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2010-02-27percpu: Add __percpu sparse annotations to hw_breakpointTejun Heo
Add __percpu sparse annotations to hw_breakpoint. These annotations are to make sparse consider percpu variables to be in a different address space and warn if accessed without going through percpu accessors. This patch doesn't affect normal builds. In kernel/hw_breakpoint.c, per_cpu(nr_task_bp_pinned, cpu)'s will trigger spurious noderef related warnings from sparse. Changing it to &per_cpu(nr_task_bp_pinned[0], cpu) will work around the problem but deemed to ugly by the maintainer. Leave it alone until better solution can be found. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: K.Prasad <prasad@linux.vnet.ibm.com> LKML-Reference: <4B7B4B7A.9050902@kernel.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2010-02-27Merge commit 'v2.6.33' into perf/coreFrederic Weisbecker
Merge reason: __percpu annotations need the corresponding sparse address space definition upstream. Conflicts: tools/perf/util/probe-event.c (trivial)
2010-02-26perf_event, amd: Fix spinlock initializationPeter Zijlstra
Avoid kernels from exploding on AMD machines when they have any lock debugging bits enabled. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-26perf_event: Fix preempt warning in perf_clock()Peter Zijlstra
A recent commit introduced a preemption warning for perf_clock(), use raw_smp_processor_id() to avoid this, it really doesn't matter which cpu we use here. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1267198583.22519.684.camel@laptop> Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-26perf tools: Flush maps on COMM eventsDavid S. Miller
Even though we don't register the counters until the child is right about to exec(), we're still going to get at least a few events while the fork()'d child is still executing 'perf' and in particular we're going to get the MMAP events. We can't distinguish the ones in the newly executed process because the PID will be the same. One way to solve this would be to have a PERF_RECORD_EXEC event, and when this is seen 'perf' can flush it's map cache. We can't use PERF_RECORD_COMM since that's generated by other things, not just exec(). Actually, thinking about it some more, using PERF_RECORD_COMM might be a good enough approximation. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1267196914-16238-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-26perf_events, x86: Split PMU definitions into separate filesPeter Zijlstra
Split amd,p6,intel into separate files so that we can easily deal with CONFIG_CPU_SUP_* things, needed to make things build now that perf_event.c relies on symbols from amd.c Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-26perf annotate: Handle samples not at objdump output addr boundariesArnaldo Carvalho de Melo
Without this patch we get this for need_resched: [root@mica ~]# perf annotate need_resched ------------------------------------------------ Percent | Source code & Disassembly of vmlinux ------------------------------------------------ : : : Disassembly of section .text: : : ffffffff810095ed <need_resched>: : return (state & TASK_INTERRUPTIBLE) || __fatal_signal_pending(p); : } : : static inline int need_resched(void) : { 0.00 : ffffffff810095ed: 55 push %rbp : return unlikely(test_thread_flag(TIF_NEED_RESCHED)); 0.00 : ffffffff810095ee: be 03 00 00 00 mov $0x3,%esi : : static inline struct thread_info *current_thread_info(void) : { : struct thread_info *ti; : ti = (void *)(percpu_read_stable(kernel_stack) + 0.00 : ffffffff810095f3: 65 48 8b 3c 25 48 b5 mov %gs:0xb548,%rdi 0.00 : ffffffff810095fa: 00 00 : return (state & TASK_INTERRUPTIBLE) || __fatal_signal_pending(p); : } : : static inline int need_resched(void) : { 0.00 : ffffffff810095fc: 48 89 e5 mov %rsp,%rbp : return unlikely(test_thread_flag(TIF_NEED_RESCHED)); 0.00 : ffffffff810095ff: 48 81 ef d8 1f 00 00 sub $0x1fd8,%rdi 0.00 : ffffffff81009606: e8 9d ff ff ff callq ffffffff810095a8 <test_ti_thread_flag> : } 0.00 : ffffffff8100960b: c9 leaveq 0.00 : ffffffff8100960c: 85 c0 test %eax,%eax 0.00 : ffffffff8100960e: 0f 95 c0 setne %al 0.00 : ffffffff81009611: 0f b6 c0 movzbl %al,%eax : Disassembly of section .vsyscall_0: : Disassembly of section .vsyscall_fn: : Disassembly of section .vsyscall_1: : Disassembly