iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
linux/arch/mips/kernel
History
Alex Smith 57c7ea513f MIPS: ptrace: Avoid smp_processor_id() in preemptible code 
ptrace_{get,set}_watch_regs access current_cpu_data to get the watch
register count/masks, which calls smp_processor_id(). However they are
run in preemptible context and therefore trigger warnings like so:

[ 6340.092000] BUG: using smp_processor_id() in preemptible [00000000] code: gdb/367
[ 6340.092000] caller is ptrace_get_watch_regs+0x44/0x220

Since the watch register count/masks should be the same across all
CPUs, use boot_cpu_data instead. Note that this may need to change in
future should a heterogenous system be supported where the count/masks
are not the same across all CPUs (the current code is also incorrect
for this scenario - current_cpu_data here would not necessarily be
correct for the CPU that the target task will execute on).

Signed-off-by: Alex Smith <alex.smith@imgtec.com>
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6879/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-28 10:54:41 +02:00
..
.gitignore
[MIPS] Ignore vmlinux.lds generated files
2008-08-26 09:10:27 +01:00
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 MSA context around signals
2014-03-26 23:09:11 +01:00
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: Support for 64-bit FP with O32 binaries
2014-01-13 23:40:56 +01:00
bmips_vec.S
MIPS: Fix gigaton of warning building with microMIPS.
2014-03-31 18:17:12 +02:00
branch.c
MIPS: Fix branch emulation of branch likely instructions.
2014-05-23 01:00:26 +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: Delete __cpuinit/__CPUINIT usage from MIPS code
2013-07-14 19:36:51 -04:00
cevt-gt641xx.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
cevt-r4k.c
MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code
2013-07-14 19:36:51 -04:00
cevt-sb1250.c
MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code
2013-07-14 19:36:51 -04:00
cevt-smtc.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: Coherent Processing System SMP implementation
2014-03-26 23:00:12 +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: Fix core number detection for MT cores
2014-03-31 18:17:12 +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
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
2012-12-12 12:22:13 -08:00
ftrace.c
Most of the changes were largely clean ups, and some documentation.
2014-04-03 10:26:31 -07:00
genex.S
MIPS: Fix gigaton of warning building with microMIPS.
2014-03-31 18:17:12 +02:00
gpio_txx9.c
…
head.S
MIPS: malta: Add support for SMP EVA
2014-03-26 23:09:20 +01:00
i8253.c
MIPS: irq: Remove IRQF_DISABLED
2011-12-07 22:03:45 +00:00
i8259.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
idle.c
MIPS: Fix gigaton of warning building with microMIPS.
2014-03-31 18:17:12 +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: Remove gcmpregs.h
2014-03-26 23:09:07 +01:00
irq-gt641xx.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
irq-msc01.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
irq-rm7000.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
irq.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
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: Coherent Processing System SMP implementation
2014-03-26 23:00:12 +01:00
mcount.S
MIPS: Ftrace: Fix function tracing return address to match
2013-09-03 14:46:27 +02:00
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: Add CPC probe, access functions
2014-03-06 21:25:23 +01:00
mips-mt-fpaff.c
sched: Rename sched.c as sched/core.c in comments and Documentation
2013-06-19 12:58:42 +02:00
mips-mt.c
Merge branch 'master' into for-next
