Add a script to produce a call-graph from data exported to a postgresql
database and derived from a processor trace event like intel_pt or intel_bts.
Refer to comments in the scripts call-graph-from-postgresql.py and
export-to-postgresql.py for more details on how to set up the environment,
install the required packages, etc.
Committer note:
From the scripts, for convenience while reading 'git log':
An example of using this script with Intel PT:
$ perf record -e intel_pt//u ls
$ perf script -s ~/libexec/perf-core/scripts/python/export-to-postgresql.py pt_example branches calls
2015-05-29 12:49:23.464364 Creating database...
2015-05-29 12:49:26.281717 Writing to intermediate files...
2015-05-29 12:49:27.190383 Copying to database...
2015-05-29 12:49:28.140451 Removing intermediate files...
2015-05-29 12:49:28.147451 Adding primary keys
2015-05-29 12:49:28.655683 Adding foreign keys
2015-05-29 12:49:29.365350 Done
$ python tools/perf/scripts/python/call-graph-from-postgresql.py pt_example
# The result is a GUI window with a tree representing a context-sensitive
# call-graph. Expanding a couple of levels of the tree and adjusting column
# widths to suit will display something like:
Call Graph: pt_example
Call Path |Object |Count|Time(ns)|Time(%)|Branch Count|Branch Count(%)
v- ls
v- 2638:2638
v- _start ld-2.19.so 1 10074071 100.0 211135 100.0
|- unknown unknown 1 13198 0.1 1 0.0
>- _dl_start ld-2.19.so 1 1400980 13.9 19637 9.3
>- _d_linit_internal ld-2.19.so 1 448152 4.4 11094 5.3
v-__libc_start_main@plt ls 1 8211741 81.5 180397 85.4
>- _dl_fixup ld-2.19.so 1 7607 0.1 108 0.1
>- __cxa_atexit libc-2.19.so 1 11737 0.1 10 0.0
>- __libc_csu_init ls 1 10354 0.1 10 0.0
|- _setjmp libc-2.19.so 1 0 0.0 4 0.0
v- main ls 1 8182043 99.6 180254 99.9
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1437150840-31811-11-git-send-email-adrian.hunter@intel.com
[ Added 'python-pyside qt-postgresql' to the yum cmdline installing required packages ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Driver bq2415x_charger works also without notify power supply device for
charger detection. But when charger detection is specified in DT, then
bq2415x_charger refused to loaded with -EPROBE_DEFER.
This patch rewrites code so that notify device for charger detection is
checked when power supply event is received and not when registering power
supply device. So this patch allows to use bq2415x_charger driver also when
kernel is compiled without driver for notify power supply device.
Now after this patch scheduled workqueue is called after INIT_DELAYED_WORK,
so it also fix problem when scheduled workqueue was called before init.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
perf script, report and inject all have the same itrace options. Put
them into an asciidoc include file.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1437150840-31811-10-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This patch adds the helper AHASH_REQUEST_ON_STACK for those users
of ahash that are synchronous only.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch introduces the crypto skcipher interface which aims
to replace both blkcipher and ablkcipher.
It's very similar to the existing ablkcipher interface. The
main difference is the removal of the givcrypt interface. In
order to make the transition easier for blkcipher users, there
is a helper SKCIPHER_REQUEST_ON_STACK which can be used to place
a request on the stack for synchronous transforms.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Running the following perf-stat command on an arm64 system produces the
following result...
[root@aarch64 ~]# perf stat -e kmem:mm_page_alloc -a sleep 1
Warning: [kmem:mm_page_alloc] function sizeof not defined
Warning: Error: expected type 4 but read 0
Segmentation fault
[root@aarch64 ~]#
The second warning was a result of the first warning not stopping
processing after it detected the issue.
That is, code that found the issue reported the first problem, but
because it did not exit out of the functions smoothly, it caused the
other warning to appear and not only that, it later caused the SIGSEGV.
Signed-off-by: Dean Nelson <dnelson@redhat.com>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20150820151632.13927.13791.email-sent-by-dnelson@teal
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Events that don't sample the timestamp have a timestamp value of -1.
Intel PT processing wasn't taking that into account.
