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Groups > linux.kernel > #1660008
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 13/17] RISC-V: Add include subdirectory |
| Date | 2017-06-07 18:40 +0200 |
| Message-ID | <tPM9X-CA-15@gated-at.bofh.it> (permalink) |
| References | (1 earlier) <tPvLP-6UA-3@gated-at.bofh.it> <tPvLR-6UA-49@gated-at.bofh.it> <tPHWG-6rv-19@gated-at.bofh.it> <tPIpI-6D4-13@gated-at.bofh.it> <tPIJ4-6JB-21@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, Jun 07, 2017 at 02:58:50PM +0200, Peter Zijlstra wrote:
> On Wed, Jun 07, 2017 at 02:36:27PM +0200, Peter Zijlstra wrote:
> > Which (pending the sub confusion) will generate the entire set of:
> >
> > atomic_add, atomic_add_return{_relaxed,_acquire,_release,} atomic_fetch_add{_relaxed,_acquire,_release,}
> > atomic_sub, atomic_sub_return{_relaxed,_acquire,_release,} atomic_fetch_sub{_relaxed,_acquire,_release,}
> >
> > atomic_and, atomic_fetch_and{_relaxed,_acquire,_release,}
> > atomic_or, atomic_fetch_or{_relaxed,_acquire,_release,}
> > atomic_xor, atomic_fetch_xor{_relaxed,_acquire,_release,}
> >
>
> Another approach would be to override __atomic_op_{acquire,release} and
> use things like:
>
> "FENCE r,rw" -- (load) ACQUIRE
> "FENCE rw,w" -- (store) RELEASE
>
> And then you only need to provide _relaxed atomics.
>
> Also, and I didn't check for that, you need to provide:
>
> smp_load_acquire(), smp_store_release(), atomic_read_acquire(),
> atomic_store_release().
Also, you probably need to provide smp_mb__before_spinlock(), but also
see:
https://lkml.kernel.org/r/20170607161501.819948352@infradead.org
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RISC-V Linux Port v2 Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-07 01:10 +0200
[PATCH 06/17] pci: Add generic pcibios_{fixup_bus,align_resource} Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-07 01:10 +0200
Re: [PATCH 06/17] pci: Add generic pcibios_{fixup_bus,align_resource} Geert Uytterhoeven <geert@linux-m68k.org> - 2017-06-07 09:30 +0200
Re: [PATCH 06/17] pci: Add generic pcibios_{fixup_bus,align_resource} Arnd Bergmann <arnd@arndb.de> - 2017-06-07 10:10 +0200
Re: [PATCH 06/17] pci: Add generic pcibios_{fixup_bus,align_resource} Christoph Hellwig <hch@infradead.org> - 2017-06-08 10:20 +0200
Re: [PATCH 06/17] pci: Add generic pcibios_{fixup_bus,align_resource} Arnd Bergmann <arnd@arndb.de> - 2017-06-08 10:40 +0200
[PATCH 08/17] dts: include documentation for the RISC-V interrupt controllers Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-07 01:10 +0200
Re: [PATCH 08/17] dts: include documentation for the RISC-V interrupt controllers Geert Uytterhoeven <geert@linux-m68k.org> - 2017-06-07 09:20 +0200
Re: [PATCH 08/17] dts: include documentation for the RISC-V interrupt controllers Mark Rutland <mark.rutland@arm.com> - 2017-06-07 12:20 +0200
Re: [PATCH 08/17] dts: include documentation for the RISC-V interrupt controllers Wesley Terpstra <wesley@sifive.com> - 2017-06-07 21:00 +0200
Re: [PATCH 08/17] dts: include documentation for the RISC-V interrupt controllers Rob Herring <robh+dt@kernel.org> - 2017-06-07 22:00 +0200
Re: [PATCH 08/17] dts: include documentation for the RISC-V interrupt controllers Wesley Terpstra <wesley@sifive.com> - 2017-06-07 22:40 +0200
Re: [PATCH 08/17] dts: include documentation for the RISC-V interrupt controllers Mark Rutland <mark.rutland@arm.com> - 2017-06-08 13:00 +0200
Re: [PATCH 08/17] dts: include documentation for the RISC-V interrupt controllers Wesley Terpstra <wesley@sifive.com> - 2017-06-09 23:50 +0200
Re: [PATCH 08/17] dts: include documentation for the RISC-V interrupt controllers Wesley Terpstra <wesley@sifive.com> - 2017-06-10 00:00 +0200
