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* [SPARC]: Fix robust futex syscalls and wire up migrate_pages.David S. Miller2006-11-05
| | | | | | | | | | | | | When I added the entries for the robust futex syscall entries, I forgot to bump NR_SYSCALLS. The current situation is error-prone because NR_SYSCALLS lives in entry.S where the system call limit checks are enforced. Move the definition to asm/unistd.h in order to make this mistake much more difficult to make. And wire up sys_migrate_pages since the powerpc folks implemented the compat wrapper for us. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix futex_atomic_cmpxchg_inatomic implementation.David S. Miller2006-11-01
| | | | | | | | | | I copied the logic from ll/sc arch implementations, but that was wrong and makes no sense at all. Just do a straight compare-exchange instruction, just like x86. Based upon bug reports from Dennis Gilmore and Fabio Massimo. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: 8-byte align return value from compat_alloc_user_space()David S. Miller2006-10-23
| | | | | | | | | | | | | Otherwise we get a ton of unaligned exceptions, for cases such as compat_sys_msgrcv() which go: p = compat_alloc_user_space(second + sizeof(struct msgbuf)); and here 'second' can for example be an arbitrary odd value. Based upon a bug report from Jurij Smakov. Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] Consolidate check_signatureMatthew Wilcox2006-10-11
| | | | | | | | | | | There's nothing arch-specific about check_signature(), so move it to <linux/io.h>. Use a cross between the Alpha and i386 implementations as the generic one. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sparc64 pt_regs fixesAl Viro2006-10-08
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Remove all inclusions of <linux/config.h>Dave Jones2006-10-04
| | | | | | kbuild explicitly includes this at build time. Signed-off-by: Dave Jones <davej@redhat.com>
* [SPARC64]: Do not include compat.h from asm-sparc64/signal.h any more.David S. Miller2006-10-02
| | | | | | | It's not needed, now that all of that stuff is now in asm/compat_signal.h, and it breaks the build too :-) Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Move signal compat bits to new header file.David S. Miller2006-10-02
| | | | | | | | | | Create asm-sparc64/compat_signal.h and stuff things there. This avoids the "linux/compat.h includes asm/signal.h but asm/signal.h needs compat_sigset_t which isn't defined yet" problems introduced recently. Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] remove remaining errno and __KERNEL_SYSCALLS__ referencesArnd Bergmann2006-10-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The last in-kernel user of errno is gone, so we should remove the definition and everything referring to it. This also removes the now-unused lib/execve.c file that was introduced earlier. Also remove every trace of __KERNEL_SYSCALLS__ that still remained in the kernel. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Andi Kleen <ak@muc.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Hirokazu Takata <takata.hirokazu@renesas.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Chris Zankel <chris@zankel.net> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locksMartin Schwidefsky2006-10-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | On systems running with virtual cpus there is optimization potential in regard to spinlocks and rw-locks. If the virtual cpu that has taken a lock is known to a cpu that wants to acquire the same lock it is beneficial to yield the timeslice of the virtual cpu in favour of the cpu that has the lock (directed yield). With CONFIG_PREEMPT="n" this can be implemented by the architecture without common code changes. Powerpc already does this. With CONFIG_PREEMPT="y" the lock loops are coded with _raw_spin_trylock, _raw_read_trylock and _raw_write_trylock in kernel/spinlock.c. If the lock could not be taken cpu_relax is called. A directed yield is not possible because cpu_relax doesn't know anything about the lock. To be able to yield the lock in favour of the current lock holder variants of cpu_relax for spinlocks and rw-locks are needed. The new _raw_spin_relax, _raw_read_relax and _raw_write_relax primitives differ from cpu_relax insofar that they have an argument: a pointer to the lock structure. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Standardize pxx_page macrosDave McCracken2006-09-26
| | | | | | | | | | | | | | | | | | | | | One of the changes necessary for shared page tables is to standardize the pxx_page macros. pte_page and pmd_page have always returned the struct page associated with their entry, while pte_page_kernel and pmd_page_kernel have returned the kernel virtual address. pud_page and pgd_page, on the other hand, return the kernel virtual address. Shared page tables needs pud_page and pgd_page to return the actual page structures. There are very few actual users of these functions, so it is simple to standardize their usage. Since this is basic cleanup, I am submitting these changes as a standalone patch. Per Hugh Dickins' comments about it, I am also changing the pxx_page_kernel macros to pxx_page_vaddr to clarify their meaning. Signed-off-by: Dave McCracken <dmccr@us.ibm.com> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [libata] No need for all those arch libata-portmap.h headersJeff Garzik2006-09-25
