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2006-06-26[PATCH] proc: Fix the .. inode number on /proc/<pid>/fdEric W. Biederman
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] nfsd kconfig: select things at the closest tristate instead of boolHerbert Xu
I noticed recently that my CONFIG_CRYPTO_MD5 turned into a y again instead of m. It turns out that CONFIG_NFSD_V4 is selecting it to be y even though I've chosen to compile nfsd as a module. In general when we have a bool sitting under a tristate it is better to select things you need from the tristate rather than the bool since that allows the things you select to be modules. The following patch does it for nfsd. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] i4l: Gigaset drivers: add IOCTLs to compat_ioctl.hHansjoerg Lipp
Add the IOCTLs of the Gigaset drivers to compat_ioctl.h in order to make them available for 32 bit programs on 64 bit platforms. Please merge. Signed-off-by: Hansjoerg Lipp <hjlipp@web.de> Acked-by: Tilman Schmidt <tilman@imap.cc> Cc: Karsten Keil <kkeil@suse.de> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] isdn4linux: Gigaset driver cleanupTilman Schmidt
The following patch to the common part of the Siemens Gigaset driver prevents it from trying to send the +++ break sequence if the device has been disconnected, and removes a couple of assignments which didn't have any effect. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Acked-by: Hansjoerg Lipp <hjlipp@web.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] isdn4linux: Gigaset base driver: improve error recoveryTilman Schmidt
The following patch to the Siemens Gigaset base driver adds graceful recovery for some frequently encountered error conditions, by retrying failed control requests (eg. stalled control pipe), and by closing and reopening the AT command channel when it appears to be stuck. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Acked-by: Hansjoerg Lipp <hjlipp@web.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Fix typo in drivers/isdn/hisax/q931.cEric Sesterhenn
This fixes coverity bug #517. Since IESIZE is greater than IESIZE_NI1 we might run past the end of ielist_ni1. This fixes it by using the proper IESIZE_NI1 define. Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Acked-by: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] CAPI crash / race conditionMichael Buesch
I am getting more or less reproducible crashes from the CAPI subsystem using the fcdsl driver: Unable to handle kernel NULL pointer dereference at virtual address 00000010 printing eip: c39bbca4 *pde = 00000000 Oops: 0000 [#1] Modules linked in: netconsole capi capifs 3c59x mii fcdsl kernelcapi uhci_hcd usbcore ide_cd cdrom CPU: 0 EIP: 0060:[<c39bbca4>] Tainted: P VLI EFLAGS: 00010202 (2.6.16.11 #3) EIP is at handle_minor_send+0x17a/0x241 [capi] eax: c24abbc0 ebx: c0b4c980 ecx: 00000010 edx: 00000010 esi: c1679140 edi: c2783016 ebp: 0000c28d esp: c0327e24 ds: 007b es: 007b ss: 0068 Process swapper (pid: 0, threadinfo=c0326000 task=c02e1300) Stack: <0>000005b4 c1679180 00000000 c28d0000 c1ce04e0 c2f69654 c221604e c1679140 c39bc19a 00000038 c20c0400 c075c560 c1f2f800 00000000 c01dc9b5 c1e96a40 c075c560 c2ed64c0 c1e96a40 c01dcd3b c2fb94e8 c075c560 c0327f00 c1e96a40 Call Trace: [<c39bc19a>] capinc_tty_write+0xda/0xf3 [capi] [<c01dc9b5>] ppp_sync_push+0x52/0xfe [<c01dcd3b>] ppp_sync_send+0x1f5/0x204 [<c01d9bc1>] ppp_push+0x3e/0x9c [<c01dacd4>] ppp_xmit_process+0x422/0x4cc [<c01daf3f>] ppp_start_xmit+0x1c1/0x1f6 [<c0213ea5>] qdisc_restart+0xa7/0x135 [<c020b112>] dev_queue_xmit+0xba/0x19e [<c0223f69>] ip_output+0x1eb/0x236 [<c0220907>] ip_forward+0x1c1/0x21a [<c021fa6c>] ip_rcv+0x38e/0x3ea [<c020b4c2>] netif_receive_skb+0x166/0x195 [<c020b55e>] process_backlog+0x6d/0xd2 [<c020a30f>] net_rx_action+0x6a/0xff [<c0112909>] __do_softirq+0x35/0x7d [<c0112973>] do_softirq+0x22/0x26 [<c0103a9d>] do_IRQ+0x1e/0x25 [<c010255a>] common_interrupt+0x1a/0x20 [<c01013c5>] default_idle+0x2b/0x53 [<c0101426>] cpu_idle+0x39/0x4e [<c0328386>] start_kernel+0x20b/0x20d Code: c0 e8 b3 b6 77 fc 85 c0 75 10 68 d8 c8 9b c3 e8 82 3d 75 fc 8b 43 60 5a eb 50 8d 56 50 c7 00 00 00 00 00 66 89 68 04 eb 02 89 ca <8b> 0a 85 c9 75 f8 89 02 89 da ff 46 54 8b 46 10 e8 30 79 fd ff <0>Kernel panic - not syncing: Fatal exception in interrupt That oops took me to the "ackqueue" implementation in capi.c. The crash occured in capincci_add_ack() (auto-inlined by the compiler). I read the code a bit and finally decided to replace the custom linked list implementation (struct capiminor->ackqueue) by a struct list_head. That did not solve the crash, but produced the following interresting oops: Unable to handle kernel paging request at virtual address 00200200 printing eip: c39bb1f5 *pde = 00000000 Oops: 0002 [#1] Modules linked in: netconsole capi capifs 3c59x mii fcdsl kernelcapi uhci_hcd usbcore ide_cd cdrom CPU: 0 EIP: 0060:[<c39bb1f5>] Tainted: P