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* rcu: Simplify rcu_pending()/rcu_check_callbacks() APIPaul E. McKenney2009-08-231-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | All calls from outside RCU are of the form: if (rcu_pending(cpu)) rcu_check_callbacks(cpu, user); This is silly, instead we put a call to rcu_pending() in rcu_check_callbacks(), and then make the outside calls be to rcu_check_callbacks(). This cuts down on the code a bit and also gives the compiler a better chance of optimizing. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: laijs@cn.fujitsu.com Cc: dipankar@in.ibm.com Cc: akpm@linux-foundation.org Cc: mathieu.desnoyers@polymtl.ca Cc: josht@linux.vnet.ibm.com Cc: dvhltc@us.ibm.com Cc: niv@us.ibm.com Cc: peterz@infradead.org Cc: rostedt@goodmis.org LKML-Reference: <125097461311-git-send-email-> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* [IA64] remove obsolete irq_desc_t typedefThomas Gleixner2009-06-151-1/+1
| | | | | | | | | | | | | | | | | The defines and typedefs (hw_interrupt_type, no_irq_type, irq_desc_t) have been kept around for migration reasons. After more than two years it's time to remove them finally. This patch cleans up one of the remaining users. When all such patches hit mainline we can remove the defines and typedefs finally. Impact: cleanup Convert the last remaining users and remove the typedef. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] xen_domu_defconfig: fix build issues/warningsJan Beulich2009-05-051-2/+0
| | | | | | | | | | - drivers/xen/events.c did not compile - xen_setup_hook caused a modpost section warning - the use of u64 (instead of unsigned long long) together with a %llu in drivers/xen/balloon.c caused a compiler warning Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64: remove some warnings.Isaku Yamahata2009-03-271-2/+7
| | | | | | | | | | | | | | This patch removes the following warnings and related ones. Plus some cosmetics. arch/ia64/kernel/patch.c:112: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast arch/ia64/kernel/patch.c:135: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast arch/ia64/kernel/patch.c:166: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast arch/ia64/kernel/patch.c:202: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast arch/ia64/kernel/patch.c:220: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/xen: fix the link error.Isaku Yamahata2009-03-271-1/+1
| | | | | | | | | | | This patch fixes the following link error with xen_domu_defconfig. Depending on compiler version, it doesn't link as follows. So remove const and use __initdata for xen_iosapic_ops. > arch/ia64/xen/xen_pv_ops.c:878: error: xen_iosapic_ops causes a section type conflict Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/bp/xen: implemented binary patchable pv_cpu_ops.Isaku Yamahata2009-03-262-0/+667
| | | | | | | implemented xen binary patch for pv_cpu_ops. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/xen/gate.S: xen gate page paravirtualizationIsaku Yamahata2009-03-261-0/+1
| | | | | | | xen gate page paravirtualization Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/xen: define xen specific gate page.Isaku Yamahata2009-03-263-1/+50
| | | | | | | | | define xen specific gate page. At this phase bits in the gate page is same to native. At the next phase, it will be paravirtualized. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/xen/pv_time_ops: implement sched_clock.Isaku Yamahata2009-03-261-0/+48
| | | | | | | paravirtualize sched_clock. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/xen: paravirtualize read/write ar.itc and ar.itmIsaku Yamahata2009-03-261-1/+79
| | | | | | | paravirtualize ar.itc and ar.itm in order to support save/restore. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/xen: preliminary to paravirtualizing fsys.S for xen.Isaku Yamahata2009-03-262-1/+15
| | | | | | | | | | This is a preliminary patch to paravirtualizing fsys.S. compile fsys.S twice one for native and one for xen, and switch them at run tine. Later fsys.S will be paravirtualized. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/xen: use __initconst instead of __initdata for const dataIsaku Yamahata2009-03-261-1/+1
| | | | | | | | use __initconst instead of __initdata for const data like ec8148de85a73a3be397a59b6d8f4f32cf2dd254 Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] xen_domu build fixTony Luck2009-02-191-2/+2
| | | | | | | arch/ia64/xen/xen_pv_ops.c:156: error: xen_init_ops causes a section type conflict arch/ia64/xen/xen_pv_ops.c:340: error: xen_iosapic_ops causes a section type conflict Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] fixes configs and add default config for ia64 xen domUIsaku Yamahata2009-02-191-2/+1
| | | | | | | | This patch fixes xen related Kconfigs and add default config file for ia64 xen domU. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <aegl@agluck-desktop.(none)>
* [IA64] Update to use account_{steal,idle}_ticksIsaku Yamahata2009-01-151-2/+2
