From: Tony Lindgren Date: Tue, 28 Jun 2005 20:01:16 +0000 (+0100) Subject: [PATCH] ARM: 2760/1: Add a warning on dynamic tick timekeeping on some platforms X-Git-Tag: v2.6.13-rc1~38^2~1 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f2be64b3b15f52ceb83ff26abc10705a31ae5352;p=linux-2.6 [PATCH] ARM: 2760/1: Add a warning on dynamic tick timekeeping on some platforms Patch from Tony Lindgren This patch was suggested by RMK, and adds a warning on the accuracy of timekeeping when using dynamic tick on some platforms. Depending on the timer implementation, dynamic tick may affect the accuracy of timekeeping. Currently at least OMAP is known to have accurate timekeeping with dynamic tick. Signed-off-by: Tony Lindgren Signed-off-by: Russell King --- diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index c8d94dcd8e..620f2ca94e 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -361,6 +361,11 @@ config NO_IDLE_HZ Alternatively, if you want dynamic tick automatically enabled during boot, pass "dyntick=enable" via the kernel command string. + Please note that dynamic tick may affect the accuracy of + timekeeping on some platforms depending on the implementation. + Currently at least OMAP platform is known to have accurate + timekeeping with dynamic tick. + config ARCH_DISCONTIGMEM_ENABLE bool default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)