user/sven/linux.git/include/linux/cputime.h, branch v4.9.46Linux Kernel
https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v4.9.462014-03-13T14:56:44Zcputime: Bring cputime -> nsecs conversion2014-03-13T14:56:44ZFrederic Weisbeckerfweisbec@gmail.com2014-03-05T15:22:37Zurn:sha1:d8a9ce3f8ad2b546b9ebaf65de809da0793f11c5
We already have nsecs_to_cputime(). Now we need to be able to convert
the other way around in order to fix a bug on steal time accounting.
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
cputime: Default implementation of nsecs -> cputime conversion2014-03-13T14:56:43ZFrederic Weisbeckerfweisbec@gmail.com2014-03-05T15:33:42Zurn:sha1:bfc3f0281e08066fa8111c3972cff6edc1049864
The architectures that override cputime_t (s390, ppc) don't provide
any version of nsecs_to_cputime(). Indeed this cputime_t implementation
by backend only happens when CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y under
which the core code doesn't make any use of nsecs_to_cputime().
At least for now.
We are going to make a broader use of it so lets provide a default
version with a per usecs granularity. It should be good enough for most
usecases.
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>