In light of Mark Rutland's recent work on divorcing the ARM architected timers from the ARM local timer API and introducing a generic arch hook for broadcast it seems that we should remove the local timer API entirely. Doing so will reduce the architecture dependencies of our timer drivers, reduce code in ARM core, and simplify timer drivers because they no longer go through an architecture layer that is essentially a hotplug notifier. Previous attempts have been made[1] unsuccessfully. I'm hoping this can be accepted now so that we can clean up the timer drivers that are used in both UP and SMP situations. Right now these drivers have to ignore the timer setup callback on the boot CPU to avoid registering clockevents twice. This is not very symmetric and causes convuluted code that does the same thing in two places. Patches based on v3.10-rc1 I'm still looking for Acks/Tested-by on PRIMA2. [1] http://article.gmane.org/gmane.linux.ports.arm.kernel/145705 Note: A hotplug notifier is used by both x86 for the apb_timer (see apbt_cpuhp_notify) and by metag (see arch_timer_cpu_notify in metag_generic.c) so this is not new. Changes since v6: * Picked up acks and resent Changes since v5: * Rebased onto v3.10-rc1 * Rebase caused minor updates to mct patch Changes since v4: * Rebased onto next-20130418 * Rebase caused minor updates to mct patch and twd Kconfig Changes since v3: * New patch to fix SMP with dummy timers registered after a global timer * Push this_cpu_ptr lower to avoid preemptible false positive warnings * Collected acks/tested-bys Changes since v2: * Bug fixes in smp_twd from Tony Lindgren's testing * Move smp_twd to use late_time_init hook * Collected Acks Changes since v1: * Picked up Mark's generic dummy timer driver * Split out omap changes into new patch Mark Rutland (1): clocksource: add generic dummy timer driver Stephen Boyd (10): clockevents: Prefer CPU local devices over global devices ARM: smp: Remove duplicate dummy timer implementation ARM: smp_twd: Divorce smp_twd from local timer API ARM: OMAP2+: Divorce from local timer API ARM: EXYNOS4: Divorce mct from local timer API ARM: PRIMA2: Divorce timer-marco from local timer API ARM: msm: Divorce msm_timer from local timer API clocksource: time-armada-370-xp: Fix sparse warning clocksource: time-armada-370-xp: Divorce from local timer API ARM: smp: Remove local timer API arch/arm/Kconfig | 12 +-- arch/arm/include/asm/localtimer.h | 34 --------- arch/arm/kernel/smp.c | 87 --------------------- arch/arm/kernel/smp_twd.c | 64 ++++++++++------ arch/arm/mach-highbank/Kconfig | 2 +- arch/arm/mach-imx/Kconfig | 2 +- arch/arm/mach-msm/timer.c | 126 +++++++++++++++++-------------- arch/arm/mach-omap2/Kconfig | 3 +- arch/arm/mach-omap2/timer.c | 7 -- arch/arm/mach-realview/Kconfig | 8 +- arch/arm/mach-spear/Kconfig | 2 +- arch/arm/mach-tegra/Kconfig | 2 +- arch/arm/mach-ux500/Kconfig | 2 +- arch/arm/mach-vexpress/Kconfig | 2 +- arch/arm/mach-zynq/Kconfig | 2 +- drivers/clocksource/Makefile | 1 + drivers/clocksource/dummy_timer.c | 69 +++++++++++++++++ drivers/clocksource/exynos_mct.c | 60 ++++++++++----- drivers/clocksource/time-armada-370-xp.c | 92 +++++++++++----------- drivers/clocksource/timer-marco.c | 100 +++++++++++++----------- include/linux/time-armada-370-xp.h | 4 +- kernel/time/tick-common.c | 5 +- 22 files changed, 340 insertions(+), 346 deletions(-) delete mode 100644 arch/arm/include/asm/localtimer.h create mode 100644 drivers/clocksource/dummy_timer.c -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
