| Commit message (Collapse) | Author | Age |
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Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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These two IOMMUs can implement the current version of this API. So
select the API if one or both of these IOMMU drivers is selected.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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Impact: file renamed
The code in the vtd.c file can be reused for other IOMMUs as well. So
rename it to make it clear that it handle more than VT-d.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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* 'cputime' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
[PATCH] fast vdso implementation for CLOCK_THREAD_CPUTIME_ID
[PATCH] improve idle cputime accounting
[PATCH] improve precision of idle time detection.
[PATCH] improve precision of process accounting.
[PATCH] idle cputime accounting
[PATCH] fix scaled & unscaled cputime accounting
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The cpu time spent by the idle process actually doing something is
currently accounted as idle time. This is plain wrong, the architectures
that support VIRT_CPU_ACCOUNTING=y can do better: distinguish between the
time spent doing nothing and the time spent by idle doing work. The first
is accounted with account_idle_time and the second with account_system_time.
The architectures that use the account_xxx_time interface directly and not
the account_xxx_ticks interface now need to do the check for the idle
process in their arch code. In particular to improve the system vs true
idle time accounting the arch code needs to measure the true idle time
instead of just testing for the idle process.
To improve the tick based accounting as well we would need an architecture
primitive that can tell us if the pt_regs of the interrupted context
points to the magic instruction that halts the cpu.
In addition idle time is no more added to the stime of the idle process.
This field now contains the system time of the idle process as it should
be. On systems without VIRT_CPU_ACCOUNTING this will always be zero as
every tick that occurs while idle is running will be accounted as idle
time.
This patch contains the necessary common code changes to be able to
distinguish idle system time and true idle time. The architectures with
support for VIRT_CPU_ACCOUNTING need some changes to exploit this.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Removed duplicated #include's in:
arch/x86/kernel/mpparse.c
arch/x86/kernel/nmi.c
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, solve 80 columns wrap problems
It would be cleaner to rename all the mpc->mpc_X fields to
mpc->X - that alone would give 4 characters per usage site.
(we already know that it's an 'mpc' entity -
no need to duplicate that in the field too)
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, solve 80 columns wrap problems
It would be cleaner to rename all the mpc->oem_X fields to
mpc->X - that alone would give 4 characters per usage site.
(we already know that it's an 'oem' entity -
no need to duplicate that in the field too)
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, solve 80 columns wrap problems
It would be cleaner to rename all the mpc->mpc_X fields to
mpc->X - that alone would give 4 characters per usage site.
(we already know that it's an 'mpc' entity -
no need to duplicate that in the field too)
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, solve 80 columns wrap problems
It would be cleaner to rename all the mpc->mpc_X fields to
mpc->X - that alone would give 4 characters per usage site.
(we already know that it's an 'mpc' entity -
no need to duplicate that in the field too)
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, solve 80 columns wrap problems
It would be cleaner to rename all the mpc->mpc_X fields to
mpc->X - that alone would give 4 characters per usage site.
(we already know that it's an 'mpc' entity -
no need to duplicate that in the field too)
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, solve 80 columns wrap problems
It would be cleaner to rename all the mpc->mpc_X fields to
mpc->X - that alone would give 4 characters per usage site.
(we already know that it's an 'mpc' entity -
no need to duplicate that in the field too)
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, solve 80 columns wrap problems
It would be cleaner to rename all the mpc->mpc_X fields to
mpc->X - that alone would give 4 characters per usage site.
