- 21 9月, 2009 5 次提交
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由 Peter Zijlstra 提交于
Dave noticed that we leak the PMU resource reservations when we fail the hardware counter init. Reported-by: NDavid Miller <davem@davemloft.net> Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: NDavid Miller <davem@davemloft.net> LKML-Reference: <1252483487.7746.164.camel@twins> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
Tweak the output SVG to increase performance in SVG viewers by limiting the different types of font sizes and by smarter transformations on the text. At least with Inkscape this gives a notable performance improvement during zoom and scrolling. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090920181438.3a49cb93@linux.intel.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
This patch adds a command line option for timechart that allows the user to specify the width of the SVG file. This patch also makes sure that each second of recording has at least 200 units (pixels at 96 DPI) of width. This impacts recordings longer than 5 seconds; recordings shorter than 5 second will scale up to have a width of 1000 units for the whole recording (as before). Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090920181416.69570c5d@linux.intel.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
Given that scheduler latencies are the hot thing nowadays, show the duration of said latencies in the SVG in text form. In addition, if the latency is more than 10 msec, pick a brighter yellow color as a way to point these long delays out. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090920181353.796f4509@linux.intel.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
Timechart currently shows thin green lines for sending or receiving wakeups. This patch also prints (in a very small font) the name of the process that is being woken/wakes up this process. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090920181328.68baa978@linux.intel.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 20 9月, 2009 6 次提交
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由 Ian Schram 提交于
There is still some weird code in per_copy_attr(). Which supposedly checks that all bytes trailing a struct are zero. It doesn't seem to get pointer arithmetic right. Since it increments an iterating pointer by sizeof(unsigned long) rather than 1. Signed-off-by: NIan Schram <ischram@telenet.be> [ v2: clean up the messy PTR_ALIGN logic as well. ] Signed-off-by: NPeter 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> Cc: <stable@kernel.org> # for v2.6.31.x LKML-Reference: <4AB3DEE2.3030600@telenet.be> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
As per Ingo's review: use a #define rather than an open coded constant for the maximum length of a trace event for storing in the perf.data file. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Cc: fweisbec@gmail.com Cc: peterz@infradead.org Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20090919133630.10533d3e@infradead.org> [ add a few comments to nearby functions ] Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
As suggested by Ingo, add a timechart man page help text, as well as add it to the "perf help" overview. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Cc: fweisbec@gmail.com Cc: peterz@infradead.org Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20090919133604.3767fa35@infradead.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
The "end of a C state" trace point currently happens before the code runs that corrects the TSC for having stopped during idle. The result of this is that the timestamp of the end-of-C-state event is garbage on cpus where the TSC stops during idle. This patch moves the end point of the C state to after the timekeeping engine of the kernel has been corrected. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Cc: Len Brown <len.brown@intel.com> Cc: fweisbec@gmail.com Cc: peterz@infradead.org Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20090919133533.139c2a46@infradead.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
Be more consistent in the svghelper about the minimum text size by having a global #define for this. There needs to be a minimum text size in order to keep the size of the SVG file within the reach of what current SVG viewers can cope with. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Cc: fweisbec@gmail.com Cc: peterz@infradead.org Cc: Paul Mackerras <paulus@samba.org> Cc: Arjan van de Ven <arjan@infradead.org> LKML-Reference: <20090919133507.7374ef8b@infradead.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
Add a command line option to record a trace, similar to "perf sched record". Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Cc: fweisbec@gmail.com Cc: peterz@infradead.org Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20090919133442.0dc2c7f5@infradead.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 19 9月, 2009 11 次提交