| | | | | | | | | | | | | | | | | This patch fixes the following errors caused by 79741dd35713ff4f6fd0eafd59fa94e8a4ba922d which changed the prototypes of account_steal_time() and account_idle_time(). > CC arch/ia64/xen/time.o > arch/ia64/xen/time.c: In function 'consider_steal_time': > arch/ia64/xen/time.c:132: warning: passing argument 1 of 'account_steal_time' makes integer from pointer without a cast > arch/ia64/xen/time.c:132: error: too many arguments to function 'account_steal_time' > arch/ia64/xen/time.c:133: warning: passing argument 1 of 'account_steal_time' makes integer from pointer without a cast > arch/ia64/xen/time.c:133: error: too many arguments to function 'account_steal_time' Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] xen: fix xen_get_eflags.Isaku Yamahata2008-11-201-1/+1
| | | | | | | fix xen_get_eflags. It doesn't take any argument. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops: update Kconfig for paravirtualized guest and xen.Isaku Yamahata2008-10-171-0/+26
| | | | | | | | | | introduce CONFIG_PARAVIRT_GUEST, CONFIG_PARAVIRT for paravirtualized guest. introduce CONFIG_XEN, CONFIG_IA64_XEN_GUEST for xen. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/xen: preliminary support for save/restore.Isaku Yamahata2008-10-174-1/+99
| | | | | | | | | preliminary support for save/restore. Although Save/restore isn't fully working yet, this patch is necessary to compile. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/xen: define xen machine vector for domU.Isaku Yamahata2008-10-172-0/+6
| | | | | | | define xen machine vector for domU. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/xen: implement xen pv_time_ops.Isaku Yamahata2008-10-174-1/+206
| | | | | | | | | implement xen pv_time_ops to account steal time. Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/xen: implement xen pv_irq_ops.Isaku Yamahata2008-10-174-1/+473
| | | | | | | | | | | implement xen pv_irq_ops to paravirtualize irq handling with xen event channel. Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Akio Takebe <takebe_akio@jp.fujitsu.com> Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/xen: implement xen pv_iosapic_ops.Isaku Yamahata2008-10-171-0/+52
| | | | | | | | implement xen pv_iosapic_ops for xen paravirtualized iosapic. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/xen: paravirtualize entry.S for ia64/xen.Isaku Yamahata2008-10-172-1/+19
| | | | | | | paravirtualize entry.S for ia64/xen by multi compile. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/xen: paravirtualize ivt.S for xen.Isaku Yamahata2008-10-172-1/+67
| | | | | | | paravirtualize ivt.S for xen by multi compile. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/xen: define xen pv_cpu_ops.Isaku Yamahata2008-10-171-0/+114
| | | | | | | | | define xen pv_cpu_ops which implementes xen paravirtualized privileged instructions. Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/xen: define xen pv_init_ops for various xen initialization.Isaku Yamahata2008-10-173-1/+207
| | | | | | | | | | | | | This patch implements xen version of pv_init_ops to do various xen initialization. This patch also includes ia64 counter part of x86 xen early printk support patches. Signed-off-by: Akio Takebe <takebe_akio@jp.fujitsu.com> Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/pv_ops/xen: elf note based xen startup.Isaku Yamahata2008-10-173-1/+150
| | | | | | | | | | | | This patch enables elf note based xen startup for IA-64, which gives the kernel an early hint for running on xen like x86 case. In order to avoid the multi entry point, presumably extending booting protocol(i.e. extending struct ia64_boot_param) would be necessary. It probably means that elilo also needs modification. Signed-off-by: Qing He <qing.he@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/xen: implement arch specific part of xen grant table.Isaku Yamahata2008-10-172-1/+156
| | | | | | | | | | | Xen implements grant tables which is for sharing pages with guest domains. This patch implements arch specific part of grant table initialization. and xen_alloc_vm_area()/xen_free_vm_area() which are helper functions for xen grant table. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/xen: xencomm conversion functions for hypercallsIsaku Yamahata2008-10-173-1/+453
| | | | | | | | | | | | | On ia64/xen, pointer arguments for hypercall is passed by pseudo physical address(guest physical address.) So such hypercalls needs address conversion functions. This patch implements concrete conversion functions for such hypercalls. Signed-off-by: Akio Takebe <takebe_akio@jp.fujitsu.com> Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/xen: implement the arch specific part of xencomm.Isaku Yamahata2008-10-172-1/+95
| | | | | | | | | | | | | On ia64/xen, pointer argument for the hypercall is passed by pseudo physical address (guest physical address.) So it is necessary to convert virtual address into pseudo physical address right before issuing hypercall. The frame work is called xencomm. This patch implements arch specific part. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Cc: Akio Takebe <takebe_akio@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/xen: define helper functions for xen hypercalls.Isaku Yamahata2008-10-172-0/+96
introduce helper functions for xen hypercalls which traps to hypervisor. Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
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