This is particularly noticeable with Intel BTS because timestamps are
not requested by default.
Then, if the conversion of -1 to TSC results in a small number, the
processing is unaffected.
However if the conversion results in a big number, then the data is
processed prematurely before relevant sideband data like mmap events,
which in turn results in samples with unknown dsos.
Commiter note:
Since BTS wasn't upstream, I split the patch to fold the BTS part with
the patch introducing it, to avoid having this bug in the commit
history. PT was already upstream, so this patch contains that part.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1440060692-5585-1-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
The "/proc/kcore requires CAP_SYS_RAWIO" message comes up all the time
for 'perf script' if vmlinux is not found and the user isn't root, even
when the kernel is not being traced and even though the message is only
really relevant for annotation.
Change it to pr_debug and instead put a note in the message displayed if
annotation is not possible.
Also, the file being accessed might not be /proc/kcore. Tools can be
directed to a different location using the --kallsyms option in which
case kcore is expected to be in the same directory. Adjust the message
so it is not misleading in that case.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Li Zhang <zhlcindy@linux.vnet.ibm.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1440065260-8802-1-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Patch "perf script: Don't assume evsel position of tracking events"
changed 'perf script' to use 'perf_evlist__id2evsel()'. That results
in a segfault if there is more than 1 event and there are
synthesized mmap events e.g.
$ perf record -e cycles,instructions -p$$ sleep 1
$ perf script --show-mmap-events
Segmentation fault (core dumped)
That happens because these synthesized events have an 'id' of zero
which does not match any 'evsel'.
Currently, these synthesized events use the sample type of the first
evsel.
Change 'perf_evlist__id2evsel()' to reflect that which also makes
it consistent with 'perf_evlist__event2evsel()'.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Fixes: 06b234ec26 ("perf script: Don't assume evsel position of tracking events")
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1440059205-1765-1-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
On shutdown/reboot of CX20722, first shut down all EAPDs, then
shut down the afg node to D3.
Failure to do so can lead to spurious noises from the internal speaker
directly after reboot (and before the codec is reinitialized again, i e
in BIOS setup or GRUB menus).
BugLink: https://bugs.launchpad.net/bugs/1487345
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This patch adds native DSD support for the Gustard DAC-X20U.
Signed-off-by: Jurgen Kramer <gtmkramer@xs4all.nl>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The new MSR PMU driver made use of rdtsc() which does not exist (yet) in
this tree:
arch/x86/kernel/cpu/perf_event_msr.c:91:3: error: implicit declaration of function 'rdtsc'
Use the old rdtscll() primitive for now.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Revert of a VBT parsing commit that should've been queued for drm-next,
not v4.2. The revert unbreaks Braswell among other things.
Also on Braswell removal of DP HBR2/TP3 and intermediate eDP frequency
support. The code was optimistically added based on incorrect
documentation; the platform does not support them. These are cc: stable.
Finally a gpu state fix from Chris, also cc: stable.
* tag 'drm-intel-fixes-2015-08-20' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Avoid TP3 on CHV
drm/i915: remove HBR2 from chv supported list
Revert "drm/i915: Add eDP intermediate frequencies for CHV"
Revert "drm/i915: Allow parsing of variable size child device entries from VBT"
drm/i915: Flag the execlists context object as dirty after every use
- Fix a recently introduced issue in the ACPI backlight code which
causes lockdep to complain about a circular lock dependency during
initialization (Hans de Goede).
- Fix a possible memory during initialization in the Exynos cpufreq
driver (Shailendra Verma).
/
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)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=s0Ql
-----END PGP SIGNATURE-----
Merge tag 'pm+acpi-4.2-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI fixes from Rafael Wysocki:
"These fix a recent regression in the ACPI backlight code and a memory
leak in the Exynos cpufreq driver.
Specifics:
- Fix a recently introduced issue in the ACPI backlight code which
causes lockdep to complain about a circular lock dependency during
initialization (Hans de Goede).