VLI EFLAGS: 00010246 (2.6.16.11 #3) EIP is at capiminor_del_ack+0x18/0x49 [capi] eax: 00200200 ebx: c18d41a0 ecx: c1385620 edx: 00100100 esi: 0000d147 edi: 00001103 ebp: 0000d147 esp: c1093f3c ds: 007b es: 007b ss: 0068 Process events/0 (pid: 3, threadinfo=c1092000 task=c1089030) Stack: <0>c2a17580 c18d41a0 c39bbd16 00000038 c18d41e0 00000000 d147c640 c29e0b68 c29e0b90 00000212 c29e0b68 c39932b2 c29e0bb0 c10736a0 c0119ef0 c399326c c10736a8 c10736a0 c10736b0 c0119f93 c011a06e 00000001 00000000 00000000 Call Trace: [<c39bbd16>] handle_minor_send+0x1af/0x241 [capi] [<c39932b2>] recv_handler+0x46/0x5f [kernelcapi] [<c0119ef0>] run_workqueue+0x5e/0x8d [<c399326c>] recv_handler+0x0/0x5f [kernelcapi] [<c0119f93>] worker_thread+0x0/0x10b [<c011a06e>] worker_thread+0xdb/0x10b [<c010c998>] default_wake_function+0x0/0xc [<c011c399>] kthread+0x90/0xbc [<c011c309>] kthread+0x0/0xbc [<c0100a65>] kernel_thread_helper+0x5/0xb Code: 7e 02 89 ee 89 f0 5a f7 d0 c1 f8 1f 5b 21 f0 5e 5f 5d c3 56 53 8b 48 50 89 d6 89 c3 8b 11 eb 2f 66 39 71 08 75 25 8b 41 04 8b 11 <89> 10 89 42 04 c7 01 00 01 10 00 89 c8 c7 41 04 00 02 20 00 e8 The interresting part of it is the "virtual address 00200200", which is LIST_POISON2. I thought about some race condition, but as this is an UP system, it leads to questions on how it can happen. If we look at EFLAGS: 00010202, we see that interrupts are enabled at the time of the crash (eflags & 0x200). Finally, I don't understand all the capi code, but I think that handle_minor_send() is racing somehow against capi_recv_message(), which call both capiminor_del_ack(). So if an IRQ occurs in the middle of capiminor_del_ack() and another instance of it is invoked, it leads to linked list corruption. I came up with the following patch. With this, I could not reproduce the crash anymore. Clearly, this is not the correct fix for the issue. As this seems to be some locking issue, there might be more locking issues in that code. For example, doesn't the whole struct capiminor have to be locked somehow? Cc: Carsten Paeth <calle@calle.de> Cc: Kai Germaschewski <kai.germaschewski@gmx.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Notify page fault call chainAnil S Keshavamurthy
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>
2006-06-26[PATCH] Kprobes registers for notify page faultAnil S Keshavamurthy
Kprobes now registers for page fault notifications. Signed-off-by: Anil S Keshavamurthy <anil.s.keshavmurthy@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Notify page fault call chain for sparc64Anil S Keshavamurthy
Overloading of page fault notification with the notify_die() has performance issues(since the only interested components for page fault is kprobes and/or kdb) and hence this patch introduces the new notifier call chain exclusively for page fault notifications their by avoiding notifying unnecessary components in the do_page_fault() code path. 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>
2006-06-26[PATCH] Notify page fault call chain for powerpcAnil S Keshavamurthy
Overloading of page fault notification with the notify_die() has performance issues(since the only interested components for page fault is kprobes and/or kdb) and hence this patch introduces the new notifier call chain exclusively for page fault notifications their by avoiding notifying unnecessary components in the do_page_fault() code path. 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>
2006-06-26[PATCH] Notify page fault call chain for ia64Anil S Keshavamurthy
Overloading of page fault notification with the notify_die() has performance issues(since the only interested components for page fault is kprobes and/or kdb) and hence this patch introduces the new notifier call chain exclusively for page fault notifications their by avoiding notifying unnecessary components in the do_page_fault() code path. 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>
2006-06-26[PATCH] Notify page fault call chain for i386Anil S Keshavamurthy
Overloading of page fault notification with the notify_die() has performance issues(since the only interested components for page fault is kprobes and/or kdb) and hence this patch introduces the new notifier call chain exclusively for page fault notifications their by avoiding notifying unnecessary components in the do_page_fault() code path. 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>
2006-06-26[PATCH] Notify page fault call chain for x86_64Anil S Keshavamurthy