of section .vsyscall_2: : Disassembly of section .init.text: : Disassembly of section .altinstr_replacement: : Disassembly of section .exit.text: [root@mica ~]# But from the 'perf report' result we know that there are hits for need_resched on a 4 way machine mostly doing nothing, so after adding code to show what is in each hist offset and collapsing IP hits for what happens between objdump lines we get, for the same perf.data file: [root@mica ~]# perf annotate -v need_resched ------------------------------------------------ Percent | Source code & Disassembly of vmlinux ------------------------------------------------ : : : Disassembly of section .text: : : ffffffff810095ed <need_resched>: : return (state & TASK_INTERRUPTIBLE) || __fatal_signal_pending(p); : } : : static inline int need_resched(void) : { 0.00 : ffffffff810095ed: 55 push %rbp : return unlikely(test_thread_flag(TIF_NEED_RESCHED)); 52.78 : ffffffff810095ee: be 03 00 00 00 mov $0x3,%esi : : static inline struct thread_info *current_thread_info(void) : { : struct thread_info *ti; : ti = (void *)(percpu_read_stable(kernel_stack) + 0.00 : ffffffff810095f3: 65 48 8b 3c 25 48 b5 mov %gs:0xb548,%rdi 0.00 : ffffffff810095fa: 00 00 : return (state & TASK_INTERRUPTIBLE) || __fatal_signal_pending(p); : } : : static inline int need_resched(void) : { 0.00 : ffffffff810095fc: 48 89 e5 mov %rsp,%rbp : return unlikely(test_thread_flag(TIF_NEED_RESCHED)); 9.72 : ffffffff810095ff: 48 81 ef d8 1f 00 00 sub $0x1fd8,%rdi 0.00 : ffffffff81009606: e8 9d ff ff ff callq ffffffff810095a8 <test_ti_thread_flag> : } 0.00 : ffffffff8100960b: c9 leaveq 0.00 : ffffffff8100960c: 85 c0 test %eax,%eax 37.50 : ffffffff8100960e: 0f 95 c0 setne %al 0.00 : ffffffff81009611: 0f b6 c0 movzbl %al,%eax : Disassembly of section .vsyscall_0: : Disassembly of section .vsyscall_fn: : Disassembly of section .vsyscall_1: : Disassembly of section .vsyscall_2: : Disassembly of section .init.text: : Disassembly of section .altinstr_replacement: : Disassembly of section .exit.text: [root@mica ~]# And now 'perf annotate -v', verbose mode, will show the hits per precise IP, so that one can make sense of the attribution to each objdumop line: [root@mica ~]# perf annotate -v need_resched Looking at the vmlinux_path (5 entries long) Using /lib/modules/2.6.33-rc8-tip-00784-g3471df5-dirty/build/vmlinux for symbols annotate_sym: filename=/lib/modules/2.6.33-rc8-tip-00784-g3471df5-dirty/build/vmlinux, sym=need_resched, start=0xffffffff810095ed, end=0xffffffff81009614 ------------------------------------------------ Percent | Source code & Disassembly of vmlinux ------------------------------------------------ ffffffff810095f1: 152 ffffffff81009603: 28 ffffffff8100960f: 55 ffffffff81009610: 53 h->sum: 288 <SNIP same annotation> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Miller <davem@davemloft.net> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1267194194-15670-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-26perf_events, x86: Remove superflous MSR writesPeter Zijlstra
We re-program the event control register every time we reset the count, this appears to be superflous, hence remove it. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arjan van de Ven <arjan@linux.intel.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-26perf_events: Simplify code by removing cpu argument to hw_perf_group_sched_in()Peter Zijlstra
Since the cpu argument to hw_perf_group_sched_in() is always smp_processor_id(), simplify the code a little by removing this argument and using the current cpu where needed. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: David Miller <davem@davemloft.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <1265890918.5396.3.camel@laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-26perf_events, x86: AMD event schedulingStephane Eranian
This patch adds correct AMD NorthBridge event scheduling. NB events are events measuring L3 cache, Hypertransport traffic. They are identified by an event code >= 0xe0. They measure events on the Northbride which is shared by all cores on a package. NB events are counted on a shared set of counters. When a NB event is programmed in a counter, the data actually comes from a shared counter. Thus, access to those counters needs to be synchronized. We implement the synchronization such that no two cores can be measuring NB events using the same counters. Thus, we maintain a per-NB allocation table. The available slot is propagated using the event_constraint structure. Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <4b703957.0702d00a.6bf2.7b7d@mx.google.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-26perf_events: Add new start/stop PMU callbacksStephane Eranian
