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2006-03-25[ARM] SMP: don't set cpu_*_map in smp_prepare_boot_cpuRussell King
The recent addition of boot_cpu_init() implements the initialisation of the online, present and possible cpu maps for the boot CPU, so there is no reason to duplicate this in the architecture smp_prepare_boot_cpu() hook. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-02-16[ARM] Fix SMP initialisation oopsRussell King
A change to the SMP initialisation caused the following oops: CPU1: Booted secondary processor CPU1: D VIPT write-back cache CPU1: I cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets CPU1: D cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets <7>Calibrating delay loop... 83.14 BogoMIPS (lpj=415744) <1>Unable to handle kernel NULL pointer dereference at virtual address 0000001c ... PC is at enqueue_task+0x1c/0x64 LR is at activate_task+0xcc/0xe4 SMP initialisation now requires cpu_possible_map to be initialised in setup_arch(). Move this from smp_prepare_cpus() to smp_init_cpus() and call it from our setup_arch() if CONFIG_SMP is enabled. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-12[PATCH] arm: task_stack_page()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-12[ARM] Restore apparant pointless change in arch/arm/kernel/smp.cRussell King
Restore smp.c back to how it used to be. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-09[PATCH] sched: disable preempt in idle tasksNick Piggin
Run idle threads with preempt disabled. Also corrected a bugs in arm26's cpu_idle (make it actually call schedule()). How did it ever work before? Might fix the CPU hotplugging hang which Nigel Cunningham noted. We think the bug hits if the idle thread is preempted after checking need_resched() and before going to sleep, then the CPU offlined. After calling stop_machine_run, the CPU eventually returns from preemption and into the idle thread and goes to sleep. The CPU will continue executing previous idle and have no chance to call play_dead. By disabling preemption until we are ready to explicitly schedule, this bug is fixed and the idle threads generally become more robust. From: alexs <ashepard@u.washington.edu> PPC build fix From: Yoichi Yuasa <yuasa@hh.iij4u.or.jp> MIPS build fix Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-08[ARM SMP] Add core ARM support for local timersRussell King
Add infrastructure for supporting per-cpu local timers to update the profiling information and update system time accounting. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-08[ARM] More sparse fixesRussell King
arch/arm/kernel/irq.c:998:26: warning: Using plain integer as NULL pointer arch/arm/kernel/smp.c:145:25: warning: Using plain integer as NULL pointer arch/arm/kernel/smp.c:362:5: warning: symbol 'smp_call_function_on_cpu' was not declared. Should it be static? drivers/video/amba-clcd.c:521:12: warning: symbol 'amba_clcdfb_init' was not declared. Should it be static? Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-08[ARM SMP] Fix some sparse warnings in SMP codeRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-02[ARM SMP] Add hotplug CPU infrastructureRussell King
This patch adds the infrastructure to support hotplug CPU on ARM platforms. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-02[ARM SMP] Fix a couple of warningsRussell King
Use *cpus_addr() to display the mask of pending/to be called CPUs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-02[ARM SMP] Track CPU idle threadsRussell King
Track the idle thread task_struct for each CPU. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-04[ARM] Stack starts at THREAD_START_SP offset, not THREAD_SIZE-8Russell King
Use the correct constants. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-28[ARM SMP] Ensure secondary CPUs have a clean TLBRussell King
Since ARMv6 CPUs will not flush the TLB on context switches, it is possible that we may end up with some global TLB entries remaining present, eventually upsetting userspace. Explicitly flush the entire TLB on secondary CPUs as they startup, after we have switched to the init_mm page tables. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-17[PATCH] ARM SMP: Mark CPU init functions/data with __cpuinit/...dataRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-11[PATCH] ARM SMP: Initialise cpu_present_mapRussell King
Rather than relying on the fixup code in init/main.c, explicitly initialise cpu_present_map. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-11[PATCH] ARM SMP: We list IRQs for present CPUs, not online CPUsRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-11[PATCH] ARM SMP: Rename cpu_present_mask to cpu_possible_mapRussell King
The kernel's terminology for this is cpu_possible_map not cpu_present_mask. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-28[PATCH] ARM SMP: Add IPI support code for SMP TLB flushingRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-19[PATCH] ARM SMP: Messages about CPUs should be prefixed by CPU%uRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-18[PATCH] ARM SMP: Add support for startup of secondary processorsRussell King
Create a temporary page table to startup secondary processors. This page table must have a 1:1 virtual/physical mapping for the kernel in addition to the standard mappings to ensure that the secondary CPU can enable its MMU safely. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!