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    SubjectRe: [lkp] [PATCH v3 2/6] atomics: Add test for atomic operations with _relaxed variants
    Hi Fengguang,

    On Mon, Oct 12, 2015 at 11:29:14PM +0800, Fengguang Wu wrote:
    > Hi Boqun,
    >
    > The base tree detection is based on the whole patchset's
    >
    > - subjects
    > - touched files
    > - TO/CC list
    >
    > Log shows the files and TO/CC are strongly related to powerpc,
    > so it looks a natural choice to apply to it. Especially you put
    > "linuxppc-dev@lists.ozlabs.org" in the TO list while Peter/Ingo
    > in the CC list -- that looks like a strong indication for powerpc.
    >

    Thank you for your explanation, so how about modifying the title to:

    [PATCH v3 tip/locking/core 2/6] ...

    also works?

    BTW, does this bot have more tests than 0day? I have pushed this
    patchset to my own repo and had it tested by 0day.

    Regards,
    Boqun

    > [2015-10-12 22:27:49] patched_files: ["arch/powerpc/include/asm/cmpxchg.h", "lib/atomic64_test.c", "include/linux/atomic.h", "arch/powerpc/include/asm/atomic.h"]
    > [2015-10-12 22:27:49] bases: ["powerpc/next", "powerpc/next"]
    >
    > [2015-10-12 22:27:49] lists: ["linux-kernel@vger.kernel.org", "linuxppc-dev@lists.ozlabs.org", "Peter Zijlstra <peterz@infradead.org>", "Ingo Molnar <mingo@kernel.org>"
    > , "Benjamin Herrenschmidt <benh@kernel.crashing.org>", "Paul Mackerras <paulus@samba.org>", "Michael Ellerman <mpe@ellerman.id.au>", "Thomas Gleixner <tglx@linutronix.d
    > e>", "Will Deacon <will.deacon@arm.com>", "\"Paul E. McKenney\" <paulmck@linux.vnet.ibm.com>", "Waiman Long <waiman.long@hp.com>", "Davidlohr Bueso <dave@stgolabs.net>"
    > , "Boqun Feng <boqun.feng@gmail.com>"]
    > [2015-10-12 22:27:49] bases: ["powerpc/next", "powerpc/next", "powerpc/next", "mpe/next", "mpe/next", "arm64/for-next/core", "arm64/for-next/core"]
    >
    > The possible improvement would be to let tip:locking/core register
    > itself in the MAINTAINERS file to match files *cmpxchg* *atomic*.
    >
    > Thanks,
    > Fengguang
    >
    > On Mon, Oct 12, 2015 at 10:56:52PM +0800, Boqun Feng wrote:
    > > On Mon, Oct 12, 2015 at 10:43:56PM +0800, kbuild test robot wrote:
    > > > Hi Boqun,
    > > >
    > > > [auto build test ERROR on v4.3-rc5 -- if it's inappropriate base, please suggest rules for selecting the more suitable base]
    > > >
    > >
    > > This patch should be tested based on current locking/core branch of tip
    > > tree. Thank you.
    > >
    > > Regards,
    > > Boqun
    > >
    > > > url: https://github.com/0day-ci/linux/commits/Boqun-Feng/atomics-powerpc-Implement-relaxed-acquire-release-variants-of-some-atomics/20151012-222750
    > > > config: x86_64-randconfig-x016-10121751 (attached as .config)
    > > > reproduce:
    > > > # save the attached .config to linux build tree
    > > > make ARCH=x86_64
    > > >
    > > > All error/warnings (new ones prefixed by >>):
    > > >
    > > > In file included from include/linux/init.h:4:0,
