• Frederic Weisbecker's avatar
    cputime: Make finegrained irqtime accounting generally available · fdf9c356
    Frederic Weisbecker authored
    There is no known reason for this option to be unavailable on other
    archs than x86. They just need to call enable_sched_clock_irqtime()
    if they have a sufficiently finegrained clock to make it working.
    
    Move it to the general option and let the user choose between
    it and pure tick based or virtual cputime accounting.
    
    Note that virtual cputime accounting already performs a finegrained
    irqtime accounting. CONFIG_IRQ_TIME_ACCOUNTING is a kind of middle ground
    between tick and virtual based accounting. So CONFIG_IRQ_TIME_ACCOUNTING
    and CONFIG_VIRT_CPU_ACCOUNTING are mutually exclusive choices.
    Signed-off-by: default avatarFrederic 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>
    fdf9c356
Kconfig 70.4 KB