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由 Arjan van de Ven 提交于
timechart is a tool to visualize what is going on in the system. The user makes a trace of what is going on with > perf record --timechart /usr/bin/some_command and then can turn the output of this into an svg file > perf timechart which then can be viewed with any SVG view; inkscape works well enough for me. The idea behind timechart is to create a "infinitely zoomable" picture; something that has high level information on a 1:1 zoom level, but which exposes more details every time you zoom into a specific area. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090912130713.6a77bbc0@infradead.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
The timechart tool writes out SVG format output; this patch adds a set of helper functions to abstract dealing with SVG from the core timechart code. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090912130613.677f0516@infradead.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
This patch converts the existing power tracer into an event tracer, so that power events (C states and frequency changes) can be tracked via "perf". This also removes the perl script that was used to demo the tracer; its functionality is being replaced entirely with timechart. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090912130542.6d314860@infradead.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
Add a sample_event type to the event_union so that raw samples can be processed easily. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090912130511.411434b5@infradead.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
timechart needs to add a "callback" type command line argument that does not take arguments. This patch adds the parse-options.h infrastructure to make this possible. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090912130440.548666c1@infradead.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
The trace event name<->id mapping is dynamic for each kernel compile. In order for perf.data to be useable outside the actual system, we thus need to store a table of this mapping for later use. This patch adds this table to perf.data, and provides helper functions for lookup up fields from this table. To avoid mistakes, lookup-from-table is kept completely seprate from lookup-from-local-debugfs. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090912130405.6960d099@infradead.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arjan van de Ven 提交于
perf timechart needs to know when a process forked, in order to be able to visualize properly when tasks start. This patch adds a time field to the event structure, and fills it in appropriately. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090912130341.51ad2de2@infradead.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
Merge reason: Bring in tracing changes we depend on. Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
Arjan complained about the suckyness of TSC on modern machines, and asked if we could do something about that for PERF_SAMPLE_TIME. Make cpu_clock() NMI safe by removing the spinlock and using cmpxchg. This also makes it smaller and more robust. Affects architectures that use HAVE_UNSTABLE_SCHED_CLOCK, i.e. IA64 and x86. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
/me dons the brown paper bag. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Markus Metzger 提交于
Draining the BTS buffer on a buffer overflow interrupt takes too long resulting in a kernel lockup when tracing the kernel. Restructure perf_counter sampling into sample creation and sample output. Prepare a single reference sample for BTS sampling and update the from and to address fields when draining the BTS buffer. Drain the entire BTS buffer between a single perf_output_begin() / perf_output_end() pair. Signed-off-by: NMarkus Metzger <markus.t.metzger@intel.com> Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090915130023.A16204@sedona.ch.intel.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 18 9月, 2009 18 次提交
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由 Linus Torvalds 提交于
Commit ac89a917 ("pty: don't limit the writes to 'pty_space()' inside 'pty_write()'") removed the pty_space() checking, in order to let the regular tty buffer code limit the buffering itself. That was all good, but as a subtle side effect it meant that we'd be doing a tty_wakeup() even in the case where the buffers were all filled up, and didn't actually make any progress on the write. Which sounds innocuous, but it interacts very badly with the ppp_async code, which has an infinite loop in ppp_async_push() that tries to push out data to the tty. When we call tty_wakeup(), that loop ends up thinking that progress was made (see the subtle interactions between XMIT_WAKEUP and 'tty_stuffed' for details). End result: one unhappy ppp user. Fixed by noticing when tty_insert_flip_string() didn't actually do anything, and then not doing any more processing (including, very much not calling tty_wakeup()). Bisected-and-tested-by: NPeter Volkov <pva@gentoo.org> Cc: stable@kernel.org (2.6.31) Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Mike Galbraith 提交于