Currently in the do_page_fault() code path, we call notify_die(DIE_PAGE_FAULT, ...) to notify the page fault. Since notify_die() is highly overloaded, this page fault notification is currently being sent to all the components registered with register_die_notification() which uses the same die_chain to loop for all the registered components which is unnecessary. In order to optimize the do_page_fault() code path, this critical page fault notification is now moved to different call chain and the test results showed great improvements. And the kprobes which is interested in this notifications, now registers onto this new call chain only when it need to, i.e Kprobes now registers for page fault notification only when their are an active probes and unregisters from this page fault notification when no probes are active. I have incorporated all the feedback given by Ananth and Keith and everyone, and thanks for all the review feedback. This patch: Overloading of page fault notification with the notify_die() has performance issues(since the only interested components for page fault is kprobes and/or kdb) and hence this patch introduces the new notifier call chain exclusively for page fault notifications their by avoiding notifying unnecessary components in the do_page_fault() code path. 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>
2006-06-26[PATCH] Kprobe: multi kprobe posthandler for boostermao, bibo
If there are multi kprobes on the same probepoint, there will be one extra aggr_kprobe on the head of kprobe list. The aggr_kprobe has aggr_post_handler/aggr_break_handler whether the other kprobe post_hander/break_handler is NULL or not. This patch modifies this, only when there is one or more kprobe in the list whose post_handler is not NULL, post_handler of aggr_kprobe will be set as aggr_post_handler. [soshima@redhat.com: !CONFIG_PREEMPT fix] Signed-off-by: bibo, mao <bibo.mao@intel.com> Cc: Masami Hiramatsu <hiramatu@sdl.hitachi.co.jp> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: "Keshavamurthy, Anil S" <anil.s.keshavamurthy@intel.com> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Yumiko Sugita <sugita@sdl.hitachi.co.jp> Cc: Hideo Aoki <haoki@redhat.com> Signed-off-by: Satoshi Oshima <soshima@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] kprobe: boost 2byte-opcodes on i386Masami Hiramatsu
Previous kprobe-booster patch has not handled any 2byte opcodes and prefixes. I checked whole IA32 opcode map and classified it. This patch enables kprobe to boost those 2byte opcodes and prefixes. Signed-off-by: Masami Hiramatsu <hiramatu@sdl.hitachi.co.jp> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: "Keshavamurthy, Anil S" <anil.s.keshavamurthy@intel.com> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Yumiko Sugita <sugita@sdl.hitachi.co.jp> Cc: Satoshi Oshima <soshima@redhat.com> Cc: Hideo Aoki <haoki@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] GTOD: add scx200 HRT clocksourceJim Cromie
Add a GTOD clocksource driver based on the Geode SCx200's Hi-Res Timer. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] fix and optimize clock source updateRoman Zippel
This fixes the clock source updates in update_wall_time() to correctly track the time coming in via current_tick_length(). Optimize the fast paths to be as short as possible to keep the overhead low. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Acked-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] time: fix time going backward w/ clock=pitjohn stultz
Here is the PIT fix against the TOD patches that Tim pointed out. Many thanks to Tim for hunting this down. Cc: Tim Mann <mann@vmware.com> Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] generic-time: add macro to simplify/hide mask constantsJim Cromie
Add a CLOCKSOURCE_MASK macro to simplify initializing the mask for a struct clocksource, and use it to replace literal mask constants in the various clocksource drivers. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Acked-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] make pmtmr_ioport __read_mostlyAndreas Mohr
- written on init only, accessed for every timer read --> __read_mostly - fix broken sentence Signed-off-by: Andreas Mohr <andi@lisas.de> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] time: rename clocksource functionsjohn stultz
As suggested by Roman Zippel, change clocksource functions to use clocksource_xyz rather then xyz_clocksource to avoid polluting the namespace. Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Time: i386 Clocksource Driversjohn stultz
Implement the time sources for i386 (acpi_pm, cyclone, hpet, pit, and tsc). With this patch, the conversion of the i386 arch to the generic timekeeping code should be complete. The patch should be fairly straight forward, only adding the new clocksources. [hirofumi@mail.parknet.co.jp: acpi_pm cleanup] Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Time: i386 Conversion - part 4: Remove Old timer_opts Codejohn stultz
Remove the old timers/timer_opts infrastructure which has been disabled. It is a fairly straightforward set of deletions Note that this does not provide any i386 clocksources, so you will only have the jiffies clocksource. To get full replacements for the code being removed here, the timeofday-clocks-i386 patch will be needed. Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Time: i386 Conversion - part 3: Enable Generic Timekeepingjohn stultz
