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* cris: Use sigsp()Richard Weinberger2014-08-061-10/+4
| | | | | | Use sigsp() instead of the open coded variant. Signed-off-by: Richard Weinberger <richard@nod.at>
* cris: Use get_signal() signal_setup_done()Richard Weinberger2014-08-061-46/+33
| | | | | | | Use the more generic functions get_signal() signal_setup_done() for signal delivery. Signed-off-by: Richard Weinberger <richard@nod.at>
* cris: update comments for generic idle conversionGeert Uytterhoeven2014-06-061-2/+2
| | | | | | | | | | | | | | | | As of commit 8dc7c5ecd8d0 ("cris: Use generic idle loop"), cris no longer provides cpu_idle(). - On cris-v10, etrax_gpio_wake_up_check() is called from default_idle() instead of cpu_idle(), - On cris-v32, etrax_gpio_wake_up_check() is not called from default_idle(), so remove this (copy-and-paste?) part. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* CRISv10: Readd missing headerJesper Nilsson2014-01-281-0/+1
| | | | | | | The svinto architecture header was mistakenly removed, leading to a compile error. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* Drop code for CRISv10 CPU simulatorJesper Nilsson2014-01-158-107/+65
| | | | | | That simulator is dead and redundant. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* Cleanup whitespace, remove old author tagJesper Nilsson2014-01-091-63/+61
| | | | Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* CRIS: Add missing syscallsJesper Nilsson2014-01-091-82/+98
| | | | | | | Complete list of syscalls for CRISv10 and CRISv32. Clean up some whitespace at the same time. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* cris: sync_serial: remove interruptible_sleep_onArnd Bergmann2014-01-091-1/+3
| | | | | | | | | | | sleep_on and its variants are racy and going away. This replaces the two uses in the cris sync_serial drivers with the equivalent but race-free wait_event_interruptible. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Mikael Starvik <starvik@axis.com> Cc: linux-cris-kernel@axis.com Signed-off-by: Jesper Nilsson <jespern@axis.com>
* cris: remove deprecated IRQF_DISABLEDMichael Opdenacker2014-01-083-8/+6
| | | | | | | | | | | | | | | | | | This patch proposes to remove the IRQF_DISABLED flag from CRIS architecture code. It's a NOOP since 2.6.35 and it will be removed one day. Comments mentioning IRQF_DISABLED are also updated, knowing that all interrupts are now "fast interrupts", their handlers running with interrupts disabled. Don't hesitate to let me know if you have other ways of rephrasing the comments! This is an update for 3.11 of a patch already sent for 3.10 Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com> Signed-off-by: Jesper Nilsson <jespern@axis.com>
* CRIS: drop unused Kconfig symbolsPaul Bolle2013-09-101-23/+0
| | | | | Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* CRIS: Remove last traces of legacy RTC driversPaul Bolle2013-09-102-49/+0
| | | | | | | | | | These legacy drivers were removed in commit 9c75fc8c5c8c50775fc8b89418219221335b758f ("CRIS: Remove legacy RTC drivers"). Now remove their last traces in two Kconfig files and one Makefile. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jesper Nilsson <jespern@axis.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds2013-07-091-3/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking updates from David Miller: "This is a re-do of the net-next pull request for the current merge window. The only difference from the one I made the other day is that this has Eliezer's interface renames and the timeout handling changes made based upon your feedback, as well as a few bug fixes that have trickeled in. Highlights: 1) Low latency device polling, eliminating the cost of interrupt handling and context switches. Allows direct polling of a network device from socket operations, such as recvmsg() and poll(). Currently ixgbe, mlx4, and bnx2x support this feature. Full high level description, performance numbers, and design in commit 0a4db187a999 ("Merge branch 'll_poll'") From Eliezer Tamir. 2) With the routing cache removed, ip_check_mc_rcu() gets exercised more than ever before in the case where we have lots of multicast addresses. Use a hash table instead of a simple linked list, from Eric Dumazet. 