| | | | | | | They all contain the same thing. Instead, have a single generic one in include/asm-generic, and permit an arch to override as needed. Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Merge branch 'master' of ↵David Woodhouse2006-09-24
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
| * Merge branch 'master' into upstreamJeff Garzik2006-09-24
| |\
| * \ Merge branch 'master' into upstreamJeff Garzik2006-09-12
| |\ \
| * \ \ Merge /spare/repo/linux-2.6 into upstreamJeff Garzik2006-08-29
| |\ \ \
| * | | | [PATCH] libata: rework legacy handling to remove much of the cruftAlan Cox2006-08-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kill host_set->next Fix simplex support Allow per platform setting of IDE legacy bases Some of this can be tidied further later on, in particular all the legacy port gunge belongs as a PCI quirk/PCI header decode to understand the special legacy IDE rules in the PCI spec. Longer term Jeff also wants to move the request_irq/free_irq out of core which will make this even cleaner. tj: folded in three followup patches - ata_piix-fix, broken-arch-fix and fix-new-legacy-handling, and separated per-dev xfermask into separate patch preceding this one. Folded in fixes are... * ata_piix-fix: fix build failure due to host_set->next removal * broken-arch-fix: add missing include/asm-*/libata-portmap.h * fix-new-legacy-handling: * In ata_pci_init_legacy_port(), probe_num was incorrectly incremented during initialization of the secondary port and probe_ent->n_ports was incorrectly fixed to 1. * Both legacy ports ended up having the same hard_port_no. * When printing port information, both legacy ports printed the first irq. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Tejun Heo <htejun@gmail.com>
* | | | | Fix exported headers for SPARC, SPARC64David Woodhouse2006-09-21
| |_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | Mostly removing files which have no business being used in userspace. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | [HEADERS] One line per header in Kbuild files to reduce conflictsDavid Woodhouse2006-09-19
| |_|/ |/| | | | | | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* | | [PATCH] IA64,sparc: local DoS with corrupted ELFsKirill Korotaev2006-09-08
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This prevents cross-region mappings on IA64 and SPARC which could lead to system crash. They were correctly trapped for normal mmap() calls, but not for the kernel internal calls generated by executable loading. This code just moves the architecture-specific cross-region checks into an arch-specific "arch_mmap_check()" macro, and defines that for the architectures that needed it (ia64, sparc and sparc64). Architectures that don't have any special requirements can just ignore the new cross-region check, since the mmap() code will just notice on its own when the macro isn't defined. Signed-off-by: Pavel Emelianov <xemul@openvz.org> Signed-off-by: Kirill Korotaev <dev@openvz.org> Acked-by: David Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> [ Cleaned up to not affect architectures that don't need it ] Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [SPARC64]: Fix pfn_pte() build failure.David S. Miller2006-08-22
|/ | | | | | | | | | | | | The "%uhi" needs to be "%%uhi" because we want a real "%" character in the assembler here, instead of an assembler variable expansion. Aparently older GCCs were more liberal and interpreted this %-letter as a literal "%" for whatever reason. Based upon a build failure report from Meelis Roos. Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] IA64: kprobe invalidate icache of jump bufferbibo, mao2006-07-31
| | | | | | | | | | | | | | | | Kprobe inserts breakpoint instruction in probepoint and then jumps to instruction slot when breakpoint is hit, the instruction slot icache must be consistent with dcache. Here is the patch which invalidates instruction slot icache area. Without this patch, in some machines there will be fault when executing instruction slot where icache content is inconsistent with dcache. Signed-off-by: bibo,mao <bibo.mao@intel.com> Acked-by: "Luck, Tony" <tony.luck@intel.com> Acked-by: Keshavamurthy Anil S <anil.s.keshavamurthy@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SPARC64]: Fix typo in pgprot_noncached().David S. Miller2006-07-27
| | | | | | The sun4v code sequence was or'ing in the sun4u pte bits by mistake. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix quad-float multiply emulation.David S. Miller2006-07-27
