# git rev-parse -q --verify bb5a93aaf25261321db0c499cde7da6ee9d8b164^{commit}
bb5a93aaf25261321db0c499cde7da6ee9d8b164
already have revision, skipping fetch
# git checkout -q -f -B kisskb bb5a93aaf25261321db0c499cde7da6ee9d8b164
# git clean -qxdf
# < git log -1
# commit bb5a93aaf25261321db0c499cde7da6ee9d8b164
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Jul 5 12:50:20 2020 -0700
# 
#     x86/ldt: use "pr_info_once()" instead of open-coding it badly
#     
#     Using a mutex for "print this warning only once" is so overdesigned as
#     to be actively offensive to my sensitive stomach.
#     
#     Just use "pr_info_once()" that already does this, although in a
#     (harmlessly) racy manner that can in theory cause the message to be
#     printed twice if more than one CPU races on that "is this the first
#     time" test.
#     
#     [ If somebody really cares about that harmless data race (which sounds
#       very unlikely indeed), that person can trivially fix printk_once() by
#       using a simple atomic access, preferably with an optimistic non-atomic
#       test first before even bothering to treat the pointless "make sure it
#       is _really_ just once" case.
#     
#       A mutex is most definitely never the right primitive to use for
#       something like this. ]
#     
#     Yes, this is a small and meaningless detail in a code path that hardly
#     matters.  But let's keep some code quality standards here, and not
#     accept outrageously bad code.
#     
#     Link: https://lore.kernel.org/lkml/CAHk-=wgV9toS7GU3KmNpj8hCS9SeF+A0voHS8F275_mgLhL4Lw@mail.gmail.com/
#     Cc: Andy Lutomirski <luto@kernel.org>
#     Cc: Thomas Gleixner <tglx@linutronix.de>
#     Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/sh4-linux/bin/sh4-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/sh4-linux/bin/sh4-linux-ld --version
# < git log --format=%s --max-count=1 bb5a93aaf25261321db0c499cde7da6ee9d8b164
# < make -s -j 24 ARCH=sh O=/kisskb/build/linus_sh7710voipgw_defconfig_sh4-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/sh4-linux/bin/sh4-linux-  sh7710voipgw_defconfig
# < make -s -j 24 ARCH=sh O=/kisskb/build/linus_sh7710voipgw_defconfig_sh4-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/sh4-linux/bin/sh4-linux-  help
# make -s -j 24 ARCH=sh O=/kisskb/build/linus_sh7710voipgw_defconfig_sh4-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/sh4-linux/bin/sh4-linux-  olddefconfig
# make -s -j 24 ARCH=sh O=/kisskb/build/linus_sh7710voipgw_defconfig_sh4-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/sh4-linux/bin/sh4-linux-  
  Generating include/generated/machtypes.h
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
/kisskb/src/arch/sh/kernel/cpu/sh3/../../entry-common.S: Assembler messages:
/kisskb/src/arch/sh/kernel/cpu/sh3/../../entry-common.S:385: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence
/kisskb/src/arch/sh/kernel/cpu/sh3/../../entry-common.S:388: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence
/kisskb/src/drivers/sh/clk/cpg.c: In function 'r8':
/kisskb/src/drivers/sh/clk/cpg.c:41:17: warning: passing argument 1 of 'ioread8' discards 'const' qualifier from pointer target type
  return ioread8(addr);
                 ^
In file included from /kisskb/src/arch/sh/include/asm/io.h:21:0,
                 from /kisskb/src/include/linux/io.h:13,
                 from /kisskb/src/drivers/sh/clk/cpg.c:14:
/kisskb/src/include/asm-generic/iomap.h:29:21: note: expected 'void *' but argument is of type 'const void *'
 extern unsigned int ioread8(void __iomem *);
                     ^
/kisskb/src/drivers/sh/clk/cpg.c: In function 'r16':
/kisskb/src/drivers/sh/clk/cpg.c:46:18: warning: passing argument 1 of 'ioread16' discards 'const' qualifier from pointer target type
  return ioread16(addr);
                  ^
In file included from /kisskb/src/arch/sh/include/asm/io.h:21:0,
                 from /kisskb/src/include/linux/io.h:13,
                 from /kisskb/src/drivers/sh/clk/cpg.c:14:
/kisskb/src/include/asm-generic/iomap.h:30:21: note: expected 'void *' but argument is of type 'const void *'
 extern unsigned int ioread16(void __iomem *);
                     ^
/kisskb/src/drivers/sh/clk/cpg.c: In function 'r32':
/kisskb/src/drivers/sh/clk/cpg.c:51:18: warning: passing argument 1 of 'ioread32' discards 'const' qualifier from pointer target type
  return ioread32(addr);
                  ^
In file included from /kisskb/src/arch/sh/include/asm/io.h:21:0,
                 from /kisskb/src/include/linux/io.h:13,
                 from /kisskb/src/drivers/sh/clk/cpg.c:14:
/kisskb/src/include/asm-generic/iomap.h:32:21: note: expected 'void *' but argument is of type 'const void *'
 extern unsigned int ioread32(void __iomem *);
                     ^
/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/sh4-linux/bin/sh4-linux-ld: kernel/sched/core.o: uses dsp instructions while previous modules use floating point instructions
/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/sh4-linux/bin/sh4-linux-ld: kernel/sched/core.o: uses instructions which are incompatible with instructions used in previous modules
/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/sh4-linux/bin/sh4-linux-ld: failed to merge target specific data of file kernel/sched/core.o
make[1]: *** [/kisskb/src/Makefile:1139: vmlinux] Error 1
make: *** [Makefile:185: __sub-make] Error 2
Command 'make -s -j 24 ARCH=sh O=/kisskb/build/linus_sh7710voipgw_defconfig_sh4-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/sh4-linux/bin/sh4-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_sh7710voipgw_defconfig_sh4-gcc4.9
# Build took: 0:00:40.162483