- Aug 02, 2005
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Benjamin Herrenschmidt authored
The code that sets the altivec capability of the CPU based on firmware informations can enable altivec when the kernel has CONFIG_ALTIVEC disabled. This results in "interesting" crashes. Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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- Jul 30, 2005
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Robert Love authored
inotify system call support for PPC64 [ I don't think we need sys32 compatibility versions--and if we do, I failed in life. ] Signed-off-by:
Robert Love <rml@novell.com> Acked-by:
Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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- Jul 27, 2005
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Olaf Hering authored
turn many #if $undefined_string into #ifdef $undefined_string to fix some warnings after -Wno-def was added to global CFLAGS Signed-off-by:
Olaf Hering <olh@suse.de> Signed-off-by:
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David Gibson authored
Presently the LparMap, one of the structures the kernel shares with the legacy iSeries hypervisor has a fixed offset address in head.S. This patch changes this so the LparMap is a normally initialized structure, without fixed address. This allows us to use macros to compute some of the values in the structure, which wasn't previously possible because the assembler always uses signed-% which gets the wrong answers for the computations in question. Unfortunately, a gcc bug means that doing this requires another structure (hvReleaseData) to be initialized in asm instead of C, but on the whole the result is cleaner than before. Signed-off-by:
David Gibson <dwg@au1.ibm.com> Signed-off-by:
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David Gibson authored
PPC64 machines before Power4 need a segment table page allocated for each CPU. Currently these are allocated statically in a big array in head.S for all CPUs. The segment tables need to be in the first segment (so do_stab_bolted doesn't take a recursive fault on the stab itself), but other than that there are no constraints which require the stabs for the secondary CPUs to be statically allocated. This patch allocates segment tables dynamically during boot, using lmb_alloc() to ensure they are within the first 256M segment. This reduces the kernel image size by 192k... Tested on RS64 iSeries, POWER3 pSeries, and POWER5. Signed-off-by:
David Gibson <david@gibson.dropbear.id.au> Signed-off-by:
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Olaf Hering authored
Making a few functions static saves a few bytes, but only on ppc32. text data bss dec hex filename 3752421 1605208 345608 5703237 570645 ../O-ppc64_iSeries_defconfig/vmlinux 3709411 2042552 339992 6091955 5cf4b3 ../O-ppc64_maple_defconfig/vmlinux 5397329 3054824 679856 9132009 8b57e9 ../O-ppc64_pSeries_defconfig/vmlinux -3882695 417552 197760 4498007 44a257 ../O-ppc_common_defconfig/vmlinux -3414510 574500 241440 4230450 408d32 ../O-ppc_pmac_defconfig/vmlinux +3882627 417168 197760 4497555 44a093 ../O-ppc_common_defconfig/vmlinux +3414442 575428 241440 4231310 40908e ../O-ppc_pmac_defconfig/vmlinux Signed-off-by:
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- Jul 26, 2005
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Eric W. Biederman authored
machine_restart, machine_halt and machine_power_off are machine specific hooks deep into the reboot logic, that modules have no business messing with. Usually code should be calling kernel_restart, kernel_halt, kernel_power_off, or emergency_restart. So don't export machine_restart, machine_halt, and machine_power_off so we can catch buggy users. Signed-off-by:
Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
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- Jul 13, 2005
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Olof Johansson authored
Add PVR value and tests for 970MP. Also switch to a simpler (but slightly longer) check at init time for simplicity. Signed-off-by:
Olof Johansson <olof@austin.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by:
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David Gibson authored
This patch removes the use of bitfield types from the ppc64 hash table manipulation code. Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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- Jul 08, 2005
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Anton Blanchard authored
We dont need to use the PERFMON exception on POWER5, in fact the firmware returns an error. Due to this just remove the warning. Also now that we have proper runlatch support we can remove the bootup hack. Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
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Michael Ellerman authored
Not sure if we really need this, but it was handy to know which iSeries loop I was testing. Be consistent about printing which idle loop we're using, with this patch we cover all cases. Signed-off-by:
Michael Ellerman <michael@ellerman.id.au> Signed-off-by:
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Anton Blanchard authored
Fix a compile warning introduced by the previous patches. Signed-off-by:
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Anton Blanchard authored
- remove some unnecessary includes - add runlatch support - no need to use raw_smp_processor_id any more, current preempt debug logic checks for processes that are bound to one cpu. Signed-off-by:
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Anton Blanchard authored
- separate out sleep logic in dedicated_idle, it was so far indented that it got squashed against the right side of the screen. - add runlatch support, looping on runlatch disable. Signed-off-by:
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Anton Blanchard authored
- remove min/max yield time, we dont use the values anywhere - separate shared and dedicated idle loops - check need_resched again with irqs off to avoid sleeping with pending work - continually set runlatch off in idle loop, this means we dont need to turn the runlatch off on exception exit and suffer that associated cost for all exceptions. (A future patch will turn the runlatch on at exception entry) Signed-off-by:
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Michael Ellerman authored
Now that the idle loop is configured by each platform we don't need idle_setup() anymore. Signed-off-by:
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Michael Ellerman authored
This patch fixes up iSeries, pSeries, pmac and maple to set the correct idle function for each platform. Signed-off-by:
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Michael Ellerman authored
dedicated_idle() and shared_idle() are only used by pSeries, so move them into pSeries_setup.c Signed-off-by:
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Michael Ellerman authored
Move iSeries_idle() into iSeries_setup.c, no one else needs to know about it. Signed-off-by:
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Michael Ellerman authored
This patch adds an idle member to the ppc_md structure and calls it from cpu_idle(). If a platform leaves ppc_md.idle as null it will get the default idle loop default_idle(). Signed-off-by:
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Milton Miller authored
Separate the NUL character filtering from get_hvc_chars. Signed-off-by:
Milton Miller <miltonm@bga.com> Signed-off-by:
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Milton Miller authored
Remove all the vio device driver code from hvc_console.c This will allow us to separate hvsi, hvc, and allow hvc_console to be used without the ppc64 vio layer. Signed-off-by:
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Milton Miller authored
Separate the console setup routines of the hvc_console and the vio layer. Remove the call to find_init_vty from hvc_console.c. Fail the setup routine if the console doesn't exist, but register the console again when the specified channel is instantiated. This scheme maintains the print buffer semantics while eliminating callout and call back for the console code. Signed-off-by:
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Anton Blanchard authored
- Clean up sys32_getpriority comment. - Add ioprio syscalls, and sign extend 32bit versions. Signed-off-by:
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Anton Blanchard authored
Remove some unnecessary includes, an out of date comment and a prototype for sys_timer_create (which is now in syscalls.h) Signed-off-by:
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Anton Blanchard authored
Enable the runlatch at the start of each exception. Unfortunately we are out of space in the 0x300 handler, so I added it a bit later. The SPR write is fairly expensive, perhaps we should cache the runlatch state in the paca and avoid the write when possible. We don't need to turn the runlatch off, we do that in the idle loop. Better to take the hit in the idle loop than for each exception exit. Signed-off-by:
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Anton Blanchard authored
Not all ppc64 CPUs have the CTRL SPR, so we need a cputable feature for it. Signed-off-by:
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Anton Blanchard authored
Use c99 initialisers in the cputable code. Signed-off-by:
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Olaf Hering authored
Patch from <amodra@bigpond.net.au>, http://sources.redhat.com/bugzilla/show_bug.cgi?id=1042 /usr/bin/ld: arch/ppc64/kernel/vdso32/vdso32.so: The first section in the PT_DYNAMIC segment is not the .dynamic section Signed-off-by:
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- Jul 06, 2005
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Jeff Mahoney authored
This converts the usage of struct of_match to struct of_device_id, similar to pci_device_id. This allows a device table to be generated, which can be parsed by depmod(8) to generate a map file for module loading. In order for hotplug to work with macio devices, patches to module-init-tools and hotplug must be applied. Those patches are available at: ftp://ftp.suse.com/pub/people/jeffm/linux/macio-hotplug/ Signed-off-by:
Jeff Mahoney <jeffm@suse.com> Signed-off-by:
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Rusty Lynch authored
The following renames arch_init, a kprobes function for performing any architecture specific initialization, to arch_init_kprobes in order to cleanup the namespace. Also, this patch adds arch_init_kprobes to sparc64 to fix the sparc64 kprobes build from the last return probe patch. Signed-off-by:
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- Jun 30, 2005
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Michael Ellerman authored
The hvlpevent_queue (formally ItLpQueue) has a member called xInUseWord which is used for serialising access to the queue. Because it's a word (ie. 32 bit) there's a custom 32-bit version of test_and_set_bit() or thereabouts in ItLpQueue.c. The xInUseWord is not shared with they hypervisor, so we can replace it with a spinlock and remove the custom code. There is also another locking mechanism (ItLpQueueInProcess). This is redundant because it's only manipulated while the lock's held. Remove it. Signed-off-by:
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Michael Ellerman authored
Just formatting cleanups: * rename some "nextLpEvent" variables to just "event" * make code fit in 80 columns * use brackets around if/else * use a temporary to make hvlpevent_clear_valid clearer Signed-off-by:
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Michael Ellerman authored
Just cleanup white space. Signed-off-by:
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Michael Ellerman authored
The code that prints event counts by type uses a hand-coded number of tabs to get the alignment right. Instead use a printf alignment which will allow allow us to use the event_type strings elsewhere in the future. Signed-off-by:
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Michael Ellerman authored
Currently there's a per-cpu count of lpevents processed, a per-queue (ie. global) total count, and a count by event type. Replace all that with a count by event for each cpu. We only need to add it up int the proc code. Signed-off-by:
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Michael Ellerman authored
Currently we count the number of lpevents processed in 3 seperate places. One of these counters is never read, so just remove it. This means hvlpevent_queue_process() no longer needs to return the number of events processed. Signed-off-by:
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Michael Ellerman authored
Now that we've renamed the xItLpQueue structure, rename the functions that operate on it also. Signed-off-by:
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Michael Ellerman authored
The xItLpQueue is a queue of HvLpEvents that we're given by the Hypervisor. Rename xItLpQueue to hvlpevent_queue and make the type struct hvlpevent_queue. Signed-off-by:
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Michael Ellerman authored
The xItLpQueue is declared in LparData.c, move it into ItLpQueue.c. Signed-off-by:
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