| b64f7cc09ea139549e6007b84de1f2458714774e |
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19-Oct-2011 |
Dima Zavin <dima@android.com> |
ARM: smp: implement arch_trigger_all_cpus_backtrace using IPI
Based on a rough patch by frank.rowand@am.sony.com
Since ARM doesn't have an NMI (fiq's are not always available),
send an IPI to all other CPUs (current cpu prints the stack directly)
to capture a backtrace.
Change-Id: I8b163c8cec05d521b433ae133795865e8a33d4e2
Signed-off-by: Dima Zavin <dima@android.com>
/arch/arm/include/asm/smp.h
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| eb50439b92b6298bf209a982f295ba9c0f7cb30b |
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20-Jan-2012 |
Will Deacon <will.deacon@arm.com> |
ARM: 7293/1: logical_cpu_map: decouple CPU mapping from SMP
It turns out that the logical CPU mapping is useful even when !CONFIG_SMP
for manipulation of devices like interrupt and power controllers when
running a UP kernel on a CPU other than 0. This can happen when kexecing
a UP image from an SMP kernel.
In the future, multi-cluster systems running AMP configurations will
require something similar for mapping cluster IDs, so it makes sense to
decouple this logic in preparation for this support.
Acked-by: Yang Bai <hamo.by@gmail.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Reported-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
/arch/arm/include/asm/smp.h
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| 292b293ceef2eda1f96f0c90b96e954d7bdabd1c |
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20-Jul-2011 |
Marc Zyngier <marc.zyngier@arm.com> |
ARM: gic: consolidate PPI handling
PPI handling is a bit of an odd beast. It uses its own low level
handling code and is hardwired to the local timers (hence lacking
a registration interface).
Instead, switch the low handling to the normal SPI handling code.
PPIs are handled by the handle_percpu_devid_irq flow.
This also allows the removal of some duplicated code.
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: David Brown <davidb@codeaurora.org>
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: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Brown <davidb@codeaurora.org>
Tested-by: David Brown <davidb@codeaurora.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
/arch/arm/include/asm/smp.h
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| 0b5a1b95dcdfa451125132d5ce3f79a27ffb0950 |
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06-Oct-2011 |
Shawn Guo <shawn.guo@linaro.org> |
ARM: 7123/1: smp: Add an IPI handler callable from C code
In order to be able to handle IPI directly from C code instead of
assembly code, introduce handle_IPI(), which is modeled after handle_IRQ().
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
/arch/arm/include/asm/smp.h
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| d6257288c4052465feeff7e283e35ec0ed06ca03 |
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23-Aug-2011 |
Will Deacon <will.deacon@arm.com> |
ARM: 7060/1: smp: populate logical CPU mapping during boot
To allow booting Linux on a CPU with physical ID != 0, we need to
provide a mapping from the logical CPU number to the physical CPU
number.
This patch adds such a mapping and populates it during boot.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
/arch/arm/include/asm/smp.h
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| d427958a46af24f75d0017c45eadd172273bbf33 |
|
26-May-2011 |
Catalin Marinas <catalin.marinas@arm.com> |
ARM: 6942/1: mm: make TTBR1 always point to swapper_pg_dir on ARMv6/7
This patch makes TTBR1 point to swapper_pg_dir so that global, kernel
mappings can be used exclusively on v6 and v7 cores where they are
needed.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
/arch/arm/include/asm/smp.h
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| 818b667ba57f68bf1e7240fa441dda0b11e6b944 |
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25-May-2011 |
Stephen Boyd <sboyd@codeaurora.org> |
Remove unused PROC_CHANGE_PENALTY constant
This constant hasn't been used since before the git era (2.6.12) and thus
can be dropped.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Richard Weinberger <richard@nod.at>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
/arch/arm/include/asm/smp.h
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| 0f7b332f9777819a39a3b325690379a7efef89d1 |
|
03-Apr-2011 |