- Fix a possible memory during initialization in the Exynos cpufreq
driver (Shailendra Verma)"
* tag 'pm+acpi-4.2-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: exynos: Fix for memory leak in case SoC name does not match
ACPI / video: Fix circular lock dependency issue in the video-detect code
* acpi-video:
ACPI / video: Fix circular lock dependency issue in the video-detect code
* cpufreq-fixes:
cpufreq: exynos: Fix for memory leak in case SoC name does not match
Meelis and Helge reported that 3a9ad0b4fd ("PCI: Add pci_bus_addr_t")
caused HPMCs on A500 and hangs on rp5470.
PA-RISC does not set ARCH_DMA_ADDR_T_64BIT, even for 64-bit kernels, so
prior to 3a9ad0b4fd, we always used 32-bit PCI addresses. After
3a9ad0b4fd, we do use 64-bit PCI addresses in 64-bit kernels, and
apparently there's some PA-RISC problem related to them.
Fixes: 3a9ad0b4fd ("PCI: Add pci_bus_addr_t")
Link: http://lkml.kernel.org/r/alpine.LRH.2.11.1507260929000.30065@math.ut.ee
Reported-by: Meelis Roos <mroos@linux.ee>
Reported-by: Helge Deller <deller@gmx.de>
Tested-by: Helge Deller <deller@gmx.de>
Based-on-idea-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
CC: stable@vger.kernel.org # v3.19+
Previously we checked for invalid MPS settings, i.e., a device with MPS
different than its upstream bridge, in pcie_bus_detect_mps(). We only did
this if the arch or hotplug driver called pcie_bus_configure_settings(),
and then only if PCIe bus tuning was disabled (PCIE_BUS_TUNE_OFF).
Move the MPS checking code to pci_configure_device(), so we do it in the
pci_device_add() path for every device.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Commit b253149b84 ("sched/idle/x86: Restore mwait_idle() to fix boot
hangs, to improve power savings and to improve performance") restores
mwait_idle(), but the trace_cpu_idle related calls are missing. This
causes powertop on my old desktop powered by Intel Core2 E6550 to
report zero wakeups and zero events.
Add them back to restore the proper behaviour.
Fixes: b253149b84 ("sched/idle/x86: Restore mwait_idle() to ...")
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Cc: <len.brown@intel.com>
Cc: stable@vger.kernel.org # 4.1
Link: http://lkml.kernel.org/r/1440046479-4262-1-git-send-email-jszhang@marvell.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Pull networking fixes from David Miller:
1) Out of bounds array access in 802.11 minstrel code, from Adrien
Schildknecht.
2) Don't use skb_get() in IGMP/MLD code paths, as this makes
pskb_may_pull() BUG. From Linus Luessing.
3) Fix off by one in ipv4 route dumping code, from Andy Whitcroft.
4) Fix deadlock in reqsk_queue_unlink(), from Eric Dumazet.
5) Fix ppp device deregistration wrt. netns deletion, from Guillaume
Nault.
6) Fix deadlock when creating per-cpu ipv6 routes, from Martin KaFai
Lau.
7) Fix memory leak in batman-adv code, from Sven Eckelmann.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
batman-adv: Fix memory leak on tt add with invalid vlan
net: phy: fix semicolon.cocci warnings
net: qmi_wwan: add HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module
be2net: avoid vxlan offloading on multichannel configs
ipv6: Fix a potential deadlock when creating pcpu rt
ipv6: Add rt6_make_pcpu_route()
ipv6: Remove un-used argument from ip6_dst_alloc()
net: phy: workaround for buggy cable detection by LAN8700 after cable plugging
net: ethernet: micrel: fix an error code
ppp: fix device unregistration upon netns deletion
net: phy: fix PHY_RUNNING in phy_state_machine
Revert "net: limit tcp/udp rmem/wmem to SOCK_{RCV,SND}BUF_MIN"
inet: fix potential deadlock in reqsk_queue_unlink()
gianfar: Restore link state settings after MAC reset
ipv4: off-by-one in continuation handling in /proc/net/route
net: fix wrong skb_get() usage / crash in IGMP/MLD parsing code
mac80211: fix invalid read in minstrel_sort_best_tp_rates()
- Fix i386 build with an (uncommon) configuration
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJV1bZtAAoJEFxbo/MsZsTR3sYH/2Q+wabqeFZotSZsJjYjSh+q