3) Add driver for Atheros CQA98xx 802.11ac wireless devices, from Bartosz Markowski, Janusz Dziedzic, Kalle Valo, Marek Kwaczynski, Marek Puzyniak, Michal Kazior, and Sujith Manoharan. 4) Support reporting the TUN device persist flag to userspace, from Pavel Emelyanov. 5) Allow controlling network device VF link state using netlink, from Rony Efraim. 6) Support GRE tunneling in openvswitch, from Pravin B Shelar. 7) Adjust SOCK_MIN_RCVBUF and SOCK_MIN_SNDBUF for modern times, from Daniel Borkmann and Eric Dumazet. 8) Allow controlling of TCP quickack behavior on a per-route basis, from Cong Wang. 9) Several bug fixes and improvements to vxlan from Stephen Hemminger, Pravin B Shelar, and Mike Rapoport. In particular, support receiving on multiple UDP ports. 10) Major cleanups, particular in the area of debugging and cookie lifetime handline, to the SCTP protocol code. From Daniel Borkmann. 11) Allow packets to cross network namespaces when traversing tunnel devices. From Nicolas Dichtel. 12) Allow monitoring netlink traffic via AF_PACKET sockets, in a manner akin to how we monitor real network traffic via ptype_all. From Daniel Borkmann. 13) Several bug fixes and improvements for the new alx device driver, from Johannes Berg. 14) Fix scalability issues in the netem packet scheduler's time queue, by using an rbtree. From Eric Dumazet. 15) Several bug fixes in TCP loss recovery handling, from Yuchung Cheng. 16) Add support for GSO segmentation of MPLS packets, from Simon Horman. 17) Make network notifiers have a real data type for the opaque pointer that's passed into them. Use this to properly handle network device flag changes in arp_netdev_event(). From Jiri Pirko and Timo Teräs. 18) Convert several drivers over to module_pci_driver(), from Peter Huewe. 19) tcp_fixup_rcvbuf() can loop 500 times over loopback, just use a O(1) calculation instead. From Eric Dumazet. 20) Support setting of explicit tunnel peer addresses in ipv6, just like ipv4. From Nicolas Dichtel. 21) Protect x86 BPF JIT against spraying attacks, from Eric Dumazet. 22) Prevent a single high rate flow from overruning an individual cpu during RX packet processing via selective flow shedding. From Willem de Bruijn. 23) Don't use spinlocks in TCP md5 signing fast paths, from Eric Dumazet. 24) Don't just drop GSO packets which are above the TBF scheduler's burst limit, chop them up so they are in-bounds instead. Also from Eric Dumazet. 25) VLAN offloads are missed when configured on top of a bridge, fix from Vlad Yasevich. 26) Support IPV6 in ping sockets. From Lorenzo Colitti. 27) Receive flow steering targets should be updated at poll() time too, from David Majnemer. 28) Fix several corner case regressions in PMTU/redirect handling due to the routing cache removal, from Timo Teräs. 29) We have to be mindful of ipv4 mapped ipv6 sockets in upd_v6_push_pending_frames(). From Hannes Frederic Sowa. 30) Fix L2TP sequence number handling bugs, from James Chapman." * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1214 commits) drivers/net: caif: fix wrong rtnl_is_locked() usage drivers/net: enic: release rtnl_lock on error-path vhost-net: fix use-after-free in vhost_net_flush net: mv643xx_eth: do not use port number as platform device id net: sctp: confirm route during forward progress virtio_net: fix race in RX VQ processing virtio: support unlocked queue poll net/cadence/macb: fix bug/typo in extracting gem_irq_read_clear bit Documentation: Fix references to defunct linux-net@vger.kernel.org net/fs: change busy poll time accounting net: rename low latency sockets functions to busy poll bridge: fix some kernel warning in multicast timer sfc: Fix memory leak when discarding scattered packets sit: fix tunnel update via netlink dt:net:stmmac: Add dt specific phy reset callback support. dt:net:stmmac: Add support to dwmac version 3.610 and 3.710 dt:net:stmmac: Allocate platform data only if its NULL. net:stmmac: fix memleak in the open method ipv6: rt6_check_neigh should successfully verify neigh if no NUD information are available net: ipv6: fix wrong ping_v6_sendmsg return value ...