perf sched record passes unparsed args on to perf record, so specifying an output file via perf sched record -o FILE (cmd) just works. Ergo, provide an option to specify input file as well. Also add the missing 'map' command to help. Signed-off-by: NMike Galbraith <efault@gmx.de> Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1253254944.20589.11.camel@marge.simson.net> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip由 Linus Torvalds 提交于
* 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (21 commits) x86, mce: Fix compilation with !CONFIG_DEBUG_FS in mce-severity.c x86, mce: CE in last bank prevents panic by unknown MCE x86, mce: Fake panic support for MCE testing x86, mce: Move debugfs mce dir creating to mce.c x86, mce: Support specifying raise mode for software MCE injection x86, mce: Support specifying context for software mce injection x86, mce: fix reporting of Thermal Monitoring mechanism enabled x86, mce: remove never executed code x86, mce: add missing __cpuinit tags x86, mce: fix "mce" boot option handling for CONFIG_X86_NEW_MCE x86, mce: don't log boot MCEs on Pentium M (model == 13) CPUs x86: mce: Lower maximum number of banks to architecture limit x86: mce: macros to compute banks MSRs x86: mce: Move per bank data in a single datastructure x86: mce: Move code in mce.c x86: mce: Rename CONFIG_X86_NEW_MCE to CONFIG_X86_MCE x86: mce: Remove old i386 machine check code x86: mce: Update X86_MCE description in x86/Kconfig x86: mce: Make CONFIG_X86_ANCIENT_MCE dependent on CONFIG_X86_MCE x86, mce: use atomic_inc_return() instead of add by 1 ... Manually fixed up trivial conflicts: Documentation/feature-removal-schedule.txt arch/x86/kernel/cpu/mcheck/mce.c
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由 Linus Torvalds 提交于
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (37 commits) sched: Fix SD_POWERSAVING_BALANCE|SD_PREFER_LOCAL vs SD_WAKE_AFFINE sched: Stop buddies from hogging the system sched: Add new wakeup preemption mode: WAKEUP_RUNNING sched: Fix TASK_WAKING & loadaverage breakage sched: Disable wakeup balancing sched: Rename flags to wake_flags sched: Clean up the load_idx selection in select_task_rq_fair sched: Optimize cgroup vs wakeup a bit sched: x86: Name old_perf in a unique way sched: Implement a gentler fair-sleepers feature sched: Add SD_PREFER_LOCAL sched: Add a few SYNC hint knobs to play with sched: Fix sync wakeups again sched: Add WF_FORK sched: Rename sync arguments sched: Rename select_task_rq() argument sched: Feature to disable APERF/MPERF cpu_power x86: sched: Provide arch implementations using aperf/mperf x86: Add generic aperf/mperf code x86: Move APERF/MPERF into a X86_FEATURE ... Fix up trivial conflict in arch/x86/include/asm/processor.h due to nearby addition of amd_get_nb_id() declaration from the EDAC merge.
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由 Linus Torvalds 提交于
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, pat: don't use rb-tree based lookup in reserve_memtype() x86: Increase MIN_GAP to include randomized stack
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由 Linus Torvalds 提交于
Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (44 commits) vsnprintf: remove duplicate comment of vsnprintf softirq: add BLOCK_IOPOLL to softirq_to_name oprofile: fix oprofile regression: select RING_BUFFER_ALLOW_SWAP tracing: switch function prints from %pf to %ps vsprintf: add %ps that is the same as %pS but is like %pf tracing: Fix minor bugs for __unregister_ftrace_function_probe tracing: remove notrace from __kprobes annotation tracing: optimize global_trace_clock cachelines MAINTAINERS: Update tracing tree details ftrace: document function and function graph implementation tracing: make testing syscall events a separate configuration tracing: remove some unused macros ftrace: add compile-time check on F_printk() tracing: fix F_printk() typos tracing: have TRACE_EVENT macro use __flags to not shadow parameter tracing: add static to generated TRACE_EVENT functions ring-buffer: typecast cmpxchg to fix PowerPC warning tracing: add filter event logic to special, mmiotrace and boot tracers tracing: remove trace_event_types.h tracing: use the new trace_entries.h to create format files ...
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git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev由 Linus Torvalds 提交于
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: libata: Add pata_atp867x driver for Artop/Acard ATP867X controllers pata_amd: do not filter out valid modes in nv_mode_filter sata_promise: update reset code sata_promise: disable hotplug on 1st gen chips libata: fix spurious WARN_ON_ONCE() on port freeze ahci: restore pci_intx() handling
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc: Update defconfigs. sparc: Kill PROM console driver.
