- 13 Apr, 2009 1 commit
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Luis Henriques authored
Trivial fix on columns alignment in /proc/interrupts file. Signed-off-by:
Luis Henriques <henrix@sapo.pt> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090413192449.GA3920@hades.domain.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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- 09 Apr, 2009 7 commits
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Peter Zijlstra authored
Impact: fix perf-report output for /home mounted binaries, etc. dentry_path() only provide path-names up to the mount root, which is unsuited for out purpose, use d_path() instead. Signed-off-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> LKML-Reference: <20090409085524.601794134@chello.nl> Signed-off-by:
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Peter Zijlstra authored
Impact: add sysctl for paranoid/relaxed perfcounters policy Allow the use of system wide perf counters to everybody, but provide a sysctl to disable it for the paranoid security minded. Signed-off-by:
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Peter Zijlstra authored
Impact: performance optimization The mmap/comm tracking code does quite a lot of work before it discovers there's no interest in it, avoid that by keeping a counter. Signed-off-by:
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Ingo Molnar authored
It's handier than an <unknown> entry. Also replace the kernel/user column with a more compact version: 0.52 cc1 [k] page_fault 0.57 :0 [k] _spin_lock 0.59 :7506 [.] <unknown> 0.69 as [.] /usr/bin/as: <unknown> 0.76 cc1 [.] /lib64/libc-2.8.so: _int_free 0.92 cc1 [k] clear_page_c 1.00 :7465 [.] <unknown> 1.43 cc1 [.] /lib64/libc-2.8.so: memset 1.86 cc1 [.] /lib64/libc-2.8.so: _int_malloc 70.33 cc1 [.] /usr/libexec/gcc/x86_64-redhat-linux/4.3.2/cc1: <unknown> Signed-off-by: -
Ingo Molnar authored
strlen() does not include the \0. Signed-off-by: -
Paul Mackerras authored
Impact: fix potential deadlocks on powerpc Now that the core is using in_nmi() (added in e30e08f6, "perf_counter: fix NMI race in task clock"), we need the powerpc perf_counter_interrupt to call nmi_enter() and nmi_exit() in those cases where the interrupt happens when interrupts are soft-disabled. If interrupts were soft-enabled, we can treat it as a regular interrupt and do irq_enter/irq_exit around the whole routine. This lets us get rid of the test_perf_counter_pending() call at the end of perf_counter_interrupt, thus simplifying things a little. Signed-off-by:
Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <18909.31952.873098.336615@cargo.ozlabs.ibm.com> Signed-off-by:
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Paul Mackerras authored
This adds an entry in MAINTAINERS for the perf_counter subsystem. Signed-off-by:
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- 08 Apr, 2009 13 commits
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Peter Zijlstra authored
Paul suggested we allow for data addresses to be recorded along with the traditional IPs as power can provide these. For now, only the software pagefault events provide data addresses, but in the future power might as well for some events. x86 doesn't seem capable of providing this atm. Signed-off-by:
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Peter Zijlstra authored
Move PERF_RECORD_TIME so that all the fixed length items come before the variable length ones. Signed-off-by:
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Peter Zijlstra authored
# perf-record make -j4 kernel/ # perf-report | tail -15 0.39 cc1 [kernel] lock_acquired 0.42 cc1 [kernel] lock_acquire 0.51 cc1 [ user ] /lib64/libc-2.8.90.so: _int_free 0.51 as [kernel] clear_page_c 0.53 cc1 [ user ] /lib64/libc-2.8.90.so: memcpy 0.56 cc1 [ user ] /lib64/libc-2.8.90.so: _IO_vfprintf 0.63 cc1 [kernel] lock_release 0.67 cc1 [ user ] /lib64/libc-2.8.90.so: strlen 0.68 cc1 [kernel] debug_smp_processor_id 1.38 cc1 [ user ] /lib64/libc-2.8.90.so: _int_malloc 1.55 cc1 [ user ] /lib64/libc-2.8.90.so: memset 1.77 cc1 [kernel] __lock_acquire 1.88 cc1 [kernel] clear_page_c 3.61 as [ user ] /usr/bin/as: <unknown> 59.16 cc1 [ user ] /usr/libexec/gcc/x86_64-redhat-linux/4.3.2/cc1: <unknown> Signed-off-by:
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Peter Zijlstra authored
Similar to the mmap data stream, add one that tracks the task COMM field, so that the userspace reporting knows what to call a task. Signed-off-by:
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Peter Zijlstra authored
Add a few comments because I was forgetting what field what for what functionality. Signed-off-by:
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Peter Zijlstra authored
Update kerneltop to use PERF_EVENT_MISC_OVERFLOW Signed-off-by:
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Peter Zijlstra authored
Push the PERF_EVENT_COUNTER_OVERFLOW bit into the misc field so that we can have the full 32bit for PERF_RECORD_ bits. Signed-off-by:
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Peter Zijlstra authored
Limit the size of each record to 64k (or should we count in multiples of u64 and have a 512K limit?), this gives 16 bits or spare room in the header, which we can use for misc bits, so as to not have to grow the record with u64 every time we have a few bits to report. Signed-off-by:
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Peter Zijlstra authored