| * net: Add missing dependencies on NETDEVICESBen Hutchings2013-06-191-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ETRAX_ETHERNET selects ETHERNET and MII, which depend on NETDEVICES. I don't think anything should select NETDEVICES, so make it a dependency. It also doesn't need to select or depend on ETHERNET, which has nothing to do with the Ethernet library functions. BPCTL selects MII, which depends on NETDEVICES. But everything in the drivers/staging/silicom directory is related to net devices, so make NET_VENDOR_SILICOM depend on NETDEVICES and remove the now-redundant dependencies on NET. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: Move MII out from under NET_CORE and hide itBen Hutchings2013-06-191-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | All drivers that select MII also need to select NET_CORE because MII depends on it. This is a bit ridiculous because NET_CORE is just a menu option that doesn't enable any code by itself. There is also no need for it to be a visible option, since its users all select it. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | cris/kgdb: Remove sections protected by #ifdef PROCESS_SUPPORTGeert Uytterhoeven2013-06-161-255/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When enabled, it doesn't build anyway: arch/cris/arch-v10/kernel/kgdb.c: In function 'copy_registers_from_stack': arch/cris/arch-v10/kernel/kgdb.c:631:2: error: unknown type name 'stack_registers' arch/cris/arch-v10/kernel/kgdb.c:631:24: error: 'stack_registers' undeclared (first use in this function) arch/cris/arch-v10/kernel/kgdb.c:631:24: note: each undeclared identifier is reported only once for each function it appears in arch/cris/arch-v10/kernel/kgdb.c:631:41: error: expected expression before ')' token arch/cris/arch-v10/kernel/kgdb.c:635:11: error: request for member 'r' in something not a structure or union arch/cris/arch-v10/kernel/kgdb.c:636:29: error: 'stack_list' undeclared (first use in this function) arch/cris/arch-v10/kernel/kgdb.c:637:16: error: request for member 'pc' in something not a structure or union arch/cris/arch-v10/kernel/kgdb.c:638:18: error: request for member 'dccr' in something not a structure or union arch/cris/arch-v10/kernel/kgdb.c:639:17: error: request for member 'srp' in something not a structure or union arch/cris/arch-v10/kernel/kgdb.c: In function 'copy_registers_to_stack': arch/cris/arch-v10/kernel/kgdb.c:648:2: error: unknown type name 'stack_registers' arch/cris/arch-v10/kernel/kgdb.c:648:24: error: 'stack_registers' undeclared (first use in this function) arch/cris/arch-v10/kernel/kgdb.c:648:41: error: expected expression before ')' token arch/cris/arch-v10/kernel/kgdb.c:652:4: error: request for member 'r' in something not a structure or union arch/cris/arch-v10/kernel/kgdb.c:654:3: error: request for member 'pc' in something not a structure or union arch/cris/arch-v10/kernel/kgdb.c:655:3: error: request for member 'dccr' in something not a structure or union arch/cris/arch-v10/kernel/kgdb.c:656:3: error: request for member 'srp' in something not a structure or union arch/cris/arch-v10/kernel/kgdb.c: In function 'write_stack_register': arch/cris/arch-v10/kernel/kgdb.c:702:2: error: unknown type name 'stack_registers' arch/cris/arch-v10/kernel/kgdb.c:702:24: error: 'stack_registers' undeclared (first use in this function) arch/cris/arch-v10/kernel/kgdb.c:702:41: error: expected expression before ')' token arch/cris/arch-v10/kernel/kgdb.c:707:4: error: request for member 'r' in something not a structure or union arch/cris/arch-v10/kernel/kgdb.c:710:3: error: 'stack_list' undeclared (first use in this function) arch/cris/arch-v10/kernel/kgdb.c:713:4: error: request for member 'pc' in something not a structure or union arch/cris/arch-v10/kernel/kgdb.c:716:4: error: request for member 'srp' in something not a structure or union