In certain situations, the kernel may need to stop and start the same event rapidly. The current PMU callbacks do not distinguish between stop and release (i.e., stop + free the resource). Thus, a counter may be released, then it will be immediately re-acquired. Event scheduling will again take place with no guarantee to assign the same counter. On some processors, this may event yield to failure to assign the event back due to competion between cores. This patch is adding a new pair of callback to stop and restart a counter without actually release the underlying counter resource. On stop, the counter is stopped, its values saved and that's it. On start, the value is reloaded and counter is restarted (on x86, actual restart is delayed until perf_enable()). Signed-off-by: Stephane Eranian <eranian@google.com> [ added fallback to ->enable/->disable for all other PMUs fixed x86_pmu_start() to call x86_pmu.enable() merged __x86_pmu_disable into x86_pmu_stop() ] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <4b703875.0a04d00a.7896.ffffb824@mx.google.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-26perf_events: Report the MMAP pgoff value in bytesPeter Zijlstra
DaveM reported that currently perf interprets the pgoff value reported by the MMAP events as a byte range, but the kernel reports it as a page offset. Since its broken (and unusable) anyway, change the kernel behaviour (ABI) to report bytes indeed, avoiding the need for userspace to deal with PAGE_SIZE things. Reported-by: David Miller <davem@davemloft.net> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-25perf annotate: Defer allocating sym_priv->hist arrayArnaldo Carvalho de Melo
Because symbol->end is not fixed up at symbol_filter time, only after all symbols for a DSO are loaded, and that, for asm symbols, may be bogus, causing segfaults when hits happen in these symbols. Reported-by: David Miller <davem@davemloft.net> Reported-by: Anton Blanchard <anton@samba.org> Acked-by: David Miller <davem@davemloft.net> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: <stable@kernel.org> # for .33.x. Does not apply cleanly, needs backport. LKML-Reference: <20100225155740.GB8553@ghostprotocols.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-25perf symbols: Improve debugging information about symtab originsArnaldo Carvalho de Melo
Be more clear about DSO long names and tell from which file kernel symbols were obtained, all in --verbose mode: [root@mica ~]# perf report -v > /dev/null Looking at the vmlinux_path (5 entries long) Using /lib/modules/2.6.33-rc8-tip-00777-g0918527-dirty/build/vmlinux for symbols [root@mica ~]# mv /lib/modules/2.6.33-rc8-tip-00777-g0918527-dirty/build/vmlinux /tmp/dd [root@mica ~]# perf report -v > /dev/null Looking at the vmlinux_path (5 entries long) Using /proc/kallsyms for symbols [root@mica ~]# Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1266866139-6361-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-25perf top: Use a macro instead of a constant variableArnaldo Carvalho de Melo
To overcome a silly gcc warning: cc1: warnings being treated as errors builtin-top.c: In function ‘lookup_sym_source’: builtin-top.c:291: warning: not protecting local variables: variable length buffer make: *** [builtin-top.o] Error 1 make: *** Waiting for unfinished jobs.... That is emitted for this: const size_t pattern_len = BITS_PER_LONG / 4 + 2; char pattern[pattern_len + 1]; Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1266866062-6287-1-git-send-email-acme@infradead.org> [ -v2: macroify the naming style ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-25perf symbols: Check the right return variableZhang, Yanmin
In function dso__split_kallsyms(), curr_map saves the return value of map__new2. So check it instead of var map after the call returns. Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com> Acked-by: David S. Miller <davem@davemloft.net> Cc: <stable@kernel.org> # for .33.x Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <1267066851.1726.9.camel@localhost> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-25perf/scripts: Tag syscall_name helper as not yet availableFrederic Weisbecker