We should not be updating ctx->time from NMI context, work around that. Signed-off-by:
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Hidetoshi Seto authored
Now /proc/interrupts of tip tree has new counters: CNT: Performance counter interrupts Format change of output, as like that by commit: commit 7a81d9a7 x86: smarten /proc/interrupts output should be applied to these new counters too. Signed-off-by:
Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Cc: Jan Beulich <jbeulich@novell.com> LKML-Reference: <49C98DEA.8060208@jp.fujitsu.com> Signed-off-by:
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Paul Mackerras authored
Impact: enable access to hardware feature POWER processors have the ability to "mark" a subset of the instructions and provide more detailed information on what happens to the marked instructions as they flow through the pipeline. This marking is enabled by the "sample enable" bit in MMCRA, and there are synchronization requirements around setting and clearing the bit. This adds logic to the processor-specific back-ends so that they know which events relate to marked instructions and set the sampling enable bit if any event that we want to put on the PMU is a marked instruction event. It also adds logic to the generic powerpc code to do the necessary synchronization if that bit is set. Signed-off-by:
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Paul Mackerras authored
Commit 4af4998b ("perf_counter: rework context time") changed struct perf_counter_context to have a 'time' field instead of a 'time_now' field, but neglected to fix the place in the powerpc perf_counter.c where the time_now field was accessed. This fixes it. Signed-off-by:
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Ingo Molnar authored
Conflicts: arch/powerpc/include/asm/systbl.h arch/powerpc/include/asm/unistd.h include/linux/init_task.h Merge reason: the conflicts are non-trivial: PowerPC placement of sys_perf_counter_open has to be mixed with the new preadv/pwrite syscalls. Signed-off-by:
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- 07 Apr, 2009 19 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tipLinus Torvalds authored
* 'core/softlockup' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: softlockup: make DETECT_HUNG_TASK default depend on DETECT_SOFTLOCKUP softlockup: move 'one' to the softlockup section in sysctl.c softlockup: ensure the task has been switched out once softlockup: remove timestamp checking from hung_task softlockup: convert read_lock in hung_task to rcu_read_lock softlockup: check all tasks in hung_task softlockup: remove unused definition for spawn_softlockup_task softlockup: fix potential race in hung_task when resetting timeout softlockup: fix to allow compiling with !DETECT_HUNG_TASK softlockup: decouple hung tasks check from softlockup detection
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Linus Torvalds authored
Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: branch tracer, intel-iommu: fix build with CONFIG_BRANCH_TRACER=y branch tracer: Fix for enabling branch profiling makes sparse unusable ftrace: Correct a text align for event format output Update /debug/tracing/README tracing/ftrace: alloc the started cpumask for the trace file tracing, x86: remove duplicated #include ftrace: Add check of sched_stopped for probe_sched_wakeup function-graph: add proper initialization for init task tracing/ftrace: fix missing include string.h tracing: fix incorrect return type of ns2usecs() tracing: remove CALLER_ADDR2 from wakeup tracer blktrace: fix pdu_len when tracing packet command requests blktrace: small cleanup in blk_msg_write() blktrace: NUL-terminate user space messages tracing: move scripts/trace/power.pl to scripts/tracing/power.pl
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tipLinus Torvalds authored
* 'irq/threaded' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: genirq: fix devres.o build for GENERIC_HARDIRQS=n genirq: provide old request_irq() for CONFIG_GENERIC_HARDIRQ=n genirq: threaded irq handlers review fixups genirq: add support for threaded interrupts to devres genirq: add threaded interrupt handler support
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Trond Myklebust authored
Commit c2ec175c ("mm: page_mkwrite change prototype to match fault") exposed a bug in the NFS implementation of page_mkwrite. We should be returning 0 on success... Signed-off-by:
Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI: pci_slot: grab refcount on slot's bus PCI Hotplug: acpiphp: grab refcount on p2p subordinate bus PCI: allow PCI core hotplug to remove PCI root bus PCI: Fix oops in pci_vpd_truncate PCI: don't corrupt enable_cnt when doing manual resource alignment PCI: annotate pci_rescan_bus as __ref, not __devinit PCI-IOV: fix missing kernel-doc PCI: Setup disabled bridges even if buses are added PCI: SR-IOV quirk for Intel 82576 NIC
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git://git.kernel.dk/linux-2.6-blockLinus Torvalds authored
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: loop: mutex already unlocked in loop_clr_fd() cfq-iosched: don't let idling interfere with plugging block: remove unused REQ_UNPLUG cfq-iosched: kill two unused cfqq flags cfq-iosched: change dispatch logic to deal with single requests at the time mflash: initial support cciss: change to discover first memory BAR cciss: kernel scan thread for MSA2012 cciss: fix residual count for block pc requests block: fix inconsistency in I/O stat accounting code block: elevator quiescing helpers