arch/cris/arch-v10/kernel/kgdb.c:719:4: error: request for member 'dccr' in something not a structure or union arch/cris/arch-v10/kernel/kgdb.c: In function 'stub_is_stopped': arch/cris/arch-v10/kernel/kgdb.c:827:36: error: 'pos' undeclared (first use in this function) arch/cris/arch-v10/kernel/kgdb.c: In function 'handle_exception': arch/cris/arch-v10/kernel/kgdb.c:1064:40: error: 'number_of_tasks' undeclared (first use in this function) arch/cris/arch-v10/kernel/kgdb.c:1125:8: error: implicit declaration of function 'os_is_started' [-Werror=implicit-function-declaration] Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
* | cris/kgdb: Fix buffer overflow in getpacket()Geert Uytterhoeven2013-06-161-1/+1
| | | | | | | | | | | | | | arch/cris/arch-v10/kernel/kgdb.c: In function 'handle_exception': arch/cris/arch-v10/kernel/kgdb.c:534:17: warning: array subscript is above array bounds [-Warray-bounds] Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
* | cris/kgdb: Remove obsolete USED*() macrosGeert Uytterhoeven2013-06-161-9/+0
| | | | | | | | | | | | handle_exception and internal_stack are now global Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
* | cris/kgdb: Make symbols used from asm globalGeert Uytterhoeven2013-06-161-109/+109
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/cris/arch-v10/kernel/built-in.o: In function `kgdb_handle_breakpoint': (.text+0x2c3e): undefined reference to `reg' arch/cris/arch-v10/kernel/built-in.o: In function `kgdb_handle_breakpoint': (.text+0x2c48): undefined reference to `reg' arch/cris/arch-v10/kernel/built-in.o: In function `kgdb_handle_breakpoint': (.text+0x2c50): undefined reference to `reg' arch/cris/arch-v10/kernel/built-in.o: In function `kgdb_handle_breakpoint': (.text+0x2c58): undefined reference to `reg' arch/cris/arch-v10/kernel/built-in.o: In function `kgdb_handle_breakpoint': (.text+0x2c60): undefined reference to `reg' arch/cris/arch-v10/kernel/built-in.o:(.text+0x2c68): more undefined references to `reg' follow arch/cris/arch-v10/kernel/built-in.o: In function `is_static': kgdb.c:(.text+0x2d46): undefined reference to `internal_stack' kgdb.c:(.text+0x2d4e): undefined reference to `handle_exception' kgdb.c:(.text+0x2d54): undefined reference to `reg' kgdb.c:(.text+0x2d5c): undefined reference to `reg' kgdb.c:(.text+0x2d64): undefined reference to `reg' kgdb.c:(.text+0x2d6c): undefined reference to `reg' kgdb.c:(.text+0x2d74): undefined reference to `reg' arch/cris/arch-v10/kernel/built-in.o:kgdb.c:(.text+0x2d7c): more undefined references to `reg' follow arch/cris/arch-v10/kernel/built-in.o: In function `kgdb_handle_serial': (.text+0x2ef6): undefined reference to `internal_stack' arch/cris/arch-v10/kernel/built-in.o: In function `kgdb_handle_serial': (.text+0x2efe): undefined reference to `handle_exception' arch/cris/arch-v10/kernel/built-in.o: In function `goback': kgdb.c:(.text+0x2f04): undefined reference to `reg' kgdb.c:(.text+0x2f0c): undefined reference to `reg' kgdb.c:(.text+0x2f14): undefined reference to `reg' kgdb.c:(.text+0x2f1c): undefined reference to `reg' kgdb.c:(.text+0x2f24): undefined reference to `reg' arch/cris/arch-v10/kernel/built-in.o:kgdb.c:(.text+0x2f2c): more undefined references to `reg' follow Make reg, internal_stack, and handle_exception global to fix this. Rename reg to cris_reg as it's a too generic name for a global symbol. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
* | cris/kgdb: Use #ifdef PROCESS_SUPPORT where neededGeert Uytterhoeven2013-06-161-1/+3
| | | | | | | | | | | | | | | | | | arch/cris/arch-v10/kernel/kgdb.c:354:12: warning: 'current_thread_c' defined but not used [-Wunused-variable] arch/cris/arch-v10/kernel/kgdb.c:355:12: warning: 'current_thread_g' defined but not used [-Wunused-variable] arch/cris/arch-v10/kernel/kgdb.c:359:18: warning: 'reg_g' defined but not used [-Wunused-variable] arch/cris/arch-v10/kernel/kgdb.c:622:1: warning: 'copy_registers' defined but not used [-Wunused-function] Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
