clocksource: arm_arch_timer: Set arch_mem_timer cpumask to cpu_possible_mask
Currently, arch_mem_timer cpumask is set to cpu_all_mask which should be fine. However, cpu_possible_mask is more accurate and if there are other clockevent source in the system which are set to cpu_possible_mask, then having cpu_all_mask may result in issue. E.g. on a platform with arm,sp804 timer with rating 300 and cpu_possible_mask and this arch_mem_timer timer with rating 400 and cpu_all_mask, tick_check_preferred may choose both preferred as the cpumasks are not equal though they must be. This issue was root caused incorrectly initially and a fix was merged as commit 1332a905 ("tick: Prefer a lower rating device only if it's CPU local device"). Signed-off-by:Sudeep Holla <sudeep.holla@arm.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Tested-by:
Kevin Hilman <khilman@baylibre.com> Tested-by:
Martin Blumenstingl <martin.blumenstingl@googlemail.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Link: https://lkml.kernel.org/r/1531151136-18297-2-git-send-email-sudeep.holla@arm.com
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