    > > > from lib/atomic64_test.c:14:
    > > > lib/atomic64_test.c: In function 'test_atomic':
    > > > >> lib/atomic64_test.c:60:9: error: implicit declaration of function 'atomic_inc_return_acquire' [-Werror=implicit-function-declaration]
    > > > BUG_ON(atomic##bit##_##op(&v, ##args) != ret); \
    > > > ^
    > > > include/linux/compiler.h:166:42: note: in definition of macro 'unlikely'
    > > > # define unlikely(x) __builtin_expect(!!(x), 0)
    > > > ^
    > > > >> lib/atomic64_test.c:60:2: note: in expansion of macro 'BUG_ON'
    > > > BUG_ON(atomic##bit##_##op(&v, ##args) != ret); \
    > > > ^
    > > > >> lib/atomic64_test.c:38:2: note: in expansion of macro 'TEST_ARGS'
    > > > test(bit, op##_acquire, ##args); \
    > > > ^
    > > > >> lib/atomic64_test.c:79:2: note: in expansion of macro 'FAMILY_TEST'
    > > > FAMILY_TEST(TEST_ARGS, bit, inc_return, \
    > > > ^
    > > > >> lib/atomic64_test.c:113:2: note: in expansion of macro 'INC_RETURN_FAMILY_TEST'
    > > > INC_RETURN_FAMILY_TEST(, v0);
    > > > ^
    > > > >> lib/atomic64_test.c:60:9: error: implicit declaration of function 'atomic_inc_return_release' [-Werror=implicit-function-declaration]
    > > > BUG_ON(atomic##bit##_##op(&v, ##args) != ret); \
    > > > ^
    > > > include/linux/compiler.h:166:42: note: in definition of macro 'unlikely'
    > > > # define unlikely(x) __builtin_expect(!!(x), 0)
    > > > ^
    > > > >> lib/atomic64_test.c:60:2: note: in expansion of macro 'BUG_ON'
    > > > BUG_ON(atomic##bit##_##op(&v, ##args) != ret); \
    > > > ^
    > > > lib/atomic64_test.c:39:2: note: in expansion of macro 'TEST_ARGS'
    > > > test(bit, op##_release, ##args); \
    > > > ^
    > > > >> lib/atomic64_test.c:79:2: note: in expansion of macro 'FAMILY_TEST'
    > > > FAMILY_TEST(TEST_ARGS, bit, inc_return, \
    > > > ^
    > > > >> lib/atomic64_test.c:113:2: note: in expansion of macro 'INC_RETURN_FAMILY_TEST'
    > > > INC_RETURN_FAMILY_TEST(, v0);
    > > > ^
    > > > >> lib/atomic64_test.c:60:9: error: implicit declaration of function 'atomic_inc_return_relaxed' [-Werror=implicit-function-declaration]
    > > > BUG_ON(atomic##bit##_##op(&v, ##args) != ret); \
    > > > ^
    > > > include/linux/compiler.h:166:42: note: in definition of macro 'unlikely'
    > > > # define unlikely(x) __builtin_expect(!!(x), 0)
    > > > ^
    > > > >> lib/atomic64_test.c:60:2: note: in expansion of macro 'BUG_ON'
    > > > BUG_ON(atomic##bit##_##op(&v, ##args) != ret); \
    > > > ^
    > > > lib/atomic64_test.c:40:2: note: in expansion of macro 'TEST_ARGS'
    > > > test(bit, op##_relaxed, ##args); \
    > > > ^
    > > > >> lib/atomic64_test.c:79:2: note: in expansion of macro 'FAMILY_TEST'
    > > > FAMILY_TEST(TEST_ARGS, bit, inc_return, \
    > > > ^
    > > > >> lib/atomic64_test.c:113:2: note: in expansion of macro 'INC_RETURN_FAMILY_TEST'
    > > > INC_RETURN_FAMILY_TEST(, v0);
    > > > ^
    > > > >> lib/atomic64_test.c:60:9: error: implicit declaration of function 'atomic_dec_return_acquire' [-Werror=implicit-function-declaration]