6hCRB/tD+LbmReYuFBsqStHUDEL0Ljh9kw6YQvUrEVLv6CIH/pCVhj2U+/INlUur
aScKQe1ttKaMzEAB2opLQnYMw5Q/C/pHAtq88MYMWnYBb9fM/puMyI0iXu8FhoOP
+QYdaDt7+hRfID3PWZ7JxLGu+AqVgis5OAh/rt/Y4aC/WaNF7ifrE4qIJlgaR9x4
IDglRBc4cPhLjwb2yhykiRHREhydVvRqEPsgji20T7pXVduj5DEqqVpU1XMqKBNU
0EmZ5wLnELvWxPWv3zCScAtvmH30+i4QQcGB/3igJCeYN0gBxzeoGbTKWf4P0HM=
=lRue
-----END PGP SIGNATURE-----
Merge tag 'for-linus-4.2-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen build fix from David Vrabel:
"Fix i386 build with an (uncommon) configuration"
* tag 'for-linus-4.2-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
x86/xen: make CONFIG_XEN depend on CONFIG_X86_LOCAL_APIC
Here are a small collecton of sound fix patches. The most significant
one is the disablement of newly introduced topology API. Its ABI
couldn't be stabilized enough, so we decided to delay for 4.3 in the
end. Other than that, all oneliner fixes: a USB-audio runtime PM fix
and a couple of HD-audio quirks.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=c+1+
-----END PGP SIGNATURE-----
Merge tag 'sound-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Here are a small collecton of sound fix patches.
The most significant one is the disablement of newly introduced
topology API. Its ABI couldn't be stabilized enough, so we decided to
delay for 4.3 in the end. Other than that, all oneliner fixes: a
USB-audio runtime PM fix and a couple of HD-audio quirks"
* tag 'sound-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Add dock support for Thinkpad W541 (17aa:2211)
ALSA: usb-audio: Fix runtime PM unbalance
ASoC: topology: Disable use from userspace
ASoC: topology: Add Kconfig option for topology
ALSA: hda - Fix the white noise on Dell laptop
GPIOF_IN flag was lost in:
Commit 633a21d80b4a("input: gpio_keys_polled: Add support for GPIO
descriptors").
Without this flag, legacy code path (for non-descriptor GPIO declarations)
would configure GPIO as output (0 meaning GPIOF_DIR_OUT | GPIOF_INIT_LOW).
Cc: stable@vger.kernel.org
Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Pull SCSI target fixes from Nicholas Bellinger:
"This contains a v4.2-rc specific RCU module unload regression bug-fix,
a long-standing iscsi-target bug-fix for duplicate target_xfer_tags
during NOP processing from Alexei, and two more small REPORT_LUNs
emulation related patches to make Solaris FC host LUN scanning happy
from Roland.
There is also one patch not included that allows target-core to limit
the number of fabric driver SGLs per I/O request using residuals, that
is currently required as a work-around for FC hosts which don't honor
EVPD block-limits settings. At this point, it will most likely become
for-next material"
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
target: Fix handling of small allocation lengths in REPORT LUNS
target: REPORT LUNS should return LUN 0 even for dynamic ACLs
target/iscsi: Fix double free of a TUR followed by a solicited NOPOUT
target: Perform RCU callback barrier before backend/fabric unload
Pull thermal fixes from Eduardo Valentin:
"Last minute fixes on the thermal-soc tree. There is a fix of a long
lasting bug in cpu cooling device, thanks for RMK for being pushing
this"
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
thermal/cpu_cooling: update policy limits if clipped_freq < policy->max
thermal/cpu_cooling: rename max_freq as clipped_freq in notifier
thermal/cpu_cooling: rename cpufreq_val as clipped_freq
thermal/cpu_cooling: convert 'switch' block to 'if' block in notifier
thermal/cpu_cooling: quit early after updating policy
thermal/cpu_cooling: No need to initialize max_freq to 0
thermal: cpu_cooling: fix lockdep problems in cpu_cooling
thermal: power_allocator: do not use devm* interfaces
This patch removes SPI_CMD_*_OFFSET defines, and uses the BIT(x)
defines instead.
Signed-off-by: Leilk Liu <leilk.liu@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
TX_ENDIAN/RX_ENDIAN bits define whether to reverse the endian
order of the data DMA from/to memory. The endian order should
keep the same with cpu endian.