Russell King <rmk+kernel@arm.linux.org.uk> |
ARM: consolidate SMP cross call implementation
Rather than having each platform class provide a mach/smp.h header for
smp_cross_call(), arrange for them to register the function with the
core ARM SMP code instead.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
/arch/arm/include/asm/smp.h
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| 05c74a6cbcfb416286a947668ba32f63d99fe74a |
|
03-Dec-2010 |
Russell King <rmk+kernel@arm.linux.org.uk> |
ARM: SMP: consolidate the common parts of smp_prepare_cpus()
There is a certain amount of smp_prepare_cpus() which doesn't belong
in the platform support code - that is, code which is invariant to the
SMP implementation. Move this code into arch/arm/kernel/smp.c, and
add a platform_ prefix to the original function.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
/arch/arm/include/asm/smp.h
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| f13cd4170ee789f63b3c9585c1ae34e028bd549d |
|
15-Nov-2010 |
Russell King <rmk+kernel@arm.linux.org.uk> |
ARM: fix /proc/interrupts formatting
As per x86, align the initial column according to how many IRQs we
have. Also, provide an english explaination for the 'LOC:' and
'IPI:' lines.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
/arch/arm/include/asm/smp.h
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| ad3b6993b9c5482e8a2ec5aed181538c921fdcbd |
|
15-Nov-2010 |
Russell King <rmk+kernel@arm.linux.org.uk> |
ARM: SMP: pass an ipi number to smp_cross_call()
This allows us to use smp_cross_call() to trigger a number of different
software generated interrupts, rather than combining them all on one
SGI. Recover the SGI number via do_IPI.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
/arch/arm/include/asm/smp.h
|
| 8e2a43f5f5e1255879064924917fb1a6e5be7cb3 |
|
15-May-2010 |
Russell King <rmk+kernel@arm.linux.org.uk> |
ARM: rename mach_cpu_disable() to platform_cpu_disable()
Consistently name all SMP platform related functions.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
/arch/arm/include/asm/smp.h
|
| 0748bd01773395003208996c4c0b3f80caf80976 |
|
24-Sep-2009 |
Rusty Russell <rusty@rustcorp.com.au> |
cpumask: remove arch_send_call_function_ipi
Now everyone is converted to arch_send_call_function_ipi_mask, remove
the shim and the #defines.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
/arch/arm/include/asm/smp.h
|
| e03cdade0ca945a04e982525e50fef275190b77b |
|
28-May-2009 |
Russell King <rmk@dyn-67.arm.linux.org.uk> |
[ARM] smp: use new cpumask functions
Convert cpu_*_mask bit twiddling to the new set_cpu_*() API.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
/arch/arm/include/asm/smp.h
|
| bc28248ee25e5c239cbe6afca35a100b08401de5 |
|
17-May-2009 |
Russell King <rmk@dyn-67.arm.linux.org.uk> |
[ARM] smp: move core localtimer support out of platform specific files
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
/arch/arm/include/asm/smp.h
|
| 826681043d7184b4d650cab5b007b9a86b628eb5 |
|
17-May-2009 |
Russell King <rmk@dyn-67.arm.linux.org.uk> |
[ARM] smp: fix cpumask usage in ARM SMP code
The ARM SMP code wasn't properly updated for the cpumask changes, which
results in smp_timer_broadcast() broadcasting ticks to non-online CPUs.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
/arch/arm/include/asm/smp.h
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| ebac6546df7e8bd17f66f029c616ea9ee3c595ae |
|
01-Dec-2008 |
Catalin Marinas <catalin.marinas@arm.com> |
RealView: Use only the shadow mapping of ARM11MPCore local timers
All the cases where the local timer for a CPU is accessed happen on the
corresponding current CPU, hence no need to access the per-CPU local
timer mappings.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
/arch/arm/include/asm/smp.h
|
| a09e64fbc0094e3073dbb09c3b4bfe4ab669244b |
|
05-Aug-2008 |
Russell King <rmk@dyn-67.arm.linux.org.uk> |
[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach
This just leaves include/asm-arm/plat-* to deal with.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
/arch/arm/include/asm/smp.h
|
| 4baa9922430662431231ac637adedddbb0cfb2d7 |
|
02-Aug-2008 |
Russell King <rmk@dyn-67.arm.linux.org.uk> |
[ARM] move include/asm-arm to arch/arm/include/asm
Move platform independent header files to arch/arm/include/asm, leaving
those in asm/arch* and asm/plat* alone.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
/arch/arm/include/asm/smp.h
|