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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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736706bee3
Every in-kernel use of this function defined it to KERNEL_DS (either as an actual define, or as an inline function). It's an entirely historical artifact, and long long long ago used to actually read the segment selector valueof '%ds' on x86. Which in the kernel is always KERNEL_DS. Inspired by a patch from Jann Horn that just did this for a very small subset of users (the ones in fs/), along with Al who suggested a script. I then just took it to the logical extreme and removed all the remaining gunk. Roughly scripted with git grep -l '(get_ds())' -- :^tools/ | xargs sed -i 's/(get_ds())/(KERNEL_DS)/' git grep -lw 'get_ds' -- :^tools/ | xargs sed -i '/^#define get_ds()/d' plus manual fixups to remove a few unusual usage patterns, the couple of inline function cases and to fix up a comment that had become stale. The 'get_ds()' function remains in an x86 kvm selftest, since in user space it actually does something relevant. Inspired-by: Jann Horn <jannh@google.com> Inspired-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| .. | ||
| vdso | ||
| asm-offsets.c | ||
| atl2c.c | ||
| cacheinfo.c | ||
| devtree.c | ||
| dma.c | ||
| ex-entry.S | ||
| ex-exit.S | ||
| ex-scall.S | ||
| fpu.c | ||
| ftrace.c | ||
| head.S | ||
| irq.c | ||
| Makefile | ||
| module.c | ||
| nds32_ksyms.c | ||
| perf_event_cpu.c | ||
| pm.c | ||
| process.c | ||
| ptrace.c | ||
| setup.c | ||
| signal.c | ||
| sleep.S | ||
| stacktrace.c | ||
| sys_nds32.c | ||
| syscall_table.c | ||
| time.c | ||
| traps.c | ||
| vdso.c | ||
| vmlinux.lds.S | ||