- 15 7月, 2013 1 次提交
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由 Paul Gortmaker 提交于
The __cpuinit type of throwaway sections might have made sense some time ago when RAM was more constrained, but now the savings do not offset the cost and complications. For example, the fix in commit 5e427ec2 ("x86: Fix bit corruption at CPU resume time") is a good example of the nasty type of bugs that can be created with improper use of the various __init prefixes. After a discussion on LKML[1] it was decided that cpuinit should go the way of devinit and be phased out. Once all the users are gone, we can then finally remove the macros themselves from linux/init.h. Note that some harmless section mismatch warnings may result, since notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c) and are flagged as __cpuinit -- so if we remove the __cpuinit from the arch specific callers, we will also get section mismatch warnings. As an intermediate step, we intend to turn the linux/init.h cpuinit related content into no-ops as early as possible, since that will get rid of these warnings. In any case, they are temporary and harmless. This removes all the ARM uses of the __cpuinit macros from C code, and all __CPUINIT from assembly code. It also had two ".previous" section statements that were paired off against __CPUINIT (aka .section ".cpuinit.text") that also get removed here. [1] https://lkml.org/lkml/2013/5/20/589 Cc: Russell King <linux@arm.linux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
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- 12 5月, 2013 1 次提交
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由 Shawn Guo 提交于
The diagnostic register holds the errata bits. Mostly bootloader does not bring up secondary cores, so that when errata bits are set in bootloader, they are set only for boot cpu. But on a SMP configuration, it should be equally done on every single core. Set up the diagnostic register for secondary cores by replicating the register from boot cpu. Signed-off-by: NShawn Guo <shawn.guo@linaro.org> Acked-by: NDirk Behme <dirk.behme@de.bosch.com>
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- 12 4月, 2013 1 次提交
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由 Shawn Guo 提交于
The i.MX6 Quad can be fused as i.MX6 Dual chip, and similarly i.MX6 DualLite can be fused as i.MX6 Solo. The actual number of available cores can be found out from SCU. Since we do not reflect the fusing thing in device tree, the function arm_dt_init_cpu_maps() will always call set_cpu_possible(true) for 4 cores on i.MX6 Quad/Dual and 2 cores for i.MX6 DualLite/Solo. This causes failures when kernel tries to bring those unavailable cores online. For example, the following failure message will be seen when booting an i.MX6 Solo chip. CPU1: failed to come online Though kernel will still boot fine, the message is somehow annoying. Let's get rid of it by calling set_cpu_possible(false) on those unavailable cores. While at it, the set_cpu_possible(true) for available cores is removed, since it's already been done in arm_dt_init_cpu_maps(). Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
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- 27 3月, 2013 1 次提交
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由 Catalin Marinas 提交于
All the calls to gic_secondary_init() pass 0 as the first argument. Since this function is called on each CPU when starting, it can be done in a platform-independent way via a CPU notifier registered by the GIC code. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NStephen Warren <swarren@nvidia.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: NRob Herring <rob.herring@calxeda.com> Acked-by: NSimon Horman <horms+renesas@verge.net.au> Tested-by: NSimon Horman <horms+renesas@verge.net.au> Acked-by: NSrinidhi Kasagar <srinidhi.kasagar@stericsson.com> Tested-by: NDinh Nguyen <dinguyen@altera.com> Acked-by: NNicolas Pitre <nico@linaro.org> Tested-by: NMarc Zyngier <marc.zyngier@arm.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: David Brown <davidb@codeaurora.org> Cc: Bryan Huntsman <bryanh@codeaurora.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Magnus Damm <magnus.damm@gmail.com> Cc: Shiraz Hashim <shiraz.hashim@st.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Barry Song <baohua.song@csr.com>
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- 30 1月, 2013 1 次提交
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由 Shawn Guo 提交于
Add WAIT mode (ARM core clock gating) support to imx6q cpuidle driver. As WAIT mode is broken on imx6q TO 1.0 and 1.1, it only enables the support for revision 1.2 with chicken bit set. Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
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- 14 1月, 2013 1 次提交
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由 Shawn Guo 提交于
It's buggy to disable the cpu that is being hot-unplugged in .cpu_die hook which runs on the cpu itself. Instead, it should be done in .cpu_kill which runs on the thread (another cpu) that asks for shutting down the cpu. Move imx_enable_cpu(cpu, false) call into .cpu_kill hook, and leave the cpu to be hot-unplugged in WFI within .cpu_die, so that we can get a more stable cpu hot-plug operation. Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
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- 13 1月, 2013 1 次提交
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由 Rob Herring 提交于
Now that we have GIC moved to drivers/irqchip and all GIC DT init for platforms using irqchip_init, move gic.h and update the remaining includes. Signed-off-by: NRob Herring <rob.herring@calxeda.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Russell King <linux@arm.linux.org.uk> Cc: Anton Vorontsov <avorontsov@mvista.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: David Brown <davidb@codeaurora.org> Cc: Daniel Walker <dwalker@fifo99.com> Cc: Bryan Huntsman <bryanh@codeaurora.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Magnus Damm <magnus.damm@gmail.com> Cc: Viresh Kumar <viresh.linux@gmail.com> Cc: Shiraz Hashim <shiraz.hashim@st.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Samuel Ortiz <sameo@linux.intel.com>
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- 11 1月, 2013 1 次提交
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由 Rob Herring 提交于
In preparation of moving gic code to drivers/irqchip, remove the direct platform dependencies on gic_raise_softirq. Move the setup of smp_cross_call into the gic code and use arch_send_wakeup_ipi_mask function to trigger wake-up IPIs. Signed-off-by: NRob Herring <rob.herring@calxeda.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: David Brown <davidb@codeaurora.org> Cc: Daniel Walker <dwalker@fifo99.com> Cc: Bryan Huntsman <bryanh@codeaurora.org> Acked-by: NTony Lindgren <tony@atomide.com> Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Magnus Damm <magnus.damm@gmail.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Cc: Shiraz Hashim <shiraz.hashim@st.com> Acked-by: NStephen Warren <swarren@nvidia.com> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Linus Walleij <linus.walleij@linaro.org> Acked-by: NOlof Johansson <olof@lixom.net>
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- 15 10月, 2012 2 次提交
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由 Shawn Guo 提交于
It moves a bunch of header files included in hardware.h and itself from mach-imx/include/mach to mach-imx, and updates users to include hardware.h rather than mach/hardware.h. The files in mach-imx/devices will need to include "../hardware.h". Signed-off-by: NShawn Guo <shawn.guo@linaro.org> Acked-by: NSascha Hauer <s.hauer@pengutronix.de> Acked-by: NArnd Bergmann <arnd@arndb.de>
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由 Shawn Guo 提交于
Rename mach-imx/include/mach/common.h to mach-imx/common.h and update all users to include common.h rather than mach/common.h. It also removes an unneeded inclusion to common.h in mach-imx/devices/devices.c. Signed-off-by: NShawn Guo <shawn.guo@linaro.org> Acked-by: NSascha Hauer <s.hauer@pengutronix.de> Acked-by: NArnd Bergmann <arnd@arndb.de>
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- 14 9月, 2012 1 次提交
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由 Marc Zyngier 提交于
Convert the imx6q platform to use struct smp_operations to provide its SMP and CPU hotplug operations. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NNicolas Pitre <nico@linaro.org> Cc: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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- 31 10月, 2011 1 次提交
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由 Shawn Guo 提交于
It adds smp and cpu hotplug support for imx6q. Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
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