(we already know that it's an 'mpc' entity -
no need to duplicate that in the field too)
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
Fix:
WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>
WARNING: Use #include <linux/percpu.h> instead of <asm/percpu.h>
WARNING: Use #include <linux/topology.h> instead of <asm/topology.h>
WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable
ERROR: spaces required around that '?' (ctx:VxW)
ERROR: spaces required around that ':' (ctx:VxV)
total: 2 errors, 4 warnings
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, fix style problems
Fix:
WARNING: Use #include <linux/acpi.h> instead of <asm/acpi.h>
WARNING: Use #include <linux/io.h> instead of <asm/io.h>
WARNING: Use #include <linux/delay.h> instead of <asm/delay.h>
total: 0 errors, 3 warnings
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
Fix:
WARNING: Use #include <linux/io.h> instead of <asm/io.h>
WARNING: Use #include <linux/delay.h> instead of <asm/delay.h>
ERROR: trailing whitespace
WARNING: externs should be avoided in .c files
ERROR: space required after that ',' (ctx:VxV)
WARNING: space prohibited between function name and open parenthesis '('
total: 2 errors, 4 warnings
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
Fix:
WARNING: Use #include <linux/acpi.h> instead of <asm/acpi.h>
WARNING: Use #include <linux/io.h> instead of <asm/io.h>
WARNING: Use #include <linux/delay.h> instead of <asm/delay.h>
ERROR: code indent should use tabs where possible
total: 1 errors, 3 warnings
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
Fix:
WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
ERROR: "(foo*)" should be "(foo *)"
ERROR: space required after that ',' (ctx:VxV)
total: 5 errors, 1 warnings
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
Fix:
ERROR: "foo * bar" should be "foo *bar"
total: 2 errors, 0 warnings
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
Fix:
WARNING: Use #include <linux/nmi.h> instead of <asm/nmi.h>
total: 0 errors, 1 warnings
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
Fix:
ERROR: space prohibited after that open parenthesis '('
ERROR: space prohibited before that close parenthesis ')'
total: 4 errors, 0 warnings
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, fix style problems, more readable
Fix:
WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>
ERROR: code indent should use tabs where possible
total: 9 errors, 2 warnings
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
Fix:
WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>
total: 0 errors, 1 warnings
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
Fix:
WARNING: Use #include <linux/nmi.h> instead of <asm/nmi.h>
WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>
WARNING: Use #include <linux/io.h> instead of <asm/io.h>
total: 0 errors, 3 warnings
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
Fix:
WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
WARNING: Use #include <linux/io.h> instead of <asm/io.h>
WARNING: Use #include <linux/kdebug.h> instead of <asm/kdebug.h>
WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>
ERROR: "foo * bar" should be "foo *bar"
ERROR: trailing whitespace
ERROR: spaces required around that ':' (ctx:WxO)
ERROR: spaces required around that ':' (ctx:OxW)
total: 7 errors, 4 warnings
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
Fix:
WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>
WARNING: Use #include <linux/nmi.h> instead of <asm/nmi.h>
WARNING: Use #include <linux/timex.h> instead of <asm/timex.h>
WARNING: line over 80 characters
ERROR: else should follow close brace '}'
total: 2 errors, 4 warnings
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, solve 80 columns wrap problems
mpc_config_oemtable should be renamed to mpc_oemtable.
The reason: the 'c' in MPC already means 'config' -
no need to repeat that in the type name.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, solve 80 columns wrap problems
mpc_config_lintsrc should be renamed to mpc_lintsrc.
The reason: the 'c' in MPC already means 'config' -
no need to repeat that in the type name.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, solve 80 columns wrap problems
mpc_config_intsrc should be renamed to mpc_intsrc.
The reason: the 'c' in MPC already means 'config' -
no need to repeat that in the type name.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, solve 80 columns wrap problems
mpc_config_ioapic should be renamed to mpc_ioapic.
The reason: the 'c' in MPC already means 'config' -
no need to repeat that in the type name.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, solve 80 columns wrap problems
mpc_config_processor should be renamed to mpc_cpu.
The reason: the 'c' in MPC already means 'config' -
no need to repeat that in the type name.
Plus 'processor' is a lot longer than 'cpu' - so we try to use 'cpu' in all
type names, as much as possible.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, solve 80 columns wrap problems
mpc_config_bus should be renamed to mpc_bus.
The reason: the 'c' in MPC already means 'config' -
no need to repeat that in the type name.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, solve 80 columns wrap problems
mp_config_table should be renamed to mpc_table.
The reason: the 'c' in MPC already means 'config' -
no need to repeat that in the type name.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: fix debug/crash printout
Since errorcode is popped out, RIP is on the top of the stack.
Use real RIP value instead of wrong CS.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: reduce printk noise
The message "alloc irq_2_pin on cpu 0 node 0" is printed way too often.
% dmesg|grep irq_2_pin|wc -l
20
Get rid of the debug printks.
Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: fix crash on x86/UV
UV is the SGI "UltraViolet" machine, which is x86_64 based.
BAU is the "Broadcast Assist Unit", used for TLB shootdown in UV.
This patch removes the allocation and initialization of an unused table.
This table is left over from a development test mode. It is unused in
the present code.
And it was incorrectly initialized: 8 entries allocated but 17 initialized,
causing slab corruption.
This patch should go into 2.6.27 and 2.6.28 as well as the current tree.
Diffed against 2.6.28 (linux-next, 12/30/08)
Signed-off-by: Cliff Wickman <cpw@sgi.com>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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The pda rework (commit 3461b0af025251bbc6b3d56c821c6ac2de6f7209)
to remove static boot cpu pdas introduced a performance bug.
_boot_cpu_pda is the actual pda used by the boot cpu and is definitely
not "__read_mostly" and ended up polluting the read mostly section with
writes. This bug caused regression of about 8-10% on certain syscall
intensive workloads.
Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Acked-by: Mike Travis <travis@sgi.com>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Conflicts:
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (66 commits)
x86: export vector_used_by_percpu_irq
x86: use logical apicid in x2apic_cluster's x2apic_cpu_mask_to_apicid_and()
sched: nominate preferred wakeup cpu, fix
x86: fix lguest used_vectors breakage, -v2
x86: fix warning in arch/x86/kernel/io_apic.c
sched: fix warning in kernel/sched.c
sched: move test_sd_parent() to an SMP section of sched.h
sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc>0
sched: activate active load balancing in new idle cpus
sched: bias task wakeups to preferred semi-idle packages
sched: nominate preferred wakeup cpu
sched: favour lower logical cpu number for sched_mc balance
sched: framework for sched_mc/smt_power_savings=N
sched: convert BALANCE_FOR_xx_POWER to inline functions
x86: use possible_cpus=NUM to extend the possible cpus allowed
x86: fix cpu_mask_to_apicid_and to include cpu_online_mask
x86: update io_apic.c to the new cpumask code
x86: Introduce topology_core_cpumask()/topology_thread_cpumask()
x86: xen: use smp_call_function_many()
x86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c
...
Fixed up trivial conflict in kernel/time/tick-sched.c manually
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Impact: build fix
lguest can be built as a module and makes use of this new symbol:
ERROR: "vector_used_by_percpu_irq" [drivers/lguest/lg.ko] undefined!
export it.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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These commits:
commit 95d313cf1c1ecedc8bec5727b09bdacbf67dfc45
Author: Mike Travis <travis@sgi.com>
Date: Tue Dec 16 17:33:54 2008 -0800
x86: Add cpu_mask_to_apicid_and
and
commit 6eeb7c5a99434596c5953a95baa17d2f085664e3
Author: Mike Travis <travis@sgi.com>
Date: Tue Dec 16 17:33:55 2008 -0800
x86: update add-cpu_mask_to_apicid_and to use struct cpumask*
broke interrupt delivery on x2apic platforms. As x2apic cluster mode uses
logical delivery mode, we need to use logical apicid instead of physical apicid
in x2apic_cpu_mask_to_apicid_and()
Impact: fixes the broken interrupt delivery issue on generic x2apic platforms.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Mike Travis <travis@sgi.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: fix lguest, clean up
32-bit lguest used used_vectors to record vectors, but that model of
allocating vectors changed and got broken, after we changed vector
allocation to a per_cpu array.
Try enable that for 64bit, and the array is used for all vectors that
are not managed by vector_irq per_cpu array.
Also kill system_vectors[], that is now a duplication of the
used_vectors bitmap.
[ merged in cpus4096 due to io_apic.c cpumask changes. ]
[ -v2, fix build failure ]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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this warning:
arch/x86/kernel/io_apic.c: In function ‘ir_set_msi_irq_affinity’:
arch/x86/kernel/io_apic.c:3373: warning: ‘cfg’ may be used uninitialized in this function
triggers because the variable was truly uninitialized. We'd crash on
entering this code.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: add new boot parameter
Use possible_cpus=NUM kernel parameter to extend the number of possible
cpus.
The ability to HOTPLUG ON cpus that are "possible" but not "present" is
dealt with in a later patch.
Signed-off-by: Mike Travis <travis@sgi.com>
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Impact: fix potential APIC crash
In determining the destination apicid, there are usually three cpumasks
that are considered: the incoming cpumask arg, cfg->domain and the
cpu_online_mask. Since we are just introducing the cpu_mask_to_apicid_and
function, make sure it includes the cpu_online_mask in it's evaluation.
[Added with this patch.]
There are two io_apic.c functions that did not previously use the
cpu_online_mask: setup_IO_APIC_irq and msi_compose_msg. Both of these
simply used cpu_mask_to_apicid(cfg->domain & TARGET_CPUS), and all but
one arch (NUMAQ[*]) returns only online cpus in the TARGET_CPUS mask,
so the behavior is identical for all cases.
[*: NUMAQ bug?]
Note that alloc_cpumask_var is only used for the 32-bit cases where
it's highly likely that the cpumask set size will be small and therefore
CPUMASK_OFFSTACK=n. But if that's not the case, failing the allocate
will cause the same return value as the default.
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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This done for conflict prevention: we merge it into the cpus4096 tree
because upcoming cpumask changes will touch apic.c that would collide
with x86/apic otherwise.
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Impact: build fix
The sparseirq tree crossed with the cpumask changes, fix the fallout.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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