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x86/vdso: Document vgtod_ts better
authorAndy Lutomirski <luto@kernel.org>
Thu, 4 Oct 2018 21:44:45 +0000 (14:44 -0700)
committerIngo Molnar <mingo@kernel.org>
Fri, 5 Oct 2018 08:12:18 +0000 (10:12 +0200)
commitbcc4a62a73cb65327d7268fbfa3a786d603f52dc
treec2e94ba24842651f81782fb22a51df0382d5e2b5tree | snapshot
parent89fe0a1f1c694a3b0b3cfa8c0952d603753f36dfcommit | diff
x86/vdso: Document vgtod_ts better

After reading do_hres() and do_course() and scratching my head a
bit, I figured out why the arithmetic is strange.  Document it.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/f66f53d81150bbad47d7b282c9207a71a3ce1c16.1538689401.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/include/asm/vgtod.h diff | blob | history
Domain: System / Kernel;