Signed-off-by: Leilk Liu <leilk.liu@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
TI QSPI has four 32 bit data regsiters which can be used to transfer 16
bytes of data at once. The register group QSPI_SPI_DATA_REG_3,
QSPI_SPI_DATA_REG_2, QSPI_SPI_DATA_REG_1 and QSPI_SPI_DATA_REG is
treated as a single 128-bit word for shifting data in and out. The bit
at QSPI_SPI_DATA_REG_3[31] position is the first bit to be shifted out
in case of 128 bit transfer mode. Therefore the first byte to be written
to flash should be at QSPI_SPI_DATA_REG_3[31-25] position.
Instead of writing 1 byte at a time when interacting with spi-nor flash,
make use of all the four registers so that 16 bytes can be transferred
in one go. This reduces number of register writes and Word Complete
interrupts for a given transfer message size, thereby increasing the
write performance.
Without this patch the raw flash write speed is ~100KB/s, with this
patch the write speed increases to ~400 kB/s on DRA74 EVM.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
of_parse_phandle() returns a device_node pointer with the refcount
incremented. We should dispose of this reference when we're finished.
Drop the reference acquired by of_parse_phandle().
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
The pcibios_msi_controller() hook was only implemented by ARM, and it sets
pci_bus->msi now, so it doesn't need this hook anymore.
Remove the unused pcibios_msi_controller() hook.
[bhelgaas: changelog, split into separate patch]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
ARM now uses pci_bus->msi to store the msi_controller pointer, so we don't
need to save it in struct pci_sys_data, and we don't need to implement
pcibios_msi_controller() to get it out of pci_sys_data.
Remove msi_controller from struct pci_sys_data and
pcibios_msi_controller().
[bhelgaas: changelog, split into separate patch]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jingoo Han <jingoohan1@gmail.com>
ARM previously stored the msi_controller pointer in its sysdata, struct
pci_sys_data, and implemented pcibios_msi_controller() to retrieve it.
That made PCI host controller drivers specific to ARM because they had to
put the msi_controller pointer in the ARM-specific pci_sys_data.
There is now a generic mechanism, pci_scan_root_bus_msi(), for giving the
msi_controller pointer to the PCI core. Use this for all ARM systems and
for the DesignWare and Xilinx PCI host controller drivers.
This removes an ARM dependency from the DesignWare, DRA7xx, EXYNOS, i.MX6,
Keystone, Layerscape, SPEAr13xx, and Xilinx drivers.
[bhelgaas: changelog, split into separate patch]
Suggested-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
CC: Pratyush Anand <pratyush.anand@gmail.com>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Simon Horman <horms@verge.net.au>
CC: Russell King <linux@arm.linux.org.uk>
CC: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
CC: Thierry Reding <thierry.reding@gmail.com>
CC: Michal Simek <michal.simek@xilinx.com>
CC: Marc Zyngier <marc.zyngier@arm.com>
Add a pci_scan_root_bus_msi() interface so an arch can specify the MSI
controller up front. This removes the need for a pcibios callback to set
the MSI controller later.
This is not exported because I'd like to replace the variety of "scan root
bus" interfaces with a single, more extensible interface that can handle
the MSI controller, domain, pci_ops, resources, etc. I hope this interface
is temporary.
[bhelgaas: changelog, split into separate patch]
Suggested-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jingoo Han <jingoohan1@gmail.com>
In the ARM PCI bios32 layer, failures to dynamically allocate pci_sys_data
for a PCI bus, or a PCI bus scan failure have to be considered serious
warnings but they should not trigger a system panic so that at least the
system is given a chance to be debugged.
This patch replaces the panic statements with WARN() messages to improve
error reporting in the ARM PCI bios32 layer.
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jingoo Han <jingoohan1@gmail.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
CC: Russell King <linux@arm.linux.org.uk>
CC: Marc Zyngier <marc.zyngier@arm.com>
Make pci-host-generic driver (kernel option PCI_HOST_GENERIC) available on
arm64.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
ARM64 requires setup-irq.o to provide pci_fixup_irqs() implementation. We
are adding this now to support the pci-host-generic host controller, but we
enable it for ARM64 PCI so that other host controllers can use this as
well.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
The generic OF-based host controller driver uses pci_common_init_dev(),
which is ARM-specific and requires the ARM struct hw_pci. The part of
pci_common_init_dev() that is needed is limited and can be done here
without using hw_pci.