* | cris/kgdb: Kill forward declarations for static functionsGeert Uytterhoeven2013-06-161-241/+165
| | | | | | | | | | | | | | | | | | | | | | Move some functions around and kill forward declarations for static functions. This fixes: arch/cris/arch-v10/kernel/kgdb.c:255:13: warning: 'copy_registers_from_stack' declared 'static' but never defined [-Wunused-function] arch/cris/arch-v10/kernel/kgdb.c:259:13: warning: 'copy_registers_to_stack' declared 'static' but never defined [-Wunused-function] arch/cris/arch-v10/kernel/kgdb.c:267:12: warning: 'write_stack_register' declared 'static' but never defined [-Wunused-function] Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
* | cris/kgdb: Remove unused static int do_printkGeert Uytterhoeven2013-06-161-2/+0
| | | | | | | | Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
* | cris/kgdb: Properly split long lines in asmGeert Uytterhoeven2013-06-161-175/+175
|/ | | | | | | | | | | | | | | | | | arch/cris/arch-v10/kernel/kgdb.c:1273:6: warning: missing terminating " character [enabled by default] arch/cris/arch-v10/kernel/kgdb.c:1359:1: warning: missing terminating " character [enabled by default] arch/cris/arch-v10/kernel/kgdb.c:1370:6: warning: missing terminating " character [enabled by default] arch/cris/arch-v10/kernel/kgdb.c:1457:1: warning: missing terminating " character [enabled by default] arch/cris/arch-v10/kernel/kgdb.c:1273:6: warning: missing terminating " character [enabled by default] arch/cris/arch-v10/kernel/kgdb.c:1273:1: error: missing terminating " character arch/cris/arch-v10/kernel/kgdb.c:1274:3: error: expected string literal before '.' token arch/cris/arch-v10/kernel/kgdb.c:1359:1: warning: missing terminating " character [enabled by default] arch/cris/arch-v10/kernel/kgdb.c:1359:1: error: missing terminating " character arch/cris/arch-v10/kernel/kgdb.c:1370:6: warning: missing terminating " character [enabled by default] arch/cris/arch-v10/kernel/kgdb.c:1370:1: error: missing terminating " character arch/cris/arch-v10/kernel/kgdb.c:1457:1: warning: missing terminating " character [enabled by default] arch/cris/arch-v10/kernel/kgdb.c:1457:1: error: missing terminating " character Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
* cris: single_open() leaksAl Viro2013-05-051-1/+1
| | | | | Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Merge branch 'for-linus' of ↵Linus Torvalds2013-05-011-168/+133
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull VFS updates from Al Viro, Misc cleanups all over the place, mainly wrt /proc interfaces (switch create_proc_entry to proc_create(), get rid of the deprecated create_proc_read_entry() in favor of using proc_create_data() and seq_file etc). 7kloc removed. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (204 commits) don't bother with deferred freeing of fdtables proc: Move non-public stuff from linux/proc_fs.h to fs/proc/internal.h proc: Make the PROC_I() and PDE() macros internal to procfs proc: Supply a function to remove a proc entry by PDE take cgroup_open() and cpuset_open() to fs/proc/base.c ppc: Clean up scanlog ppc: Clean up rtas_flash driver somewhat hostap: proc: Use remove_proc_subtree() drm: proc: Use remove_proc_subtree() drm: proc: Use minor->index to label things, not PDE->name drm: Constify drm_proc_list[] zoran: Don't print proc_dir_entry data in debug reiserfs: Don't access the proc_dir_entry in r_open(), r_start() r_show() proc: Supply an accessor for getting the data from a PDE's parent airo: Use remove_proc_subtree() rtl8192u: Don't need to save device proc dir PDE rtl8187se: Use a dir under /proc/net/r8180/ proc: Add proc_mkdir_data() proc: Move some bits from linux/proc_fs.h to linux/{of.h,signal.h,tty.h} proc: Move PDE_NET() to fs/proc/proc_net.c ...
