30 21:30:22 +02:00

vdso.c

coredump: remove VM_ALWAYSDUMP flag

2012-03-23 16:58:42 -07:00

vmlinux.lds.S

MIPS: Discard .eh_frame sections in linker script.

2013-08-26 15:33:41 +02:00

vpe-cmp.c

MIPS: APRP: Add VPE loader support for CMP platforms.

2014-01-22 20:19:02 +01:00

vpe-mt.c

MIPS: MT: Remove SMTC support

2014-05-24 00:07:01 +02:00

vpe.c

Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

2014-01-30 17:20:32 -08:00

watch.c

MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code

2013-07-14 19:36:51 -04:00