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* x86: get rid of smp_32.c and smp_64.cGlauber Costa2008-04-171-10/+0
| | | | | | | | | This patch merges the copyright notices, and valuable comments that were left back on smp_{32,64}.c. With that, files are empty, and are deleted Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: create tlb filesGlauber Costa2008-04-171-275/+0
| | | | | | | | this patch creates tlb_32.c and tlb_64.c, with tlb-related functions that used to live in smp*.c files. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: create smp.cGlauber Costa2008-04-171-205/+0
| | | | | | | | this patch moves all the functions and data structures that look like exactly the same from smp_{32,64}.c to smp.c Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: unify smp_send_stopGlauber Costa2008-04-171-1/+2
| | | | | | | | function definition is moved to common header. x86_64 version is now called native_smp_send_stop Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: make stop_this_cpu looks exactly equal in both archesGlauber Costa2008-04-171-2/+3
| | | | | | | | | with the hlt_works change, it is possible to have i386 and x86_64 stop_this_cpu() looking exactly the same. They can, after that, be merged. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: change x86_64 smp_call_function_mask to look alike i386Glauber Costa2008-04-171-41/+16
| | | | | | | | | the two versions (the inner version, and the outer version, that takes the locks) of smp_call_function_mask are made into one. With the changes, i386 and x86_64 versions look exactly the same. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: provide __smp_call_functionGlauber Costa2008-04-171-1/+33
| | | | | | | | | | | This function is used in smp_send_stop(). It's like smp_call_function_mask, but always go to all online cpus, and does not take any locks. It is added to x86_64, but will soon be unified in a common file Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: create smpcommon.cGlauber Costa2008-04-171-56/+0
| | | | | | | | | | | | | This patch creates smpcommon.c with functions that are equal between architectures. The i386-only init_gdt is ifdef'd. Note that smpcommon.o figures twice in the Makefile: this is because sub-architectures like voyager that does not use the normal smp_$(BITS) files also have to access them Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: remove irqs disabled warning.Glauber Costa2008-04-171-3/+0
| | | | | | | there's already a warning in the topmost function Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: remove export for smp_call_function_mask.Glauber Costa2008-04-171-1/+0
| | | | | | | | with this removal, exports for both i386 and x86_64, regarding the "smp_call_function" series are now the same. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: unify smp_cpus_doneGlauber Costa2008-04-171-0/+2
| | | | | | | | definition is moved to common header. x86_64 version is now called native_smp_cpus_done Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: unify smp_prepare_cpusGlauber Costa2008-04-171-0/+1
| | | | | | | | definition is moved to common header. x86_64 version is now called native_smp_prepare_cpus Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: unify prepare_boot_cpuGlauber Costa2008-04-171-0/+1
| | | | | | | | definition is moved to common header. x86_64 version is now called native_prepare_boot_cpu Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: unify __cpu_up.Glauber Costa2008-04-171-0/+1
| | | | | | | | function definition is moved to common header. x86_64 version is now called native_cpu_up Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: unify smp_call_function_maskGlauber Costa2008-04-171-3/+4
| | | | | | | | definition is moved to common header, x86_64 function name now is native_smp_call_function_mask Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: merge smp_send_rescheduleGlauber Costa2008-04-171-2/+5
| | | | | | | | function definition is moved to common header, x86_64 version is now called native_smp_send_reschedule Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: move smp_ops extern declaration to common headerGlauber Costa2008-04-171-0/+2
| | | | | | | | the smp_ops symbol is temporarily defined in smp_64.c, but it will soon be unified Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: voluntary leave_mm before entering ACPI C3Venki Pallipadi2008-01-301-1/+2
| | | | | | | | | | | | | | | | | | | | | Aviod TLB flush IPIs during C3 states by voluntary leave_mm() before entering C3. The performance impact of TLB flush on C3 should not be significant with respect to C3 wakeup latency. Also, CPUs tend to flush TLB in hardware while in C3 anyways. On a 8 logical CPU system, running make -j2, the number of tlbflush IPIs goes down from 40 per second to ~ 0. Total number of interrupts during the run of this workload was ~1200 per second, which makes it ~3% savings in wakeups. There was no measurable performance or power impact however. [ akpm@linux-foundation.org: symbol export fixes. ] Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: rename the struct pt_regs members for 32/64-bit consistencyH. Peter Anvin2008-01-301-1/+1
| | | | | | | | | | | | | | | We have a lot of code which differs only by the naming of specific members of structures that contain registers. In order to enable additional unifications, this patch drops the e- or r- size prefix from the register names in struct pt_regs, and drops the x- prefixes for segment registers on the 32-bit side. This patch also performs the equivalent renames in some additional places that might be candidates for unification in the future. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: cleanup tlbflush.h variantsThomas Gleixner2008-01-301-6/+6
| | | | | | | | | Bring the tlbflush.h variants into sync to prepare merging and paravirt support. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: smp_64.c: remove unused exports and cleanup while at itThomas Gleixner2008-01-301-39/+35
| | | | | | | | | The exports are nowhere used. There is even no reason why they were ever introduced. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: implement missing x86_64 function smp_call_function_mask()Laurent Vivier2007-10-191-56/+63
| | | | | | | | | | | | | | | | | This patch defines the missing function smp_call_function_mask() for x86_64, this is more or less a cut&paste of i386 function. It removes also some duplicate code. This function is needed by KVM to execute a function on some CPUs. AK: Fixed description AK: Moved WARN_ON(irqs_disabled) one level up to not warn in the panic case. [ tglx: arch/x86 adaptation ] Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: expand /proc/interrupts to include missing vectors, v2Joe Korty2007-10-171-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add missing IRQs and IRQ descriptions to /proc/interrupts. /proc/interrupts is most useful when it displays every IRQ vector in use by the system, not just those somebody thought would be interesting. This patch inserts the following vector displays to the i386 and x86_64 platforms, as appropriate: rescheduling interrupts TLB flush interrupts function call interrupts thermal event interrupts threshold interrupts spurious interrupts A threshold interrupt occurs when ECC memory correction is occuring at too high a frequency. Thresholds are used by the ECC hardware as occasional ECC failures are part of normal operation, but long sequences of ECC failures usually indicate a memory chip that is about to fail. Thermal event interrupts occur when a temperature threshold has been exceeded for some CPU chip. IIRC, a thermal interrupt is also generated when the temperature drops back to a normal level. A spurious interrupt is an interrupt that was raised then lowered by the device before it could be fully processed by the APIC. Hence the apic sees the interrupt but does not know what device it came from. For this case the APIC hardware will assume a vector of 0xff. Rescheduling, call, and TLB flush interrupts are sent from one CPU to another per the needs of the OS. Typically, their statistics would be used to discover if an interrupt flood of the given type has been occuring. AK: merged v2 and v4 which had some more tweaks AK: replace Local interrupts with Local timer interrupts AK: Fixed description of interrupt types. [ tglx: arch/x86 adaptation ] [ mingo: small cleanup ] Signed-off-by: Joe Korty <joe.korty@ccur.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Tim Hockin <thockin@hockin.org> Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86_64: move kernelThomas Gleixner2007-10-111-0/+523
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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