| * cris: Don't use create_proc_read_entry()David Howells2013-04-291-166/+133
| | | | | | | | | | | | | | | | | | | | | | Don't use create_proc_read_entry() as that is deprecated, but rather use proc_create_data() and seq_file instead. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> cc: Mikael Starvik <starvik@axis.com> cc: linux-cris-kernel@axis.com Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * get rid of a bunch of open-coded create_proc_read_entry()Al Viro2013-04-091-3/+1
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | dump_stack: unify debug information printed by show_regs()Tejun Heo2013-04-301-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | show_regs() is inherently arch-dependent but it does make sense to print generic debug information and some archs already do albeit in slightly different forms. This patch introduces a generic function to print debug information from show_regs() so that different archs print out the same information and it's much easier to modify what's printed. show_regs_print_info() prints out the same debug info as dump_stack() does plus task and thread_info pointers. * Archs which didn't print debug info now do. alpha, arc, blackfin, c6x, cris, frv, h8300, hexagon, ia64, m32r, metag, microblaze, mn10300, openrisc, parisc, score, sh64, sparc, um, xtensa * Already prints debug info. Replaced with show_regs_print_info(). The printed information is superset of what used to be there. arm, arm64, avr32, mips, powerpc, sh32, tile, unicore32, x86 * s390 is special in that it used to print arch-specific information along with generic debug info. Heiko and Martin think that the arch-specific extra isn't worth keeping s390 specfic implementation. Converted to use the generic version. Note that now all archs print the debug info before actual register dumps. An example BUG() dump follows. kernel BUG at /work/os/work/kernel/workqueue.c:4841! invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.9.0-rc1-work+ #7 Hardware name: empty empty/S3992, BIOS 080011 10/26/2007 task: ffff88007c85e040 ti: ffff88007c860000 task.ti: ffff88007c860000 RIP: 0010:[<ffffffff8234a07e>] [<ffffffff8234a07e>] init_workqueues+0x4/0x6 RSP: 0000:ffff88007c861ec8 EFLAGS: 00010246 RAX: ffff88007c861fd8 RBX: ffffffff824466a8 RCX: 0000000000000001 RDX: 0000000000000046 RSI: 0000000000000001 RDI: ffffffff8234a07a RBP: ffff88007c861ec8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8234a07a R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88007dc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: ffff88015f7ff000 CR3: 00000000021f1000 CR4: 00000000000007f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Stack: ffff88007c861ef8 ffffffff81000312 ffffffff824466a8 ffff88007c85e650 0000000000000003 0000000000000000 ffff88007c861f38 ffffffff82335e5d ffff88007c862080 ffffffff8223d8c0 ffff88007c862080 ffffffff81c47760 Call Trace: [<ffffffff81000312>] do_one_initcall+0x122/0x170 [<ffffffff82335e5d>] kernel_init_freeable+0x9b/0x1c8 [<ffffffff81c47760>] ? rest_init+0x140/0x140 [<ffffffff81c4776e>] kernel_init+0xe/0xf0 [<ffffffff81c6be9c>] ret_from_fork+0x7c/0xb0 [<ffffffff81c47760>] ? rest_init+0x140/0x140 ... v2: Typo fix in x86-32. v3: CPU number dropped from show_regs_print_info() as dump_stack_print_info() has been updated to print it. s390 specific implementation dropped as requested by s390 maintainers. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Fengguang Wu <fengguang.wu@intel.com> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: Chris Metcalf <cmetcalf@tilera.com> [tile bits] Acked-by: Richard Kuo <rkuo@codeaurora.org> [hexagon bits] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | cris: Use generic idle loopThomas Gleixner2013-04-081-1/+2
|/ | | | | | | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Cc: Magnus Damm <magnus.damm@gmail.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Link: http://lkml.kernel.org/r/20130321215234.148829489@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* Merge branch 'for-linus' of ↵Linus Torvalds2013-02-261-4/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs pile (part one) from Al Viro: "Assorted stuff - cleaning namei.c up a bit, fixing ->d_name/->d_parent locking violations, etc. The most visible changes here are death of FS_REVAL_DOT (replaced with "has ->d_weak_revalidate()") and a new helper getting from struct file to inode. Some bits of preparation to xattr method interface changes. Misc patches by various people sent this cycle *and* ocfs2 fixes from several cycles ago that should've been upstream right then. PS: the next vfs pile will be xattr stuff." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (46 commits) saner proc_get_inode() calling conventions proc: avoid extra pde_put() in proc_fill_super() fs: change return values from -EACCES to -EPERM fs/exec.c: make bprm_mm_init() static ocfs2/dlm: use GFP_ATOMIC inside a spin_lock ocfs2: fix possible use-after-free with AIO ocfs2: Fix oops in ocfs2_fast_symlink_readpage() code path get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero target: writev() on single-element vector is pointless export kernel_write(), convert open-coded instances fs: encode_fh: return FILEID_INVALID if invalid fid_type kill f_vfsmnt vfs: kill FS_REVAL_DOT by adding a d_weak_revalidate dentry op nfsd: handle vfs_getattr errors in acl protocol switch vfs_getattr() to struct path default SET_PERSONALITY() in linux/elf.h ceph: prepopulate inodes only when request is aborted d_hash_and_lookup(): export, switch open-coded instances 9p: switch v9fs_set_create_acl() to inode+fid, do it before d_instantiate() 9p: split dropping the acls from v9fs_set_create_acl() ...
