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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2012-06-16 13:39:34 (GMT) |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2012-08-17 14:31:08 (GMT) |
| commit | b952741c80790d2dc9f17fac6f15d87d58dea2a1 (patch) | |
| tree | d6d1e9bae89ad117052228de7c0d3a741b9b415b /init | |
| parent | c7660994ed6b44d17dad0aac0d156da1e0a2f003 (diff) | |
| download | linux-b952741c80790d2dc9f17fac6f15d87d58dea2a1.tar.xz | |
cputime: Generalize CONFIG_VIRT_CPU_ACCOUNTING
S390, ia64 and powerpc all define their own version
of CONFIG_VIRT_CPU_ACCOUNTING. Generalize the config
and its description to a single place to avoid
duplication.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index af6c7f8..c40d0fb 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -267,6 +267,19 @@ config POSIX_MQUEUE_SYSCTL depends on SYSCTL default y +config VIRT_CPU_ACCOUNTING + bool "Deterministic task and CPU time accounting" + depends on HAVE_VIRT_CPU_ACCOUNTING + default y if PPC64 + help + Select this option to enable more accurate task and CPU time + accounting. This is done by reading a CPU counter on each + kernel entry and exit and on transitions within the kernel + between system, softirq and hardirq state, so there is a + small performance impact. In the case of s390 or IBM POWER > 5, + this also enables accounting of stolen time on logically-partitioned + systems. + config BSD_PROCESS_ACCT bool "BSD Process Accounting" help |