Buildresult: linus/se7750_defconfig/sh4-gcc10 built on Nov 27 2020, 06:45

kisskb

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Status:	OK
Date/Time:	Nov 27 2020, 06:45
Duration:	0:01:02.239541
Builder:	blade4b
Revision:	mm: memcg: relayout structure mem_cgroup to avoid cache interference (`4df910620bebb5cfe234af16ac8f6474b60215fd)`
Target:	linus/se7750_defconfig/sh4-gcc10
Branch:	linus
Compiler:	sh4-gcc10 (sh4-linux-gcc (GCC) 10.1.0 / GNU ld (GNU Binutils) 2.34)
Config:	se7750_defconfig (download)
Log:	Download original Possible warnings (13) <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] Full Log # git rev-parse -q --verify 4df910620bebb5cfe234af16ac8f6474b60215fd^{commit} 4df910620bebb5cfe234af16ac8f6474b60215fd already have revision, skipping fetch # git checkout -q -f -B kisskb 4df910620bebb5cfe234af16ac8f6474b60215fd # git clean -qxdf # < git log -1 # commit 4df910620bebb5cfe234af16ac8f6474b60215fd # Author: Feng Tang <feng.tang@intel.com> # Date: Wed Nov 25 13:22:21 2020 +0800 # # mm: memcg: relayout structure mem_cgroup to avoid cache interference # # 0day reported one -22.7% regression for will-it-scale page_fault2 # case [1] on a 4 sockets 144 CPU platform, and bisected to it to be # caused by Waiman's optimization (commit bd0b230fe1) of saving one # 'struct page_counter' space for 'struct mem_cgroup'. # # Initially we thought it was due to the cache alignment change introduced # by the patch, but further debug shows that it is due to some hot data # members ('vmstats_local', 'vmstats_percpu', 'vmstats') sit in 2 adjacent # cacheline (2N and 2N+1 cacheline), and when adjacent cache line prefetch # is enabled, it triggers an "extended level" of cache false sharing for # 2 adjacent cache lines. # # So exchange the 2 member blocks, while keeping mostly the original # cache alignment, which can restore and even enhance the performance, # and save 64 bytes of space for 'struct mem_cgroup' (from 2880 to 2816, # with 0day's default RHEL-8.3 kernel config) # # [1]. https://lore.kernel.org/lkml/20201102091543.GM31092@shao2-debian/ # # Fixes: bd0b230fe145 ("mm/memcg: unify swap and memsw page counters") # Reported-by: kernel test robot <rong.a.chen@intel.com> # Signed-off-by: Feng Tang <feng.tang@intel.com> # Acked-by: Waiman Long <longman@redhat.com> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/korg/gcc-10.1.0-nolibc/sh4-linux/bin/sh4-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-10.1.0-nolibc/sh4-linux/bin/sh4-linux-ld --version # < git log --format=%s --max-count=1 4df910620bebb5cfe234af16ac8f6474b60215fd # < make -s -j 24 ARCH=sh O=/kisskb/build/linus_se7750_defconfig_sh4-gcc10 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-10.1.0-nolibc/sh4-linux/bin/sh4-linux- se7750_defconfig # < make -s -j 24 ARCH=sh O=/kisskb/build/linus_se7750_defconfig_sh4-gcc10 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-10.1.0-nolibc/sh4-linux/bin/sh4-linux- help # make -s -j 24 ARCH=sh O=/kisskb/build/linus_se7750_defconfig_sh4-gcc10 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-10.1.0-nolibc/sh4-linux/bin/sh4-linux- olddefconfig # make -s -j 24 ARCH=sh O=/kisskb/build/linus_se7750_defconfig_sh4-gcc10 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-10.1.0-nolibc/sh4-linux/bin/sh4-linux- Generating include/generated/machtypes.h <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] In file included from /kisskb/src/arch/sh/kernel/cpu/sh4/setup-sh7750.c:13: /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 \| #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(a) \| ^ /kisskb/src/include/linux/sh_intc.h:105:24: note: in expansion of macro '_INTC_ARRAY' 105 \| _INTC_ARRAY(vectors), _INTC_ARRAY(groups), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:8: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4/setup-sh7750.c:215:8: note: in expansion of macro 'DECLARE_INTC_DESC' 215 \| static DECLARE_INTC_DESC(intc_desc, "sh7750", vectors, NULL, \| ^~~~~~~~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 \| #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(a) \| ^ /kisskb/src/include/linux/sh_intc.h:106:2: note: in expansion of macro '_INTC_ARRAY' 106 \| _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:8: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4/setup-sh7750.c:215:8: note: in expansion of macro 'DECLARE_INTC_DESC' 215 \| static DECLARE_INTC_DESC(intc_desc, "sh7750", vectors, NULL, \| ^~~~~~~~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 \| #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(a) \| ^ /kisskb/src/include/linux/sh_intc.h:107:2: note: in expansion of macro '_INTC_ARRAY' 107 \| _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:8: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4/setup-sh7750.c:215:8: note: in expansion of macro 'DECLARE_INTC_DESC' 215 \| static DECLARE_INTC_DESC(intc_desc, "sh7750", vectors, NULL, \| ^~~~~~~~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 \| #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(a) \| ^ /kisskb/src/include/linux/sh_intc.h:107:27: note: in expansion of macro '_INTC_ARRAY' 107 \| _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:8: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4/setup-sh7750.c:215:8: note: in expansion of macro 'DECLARE_INTC_DESC' 215 \| static DECLARE_INTC_DESC(intc_desc, "sh7750", vectors, NULL, \| ^~~~~~~~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 \| #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(a) \| ^ /kisskb/src/include/linux/sh_intc.h:105:24: note: in expansion of macro '_INTC_ARRAY' 105 \| _INTC_ARRAY(vectors), _INTC_ARRAY(groups), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:8: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4/setup-sh7750.c:229:8: note: in expansion of macro 'DECLARE_INTC_DESC' 229 \| static DECLARE_INTC_DESC(intc_desc_dma4, "sh7750_dma4", \| ^~~~~~~~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 \| #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(a) \| ^ /kisskb/src/include/linux/sh_intc.h:106:2: note: in expansion of macro '_INTC_ARRAY' 106 \| _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:8: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4/setup-sh7750.c:229:8: note: in expansion of macro 'DECLARE_INTC_DESC' 229 \| static DECLARE_INTC_DESC(intc_desc_dma4, "sh7750_dma4", \| ^~~~~~~~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 \| #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(a) \| ^ /kisskb/src/include/linux/sh_intc.h:107:2: note: in expansion of macro '_INTC_ARRAY' 107 \| _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:8: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4/setup-sh7750.c:229:8: note: in expansion of macro 'DECLARE_INTC_DESC' 229 \| static DECLARE_INTC_DESC(intc_desc_dma4, "sh7750_dma4", \| ^~~~~~~~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 \| #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(a) \| ^ /kisskb/src/include/linux/sh_intc.h:107:27: note: in expansion of macro '_INTC_ARRAY' 107 \| _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:8: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4/setup-sh7750.c:229:8: note: in expansion of macro 'DECLARE_INTC_DESC' 229 \| static DECLARE_INTC_DESC(intc_desc_dma4, "sh7750_dma4", \| ^~~~~~~~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 \| #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(a) \| ^ /kisskb/src/include/linux/sh_intc.h:105:24: note: in expansion of macro '_INTC_ARRAY' 105 \| _INTC_ARRAY(vectors), _INTC_ARRAY(groups), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:8: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4/setup-sh7750.c:277:8: note: in expansion of macro 'DECLARE_INTC_DESC' 277 \| static DECLARE_INTC_DESC(intc_desc_irlm, "sh7750_irlm", vectors_irlm, NULL, \| ^~~~~~~~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 \| #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(a) \| ^ /kisskb/src/include/linux/sh_intc.h:106:2: note: in expansion of macro '_INTC_ARRAY' 106 \| _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:8: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4/setup-sh7750.c:277:8: note: in expansion of macro 'DECLARE_INTC_DESC' 277 \| static DECLARE_INTC_DESC(intc_desc_irlm, "sh7750_irlm", vectors_irlm, NULL, \| ^~~~~~~~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 \| #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(a) \| ^ /kisskb/src/include/linux/sh_intc.h:107:2: note: in expansion of macro '_INTC_ARRAY' 107 \| _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:8: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4/setup-sh7750.c:277:8: note: in expansion of macro 'DECLARE_INTC_DESC' 277 \| static DECLARE_INTC_DESC(intc_desc_irlm, "sh7750_irlm", vectors_irlm, NULL, \| ^~~~~~~~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void ) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 \| #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(a) \| ^ /kisskb/src/include/linux/sh_intc.h:107:27: note: in expansion of macro '_INTC_ARRAY' 107 \| _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:8: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4/setup-sh7750.c:277:8: note: in expansion of macro 'DECLARE_INTC_DESC' 277 \| static DECLARE_INTC_DESC(intc_desc_irlm, "sh7750_irlm", vectors_irlm, NULL, \| ^~~~~~~~~~~~~~~~~ Kernel: arch/sh/boot/zImage is ready Completed OK # rm -rf /kisskb/build/linus_se7750_defconfig_sh4-gcc10 # Build took: 0:01:02.239541

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