| * new helper: file_inode(file)Al Viro2013-02-221-4/+4
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge branch 'for-linus' of ↵Linus Torvalds2013-02-231-58/+7
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal Pull signal handling cleanups from Al Viro: "This is the first pile; another one will come a bit later and will contain SYSCALL_DEFINE-related patches. - a bunch of signal-related syscalls (both native and compat) unified. - a bunch of compat syscalls switched to COMPAT_SYSCALL_DEFINE (fixing several potential problems with missing argument validation, while we are at it) - a lot of now-pointless wrappers killed - a couple of architectures (cris and hexagon) forgot to save altstack settings into sigframe, even though they used the (uninitialized) values in sigreturn; fixed. - microblaze fixes for delivery of multiple signals arriving at once - saner set of helpers for signal delivery introduced, several architectures switched to using those." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (143 commits) x86: convert to ksignal sparc: convert to ksignal arm: switch to struct ksignal * passing alpha: pass k_sigaction and siginfo_t using ksignal pointer burying unused conditionals make do_sigaltstack() static arm64: switch to generic old sigaction() (compat-only) arm64: switch to generic compat rt_sigaction() arm64: switch compat to generic old sigsuspend arm64: switch to generic compat rt_sigqueueinfo() arm64: switch to generic compat rt_sigpending() arm64: switch to generic compat rt_sigprocmask() arm64: switch to generic sigaltstack sparc: switch to generic old sigsuspend sparc: COMPAT_SYSCALL_DEFINE does all sign-extension as well as SYSCALL_DEFINE sparc: kill sign-extending wrappers for native syscalls kill sparc32_open() sparc: switch to use of generic old sigaction sparc: switch sys_compat_rt_sigaction() to COMPAT_SYSCALL_DEFINE mips: switch to generic sys_fork() and sys_clone() ...
| * | cris: kill weird arguments of sys_{rt_,}sigreturn()Al Viro2013-02-031-8/+4
| | | | | | | | | | | | | | | | | | | | | It's cheaper to call current_pt_regs() than bother fetching the damn thing from stack. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | cris: switch to generic old sigaction()Al Viro2013-02-031-31/+0
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | cris: switch to generic old sigsuspendAl Viro2013-02-031-12/+0
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | cris: don't leave ->uc_stack unitialized - we'll use its contents on sigreturnAl Viro2013-02-031-0/+2
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | cris: switch to generic sigaltstackAl Viro2013-02-031-7/+1
| |/ | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | time: convert arch_gettimeoffset to a pointerStephen Warren2012-12-241-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, whenever CONFIG_ARCH_USES_GETTIMEOFFSET is enabled, each arch core provides a single implementation of arch_gettimeoffset(). In many cases, different sub-architectures, different machines, or different timer providers exist, and so the arch ends up implementing arch_gettimeoffset() as a call-through-pointer anyway. Examples are ARM, Cris, M68K, and it's arguable that the remaining architectures, M32R and Blackfin, should be doing this anyway. Modify arch_gettimeoffset so that it itself is a function pointer, which the arch initializes. This will allow later changes to move the initialization of this function into individual machine support or timer drivers. This is particularly useful for code in drivers/clocksource which should rely on an arch-independant mechanism to register their implementation of arch_gettimeoffset(). This patch also converts the Cris architecture to set arch_gettimeoffset directly to the final implementation in time_init(), because Cris already had separate time_init() functions per sub-architecture. M68K and ARM are converted to set arch_gettimeoffset to the final implementation in later patches, because they already have function pointers in place for this purpose. Cc: Russell King <linux@arm.linux.org.uk> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Mikael Starvik <starvik@axis.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Acked-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* | cris: move usec/nsec conversion to do_slow_gettimeoffsetStephen Warren2012-12-241-2/+2
|/ | | | | | | | | | | | Move usec to nsec conversion from arch_gettimeoffset() to do_slow_gettimeoffset(); in a future patch, do_slow_gettimeoffset() will be used directly as the implementation of arch_gettimeoffset(), so needs to perform all required calculations. Cc: Mikael Starvik <starvik@axis.com> Cc: linux-cris-kernel@axis.com Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* flagday: don't pass regs to copy_thread()Al Viro2012-11-281-2/+1