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Linus Torvalds authored
The code that enables branch tracing for all (non-constant) branches plays games with the preprocessor and #define's the C 'if ()' construct to do tracing. That's all fine, but it fails for some unusual but valid C code that is sometimes used in macros, notably by the intel-iommu code: if (i=drhd->iommu, drhd->ignored) .. because now the preprocessor complains about multiple arguments to the 'if' macro. So make the macro expansion of this particularly horrid trick use varargs, and handle the case of comma-expressions in if-statements. Use another macro to do it cleanly in just one place. This replaces a patch by David (and acked by Steven) that did this all inside that one already-too-horrid macro. Tested-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound-2.6Linus Torvalds authored
* 'for-2.6.30' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound-2.6: ASoC: TWL4030: Compillation error fix
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (36 commits) ALSA: hda - Add VREF powerdown sequence for another board ALSA: oss - volume control for CSWITCH and CROUTE ALSA: hda - add missing comma in ad1884_slave_vols sound: usb-audio: allow period sizes less than 1 ms sound: usb-audio: save data packet interval in audioformat structure sound: usb-audio: remove check_hw_params_convention() sound: usb-audio: show sample format width in proc file ASoC: fsl_dma: Pass the proper device for dma mapping routines ASoC: Fix null dereference in ak4535_remove() ALSA: hda - enable SPDIF output for Intel DX58SO board ALSA: snd-atmel-abdac: increase periods_min to 6 instead of 4 ALSA: snd-atmel-abdac: replace bus_id with dev_name() ALSA: snd-atmel-ac97c: replace bus_id with dev_name() ALSA: snd-atmel-ac97c: cleanup registers when removing driver ALSA: snd-atmel-ac97c: do a proper reset of the external codec ALSA: snd-atmel-ac97c: enable interrupts to catch events for error reporting ALSA: snd-atmel-ac97c: set correct size for buffer hardware parameter ALSA: snd-atmel-ac97c: do not overwrite OCA and ICA when assigning channels ALSA: snd-atmel-ac97c: remove dead break statements after return in switch case ALSA: snd-atmel-ac97c: cleanup register definitions ...
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git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-devLinus Torvalds authored
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: sata_mv: shorten register names sata_mv: workaround errata SATA#13 sata_mv: cosmetic renames sata_mv: workaround errata SATA#26 sata_mv: workaround errata PCI#7 sata_mv: replace 0x1f with ATA_PIO4 (v2) sata_mv: fix irq mask races sata_mv: revert SoC irq breakage libata: ahci enclosure management bios workaround ata: Add TRIM infrastructure ata_piix: VGN-BX297XP wants the controller power up on suspend libata: Remove some redundant casts from pata_octeon_cf.c pata_artop: typo
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git://aeryn.fluff.org.uk/bjdooks/linuxLinus Torvalds authored
* 'i2c-for-2630-v2' of git://aeryn.fluff.org.uk/bjdooks/linux: i2c: imx: Make disable_delay a per-device variable i2c: xtensa s6000 i2c driver powerpc/85xx: i2c-mpc: use new I2C bindings for the Socates board i2c: i2c-mpc: make I2C bus speed configurable i2c: i2c-mpc: use dev based printout function i2c: i2c-mpc: various coding style fixes i2c: imx: Add missing request_mem_region in probe() i2c: i2c-s3c2410: Initialise Samsung I2C controller early i2c-s3c2410: Simplify bus frequency calculation i2c-s3c2410: sda_delay should be in ns, not clock ticks i2c: iMX/MXC support
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git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds authored
* 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: hwmon: Add Asus ATK0110 support hwmon: (lm95241) Convert to new-style i2c driver
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Alan Cox authored
PCI parallel port devices can IRQ share so we should stop them hogging the line and making a mess on modern PC systems. We know the sharing side works as the PCMCIA driver has shared the parallel port IRQ for some time. Signed-off-by:
Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Breno Leitao authored
Here are some cleanups, mainly removing unused variables and silly declarations. Signed-off-by:
Breno Leitao <leitao@linux.vnet.ibm.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Mike Frysinger authored
Signed-off-by:
Mike Frysinger <vapier.adi@gmail.com> Signed-off-by:
Bryan Wu <cooloney@kernel.org> Signed-off-by:
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Mike Frysinger authored
Depend on KGDB_SERIAL_CONSOLE being set to N rather than !Y, since it can be built as a module. Signed-off-by:
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Mike Frysinger authored
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Sonic Zhang authored
Both software emulated and hardware based CTS and RTS are enabled in serial driver. The CTS RTS PIN connection on BF548 UART port is defined as a modem device not as a host device. In order to test it under Linux, please nake a cross UART cable to exchange CTS and RTS signal. Signed-off-by:
Sonic Zhang <sonic.zhang@analog.com> Signed-off-by:
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