RISC-V: smb_mb() fix for 4.16-rc4
This week we have a single fix: replacing smp_mb() with __smp_mb(). We were the only architecture with smp_mb() and it appears to just be clearly wrong, so I think this is a pretty safe patch for an RC. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEAM520YNJYN/OiG3470yhUCzLq0EFAlqUQEETHHBhbG1lckBk YWJiZWx0LmNvbQAKCRDvTKFQLMurQciND/wJOHzf/O7aHWlt7UYvzKsqgIdxNKiH IWbv4jTmJGJju10Ht5jImuIxSYJ5gu24Vj5f+/XkFRZfTGrOGgByXh37RuFP51kH 3yFqzDoBfmBHu8NTeyAb6hHtozvcVTBYynSqKBJzsCz3mrBgqobvzoii1R2TX4lc +cPNffv+YRPZSHdHOpaytYIYdVxbcFmsGocftjzZ9AbR87mbT1zxDJV+YHgH86vE 2qqaWYTJChCCQo+We57+0HheMtzjvuC9wXRg7yqDOhe5mvpxNQf/RLhr4cxJtcFN i96ERaRg0B5PAU+Pcql0wVL9oigd7bPv4Ncc+rjPG9efkXDKeN/ueD1az9yWRqE1 SUjJROel5tF6Yxytn2XX+MEIPEy0AO1WlD+9o23aoaKXHgSu8kMU3Zgryvs+S6W5 VkZeeUk/VV4YIQy8HwMujgjKzLXOoBjAHOvSyyf75ERkYbQxpEjkWRZWtjsiLGbP lgHX59p3C2J3w/xLA+rUE3gdPm4qY45l232RJFlFS6e+wG32/Fw+Yc+PxFHhPARK J+mhAVswhfrC4x9KbL83y8Zf9RvJ4y4qnpJAOyze+OgARq30SLzr6ul+5nHQAkb+ 4lcPS0ROsxpa83BnGC8bfz9TGoomdYJrT8piV+lx8wTPrZQg4gfAoStSyu89V0Vz LBcwO6MObWcdhw== =ke4H -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-4.16-rc4_smp_mb' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux Pull RISC-V fix from Palmer Dabbelt: "This week we have a single fix: replacing smp_mb() with __smp_mb(). We were the only architecture with smp_mb() and it appears to just be clearly wrong, so I think this is a pretty safe patch for an RC" * tag 'riscv-for-linus-4.16-rc4_smp_mb' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux: riscv/barrier: Define __smp_{mb,rmb,wmb}
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#define wmb() RISCV_FENCE(ow,ow)
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/* These barriers do not need to enforce ordering on devices, just memory. */
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#define smp_mb() RISCV_FENCE(rw,rw)
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#define smp_rmb() RISCV_FENCE(r,r)
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#define smp_wmb() RISCV_FENCE(w,w)
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#define __smp_mb() RISCV_FENCE(rw,rw)
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#define __smp_rmb() RISCV_FENCE(r,r)
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#define __smp_wmb() RISCV_FENCE(w,w)
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/*
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* This is a very specific barrier: it's currently only used in two places in
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