Note that the ARM pcibios functions expect the PCI sysdata to be a pointer
to a struct pci_sys_data. Add a struct pci_sys_data as the first element
in struct gen_pci so that when we use a gen_pci pointer as sysdata, it is
also a pointer to a struct pci_sys_data.
Create and scan the root bus directly without using the ARM
pci_common_init_dev() interface.
[bhelgaas: changelog, move pcie_bus_configure_settings() before
pci_bus_add_devices(), combine !PCI_PROBE_ONLY blocks]
Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Tested-by: Pavel Fedin <p.fedin@samsung.com>
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Current sed script makes assumptions about the structure of rules that
group .text sections in the vmlinux linker script. These assumptions
get broken occasionally, e.g.: 779c88c94c "ARM: 8321/1: asm-generic:
introduce.text.fixup input section", or 9bebe9e5b0 "kbuild: Fix
.text.unlikely placement".
Rewrite sed rules so that they don't depend on number/arrangement of text
sections in *(...) blocks.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Commit 6dd747825b ("ARM: imx: move timer resources into a structure")
moved initialization parameters into a data structure, but neglected to set
the irq field in that data structure for non-DT boots. This causes the system
to hang if a non-DT boot is attempted.
Fixes: 6dd747825b ("ARM: imx: move timer resources into a structure")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: http://lkml.kernel.org/r/1440066441-13930-1-git-send-email-linux@roeck-us.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Since commit feb44f1f7a (x86/xen:
Provide a "Xen PV" APIC driver to support >255 VCPUs) Xen guests need
a full APIC driver and thus should depend on X86_LOCAL_APIC.
This fixes an i386 build failure with !SMP && !CONFIG_X86_UP_APIC by
disabling Xen support in this configuration.
Users needing Xen support in a non-SMP i386 kernel will need to enable
CONFIG_X86_UP_APIC.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Cc: <stable@vger.kernel.org>
User visible:
- Fix buildid processing done at the end of a 'perf record' session, a
problem that happened in workloads involving lots of small short-lived
processes. That code was not asking the perf_session layer to order
the events.
Make the code more robust to handle some of the problems with such
out-of-order events and fix 'perf record' to ask for ordered events
on systems where we have perf_event_attr.sample_id_all. (Adrian Hunter)
- Show backtrace when handling a SIGSEGV in 'perf top --stdio' (Arnaldo Carvalho de Melo)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=5Zmg
-----END PGP SIGNATURE-----
Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
- Fix buildid processing done at the end of a 'perf record' session, a
problem that happened in workloads involving lots of small short-lived
processes. That code was not asking the perf_session layer to order
the events.
Make the code more robust to handle some of the problems with such
out-of-order events and fix 'perf record' to ask for ordered events
on systems where we have perf_event_attr.sample_id_all. (Adrian Hunter)
- Show backtrace when handling a SIGSEGV in 'perf top --stdio' (Arnaldo Carvalho de Melo)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Simplify a trivial if-return sequence by combining it with a preceding
function call.
The semantic patch that makes this change is available in
scripts/coccinelle/misc/simple_return.cocci.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Lucas Stach <l.stach@pengutronix.de>
Use BUG_ON() instead of an if condition followed by BUG().
The semantic patch that makes this change is available in
scripts/coccinelle/misc/bugon.cocci.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Pratyush Anand <pratyush.anand@gmail.com>
There is no need to use the IS_ERR_VALUE() macro for checking the return
value from pm_runtime_* functions.
Test for a negative pm_runtime_get_sync() return value instead of using
IS_ERR_VALUE().
The semantic patch that makes this change is available in
scripts/coccinelle/api/pm_runtime.cocci.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Kishon Vijay Abraham I <kishon@ti.com>
Add a function to find the start of the SADs in the ELD. This
complements the helper to retrieve the SAD count.
[airlied: this fixes a build problem with the alsa eld helper
which required this].
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
