Buildresult: linus/sh-defconfig/sh4-gcc11 built on Feb 28 2023, 15:33

kisskb

Revisions | Branches | Compilers | Configs | Build Results | Build Failures |

Status:	OK
Date/Time:	Feb 28 2023, 15:33
Duration:	0:01:04.849554
Builder:	alpine2
Revision:	vfs: avoid duplicating creds in faccessat if possible (`981ee95cc1f5905ae4936b0dd501085909cdc14f)`
Target:	linus/sh-defconfig/sh4-gcc11
Branch:	linus
Compiler:	sh4-gcc11 (sh4-linux-gcc (GCC) 11.3.0 / GNU ld (GNU Binutils) 2.38)
Config:	defconfig (download)
Log:	Download original Possible warnings (9) <stdin>:1517:2: 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] fs/ext4/readpage.c:404:1: warning: the frame size of 1132 bytes is larger than 1024 bytes [-Wframe-larger-than=] fs/mpage.c:631:1: warning: the frame size of 1144 bytes is larger than 1024 bytes [-Wframe-larger-than=] fs/mpage.c:303:1: warning: the frame size of 1092 bytes is larger than 1024 bytes [-Wframe-larger-than=] Full Log # git rev-parse -q --verify 981ee95cc1f5905ae4936b0dd501085909cdc14f^{commit} 981ee95cc1f5905ae4936b0dd501085909cdc14f already have revision, skipping fetch # git checkout -q -f -B kisskb 981ee95cc1f5905ae4936b0dd501085909cdc14f # git clean -qxdf # < git log -1 # commit 981ee95cc1f5905ae4936b0dd501085909cdc14f # Author: Mateusz Guzik <mjguzik@gmail.com> # Date: Wed Jan 25 16:55:57 2023 +0100 # # vfs: avoid duplicating creds in faccessat if possible # # access(2) remains commonly used, for example on exec: # access("/etc/ld.so.preload", R_OK) # # or when running gcc: strace -c gcc empty.c # # % time seconds usecs/call calls errors syscall # ------ ----------- ----------- --------- --------- ---------------- # 0.00 0.000000 0 42 26 access # # It falls down to do_faccessat without the AT_EACCESS flag, which in turn # results in allocation of new creds in order to modify fsuid/fsgid and # caps. This is a very expensive process single-threaded and most notably # multi-threaded, with numerous structures getting refed and unrefed on # imminent new cred destruction. # # Turns out for typical consumers the resulting creds would be identical # and this can be checked upfront, avoiding the hard work. # # An access benchmark plugged into will-it-scale running on Cascade Lake # shows: # # test proc before after # access1 1 1310582 2908735 (+121%) # distinct files # access1 24 4716491 63822173 (+1353%) # distinct files # access2 24 2378041 5370335 (+125%) # same file # # The above benchmarks are not integrated into will-it-scale, but can be # found in a pull request: # # https://github.com/antonblanchard/will-it-scale/pull/36/files # # Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> # Cc: Al Viro <viro@zeniv.linux.org.uk> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sh4-linux/bin/sh4-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sh4-linux/bin/sh4-linux-ld --version # < git log --format=%s --max-count=1 981ee95cc1f5905ae4936b0dd501085909cdc14f # < make -s -j 160 ARCH=sh O=/kisskb/build/linus_sh-defconfig_sh4-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sh4-linux/bin/sh4-linux- defconfig # < make -s -j 160 ARCH=sh O=/kisskb/build/linus_sh-defconfig_sh4-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sh4-linux/bin/sh4-linux- help # make -s -j 160 ARCH=sh O=/kisskb/build/linus_sh-defconfig_sh4-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sh4-linux/bin/sh4-linux- olddefconfig # make -s -j 160 ARCH=sh O=/kisskb/build/linus_sh-defconfig_sh4-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sh4-linux/bin/sh4-linux- Generating include/generated/machtypes.h <stdin>:1517:2: warning: #warning syscall clone3 not implemented [-Wcpp] In file included from /kisskb/src/arch/sh/include/asm/hw_irq.h:6, from /kisskb/src/include/linux/irq.h:596, from /kisskb/src/include/asm-generic/hardirq.h:17, from /kisskb/src/arch/sh/include/asm/hardirq.h:9, from /kisskb/src/include/linux/hardirq.h:11, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/include/linux/serial_core.h:13, from /kisskb/src/include/linux/serial_sci.h:6, from /kisskb/src/arch/sh/kernel/cpu/sh4a/setup-shx3.c:10: /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:107:9: note: in expansion of macro '_INTC_ARRAY' 107 \| _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:15: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4a/setup-shx3.c:309:8: note: in expansion of macro 'DECLARE_INTC_DESC' 309 \| static DECLARE_INTC_DESC(intc_desc, "shx3", vectors, groups, \| ^~~~~~~~~~~~~~~~~ /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:107:34: note: in expansion of macro '_INTC_ARRAY' 107 \| _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:15: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4a/setup-shx3.c:309:8: note: in expansion of macro 'DECLARE_INTC_DESC' 309 \| static DECLARE_INTC_DESC(intc_desc, "shx3", vectors, groups, \| ^~~~~~~~~~~~~~~~~ /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:107:34: note: in expansion of macro '_INTC_ARRAY' 107 \| _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:15: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4a/setup-shx3.c:322:8: note: in expansion of macro 'DECLARE_INTC_DESC' 322 \| static DECLARE_INTC_DESC(intc_desc_irq, "shx3-irq", vectors_irq, groups, \| ^~~~~~~~~~~~~~~~~ /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:107:9: note: in expansion of macro '_INTC_ARRAY' 107 \| _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:15: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4a/setup-shx3.c:337:8: note: in expansion of macro 'DECLARE_INTC_DESC' 337 \| static DECLARE_INTC_DESC(intc_desc_irl, "shx3-irl", vectors_irl, groups, \| ^~~~~~~~~~~~~~~~~ /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:107:34: note: in expansion of macro '_INTC_ARRAY' 107 \| _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \ \| ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:15: note: in expansion of macro 'INTC_HW_DESC' 124 \| .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ \| ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh4a/setup-shx3.c:337:8: note: in expansion of macro 'DECLARE_INTC_DESC' 337 \| static DECLARE_INTC_DESC(intc_desc_irl, "shx3-irl", vectors_irl, groups, \| ^~~~~~~~~~~~~~~~~ /kisskb/src/fs/ext4/readpage.c: In function 'ext4_mpage_readpages': /kisskb/src/fs/ext4/readpage.c:404:1: warning: the frame size of 1132 bytes is larger than 1024 bytes [-Wframe-larger-than=] 404 \| } \| ^ /kisskb/src/fs/mpage.c: In function '__mpage_writepage': /kisskb/src/fs/mpage.c:631:1: warning: the frame size of 1144 bytes is larger than 1024 bytes [-Wframe-larger-than=] 631 \| } \| ^ /kisskb/src/fs/mpage.c: In function 'do_mpage_readpage': /kisskb/src/fs/mpage.c:303:1: warning: the frame size of 1092 bytes is larger than 1024 bytes [-Wframe-larger-than=] 303 \| } \| ^ Kernel: arch/sh/boot/zImage is ready Completed OK # rm -rf /kisskb/build/linus_sh-defconfig_sh4-gcc11 # Build took: 0:01:04.849554

© Michael Ellerman 2006-2018.