This converts the i386 arch to use the generic timeofday subsystem. It enabled the GENERIC_TIME option, disables the timer_opts code and other arch specific timekeeping code and reworks the delay code. While this patch enables the generic timekeeping, please note that this patch does not provide any i386 clocksource. Thus only the jiffies clocksource will be available. To get full replacements for the code being disabled here, the timeofday-clocks-i386 patch will needed. Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Time: i386 Conversion - part 2: Rework TSC Supportjohn stultz
As part of the i386 conversion to the generic timekeeping infrastructure, this introduces a new tsc.c file. The code in this file replaces the TSC initialization, management and access code currently in timer_tsc.c (which will be removed) that we want to preserve. The code also introduces the following functionality: o tsc_khz: like cpu_khz but stores the TSC frequency on systems that do not change TSC frequency w/ CPU frequency o check/mark_tsc_unstable: accessor/modifier flag for TSC timekeeping usability o minor cleanups to calibration math. This patch also includes a one line __cpuinitdata fix from Zwane Mwaikambo. Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Time: i386 Conversion - part 1: Move timer_pit.c to i8253.cjohn stultz
A simple cleanup for the i386 arch in preparation of moving to the generic timeofday infrastructure. It simply moves the PIT initialization code, locks, and other code we want to keep from some code from timer_pit.c (which will be removed) to i8253.c. Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] hangcheck: remove monotomic_clock on x86Andrew Morton
John's about to nuke x86's monotonic clock without grepping for it first. The patch lamely borrows the ppc64 code for x86. hangcheck-timer shouldn't be doing it this way a) HAVE_MONOTONIC should be CONFIG_MONOTONIC_CLOCK and it should be defined in arch/xxx/Kconfig. b) That ifdef tangle shouldn't be in hangcheck-timer.c. It should be using arch-provided helper functions, which CONFIG_MONOTONIC_CLOCK-enabling architectures implement in arch/something.c Cc: john stultz <johnstul@us.ibm.com> Acked-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Time: Introduce arch generic time accessorsjohn stultz
Introduces clocksource switching code and the arch generic time accessor functions that use the clocksource infrastructure. Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Time: Use clocksource abstraction for NTP adjustmentsjohn stultz
Instead of incrementing xtime by tick_nsec + ntp adjustments, use the clocksource abstraction to increment and scale time. Using the clocksource abstraction allows other clocksources to be used consistently in the face of late or lost ticks, while preserving the existing behavior via the jiffies clocksource. This removes the need to keep time_phase adjustments as we just use the current_tick_length() function as the NTP interface and accumulate time using shifted nanoseconds. The basics of this design was by Roman Zippel, however it is my own interpretation and implementation, so the credit should go to him and the blame to me. Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Time: Let user request precision from current_tick_length()john stultz
Change the current_tick_length() function so it takes an argument which specifies how much precision to return in shifted nanoseconds. This provides a simple way to convert between NTPs internal nanoseconds shifted by (SHIFT_SCALE - 10) to other shifted nanosecond units that are used by the clocksource abstraction. Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Time: Use clocksource infrastructure for update_wall_timejohn stultz
Modify the update_wall_time function so it increments time using the clocksource abstraction instead of jiffies. Since the only clocksource driver currently provided is the jiffies clocksource, this should result in no functional change. Additionally, a timekeeping_init and timekeeping_resume function has been added to initialize and maintain some of the new timekeping state. [hirofumi@mail.parknet.co.jp: fixlet] Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Time: Clocksource Infrastructurejohn stultz
This introduces the clocksource management infrastructure. A clocksource is a driver-like architecture generic abstraction of a free-running counter. This code defines the clocksource structure, and provides management code for registering, selecting, accessing and scaling clocksources. Additionally, this includes the trivial jiffies clocksource, a lowest common denominator clocksource, provided mainly for use as an example. [hirofumi@mail.parknet.co.jp: Don't enable IRQ too early] Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] ext3: Add "-o bh" optionBadari Pulavarty