2012-04-08 21:48:52 +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: stack protector: Fix per-task canary switch
2013-10-07 15:31:04 +02:00
perf_event_mipsxx.c
MIPS: perf: Add interAptiv support
2014-03-31 18:17:12 +02:00
perf_event.c
MIPS: perf: Reorganize contents of perf support files.
2011-10-24 23:34:26 +01:00
proc.c
Revert "MIPS: MT: proc: Add support for printing VPE and TC ids"
2014-05-13 00:29:33 +02:00
process.c
MIPS: Basic MSA context switching support
2014-03-26 23:09:10 +01:00
prom.c
mips: use common of_flat_dt_get_machine_name
2013-10-09 20:03:57 -05:00
ptrace32.c
MIPS: Simplify PTRACE_PEEKUSR for FPC_EIR
2014-03-31 18:17:12 +02:00
ptrace.c
MIPS: ptrace: Avoid smp_processor_id() in preemptible code
2014-05-28 10:54:41 +02:00
r4k_fpu.S
Merge branch '3.14-fixes' into mips-for-linux-next
2014-03-31 18:17:33 +02:00
r4k_switch.S
MIPS: Fix gigaton of warning building with microMIPS.
2014-03-31 18:17:12 +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: Unregister rtlx interrupt hook at module exit
2014-03-06 20:55:07 +01:00
rtlx-mt.c
MIPS: APRP: Unregister rtlx interrupt hook at module exit
2014-03-06 20:55:07 +01:00
rtlx.c
MIPS: APRP: Code formatting clean-ups.
2014-01-22 20:19:02 +01:00
scall32-o32.S
MIPS: Wire up renameat2 syscall.
2014-05-13 17:57:33 +02:00
scall64-64.S
MIPS: Wire up renameat2 syscall.
2014-05-13 17:57:33 +02:00
scall64-n32.S
MIPS: Wire up renameat2 syscall.
2014-05-13 17:57:33 +02:00
scall64-o32.S
MIPS: Wire up renameat2 syscall.
2014-05-13 17:57:33 +02:00
segment.c
MIPS: Add debugfs file to print the segmentation control registers
2014-01-22 20:19:00 +01:00
setup.c
MIPS: Fix start of free memory when using initrd
2013-10-29 21:24:23 +01:00
signal32.c
MIPS: Save/restore MSA context around signals
2014-03-26 23:09:11 +01:00
signal_n32.c
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
2013-03-02 07:44:16 -08:00
signal-common.h
most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from set
2012-06-01 12:58:51 -04:00
signal.c
MIPS: kernel: signal: Prevent save/restore FPU context in user memory
2014-03-26 23:09:17 +01:00
smp-bmips.c
MIPS: BMIPS: change compile time checks to runtime checks
2014-01-22 20:18:51 +01:00
smp-cmp.c
MIPS: smp-cmp: Remove incorrect core number probe
2014-03-31 18:17:12 +02:00
smp-cps.c
MIPS: Coherent Processing System SMP implementation
2014-03-26 23:00:12 +01:00
smp-gic.c
MIPS: Move GIC IPI functions out of smp-cmp.c
2014-03-06 21:25:22 +01:00
smp-mt.c
MIPS: smp-mt: Use common GIC IPI implementation
2014-03-31 18:17:12 +02:00
smp-up.c
MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code
2013-07-14 19:36:51 -04:00
smp.c
MIPS: SMP: kill redundant call of generic_smp_call_function_single_interrupt()
2013-10-29 21:23:45 +01:00
smtc-asm.S
MIPS: microMIPS: Add support for exception handling.
2013-05-09 17:55:18 +02:00
smtc-proc.c
MIPS: MT: proc: Add support for printing VPE and TC ids
2014-03-31 18:17:12 +02:00
smtc.c
mips: Use the core irq stats function
2014-03-04 17:37:53 +01:00
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: delete non-required instances of include <linux/init.h>
2014-01-24 22:39:56 +01:00
syscall.c
MIPS: Fix gigaton of warning building with microMIPS.
2014-03-31 18:17:12 +02:00
time.c
MIPS: Optimize current_cpu_type() for better code.
2013-09-17 18:50:53 +02:00
topology.c
MIPS: Add arch generic CPU hotplug
2009-06-24 18:34:40 +01:00
traps.c
MIPS: Fix typo when reporting cache and ftlb errors for ImgTec cores
2014-05-25 12:45:06 +02:00
unaligned.c
MIPS: kernel: unaligned: Handle unaligned accesses for EVA
2014-03-26 23:09:16 +01:00
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: APRP: Code formatting clean-ups.
2014-01-22 20:19:02 +01:00
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