syscall_name() helper, which resolves a syscall arch number to its name, is not yet available as we first need to implement event injection for it to work. Remove it from the documentation or tag its references as unavailable yet. Once it's implemented, we can just revert the current patch. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Keiichi KII <k-keiichi@bx.jp.nec.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-02-25perf/scripts: Add perf-trace-python DocumentationTom Zanussi
Also small update to perf-trace-perl and perf-trace docs. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Keiichi KII <k-keiichi@bx.jp.nec.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1264580883-15324-13-git-send-email-tzanussi@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2010-02-25perf/scripts: Remove unnecessary PyTuple resizesTom Zanussi
If we know the size of a tuple in advance, there's no need to resize it - start out with the known size in the first place. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Keiichi KII <k-keiichi@bx.jp.nec.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1266822779.6426.4.camel@tropicana> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2010-02-25perf/scripts: Add syscall tracing scriptsTom Zanussi
Adds a set of scripts that aggregate system call totals and system call errors. Most are Python scripts that also test basic functionality of the new Python engine, but there's also one Perl script added for comparison and for reference in some new Documentation contained in a later patch. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Keiichi KII <k-keiichi@bx.jp.nec.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1264580883-15324-8-git-send-email-tzanussi@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2010-02-25perf/scripts: Add Python scripting engineTom Zanussi
Add base support for Python scripting to perf trace. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Keiichi KII <k-keiichi@bx.jp.nec.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1264580883-15324-6-git-send-email-tzanussi@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2010-02-24Linux 2.6.33v2.6.33Linus Torvalds
2010-02-24Merge branch 'urgent' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6 * 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6: parisc: Set PCI CLS early in boot.
2010-02-24Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Fix broken sn2 build
2010-02-24parisc: Set PCI CLS early in boot.Carlos O'Donell
Set the PCI CLS early in the boot process to prevent device failures. In pcibios_set_master use the new pci_cache_line_size instead of a hard-coded value. Signed-off-by: Carlos O'Donell <carlos@codesourcery.com> Reviewed-by: Grant Grundler <grundler@google.com> Signed-off-by: Kyle McMartin <kyle@redhat.com>
2010-02-24Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Fix out_le32() macro microblaze: Fix cache loop function for cache range
2010-02-24Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: Revert "block: improve queue_should_plug() by looking at IO depths"
2010-02-24microblaze: Fix out_le32() macroSteven J. Magnani
Trailing semicolon causes compilation involving out_le32() to fail. Signed-off-by: Steven J. Magnani <steve@digidescorp.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-02-24microblaze: Fix cache loop function for cache rangeMichal Simek
I create wrong asm code but none test shows that this part of code is wrong. I am not convinces that were good idea to create asm optimized macros for caches. The reason is that there is not optimization with previous code that's why make sense to add old code and do some benchmarking which functions are faster. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-02-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: net: bug fix for vlan + gro issue tc35815: Remove a wrong netif_wake_queue() call which triggers BUG_ON cdc_ether: new PID for Ericsson C3607w to the whitelist (resubmit) IPv6: better document max_addresses parameter MAINTAINERS: update mv643xx_eth maintenance status e1000: Fix DMA mapping error handling on RX iwlwifi: sanity check before counting number of tfds can be free iwlwifi: error checking for number of tfds in queue iwlwifi: set HT flags after channel in rxon
