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The uapi/asm/unistd_32.h and asm/syscall_table_32.h headers can now be
generated from scripts/syscall.tbl, which makes this consistent with
the other architectures that have their own syscall.tbl.
csky has two architecture specific system calls, which I add to
the generic table. The time32, stat64 and rlimit entries in the
syscall_abis_32 line are for system calls that were part of the generic
ABI when arch/csky got added but are no longer enabled by default for
new architectures.
Both the user visible side of asm/unistd.h and the internal syscall
table in the kernel should have the same effective contents after this.
Signed-off-by: Arnd Bergmann <[email protected]>
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The asm/gpio.h header is gone now that all architectures just use
gpiolib, and so the redirect is no longer valid.
Acked-by: Guo Ren <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
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Enable qspinlock by the requirements mentioned in a8ad07e5240c9
("asm-generic: qspinlock: Indicate the use of mixed-size atomics").
C-SKY only has "ldex/stex" for all atomic operations. So csky give a
strong forward guarantee for "ldex/stex." That means when ldex grabbed
the cache line into $L1, it would block other cores from snooping the
address with several cycles. The atomic_fetch_add & xchg16 has the same
forward guarantee level in C-SKY.
Qspinlock has better code size and performance in a fast path.
Signed-off-by: Guo Ren <[email protected]>
Signed-off-by: Guo Ren <[email protected]>
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There is no benefit from custom implementation for ticket-spinlock,
so move to generic ticket-spinlock for easy maintenance.
Signed-off-by: Guo Ren <[email protected]>
Reviewed-by: Arnd Bergmann <[email protected]>
Signed-off-by: Palmer Dabbelt <[email protected]>
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Nowadays PC-style parallel ports come in the form of PCI and PCIe option
cards and there are some combined parallel/serial option cards as well
that we handle in the parport subsystem. There is nothing in particular
that would prevent them from being used in any system equipped with PCI
or PCIe connectivity, except that we do not permit the PARPORT_PC config
option to be selected for platforms for which ARCH_MIGHT_HAVE_PC_PARPORT
has not been set for.
The only PCI platforms that actually can't make use of PC-style parallel
port hardware are those newer PCIe systems that have no support for I/O
cycles in the host bridge, required by such parallel ports. Notably,
this includes the s390 arch, which has port I/O accessors that cause
compilation warnings (promoted to errors with `-Werror'), and there are
other cases such as the POWER9 PHB4 device, though this one has variable
port I/O accessors that depend on the particular system. Also it is not
clear whether the serial port side of devices enabled by PARPORT_SERIAL
uses port I/O or MMIO. Finally Super I/O solutions are always either
ISA or platform devices.
Make the PARPORT_PC option selectable also for PCI systems then, except
for the s390 arch, however limit the availability of PARPORT_PC_SUPERIO
to platforms that enable ARCH_MIGHT_HAVE_PC_PARPORT. Update platforms
accordingly for the required <asm/parport.h> header.
Acked-by: Sudip Mukherjee <[email protected]>
Signed-off-by: Maciej W. Rozycki <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Using asm-generic/uaccess.h to prevent duplicated code:
- Add user_addr_max which mentioned in generic uaccess.h
- Remove custom definitions of KERNEL/USER_DS, get/set_fs,
uaccess_kerenl
- Using generic extable.h instead of custom definitions in
uaccess.h
Change v2:
- Fixup tinyconfig compile error, "__put_user_bad"
- Add __get_user_asm_64
Signed-off-by: Guo Ren <[email protected]>
Link: https://lore.kernel.org/linux-csky/CAK8P3a1DvsXSEDoovLk11hzNHyJi7vqNoToU+n5aFi2viZO_Uw@mail.gmail.com/T/#mbcd58a0e3450e5598974116b607589afa16a3ab7
Cc: Arnd Bergmann <[email protected]>
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Make <asm-generic/local64.h> mandatory in include/asm-generic/Kbuild and
remove all arch/*/include/asm/local64.h arch-specific files since they
only #include <asm-generic/local64.h>.
This fixes build errors on arch/c6x/ and arch/nios2/ for
block/blk-iocost.c.
Build-tested on 21 of 25 arch-es. (tools problems on the others)
Yes, we could even rename <asm-generic/local64.h> to
<linux/local64.h> and change all #includes to use
<linux/local64.h> instead.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Randy Dunlap <[email protected]>
Suggested-by: Christoph Hellwig <[email protected]>
Reviewed-by: Masahiro Yamada <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: Ley Foon Tan <[email protected]>
Cc: Mark Salter <[email protected]>
Cc: Aurelien Jacquiot <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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To enable seccomp constant action bitmaps, we need to have a static
mapping to the audit architecture and system call table size. Add these
for csky.
Signed-off-by: YiFei Zhu <[email protected]>
Signed-off-by: Kees Cook <[email protected]>
Link: https://lore.kernel.org/r/f9219026d4803b22f3e57e3768b4e42e004ef236.1605101222.git.yifeifz2@illinois.edu
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secure_computing() is called first in syscall_trace_enter() so that
a system call will be aborted quickly without doing succeeding syscall
tracing if seccomp rules want to deny that system call.