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (66 commits) be2net: fix some cmds to use mccq instead of mbox atl1e: fix 2.6.31-git4 -- ATL1E 0000:03:00.0: DMA-API: device driver frees DMA pkt_sched: Fix qstats.qlen updating in dump_stats ipv6: Log the affected address when DAD failure occurs wl12xx: Fix print_mac() conversion. af_iucv: fix race when queueing skbs on the backlog queue af_iucv: do not call iucv_sock_kill() twice af_iucv: handle non-accepted sockets after resuming from suspend af_iucv: fix race in __iucv_sock_wait() iucv: use correct output register in iucv_query_maxconn() iucv: fix iucv_buffer_cpumask check when calling IUCV functions iucv: suspend/resume error msg for left over pathes wl12xx: switch to %pM to print the mac address b44: the poll handler b44_poll must not enable IRQ unconditionally ipv6: Ignore route option with ROUTER_PREF_INVALID bonding: make ab_arp select active slaves as other modes cfg80211: fix SME connect rc80211_minstrel: fix contention window calculation ssb/sdio: fix printk format warnings p54usb: add Zcomax XG-705A usbid ...
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git://ftp.linux-mips.org/pub/scm/upstream-linus由 Linus Torvalds 提交于
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (51 commits) MIPS: BCM63xx: Add integrated ethernet mac support. MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs. MIPS: BCM63xx: Add Broadcom 63xx CPU definitions. MIPS: Octeon: Move some platform device registration to its own file. MIPS: Don't corrupt page tables on vmalloc fault. MIPS: Shrink the size of tlb handler MIPS: Alchemy: override loops_per_jiffy detection MIPS: hw_random: Add hardware RNG for Octeon SOCs. MIPS: Octeon: Add hardware RNG platform device. MIPS: Remove useless zero initializations. MIPS: Alchemy: get rid of allow_au1k_wait MIPS: Octeon: Set kernel_uses_llsc to false on non-SMP builds. MIPS: Allow kernel use of LL/SC to be separate from the presence of LL/SC. MIPS: Get rid of CONFIG_CPU_HAS_LLSC MIPS: Malta: Remove pointless use use of CONFIG_CPU_HAS_LLSC MIPS: Rewrite clearing of ll_bit on context switch in C MIPS: Rewrite sysmips(MIPS_ATOMIC_SET, ...) in C with inline assembler MIPS: Consolidate all CONFIG_CPU_HAS_LLSC use in a single C file. MIPS: Clean up linker script using new linker script macros. MIPS: Use PAGE_SIZE in assembly instead of _PAGE_SIZE. ...
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由 Li Zefan 提交于
Sample timestamp and cpu just like the -R option. Before: init-0 [-01] 1266874889.17179869184709551615: irq_handler_entry: irq=18 handler=eth0 init-0 [-01] 1266874889.17179869184709551615: irq_handler_entry: irq=18 handler=eth0 init-0 [-01] 1266874889.17179869184709551615: irq_handler_entry: irq=1 handler=i8042 init-0 [-01] 1266874889.17179869184709551615: irq_handler_entry: irq=18 handler=eth0 init-0 [-01] 1266874889.17179869184709551615: irq_handler_entry: irq=1 handler=i8042 After: init-0 [001] 7364.568965353: irq_handler_entry: irq=18 handler=eth0 init-0 [001] 7365.530226877: irq_handler_entry: irq=1 handler=i8042 init-0 [001] 7365.542831563: irq_handler_entry: irq=18 handler=eth0 init-0 [001] 7365.644156299: irq_handler_entry: irq=18 handler=eth0 init-0 [001] 7365.694556201: irq_handler_entry: irq=18 handler=eth0 Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Acked-by: NFrederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <4AB1F827.8040905@cn.fujitsu.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Li Zefan 提交于
The name length of some trace events is longer than 30, like sys_enter_sched_get_priority_max and ext4_mb_discard_preallocations. Passing those events to perf-record will fail, try: # ./perf record -f -e syscalls:sys_enter_sched_get_priority_max -F 1 -a Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Acked-by: NFrederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <4AB1F4AB.7050205@cn.fujitsu.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Li Zefan 提交于
get_tracing_file() should be paired with put_tracing_file(). Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Acked-by: NFrederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <4AB1F48F.4070807@cn.fujitsu.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 H. Peter Anvin 提交于
Merge reason: Suresh Siddha (1): x86, pat: don't use rb-tree based lookup in reserve_memtype() ... requires previous x86/pat commits already pushed to Linus. Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