2010-02-23net: bug fix for vlan + gro issueAjit Khaparde
Traffic (tcp) doesnot start on a vlan interface when gro is enabled. Even the tcp handshake was not taking place. This is because, the eth_type_trans call before the netif_receive_skb in napi_gro_finish() resets the skb->dev to napi->dev from the previously set vlan netdev interface. This causes the ip_route_input to drop the incoming packet considering it as a packet coming from a martian source. I could repro this on 2.6.32.7 (stable) and 2.6.33-rc7. With this fix, the traffic starts and the test runs fine on both vlan and non-vlan interfaces. CC: Herbert Xu <herbert@gondor.apana.org.au> CC: Patrick McHardy <kaber@trash.net> Signed-off-by: Ajit Khaparde <ajitk@serverengines.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-23Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: ACPI: Be in TS_POLLING state during mwait based C-state entry ACPI: Fix regression where _PPC is not read at boot even when ignore_ppc=0 acer-wmi: Respect current backlight level when loading
2010-02-23Merge branch 'drm-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/vmwgfx: Fix queries if no dma buffer thrashing is occuring. drm/nv50: fix vram ptes on IGPs to point at stolen system memory drm/nv50: fix instmem binding on IGPs to point at stolen system memory drm/nv50: improve vram page table construction drm/nv50: more efficient clearing of gpu page table entries drm/nv50: make nv50_mem_vm_{bind,unbind} operate only on vram drm/nouveau: Fix up pre-nv17 analog load detection.
2010-02-23[IA64] Fix broken sn2 buildHedi Berriche
Revert the change made to arch/ia64/sn/kernel/setup.c by commit 204fba4aa303ea4a7bb726a539bf4a5b9e3203d0 as it breaks the build. Fixing the build the b94b08081fcecf83fa690d6c5664f6316fe72208 way breaks xpc because genksyms then fails to generate an CRC for per_cpu____sn_cnodeid_to_nasid because of limitations in the generic genksyms code. Signed-off-by: Hedi Berriche <hedi@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2010-02-23perf/scripts: Remove check-perf-trace from listed scriptsTom Zanussi
The check-perf-trace script only checks Perl functionality, and doesn't really need to be listed as as user script anyway. This only removes the '-report' shell script, so although it doesn't appear in the listing, the '-record' shell script and the check perf trace perl script itself is still available and can still be run manually as such: $ libexec/perf-core/scripts/perl/bin/check-perf-trace-record $ perf trace -s libexec/perf-core/scripts/perl/check-perf-trace.pl Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Keiichi KII <k-keiichi@bx.jp.nec.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1264580883-15324-6-git-send-email-tzanussi@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2010-02-23perf/scripts: Move Perl scripting files to scripting-engines dirTom Zanussi
Create a scripting-engines directory to contain scripting engine implementation code, in anticipation of the addition of new scripting support. Also removes trace-event-perl.h. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Keiichi KII <k-keiichi@bx.jp.nec.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1264580883-15324-5-git-send-email-tzanussi@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2010-02-23perf/scripts: Move common code out of Perl-specific filesTom Zanussi
This stuff is needed by all scripting engines; move it from the Perl engine source to a more common place. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Keiichi KII <k-keiichi@bx.jp.nec.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1264580883-15324-4-git-send-email-tzanussi@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2010-02-23perf/scripts: Fix bug in Util.pmTom Zanussi
Fix bogus calculation. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Keiichi KII <k-keiichi@bx.jp.nec.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1264580883-15324-3-git-send-email-tzanussi@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2010-02-23perf/scripts: Fix supported language listing optionTom Zanussi