| | | | | | | | | | Something is wrong with the 3-multiply (vs. 4-multiply) optimized version of _FP_MUL_MEAT_2_*(), so just use the slower version which actually computes correct values. Noticed by Rene Rebe Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC]: Kill prom_getname, unused and not implemented properly.David S. Miller2006-07-21
| | | | | | | The m68k port's sun3 asm/oplib.h had a stray reference too, so I killed that off as well. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix more of_device layer IRQ bugs, and correct PROMREG_MAX.David S. Miller2006-07-21
| | | | | | | | | | | | | | | | | | Sabre and Psycho PCI controllers can have partial interrupt-map properties, meaning that on-board devices don't match up to any entries. Instead, they are fully specified from the beginning and we should pass them directly to the IRQ translator as-is. Also, fill in the necessary translator slots for the "graphics" and "expansion UPA" interrupts on Sabre, Psycho, and SYSIO SBUS. Increase PROMREG_MAX to 24, as seen on SUNW,ffb devices. Finally, prevent accidentally writing past the end of the of_device struct resource[] and irqs[] arrays. Spit out a log message when we ignore some entries because there are too many of them. Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] remove set_wmb - arch removalSteven Rostedt2006-07-15
| | | | | | | | | | | | | | | | set_wmb should not be used in the kernel because it just confuses the code more and has no benefit. Since it is not currently used in the kernel this patch removes it so that new code does not include it. All archs define set_wmb(var, value) to do { var = value; wmb(); } while(0) except ia64 and sparc which use a mb() instead. But this is still moot since it is not used anyway. Hasn't been tested on any archs but x86 and x86_64 (and only compiled tested) Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SPARC64]: Fix make headers_installDavid Woodhouse2006-07-13
| | | | | | | | | | A minor typo in the include/asm-sparc64/Kbuild file prevents the make headers_install from building a useful tree of kernel headers for sparc64. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Tom "spot" Callaway <tcallawa@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix sparc64 build errors when CONFIG_PCI=n.Randy Dunlap2006-07-05
| | | | | Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.infradead.org/hdrinstall-2.6Linus Torvalds2006-07-04
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/hdrinstall-2.6: Remove export of include/linux/isdn/tpam.h Remove <linux/i2c-id.h> and <linux/i2c-algo-ite.h> from userspace export Restrict headers exported to userspace for SPARC and SPARC64 Add empty Kbuild files for 'make headers_install' in remaining arches. Add Kbuild file for Alpha 'make headers_install' Add Kbuild file for SPARC 'make headers_install' Add Kbuild file for IA64 'make headers_install' Add Kbuild file for S390 'make headers_install' Add Kbuild file for i386 'make headers_install' Add Kbuild file for x86_64 'make headers_install' Add Kbuild file for PowerPC 'make headers_install' Add generic Kbuild files for 'make headers_install' Basic implementation of 'make headers_check' Basic implementation of 'make headers_install'
| * Restrict headers exported to userspace for SPARC and SPARC64David S. Miller2006-06-20
| | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * Add Kbuild file for SPARC 'make headers_install'David Woodhouse2006-06-18
| | | | | | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* | [PATCH] lockdep: add per_cpu_offset()Ingo Molnar2006-07-03
| | | | | | | | | | | | | | | | | | | | Add the per_cpu_offset() generic method. (used by the lock validator) Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] irq-flags: SPARC64: Use the new IRQF_ constantsThomas Gleixner2006-07-02
| | | | | | | | | | | | | | | | | | | | | | Use the new IRQF_ constants and remove the SA_INTERRUPT define Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [SPARC64]: Kill sun4v virtual device layer.David S. Miller2006-06-30
| | | | | | | | | | | | | | Replace with a simple IRQ translater in the PROM device tree builder. Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2006-06-29
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (30 commits) [TIPC]: Initial activation message now includes TIPC version number [TIPC]: Improve response to requests for node/link information [TIPC]: Fixed skb_under_panic caused by tipc_link_bundle_buf [IrDA]: Fix the AU1000 FIR dependencies [IrDA]: Fix RCU lock pairing on error path [XFRM]: unexport xfrm_state_mtu [NET]: make skb_release_data() static [NETFILTE] ipv4: Fix typo (Bugzilla #6753) [IrDA]: MCS7780 usb_driver struct should be static [BNX2]: Turn off link during shutdown [BNX2]: Use dev_kfree_skb() instead of the _irq version [ATM]: basic sysfs support for ATM devices [ATM]: [suni] change suni_init to __devinit [ATM]: [iphase] should be __devinit not __init [ATM]: [idt77105] should be __devinit not __init [BNX2]: Add NETIF_F_TSO_ECN [NET]: Add ECN support for TSO [AF_UNIX]: Datagram getpeersec [NET]: Fix logical error in skb_gso_ok [PKT_SCHED]: PSCHED_TADD() and PSCHED_TADD2() can result,tv_usec >= 1000000 ...