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由 Suresh Siddha 提交于
Recent enhancement of rb-tree based lookup exposed a bug with the lookup mechanism in the reserve_memtype() which ensures that there are no conflicting memtype requests for the memory range. memtype_rb_search() returns an entry which has a start address <= new start address. And from here we traverse the linear linked list to check if there any conflicts with the existing mappings. As the rbtree is based on the start address of the memory range, it is quite possible that we have several overlapped mappings whose start address is much less than new requested start but the end is >= new requested end. This results in conflicting memtype mappings. Same bug exists with the old code which uses cached_entry from where we traverse the linear linked list. But the new rb-tree code exposes this bug fairly easily. For now, don't use the memtype_rb_search() and always start the search from the head of linear linked list in reserve_memtype(). Linear linked list for most of the systems grow's to few 10's of entries(as we track memory type of RAM pages using struct page). So we should be ok for now. We still retain the rbtree and use it to speed up free_memtype() which doesn't have the same bug(as we know what exactly we are searching for in free_memtype). Also use list_for_each_entry_from() in free_memtype() so that we start the search from rb-tree lookup result. Reported-by: NMarkus Trippelsdorf <markus@trippelsdorf.de> Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> LKML-Reference: <1253136483.4119.12.camel@sbs-t61.sc.intel.com> Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
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由 John(Jung-Ik) Lee 提交于
This is a new pata driver for ARTOP 867X 64bit 4-channel UDMA133 ATA ctrls. Based on the Atp867 data sheet rev 1.2, Acard, and in part on early ide codes from Eric Uhrhane <ericu@google.com>. Signed-off-by: NJohn(Jung-Ik) Lee <jilee@google.com> Reviewed-by: NGrant Grundler <grundler@google.com> Reviewed-by: NGwendal Gringo <gwendal@google.com> Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
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由 Robert Hancock 提交于
On a Compaq Presario V3000 laptop (NVIDIA MCP51 chipset), pata_amd selects PIO0 mode for the PATA DVD-RAM drive instead of MWDMA2 which it supports: ata4.00: ATAPI: HL-DT-ST DVDRAM GSA-4084N, KQ09, max MWDMA2 ata4: nv_mode_filter: 0x39f&0x7001->0x1, BIOS=0x0 (0x0) ACPI=0x7001 (60:600:0x11) ata4.00: configured for PIO0 For some reason, the BIOS-set UDMA configuration returns 0 and the ACPI _GTM reports that UDMA2 and PIO0 are enabled. This causes nv_mode_filter to end up allowing only PIO0 and UDMA0-2. Since the drive doesn't support UDMA we end up using PIO0. Since the controllers should always support PIO4, MWDMA2 and UDMA2 regardless of what cable type is used, let's make sure we don't filter out these modes regardless of what wacky settings the BIOS is using. Signed-off-by: NRobert Hancock <hancockrwd@gmail.com> Cc: stable@kernel.org Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
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由 Mikael Pettersson 提交于
sata_promise's reset code has deviated quite a bit from the Promise reference driver's, and it has been observed to fail to recover from errors in some cases. This patch thus updates the reset code to more closely match the reference driver: - soft reset (pdc_reset_port): * wait for ATA engine to not be in packet command mode (2nd gen only) * write reset bit in PDC_CTLSTAT before the first read in the loop * for 2nd gen SATA follow up with FPDMA reset and clearing error status registers - hard reset (pdc_sata_hardreset): * wait for ATA engine to not be in packet command mode (2nd gen only) * reset ATA engine via the PCI control register * Tejun's change to use non-waiting hardreset + follow-up SRST I'm not changing the hotplug mask bits since they are taken care of by sata_promise's ->freeze() and ->thaw() operations. And I'm not writing the PMP port # because that's always zero (for now). Tested here on various controllers. In particular, one disk which used to timeout and fail to recover from certain hdparm and smartmonctl commands now works nicely. Signed-off-by: NMikael Pettersson <mikpe@it.uu.se> Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
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