'perf trace -s list' prints a list of the supported scripting languages. One problem with it is that it falls through and prints the trace as well. The use of 'list' for this also makes it easy to confuse with 'perf trace -l', used for listing available scripts. So change 'perf trace -s list' to 'perf trace -s lang' and fixes the fall-through problem. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Keiichi KII <k-keiichi@bx.jp.nec.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1264580883-15324-2-git-send-email-tzanussi@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2010-02-23Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2010-02-23tc35815: Remove a wrong netif_wake_queue() call which triggers BUG_ONAtsushi Nemoto
The netif_wake_queue() is called correctly (i.e. only on !txfull condition) from txdone routine. So Unconditional call to the netif_wake_queue() here is wrong. This might cause calling of start_xmit routine on txfull state and trigger BUG_ON. This bug does not happen when NAPI disabled. After txdone there must be at least one free tx slot. But with NAPI, this is not true anymore and the BUG_ON can hits on heavy load. In this driver NAPI was enabled on 2.6.33-rc1 so this is regression from 2.6.32 kernel. Reported-by: Ralf Roesch <ralf.roesch@rw-gmbh.de> Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-23cdc_ether: new PID for Ericsson C3607w to the whitelist (resubmit)Torgny Johansson
This patch adds a new vid/pid to the cdc_ether whitelist. Device added: - Ericsson Mobile Broadband variant C3607w Signed-off-by: Torgny Johansson <torgny.johansson@gmail.com> -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-23IPv6: better document max_addresses parameterBrian Haley
Andrew Morton wrote: >> >From ip-sysctl.txt file in kernel documentation I can see following description >> for max_addresses: >> max_addresses - INTEGER >> Number of maximum addresses per interface. 0 disables limitation. >> It is recommended not set too large value (or 0) because it would >> be too easy way to crash kernel to allow to create too much of >> autoconfigured addresses. ^^^^^^^^^^^^^^ >> If this parameter applies only for auto-configured IP addressed, please state >> it more clearly in docs or rename the parameter to show that it refers to >> auto-configuration. It did mention autoconfigured in the text, but the below makes it more obvious. More clearly document IPv6 max_addresses parameter. Signed-off-by: Brian Haley <brian.haley@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-23MAINTAINERS: update mv643xx_eth maintenance statusLennert Buytenhek
I am no longer with Marvell. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-23e1000: Fix DMA mapping error handling on RXAnton Blanchard
Check for error return from pci_map_single/pci_map_page and clean up. With this and the previous patch the driver was able to handle a significant percentage of errors (I set the fault injection rate to 10% and could still download large files at a reasonable speed). Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-23Revert "block: improve queue_should_plug() by looking at IO depths"Jens Axboe
This reverts commit fb1e75389bd06fd5987e9cda1b4e0305c782f854. "Benjamin S." <sbenni@gmx.de> reports that the patch in question causes a big drop in sequential throughput for him, dropping from 200MB/sec down to only 70MB/sec. Needs to be investigated more fully, for now lets just revert the offending commit. Conflicts: include/linux/blkdev.h Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-02-23drm/vmwgfx: Fix queries if no dma buffer thrashing is occuring.Thomas Hellstrom
Intercept query commands and apply relocations to their guest pointers. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-23Merge remote branch 'nouveau/for-airlied' of ../drm-nouveau-next into drm-linusDave Airlie
* 'nouveau/for-airlied' of ../drm-nouveau-next: drm/nv50: fix vram ptes on IGPs to point at stolen system memory drm/nv50: fix instmem binding on IGPs to point at stolen system memory drm/nv50: improve vram page table construction drm/nv50: more efficient clearing of gpu page table entries drm/nv50: make nv50_mem_vm_{bind,unbind} operate only on vram drm/nouveau: Fix up pre-nv17 analog load detection.
2010-02-23Merge branch 'pcc' into releaseLen Brown
2010-02-23Merge branches 'bugzilla-14207' and 'idle' into releaseLen Brown
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