TODO:
- Update https://github.com/seccomp/libseccomp csky support
Signed-off-by: Guo Ren <[email protected]>
Cc: Arnd Bergmann <[email protected]>
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Change a header to mandatory-y if both of the following are met:
[1] At least one architecture (except um) specifies it as generic-y in
arch/*/include/asm/Kbuild
[2] Every architecture (except um) either has its own implementation
(arch/*/include/asm/*.h) or specifies it as generic-y in
arch/*/include/asm/Kbuild
This commit was generated by the following shell script.
----------------------------------->8-----------------------------------
arches=$(cd arch; ls -1 | sed -e '/Kconfig/d' -e '/um/d')
tmpfile=$(mktemp)
grep "^mandatory-y +=" include/asm-generic/Kbuild > $tmpfile
find arch -path 'arch/*/include/asm/Kbuild' |
xargs sed -n 's/^generic-y += \(.*\)/\1/p' | sort -u |
while read header
do
mandatory=yes
for arch in $arches
do
if ! grep -q "generic-y += $header" arch/$arch/include/asm/Kbuild &&
! [ -f arch/$arch/include/asm/$header ]; then
mandatory=no
break
fi
done
if [ "$mandatory" = yes ]; then
echo "mandatory-y += $header" >> $tmpfile
for arch in $arches
do
sed -i "/generic-y += $header/d" arch/$arch/include/asm/Kbuild
done
fi
done
sed -i '/^mandatory-y +=/d' include/asm-generic/Kbuild
LANG=C sort $tmpfile >> include/asm-generic/Kbuild
----------------------------------->8-----------------------------------
One obvious benefit is the diff stat:
25 files changed, 52 insertions(+), 557 deletions(-)
It is tedious to list generic-y for each arch that needs it.
So, mandatory-y works like a fallback default (by just wrapping
asm-generic one) when arch does not have a specific header
implementation.
See the following commits:
def3f7cefe4e81c296090e1722a76551142c227c
a1b39bae16a62ce4aae02d958224f19316d98b24
It is tedious to convert headers one by one, so I processed by a shell
script.
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Cc: Michal Simek <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>
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Add the pci related code for csky arch to support basic pci virtual
function, such as qemu virt-pci-9pfs.
Signed-off-by: MaJun <[email protected]>
Signed-off-by: Guo Ren <[email protected]>
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dma-continuguous.h is generic for all architectures except arm32 which has
its own version.
Similar change was done for msi.h by commit a1b39bae16a6
("asm-generic: Make msi.h a mandatory include/asm header")
Suggested-by: Christoph Hellwig <[email protected]>
Link: https://lore.kernel.org/linux-arm-kernel/[email protected]/T/#m92bb56b04161057635d4142e1b3b9b6b0a70122e
Signed-off-by: Michal Simek <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Acked-by: Paul Walmsley <[email protected]> # for arch/riscv
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Add SPDX license identifiers to all Make/Kconfig files which:
- Have no license information of any form
These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:
GPL-2.0
Reported-by: Masahiro Yamada <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Reviewed-by: Kate Stewart <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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These generic-y defines do not have the corresponding generic header
in include/asm-generic/, so they are definitely invalid.
Signed-off-by: Masahiro Yamada <[email protected]>
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Pull arch/csky updates from Guo Ren:
- Fixup vdsp&fpu issues in kernel
- Add dynamic function tracer
- Use in_syscall & forget_syscall instead of r11_sig
- Reconstruct signal processing
- Support dynamic start physical address
- Fixup wrong update_mmu_cache implementation
- Support vmlinux bootup with MMU off
- Use va_pa_offset instead of phys_offset
- Fixup syscall_trace return processing flow
- Add perf callchain support
- Add perf_arch_fetch_caller_regs support
- Add page fault perf event support
- Add support for perf registers sampling
* tag 'csky-for-linus-5.2-rc1' of git://github.com/c-sky/csky-linux:
csky/syscall_trace: Fixup return processing flow
csky: Fixup compile warning
csky: Add support for perf registers sampling
csky: add page fault perf event support
csky: Use va_pa_offset instead of phys_offset
csky: Support vmlinux bootup with MMU off
csky: Add perf_arch_fetch_caller_regs support
csky: Fixup wrong update_mmu_cache implementation
csky: Support dynamic start physical address
csky: Reconstruct signal processing
csky: Use in_syscall & forget_syscall instead of r11_sig
csky: Add non-uapi asm/ptrace.h namespace
csky: mm/fault.c: Remove duplicate header
csky: remove redundant generic-y
csky: Update syscall_trace_enter/exit implementation
csky: Add perf callchain support
csky/ftrace: Add dynamic function tracer (include graph tracer)
csky: Fixup vdsp&fpu issues in kernel
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Since commit 7cbbbb8bc297 ("kbuild: warn redundant generic-y"),
redundant generic-y is reported. I missed to delete this one.
scripts/Makefile.asm-generic:25: redundant generic-y found in arch/csky/include/asm/Kbuild: ftrace.h
In this case, csky-specific implementation exists in
arch/csky/include/asm/ftrace.h
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Guo Ren <[email protected]>
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Hook up asm-generic/mmiowb.h to Kbuild for all architectures so that we
can subsequently include asm/mmiowb.h from core code.
Cc: Masahiro Yamada <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Acked-by: Linus Torvalds <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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This patch adds Makefile, Kconfig for build infrastructure.
Signed-off-by: Guo Ren <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
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