This patch adds "-o bh" option to force use of buffer_heads. This option is needed when we make "nobh" as default - and if we run into problems. Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Add bcm43xx HW RNG supportMichael Buesch
Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Add TI OMAP CPU family HW RNG driverMichael Buesch
Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Add ixp4xx HW RNG driverMichael Buesch
Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Add VIA HW RNG driverMichael Buesch
Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Add Geode HW RNG driverMichael Buesch
Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Add AMD HW RNG driverMichael Buesch
Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Add Intel HW RNG driverMichael Buesch
Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Add new generic HW RNG coreMichael Buesch
Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] Remove old HW RNG supportMichael Buesch
This patch series replaces the old non-generic Hardware Random Number Generator support by a fully generic RNG API. This makes it possible to register additional RNGs from modules. With this patch series applied, Laptops with a bcm43xx chip (PowerBook) have a HW RNG available now. Additionally two new RNG drivers are added for the "ixp4xx" and "omap" devices. (Written by Deepak Saxena). This patch series includes the old patches by Deepak Saxena. The old x86-rng driver has beed split. The userspace RNG daemon can later be updated to select the RNG through /sys/class/misc/hw_random/ for convenience. For now it is sufficient to use cat and echo -n on the sysfs attributes. Signed-off-by: Michael Buesch <mb@bu3sch.de> Acked-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] reiserfs: remove reiserfs_aio_write()Alexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: <reiserfs-dev@namesys.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] keys: add a way to store the appropriate context for newly-created keysMichael LeMay
Add a /proc/<pid>/attr/keycreate entry that stores the appropriate context for newly-created keys. Modify the selinux_key_alloc hook to make use of the new entry. Update the flask headers to include a new "setkeycreate" permission for processes. Update the flask headers to include a new "create" permission for keys. Use the create permission to restrict which SIDs each task can assign to newly-created keys. Add a new parameter to the security hook "security_key_alloc" to indicate whether it is being invoked by the kernel, or from userspace. If it is being invoked by the kernel, the security hook should never fail. Update the documentation to reflect these changes. Signed-off-by: Michael LeMay <mdlemay@epoch.ncsc.mil> Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] keys: restrict contents of /proc/keys to Viewable keysMichael LeMay
Restrict /proc/keys such that only those keys to which the current task is granted View permission are presented. The documentation is also updated to reflect these changes. Signed-off-by: Michael LeMay <mdlemay@epoch.ncsc.mil> Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] keys: allocate key serial numbers randomlyMichael LeMay
Cause key_alloc_serial() to generate key serial numbers randomly rather than in linear sequence. Using an linear sequence permits a covert communication channel to be established, in which one process can communicate with another by creating or not creating new keys within a certain timeframe. The second process can probe for the expected next key serial number and judge its existence by the error returned. This is a problem as the serial number namespace is globally shared between all tasks, regardless of their context. For more information on this topic, this old TCSEC guide is recommended: http://www.radium.ncsc.mil/tpep/library/rainbow/NCSC-TG-030.html Signed-off-by: Michael LeMay <mdlemay@epoch.ncsc.mil> Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] keys: let keyctl_chown() change a key's ownerFredrik Tolf
Let keyctl_chown() change a key's owner, including attempting to transfer the quota burden to the new user. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] keys: discard the contents of a key on revocationDavid Howells
Cause the keys linked to a keyring to be unlinked from it when revoked and it causes the data attached to a user-defined key to be discarded when revoked. This frees up most of the quota a key occupied at that point, rather than waiting for the key to actually be destroyed. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] keys: sort out key quota systemDavid Howells
Add the ability for key creation to overrun the user's quota in some circumstances - notably when a session keyring is created and assigned to a process that didn't previously have one. This means it's still possible to log in, should PAM require the creation of a new session keyring, and fix an overburdened key quota. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>