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2008-02-13xtime_lock vs update_process_timesPeter Zijlstra
Commit d3d74453c34f8fd87674a8cf5b8a327c68f22e99 ("hrtimer: fixup the HRTIMER_CB_IRQSAFE_NO_SOFTIRQ fallback") broke several archs, and since only Russell bothered to merge the fix, and Greg to ACK his arch, I'm sending this for merger. I have confirmation that the Alpha bit results in a booting kernel. That leaves: blackfin, frv, sh and sparc untested. The deadlock in question was found by Russell: IRQ handle -> timer_tick() - xtime seqlock held for write -> update_process_times() -> run_local_timers() -> hrtimer_run_queues() -> hrtimer_get_softirq_time() - tries to get a read lock Now, Thomas assures me the fix is trivial, only do_timer() needs to be done under the xtime_lock, and update_process_times() can savely be removed from under it. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Greg Ungerer <gerg@uclinux.org> CC: Richard Henderson <rth@twiddle.net> CC: Bryan Wu <bryan.wu@analog.com> CC: David Howells <dhowells@redhat.com> CC: Paul Mundt <lethal@linux-sh.org> CC: William Irwin <wli@holomorphy.com> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08Fix container_of() usageAlexey Dobriyan
Using "attr" twice is not OK, because it effectively prohibits such container_of() on variables not named "attr". Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-07Use BOOTMEM_EXCLUSIVE for kdumpBernhard Walle
Use the BOOTMEM_EXCLUSIVE, introduced in the previous patch, to avoid conflicts while reserving the memory for the kdump capture kernel (crashkernel=). Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: <linux-arch@vger.kernel.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-07Introduce flags for reserve_bootmem()Bernhard Walle
This patchset adds a flags variable to reserve_bootmem() and uses the BOOTMEM_EXCLUSIVE flag in crashkernel reservation code to detect collisions between crashkernel area and already used memory. This patch: Change the reserve_bootmem() function to accept a new flag BOOTMEM_EXCLUSIVE. If that flag is set, the function returns with -EBUSY if the memory already has been reserved in the past. This is to avoid conflicts. Because that code runs before SMP initialisation, there's no race condition inside reserve_bootmem_core(). [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: fix powerpc build] Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: <linux-arch@vger.kernel.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05timerfd: fix remaining architecturesAndrew Morton
Cc: David Howells <dhowells@redhat.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: Davide Libenzi <davidel@xmailserver.org> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-28all archs: consolidate init and exit sections in vmlinux.lds.hSam Ravnborg
This patch consolidate all definitions of .init.text, .init.data and .exit.text, .exit.data section definitions in the generic vmlinux.lds.h. This is a preparational patch - alone it does not buy us much good. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28sh: constify function pointer tablesJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Add OHCI and UDC platform devices for SH7720.Yoshihiro Shimoda
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: intc - remove default interrupt priority tablesMagnus Damm
This patch removes interrupt priority tables from the intc code. Optimal priority assignment varies with embedded application anyway, so keeping the interrupt priority tables together with cpu-specific code doesn't make sense. The function intc_set_priority() should be used instead to set the desired interrupt priority level. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: sh7712 clock supportAndrew Murray
This patch provides specific clock support for the SH7712. Signed-off-by: Andrew Murray <amurray@mpc-data.co.uk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Add support for SH7763 CPU subtype.Yoshihiro Shimoda
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Add support for SH7721 CPU subtype.Yoshihiro Shimoda
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Encode L1/L2 cache shape in auxvt.Paul Mundt
This adds in the L1I/L1D/L2 cache shape support to their respective entries in the ELF auxvt, based on the Alpha implementation. We use this on the userspace libc side for calculating a tightly packed SHMLBA amongst other things. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Support denormalization on SH-4 FPU.Stuart Menefy
Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Clean up places that make 29-bit physical assumptions.Stuart Menefy
Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Preparation for uncached jumps through PMB.Stuart Menefy
Presently most of the 29-bit physical parts do P1/P2 segmentation with a 1:1 cached/uncached mapping, jumping between the two to control the caching behaviour. This provides the basic infrastructure to maintain this behaviour on 32-bit physical parts that don't map P1/P2 at all, using a shiny new linker section and corresponding fixmap entry. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: GUSA atomic rollback support.Stuart Menefy
This implements kernel-level atomic rollback built on top of gUSA, as an alternative non-IRQ based atomicity method. This is generally a faster method for platforms that are lacking the LL/SC pairs that SH-4A and later use, and is only supportable on legacy cores. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: comment tidying for sh64->sh migration.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: syscall auditing for sh5, too.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Provide a 29/32-bit physical hint for bootloaders.Stuart Menefy
Shoves a magic word in to the empty_zero_page section for the bootloader to work out whether to start the kernel in 29-bit or 32-bit mode. [ Renesas CPUs already take care of the initial PMB mappings entirely in hardware and decide on 29-bit/32-bit physical depending on which pin powered up the CPU, so this is mostly for ST parts. -- PFM ]. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Add a printk() to warn legacy mem= growers.Stuart Menefy
mem= can't be used to grow the size of kernel memory, so provide a warning to that effect. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: SH-2A FPU support.Paul Mundt
Signed-off-by: Kieran Bingham <kbingham@mpc-data.co.uk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Add SH7263 CPU support.Paul Mundt
This adds support for the SH7263 (SH-2A) CPU. This particular CPU is a superset of SH7203, adding some additional peripheral blocks and hooking up additional (reserved on SH7203) vectors in the INTC block. No visibly nasty surprises, yet.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Fix the arch/sh/kernel/traps.c build for sh32.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Add SH7203 CPU support.Paul Mundt
This adds support for the SH7203 (SH-2A) CPU. Signed-off-by: Kieran Bingham <kbingham@mpc-data.co.uk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: syscall audit support.Yuichi Nakamura
Support syscall auditing.. Signed-off-by: Yuichi Nakamura <ynakam@hitachisoft.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Move mach-cayman in with the rest of the boards.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Kill off the mach-harp and mach-sim machtypes.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Bring the SH-5 FPU in line with the SH-4 FPU API.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Kill off the rest of arch/sh64/kernel/.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Get the mach-cayman IRQ support building.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Fix up proc ASIDs for CPU-local ASID cache accessors.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Use existing CONFIG_CACHE_xx options in head_64.S.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Switch SH-5 to use CONFIG_PAGE_OFFSET.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Stub in CPU subtype setup code for SH5-101/103.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Add the SH-5 cpu type symbolic names.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Plug in simple SH-5 subtype probing.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Kill off do_NMI stub in SH-5 ex table.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Move quad-word real-address I/O defs to io.h.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Share bug/debug traps across _32 and _64.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: sys_sh consolidation for arch_get_unmapped_area().Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Share the ELF dump_task interfaces.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Kill off SH-5 enter_deep_standby() cruft.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Sync up the _64 linker script with the _32 version.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Merge sh and sh64 module.c.Paul Mundt
This is trivial, in that they're both effectively the same for the base relocations anyways. SH-5 doesn't need the unaligned bits, and has a few extra relocations, which are never hit on non-SH5 parts. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Move over and enable FPU support for SH-5.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Common swapper_pg_dir usage for SH-5.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Provide dummy swapper pt_regs for SH-5 ctx switch.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Move over sh64 switch_to and stack unwinder.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Split out sh_ksyms.c in to _32 and _64 variants.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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