Re: [PATCH 08/17] dts: include documentation for the RISC-V interrupt controllers Mark Rutland <mark.rutland@arm.com> - 2017-06-19 16:40 +0200
Re: [PATCH 08/17] dts: include documentation for the RISC-V interrupt controllers "Luis R. Rodriguez" <mcgrof@kernel.org> - 2017-06-08 00:30 +0200
[PATCH 11/17] irqchip: RISC-V Local Interrupt Controller Driver Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-07 01:10 +0200
Re: [PATCH 11/17] irqchip: RISC-V Local Interrupt Controller Driver Geert Uytterhoeven <geert@linux-m68k.org> - 2017-06-07 09:20 +0200
[PATCH 01/17] drivers: support PCIe in RISCV Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-07 01:10 +0200
Re: [PATCH 01/17] drivers: support PCIe in RISCV Geert Uytterhoeven <geert@linux-m68k.org> - 2017-06-07 09:20 +0200
Re: [PATCH 01/17] drivers: support PCIe in RISCV Christoph Hellwig <hch@infradead.org> - 2017-06-07 16:30 +0200
Re: [PATCH 01/17] drivers: support PCIe in RISCV Olof Johansson <olof@lixom.net> - 2017-06-07 19:50 +0200
[PATCH 15/17] RISC-V: Add mm subdirectory Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-07 01:10 +0200
[PATCH 09/17] clocksource/timer-riscv: New RISC-V Clocksource Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-07 01:10 +0200
Re: [PATCH 09/17] clocksource/timer-riscv: New RISC-V Clocksource Geert Uytterhoeven <geert@linux-m68k.org> - 2017-06-07 09:20 +0200
Re: [PATCH 09/17] clocksource/timer-riscv: New RISC-V Clocksource Arnd Bergmann <arnd@arndb.de> - 2017-06-07 09:30 +0200
Re: [PATCH 09/17] clocksource/timer-riscv: New RISC-V Clocksource Marc Zyngier <marc.zyngier@arm.com> - 2017-06-07 11:50 +0200
Re: RISC-V Linux Port v2 David Howells <dhowells@redhat.com> - 2017-06-07 09:30 +0200
Re: RISC-V Linux Port v2 Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-08 00:00 +0200
Re: [PATCH 13/17] RISC-V: Add include subdirectory Arnd Bergmann <arnd@arndb.de> - 2017-06-07 10:20 +0200
Re: RISC-V Linux Port v2 Will Deacon <will.deacon@arm.com> - 2017-06-07 11:30 +0200
Re: RISC-V Linux Port v2 Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-08 00:00 +0200
Re: RISC-V Linux Port v2 Will Deacon <will.deacon@arm.com> - 2017-06-08 12:30 +0200
Re: RISC-V Linux Port v2 Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-08 20:20 +0200
Re: [PATCH 13/17] RISC-V: Add include subdirectory Peter Zijlstra <peterz@infradead.org> - 2017-06-07 14:00 +0200
Re: [PATCH 13/17] RISC-V: Add include subdirectory Peter Zijlstra <peterz@infradead.org> - 2017-06-07 14:30 +0200
Re: [PATCH 13/17] RISC-V: Add include subdirectory Peter Zijlstra <peterz@infradead.org> - 2017-06-07 14:10 +0200
Re: [PATCH 13/17] RISC-V: Add include subdirectory Peter Zijlstra <peterz@infradead.org> - 2017-06-07 14:30 +0200
Re: [PATCH 13/17] RISC-V: Add include subdirectory Peter Zijlstra <peterz@infradead.org> - 2017-06-07 14:40 +0200
Re: [PATCH 13/17] RISC-V: Add include subdirectory Peter Zijlstra <peterz@infradead.org> - 2017-06-07 15:00 +0200
Re: [PATCH 13/17] RISC-V: Add include subdirectory Will Deacon <will.deacon@arm.com> - 2017-06-07 15:20 +0200
Re: [PATCH 13/17] RISC-V: Add include subdirectory Peter Zijlstra <peterz@infradead.org> - 2017-06-07 18:40 +0200
Re: [PATCH 13/17] RISC-V: Add include subdirectory Peter Zijlstra <peterz@infradead.org> - 2017-06-07 14:50 +0200
Re: [PATCH 13/17] RISC-V: Add include subdirectory Peter Zijlstra <peterz@infradead.org> - 2017-06-07 15:20 +0200
Re: [PATCH 13/17] RISC-V: Add include subdirectory Peter Zijlstra <peterz@infradead.org> - 2017-06-09 10:20 +0200
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