| * | [AF_UNIX]: Datagram getpeersecCatherine Zhang2006-06-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements an API whereby an application can determine the label of its peer's Unix datagram sockets via the auxiliary data mechanism of recvmsg. Patch purpose: This patch enables a security-aware application to retrieve the security context of the peer of a Unix datagram socket. The application can then use this security context to determine the security context for processing on behalf of the peer who sent the packet. Patch design and implementation: The design and implementation is very similar to the UDP case for INET sockets. Basically we build upon the existing Unix domain socket API for retrieving user credentials. Linux offers the API for obtaining user credentials via ancillary messages (i.e., out of band/control messages that are bundled together with a normal message). To retrieve the security context, the application first indicates to the kernel such desire by setting the SO_PASSSEC option via getsockopt. Then the application retrieves the security context using the auxiliary data mechanism. An example server application for Unix datagram socket should look like this: toggle = 1; toggle_len = sizeof(toggle); setsockopt(sockfd, SOL_SOCKET, SO_PASSSEC, &toggle, &toggle_len); recvmsg(sockfd, &msg_hdr, 0); if (msg_hdr.msg_controllen > sizeof(struct cmsghdr)) { cmsg_hdr = CMSG_FIRSTHDR(&msg_hdr); if (cmsg_hdr->cmsg_len <= CMSG_LEN(sizeof(scontext)) && cmsg_hdr->cmsg_level == SOL_SOCKET && cmsg_hdr->cmsg_type == SCM_SECURITY) { memcpy(&scontext, CMSG_DATA(cmsg_hdr), sizeof(scontext)); } } sock_setsockopt is enhanced with a new socket option SOCK_PASSSEC to allow a server socket to receive security context of the peer. Testing: We have tested the patch by setting up Unix datagram client and server applications. We verified that the server can retrieve the security context using the auxiliary data mechanism of recvmsg. Signed-off-by: Catherine Zhang <cxzhang@watson.ibm.com> Acked-by: Acked-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | [SPARC64]: of_device layer IRQ resolutionDavid S. Miller2006-06-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Do IRQ determination generically by parsing the PROM properties, and using IRQ controller drivers for final resolution. One immediate positive effect is that all of the IRQ frobbing in the EBUS, ISA, and PCI controller layers has been eliminated. We just look up the of_device and use the properly computed value. The PCI controller irq_build() routines are gone and no longer used. Unfortunately sbus_build_irq() has to remain as there is a direct reference to this in the sunzilog driver. That can be killed off once the sparc32 side of this is written and the sunzilog driver is transformed into an "of" bus driver. Signed-off-by: David S. Miller <davem@davemloft.net>
* | | [SPARC]: Kill interrupt stuff and linux_phandle from device_node.David S. Miller2006-06-29
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | | [SPARC]: Add of_io{remap,unmap}().David S. Miller2006-06-29
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | | [SPARC]: Beginnings of generic of_device framework.David S. Miller2006-06-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The idea is to fully construct the device register and interrupt values into these of_device objects, and convert all of SBUS, EBUS, ISA drivers to use this new stuff. Much ideas and code taken from Ben H.'s powerpc work. Signed-off-by: David S. Miller <davem@davemloft.net>
* | | [SPARC]: Add of_n_{addr,size}_cells().David S. Miller2006-06-29
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | | [SPARC64]: Kill starfire_cookie from SBUS/PCI.David S. Miller2006-06-29
|/ / | | | | | | | | | | | | | | | | Totally unused. We need to traverse the list of global IRQ translaters, so storing it in the per-bus structures was useless. Signed-off-by: David S. Miller <davem@davemloft.net>
* | [PATCH] sched: mc/smt power savings sched policySiddha, Suresh B2006-06-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sysfs entries 'sched_mc_power_savings' and 'sched_smt_power_savings' in /sys/devices/system/cpu/ control the MC/SMT power savings policy for the scheduler. Based on the values (1-enable, 0-disable) for these controls, sched groups cpu power will be determined for different domains. When power savings policy is enabled and under light load conditions, scheduler will minimize the physical packages/cpu cores carrying the load and thus conserving power(with a perf impact based on the workload characteristics... see OLS 2005 CMP kernel scheduler paper for more details..) Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Con Kolivas <kernel@kolivas.org> Cc: "Chen, Kenneth W" <kenneth.w.chen@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2006-06-26
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC]: Add iomap interfaces. [OPENPROM]: Rewrite driver to use in-kernel device tree. [OPENPROMFS]: Rewrite using in-kernel device tree and seq_file. [SPARC]: Add unique device_node IDs and a ".node" property. [SPARC]: Add of_set_property() interface. [SPARC64]: Export auxio_register to modules. [SPARC64]: Add missing interfaces to dma-mapping.h [SPARC64]: Export _PAGE_IE to modules. [SPARC64]: Allow floppy driver to build modular. [SPARC]: Export x_bus_type to modules. [RIOWATCHDOG]: Fix the build. [CPWATCHDOG]: Fix the build. [PARPORT] sunbpp: Fix typo. [MTD] sun_uflash: Port to new EBUS device layer.
| * | [SPARC]: Add unique device_node IDs and a ".node" property.David S. Miller2006-06-26
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC]: Add of_set_property() interface.David S. Miller2006-06-26
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Add missing interfaces to dma-mapping.hDavid S. Miller2006-06-26
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Allow floppy driver to build modular.David S. Miller2006-06-26
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | | [PATCH] Notify page fault call chainAnil S Keshavamurthy2006-06-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With this patch Kprobes now registers for page fault notifications only when their is an active probe registered. Once all the active probes are unregistered their is no need to be notified of page faults and kprobes unregisters itself from the page fault notifications. Hence we will have ZERO side effects when no probes are active. Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-20 11:19:46 -0500