    > > > BUG_ON(atomic##bit##_##op(&v, ##args) != ret); \
    > > > ^
    > > > include/linux/compiler.h:166:42: note: in definition of macro 'unlikely'
    > > > # define unlikely(x) __builtin_expect(!!(x), 0)
    > > > ^
    > > > >> lib/atomic64_test.c:60:2: note: in expansion of macro 'BUG_ON'
    > > > BUG_ON(atomic##bit##_##op(&v, ##args) != ret); \
    > > > ^
    > > > >> lib/atomic64_test.c:38:2: note: in expansion of macro 'TEST_ARGS'
    > > > test(bit, op##_acquire, ##args); \
    > > > ^
    > > > lib/atomic64_test.c:85:2: note: in expansion of macro 'FAMILY_TEST'
    > > > FAMILY_TEST(TEST_ARGS, bit, dec_return, \
    > > > ^
    > > > >> lib/atomic64_test.c:114:2: note: in expansion of macro 'DEC_RETURN_FAMILY_TEST'
    > > > DEC_RETURN_FAMILY_TEST(, v0);
    > > > ^
    > > > >> lib/atomic64_test.c:60:9: error: implicit declaration of function 'atomic_dec_return_release' [-Werror=implicit-function-declaration]
    > > > BUG_ON(atomic##bit##_##op(&v, ##args) != ret); \
    > > > ^
    > > > include/linux/compiler.h:166:42: note: in definition of macro 'unlikely'
    > > > # define unlikely(x) __builtin_expect(!!(x), 0)
    > > > ^
    > > > >> lib/atomic64_test.c:60:2: note: in expansion of macro 'BUG_ON'
    > > > BUG_ON(atomic##bit##_##op(&v, ##args) != ret); \
    > > > ^
    > > > lib/atomic64_test.c:39:2: note: in expansion of macro 'TEST_ARGS'
    > > > test(bit, op##_release, ##args); \
    > > > ^
    > > > lib/atomic64_test.c:85:2: note: in expansion of macro 'FAMILY_TEST'
    > > > FAMILY_TEST(TEST_ARGS, bit, dec_return, \
    > > > ^
    > > > >> lib/atomic64_test.c:114:2: note: in expansion of macro 'DEC_RETURN_FAMILY_TEST'
    > > > DEC_RETURN_FAMILY_TEST(, v0);
    > > > ^
    > > >
    > > > vim +/atomic_inc_return_acquire +60 lib/atomic64_test.c
    > > >
    > > > 8 * the Free Software Foundation; either version 2 of the License, or
    > > > 9 * (at your option) any later version.
    > > > 10 */
    > > > 11
    > > > 12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
    > > > 13
    > > > > 14 #include <linux/init.h>
    > > > 15 #include <linux/bug.h>
    > > > 16 #include <linux/kernel.h>
    > > > 17 #include <linux/atomic.h>
    > > > 18
    > > > 19 #define TEST(bit, op, c_op, val) \
    > > > 20 do { \
    > > > 21 atomic##bit##_set(&v, v0); \
    > > > 22 r = v0; \
    > > > 23 atomic##bit##_##op(val, &v); \
    > > > 24 r c_op val; \
    > > > 25 WARN(atomic##bit##_read(&v) != r, "%Lx != %Lx\n", \
    > > > 26 (unsigned long long)atomic##bit##_read(&v), \
    > > > 27 (unsigned long long)r); \
    > > > 28 } while (0)
    > > > 29
    > > > 30 /*
    > > > 31 * Test for a atomic operation family,
    > > > 32 * @test should be a macro accepting parameters (bit, op, ...)
    > > > 33 */
    > > > 34
    > > > 35 #define FAMILY_TEST(test, bit, op, args...) \
    > > > 36 do { \
    > > > 37 test(bit, op, ##args); \
    > > > > 38 test(bit, op##_acquire, ##args); \
    > > > > 39 test(bit, op##_release, ##args); \
    > > > > 40 test(bit, op##_relaxed, ##args); \
