- 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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- 17 6月, 2013 1 次提交
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由 Magnus Damm 提交于
Let EMEV2 make use of shmobile_boot_fn and shmobile_boot_arg together with shmobile_boot_scu and the SCU base address. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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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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- 13 3月, 2013 6 次提交
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由 Magnus Damm 提交于
Update the SMP code for EMEV2 to make use of the shared SCU function scu_power_mode() together with the early setup code in shmobile_secondary_vector_scu. With this patch in place the secondary CPUs modify the SCU setting during early boot instead of letting other CPUs deal with the coherency setting before boot. In other words, we used to setup coherency before boot in emev2_boot_secondary() but that bit is now instead handled by the code in shmobile_secondary_vector_scu. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Magnus Damm 提交于
Update the code in headsmp-scu.S to use a global shmobile_scu_base variable both for convenient SCU base address storage and for the early SCU setup code in shmobile_secondary_vector_scu. With this patch applied r8a7779, sh73a0 and EMEV2 all make use of the global shmobile_scu_base variable. However only sh73a0 makes use of the SCU bring up code in shmobile_secondary_vector_scu. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Magnus Damm 提交于
Rename the static scu_base variable into shmobile_scu_base. Later in the series the shmobile_scu_base variable will be made into a global variable so this is preparation only. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Magnus Damm 提交于
Reduce the number of lines of code in smp-emev2.c by getting rid of the emev2_get_core_count() function. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Magnus Damm 提交于
Move the boot vector setup code for the EMEV2 SoC to match the sh73a0 and r8a7779 implementations. With this in place all SoC specific SMP implementations for mach-shmobile uses the ->smp_prepare_cpus() callback to setup the boot vector. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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由 Magnus Damm 提交于
Remove partial CPU hotplug support from EMEV2 SMP code. The upstream EMEV2 SMP support code has no CPU shutdown or reset ability so we cannot reboot the secondary CPU cores. Regular SMP operation is however still working as expected. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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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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- 13 11月, 2012 1 次提交
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由 Simon Horman 提交于
This reverts commit 865d90f8. The code changes the flags of the wrong cpus - which breaks the whole bootup of secondary CPUs. Cc: Bastian Hecht <hechtb@gmail.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
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- 06 11月, 2012 1 次提交
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由 Bastian Hecht 提交于
We can remove the extra code of modify_scu_cpu_psr() and use the cleaner generic ARM helper scu_power_mode(). As every CPU only deals with its own power register and scu_power_mode() operates with 8-bit accesses, we save the locking overhead too. Signed-off-by: NBastian Hecht <hechtb@gmail.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
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- 14 9月, 2012 1 次提交
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由 Marc Zyngier 提交于
Convert shmobile SMP platforms to use struct smp_operations to provide their SMP and CPU hotplug operations. Cc: Paul Mundt <lethal@linux-sh.org> Cc: Magnus Damm <magnus.damm@gmail.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NNicolas Pitre <nico@linaro.org> Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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- 25 8月, 2012 1 次提交
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由 Stephen Boyd 提交于
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org> Acked-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 18 5月, 2012 1 次提交
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由 Magnus Damm 提交于
This is V3 of Emma Mobile EV2 SMP support. At this point only the most basic form of SMP operation is supported. TWD and CPU Hotplug support is excluded. Tied to both the Emma Mobile EV2 and the KZM9D board due to the need to switch on board in platsmp.c and the newly introduced need for static mappings. The static mappings are needed to allow hardware acces early during boot when SMP is initialized. This early requirement forces us to also map in the SMU registers. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
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