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0e38225c |
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22-Dec-2020 |
Nick Desaulniers <ndesaulniers@google.com> |
sh: check return code of request_irq request_irq is marked __must_check, but the call in shx3_prepare_cpus has a void return type, so it can't propagate failure to the caller. Follow cues from hexagon and just print an error. Fixes: c7936b9abcf5 ("sh: smp: Hook in to the generic IPI handler for SH-X3 SMP.") Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> Cc: Paul Mundt <lethal@linux-sh.org> Reported-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Reviewed-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Rich Felker <dalias@libc.org>
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add5ca2c |
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28-Dec-2018 |
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
sh: sh4a: convert to SPDX identifiers Update license to use SPDX-License-Identifier instead of verbose license text. Link: http://lkml.kernel.org/r/878t14csxy.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Cc: Rich Felker <dalias@libc.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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51533233 |
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06-Sep-2016 |
Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
sh/SH-X3 SMP: Convert to hotplug state machine Install the callbacks via the state machine. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-sh@vger.kernel.org Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160906170457.32393-6-bigeasy@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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ef21b32a |
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27-Mar-2016 |
Rich Felker <dalias@libc.org> |
sh: fix smp-shx3 build regression from removal of arch localtimer The removal was not complete and left behind one reference to a removed function in smp-shx3.c. For completeness, also remove declarations for functions that were removed. Fixes: 45624ac38926 "sh: remove arch-specific localtimer and use generic one" Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Rich Felker <dalias@libc.org>
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4603f53a |
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18-Jun-2013 |
Paul Gortmaker <paul.gortmaker@windriver.com> |
sh: delete __cpuinit usage from all sh files The __cpuinit type of throwaway sections might have made sense some time ago when RAM was more constrained, but now the savings do not offset the cost and complications. For example, the fix in commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time") is a good example of the nasty type of bugs that can be created with improper use of the various __init prefixes. After a discussion on LKML[1] it was decided that cpuinit should go the way of devinit and be phased out. Once all the users are gone, we can then finally remove the macros themselves from linux/init.h. Note that some harmless section mismatch warnings may result, since notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c) are flagged as __cpuinit -- so if we remove the __cpuinit from arch specific callers, we will also get section mismatch warnings. As an intermediate step, we intend to turn the linux/init.h cpuinit content into no-ops as early as possible, since that will get rid of these warnings. In any case, they are temporary and harmless. This removes all the arch/sh uses of the __cpuinit macros from all C files. Currently sh does not have any __CPUINIT used in assembly files. [1] https://lkml.org/lkml/2013/5/20/589 Cc: Paul Mundt <lethal@linux-sh.org> Cc: linux-sh@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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d11584a0 |
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22-Oct-2011 |
Yong Zhang <yong.zhang0@gmail.com> |
SH: irq: Remove IRQF_DISABLED Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled], We run all interrupt handlers with interrupts disabled and we even check and yell when an interrupt handler returns with interrupts enabled (see commit [b738a50a: genirq: Warn when handler enables interrupts]). So now this flag is a NOOP and can be removed. Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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e7dc951e |
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26-Apr-2010 |
Paul Mundt <lethal@linux-sh.org> |
sh: CPU hotplug support for SH-X3 SMP. This wires up CPU hotplug for SH-X3 SMP CPUs. Presently only secondary cores can be hotplugged given that the boot CPU has to contend with the broadcast timer. When real local timers are implemented this restriction can be lifted. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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7acb59eb |
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26-Apr-2010 |
Paul Mundt <lethal@linux-sh.org> |
sh: Make sure all SH-X3 cores are populated in the present CPU map. This iterates over the maximum number of CPUs we plan to support and makes sure they're all set in the present CPU map. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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3366e358 |
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29-Mar-2010 |
Paul Mundt <lethal@linux-sh.org> |
sh: Move platform smp ops in to their own structure. This cribs the MIPS plat_smp_ops approach for wrapping up the platform ops. This will allow for mixing and matching different ops on the same platform in the future. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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fecf066c |
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14-Apr-2010 |
Paul Mundt <lethal@linux-sh.org> |
sh: Disable IRQ balancing for timer and IPI IRQs. Make sure that the timer IRQs and IPIs aren't enabled for IRQ balancing. IPIs are disabled as a result of being percpu while the timers simply disable balancing outright. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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f0cb7737 |
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14-Jan-2010 |
Paul Mundt <lethal@linux-sh.org> |
sh: Fix up the secondary CPU entry point for 32bit mode. Presently the secondary CPU entry point is only aimed at 29bit phys mode, causing it to point to a stray virtual address in 32bit mode. Fix it up after consulting with our shiny new __in_29bit_mode(). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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94eab0bb |
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16-Oct-2009 |
Paul Mundt <lethal@linux-sh.org> |
sh: Force boot CPU in to light sleep mode for SH-X3 SMP. All of the secondary CPUs are forced in to light sleep mode, but we were missing the same initialization for the boot CPU. This resulted in inconsistent sleep modes depending on which CPU we were on, confusing the idle loop when not polling. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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fc6191dd |
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19-Aug-2009 |
Paul Mundt <lethal@linux-sh.org> |
sh: Fix up clockevents broadcasting. This fixes up the clockevents broadcasting code as detailed in commit ee348d5a1d810bc9958cabb7c27302aab235d36e ("[ARM] realview: fix broadcast tick support"). This saves us from having to do strange ordering things with the broadcast clockevent device, relying on the rating instead. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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e09377ba |
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12-Jun-2009 |
Rusty Russell <rusty@rustcorp.com.au> |
cpumask: Use accessors for cpu_*_mask: sh Use the accessors rather than frobbing bits directly (the new versions are const). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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71f0bdca |
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06-Aug-2008 |
Paul Mundt <lethal@linux-sh.org> |
sh: smp: shove a cpu_relax() in the plat_start_cpu() busy loop. Without this, certain versions of GCC will happily optimize the entire loop out. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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c7936b9a |
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06-Aug-2008 |
Paul Mundt <lethal@linux-sh.org> |
sh: smp: Hook in to the generic IPI handler for SH-X3 SMP. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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1a442fe0 |
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21-Sep-2007 |
Paul Mundt <lethal@linux-sh.org> |
sh: Initial SH-X3 SMP support. This adds basic support for SH-X3 SMP (4 CPUs). More IPI and cache debugging is necessary, mostly interfacing the d-cache coherency and the I-cache broadcast invalidates. Only for testing at present! Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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