    > > > 41 } while (0)
    > > > 42
    > > > 43 #define TEST_RETURN(bit, op, c_op, val) \
    > > > 44 do { \
    > > > 45 atomic##bit##_set(&v, v0); \
    > > > 46 r = v0; \
    > > > 47 r c_op val; \
    > > > 48 BUG_ON(atomic##bit##_##op(val, &v) != r); \
    > > > 49 BUG_ON(atomic##bit##_read(&v) != r); \
    > > > 50 } while (0)
    > > > 51
    > > > 52 #define RETURN_FAMILY_TEST(bit, op, c_op, val) \
    > > > 53 do { \
    > > > 54 FAMILY_TEST(TEST_RETURN, bit, op, c_op, val); \
    > > > 55 } while (0)
    > > > 56
    > > > 57 #define TEST_ARGS(bit, op, init, ret, expect, args...) \
    > > > 58 do { \
    > > > 59 atomic##bit##_set(&v, init); \
    > > > > 60 BUG_ON(atomic##bit##_##op(&v, ##args) != ret); \
    > > > 61 BUG_ON(atomic##bit##_read(&v) != expect); \
    > > > 62 } while (0)
    > > > 63
    > > > 64 #define XCHG_FAMILY_TEST(bit, init, new) \
    > > > 65 do { \
    > > > 66 FAMILY_TEST(TEST_ARGS, bit, xchg, init, init, new, new); \
    > > > 67 } while (0)
    > > > 68
    > > > 69 #define CMPXCHG_FAMILY_TEST(bit, init, new, wrong) \
    > > > 70 do { \
    > > > 71 FAMILY_TEST(TEST_ARGS, bit, cmpxchg, \
    > > > 72 init, init, new, init, new); \
    > > > 73 FAMILY_TEST(TEST_ARGS, bit, cmpxchg, \
    > > > 74 init, init, init, wrong, new); \
    > > > 75 } while (0)
    > > > 76
    > > > 77 #define INC_RETURN_FAMILY_TEST(bit, i) \
    > > > 78 do { \
    > > > > 79 FAMILY_TEST(TEST_ARGS, bit, inc_return, \
    > > > 80 i, (i) + one, (i) + one); \
    > > > 81 } while (0)
    > > > 82
    > > > 83 #define DEC_RETURN_FAMILY_TEST(bit, i) \
    > > > 84 do { \
    > > > > 85 FAMILY_TEST(TEST_ARGS, bit, dec_return, \
    > > > 86 i, (i) - one, (i) - one); \
    > > > 87 } while (0)
    > > > 88
    > > > 89 static __init void test_atomic(void)
    > > > 90 {
    > > > 91 int v0 = 0xaaa31337;
    > > > 92 int v1 = 0xdeadbeef;
    > > > 93 int onestwos = 0x11112222;
    > > > 94 int one = 1;
    > > > 95
    > > > 96 atomic_t v;
    > > > 97 int r;
    > > > 98
    > > > 99 TEST(, add, +=, onestwos);
    > > > 100 TEST(, add, +=, -one);
    > > > 101 TEST(, sub, -=, onestwos);
    > > > 102 TEST(, sub, -=, -one);
    > > > 103 TEST(, or, |=, v1);
    > > > 104 TEST(, and, &=, v1);
    > > > 105 TEST(, xor, ^=, v1);
    > > > 106 TEST(, andnot, &= ~, v1);
    > > > 107
    > > > 108 RETURN_FAMILY_TEST(, add_return, +=, onestwos);
    > > > 109 RETURN_FAMILY_TEST(, add_return, +=, -one);
    > > > 110 RETURN_FAMILY_TEST(, sub_return, -=, onestwos);
    > > > 111 RETURN_FAMILY_TEST(, sub_return, -=, -one);
    > > > 112
    > > > > 113 INC_RETURN_FAMILY_TEST(, v0);
    > > > > 114 DEC_RETURN_FAMILY_TEST(, v0);
    > > > 115
    > > > 116 XCHG_FAMILY_TEST(, v0, v1);
    > > > 117 CMPXCHG_FAMILY_TEST(, v0, v1, onestwos);
    > > >
    > > > ---
    > > > 0-DAY kernel test infrastructure Open Source Technology Center
    > > > https://lists.01.org/pipermail/kbuild-all Intel Corporation
    > >
    > >
    >
    >
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