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* cris: switch to generic fork/vfork/cloneAl Viro2012-11-281-28/+4
| | | | | | | same braindamage as on s390 - the first two arguments of clone(2) in the wrong order. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* cris: switch to generic kernel_execve/sys_execveAl Viro2012-10-142-32/+2
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* cris: switch to generic kernel_thread()Al Viro2012-10-142-60/+33
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* vfs: define struct filename and have getname() return itJeff Layton2012-10-121-2/+2
| | | | | | | | | | | | | | | | | | | | | | getname() is intended to copy pathname strings from userspace into a kernel buffer. The result is just a string in kernel space. It would however be quite helpful to be able to attach some ancillary info to the string. For instance, we could attach some audit-related info to reduce the amount of audit-related processing needed. When auditing is enabled, we could also call getname() on the string more than once and not need to recopy it from userspace. This patchset converts the getname()/putname() interfaces to return a struct instead of a string. For now, the struct just tracks the string in kernel space and the original userland pointer for it. Later, we'll add other information to the struct as it becomes convenient. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* new helper: signal_delivered()Al Viro2012-06-011-1/+1
| | | | | | | | | | | | | | Does block_sigmask() + tracehook_signal_handler(); called when sigframe has been successfully built. All architectures converted to it; block_sigmask() itself is gone now (merged into this one). I'm still not too happy with the signature, but that's a separate story (IMO we need a structure that would contain signal number + siginfo + k_sigaction, so that get_signal_to_deliver() would fill one, signal_delivered(), handle_signal() and probably setup...frame() - take one). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from setAl Viro2012-06-011-4/+0
| | | | | | | | Only 3 out of 63 do not. Renamed the current variant to __set_current_blocked(), added set_current_blocked() that will exclude unblockable signals, switched open-coded instances to it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* pull clearing RESTORE_SIGMASK into block_sigmask()Al Viro2012-06-011-12/+2
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* new helper: sigmask_to_save()Al Viro2012-06-011-8/+3
| | | | | | | replace boilerplate "should we use ->saved_sigmask or ->blocked?" with calls of obvious inlined helper... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* new helper: restore_saved_sigmask()Al Viro2012-06-011-4/+1
| | | | | | | | | first fruits of ..._restore_sigmask() helpers: now we can take boilerplate "signal didn't have a handler, clear RESTORE_SIGMASK and restore the blocked mask from ->saved_mask" into a common helper. Open-coded instances switched... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Merge tag 'cris-for-linus' of git://jni.nu/crisLinus Torvalds2012-05-256-910/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull CRIS changes from Jesper Nilsson: "No major changes here, but fixes some compile errors for CRIS, some small style issues, some documentation and as a bonus nukes a couple of obsolete rtc-files and related code." * tag 'cris-for-linus' of git://jni.nu/cris: cris: Remove old legacy "-traditional" flag from arch-v10/lib/Makefile CRIS: Remove legacy RTC drivers cris/mm/fault.c: Port OOM changes to do_page_fault cris:fix the wrong function declear CRIS: Add _sdata to vmlinux.lds.S cris: posix_types.h, include asm-generic/posix_types.h CRIS: Update documentation cris/arch-v32: cryptocop: Use kzalloc net:removed the unused variable cris:removed the unused variable CRISv32: Correct name of read_mostly section.
| * cris: Remove old legacy "-traditional" flag from arch-v10/lib/MakefilePaul Gortmaker2012-04-191-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Most of these have been purged years ago. This one silently lived on until commit 69349c2dc01c489eccaa4c472542c08e370c6d7e "kconfig: fix IS_ENABLED to not require all options to be defined" In the above, we use some macro trickery to create a conditional that is valid in CPP and in C usage. However that trickery doesn't sit well if you have the legacy "-traditional" flag enabled. You'll get: AS arch/cris/arch-v10/lib/checksum.o In file included from <command-line>:4:0: include/linux/kconfig.h:23:0: error: syntax error in macro parameter list make[2]: *** [arch/cris/arch-v10/lib/checksum.o] Error 1 Everything builds fine w/o "-traditional" so simply drop it from this location as well. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
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