CoreSight

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[PATCH v2 00/40] Use ASCII subset instead of UTF-8 alternate symbols

by Mauro Carvalho Chehab

This series contain basically a cleanup from all those years of converting files to ReST. During the conversion period, several tools like LaTeX, pandoc, DocBook and some specially-written scripts were used in order to convert existing documents. Such conversion tools - plus some text editor like LibreOffice or similar - have a set of rules that turns some typed ASCII characters into UTF-8 alternatives, for instance converting commas into curly commas and adding non-breakable spaces. All of those are meant to produce better results when the text is displayed in HTML or PDF formats. While it is perfectly fine to use UTF-8 characters in Linux, and specially at the documentation, it is better to stick to the ASCII subset on such particular case, due to a couple of reasons: 1. it makes life easier for tools like grep; 2. they easier to edit with the some commonly used text/source code editors. Also, Sphinx already do such conversion automatically outside literal blocks, as described at: https://docutils.sourceforge.io/docs/user/smartquotes.html In this series, the following UTF-8 symbols are replaced: - U+00a0 (' '): NO-BREAK SPACE - U+00ad (''): SOFT HYPHEN - U+00b4 ('´'): ACUTE ACCENT - U+00d7 ('×'): MULTIPLICATION SIGN - U+2010 ('‐'): HYPHEN - U+2018 ('‘'): LEFT SINGLE QUOTATION MARK - U+2019 ('’'): RIGHT SINGLE QUOTATION MARK - U+201c ('“'): LEFT DOUBLE QUOTATION MARK - U+201d ('”'): RIGHT DOUBLE QUOTATION MARK - U+2212 ('−'): MINUS SIGN - U+2217 ('∗'): ASTERISK OPERATOR - U+feff (''): ZERO WIDTH NO-BREAK SPACE (BOM) --- v2: - removed EM/EN DASH conversion from this patchset; - removed a few fixes, as those were addressed on a separate series. PS.: The first version of this series was posted with a different name: https://lore.kernel.org/lkml/cover.1620641727.git.mchehab+huawei@kernel.org/ I also changed the patch texts, in order to better describe the patches goals. Mauro Carvalho Chehab (40): docs: hwmon: Use ASCII subset instead of UTF-8 alternate symbols docs: admin-guide: Use ASCII subset instead of UTF-8 alternate symbols docs: admin-guide: media: ipu3.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: admin-guide: perf: imx-ddr.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: admin-guide: pm: Use ASCII subset instead of UTF-8 alternate symbols docs: trace: coresight: coresight-etm4x-reference.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: driver-api: ioctl.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: driver-api: thermal: Use ASCII subset instead of UTF-8 alternate symbols docs: driver-api: media: drivers: Use ASCII subset instead of UTF-8 alternate symbols docs: driver-api: firmware: other_interfaces.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: fault-injection: nvme-fault-injection.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: usb: Use ASCII subset instead of UTF-8 alternate symbols docs: process: code-of-conduct.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: userspace-api: media: fdl-appendix.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: userspace-api: media: v4l: Use ASCII subset instead of UTF-8 alternate symbols docs: userspace-api: media: dvb: Use ASCII subset instead of UTF-8 alternate symbols docs: vm: zswap.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: filesystems: f2fs.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: filesystems: ext4: Use ASCII subset instead of UTF-8 alternate symbols docs: kernel-hacking: Use ASCII subset instead of UTF-8 alternate symbols docs: hid: Use ASCII subset instead of UTF-8 alternate symbols docs: security: tpm: tpm_event_log.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: security: keys: trusted-encrypted.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: networking: scaling.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: networking: devlink: devlink-dpipe.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: networking: device_drivers: Use ASCII subset instead of UTF-8 alternate symbols docs: x86: Use ASCII subset instead of UTF-8 alternate symbols docs: scheduler: sched-deadline.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: power: powercap: powercap.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: ABI: Use ASCII subset instead of UTF-8 alternate symbols docs: PCI: acpi-info.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: gpu: Use ASCII subset instead of UTF-8 alternate symbols docs: sound: kernel-api: writing-an-alsa-driver.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: arm64: arm-acpi.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: infiniband: tag_matching.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: misc-devices: ibmvmc.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: firmware-guide: acpi: lpit.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: firmware-guide: acpi: dsd: graph.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: virt: kvm: api.rst: Use ASCII subset instead of UTF-8 alternate symbols docs: RCU: Use ASCII subset instead of UTF-8 alternate symbols ...sfs-class-chromeos-driver-cros-ec-lightbar | 2 +- .../ABI/testing/sysfs-devices-platform-ipmi | 2 +- .../testing/sysfs-devices-platform-trackpoint | 2 +- Documentation/ABI/testing/sysfs-devices-soc | 4 +- Documentation/PCI/acpi-info.rst | 22 +- .../Data-Structures/Data-Structures.rst | 52 ++-- .../Expedited-Grace-Periods.rst | 40 +-- .../Tree-RCU-Memory-Ordering.rst | 10 +- .../RCU/Design/Requirements/Requirements.rst | 122 ++++----- Documentation/admin-guide/media/ipu3.rst | 2 +- Documentation/admin-guide/perf/imx-ddr.rst | 2 +- Documentation/admin-guide/pm/intel_idle.rst | 4 +- Documentation/admin-guide/pm/intel_pstate.rst | 4 +- Documentation/admin-guide/ras.rst | 86 +++--- .../admin-guide/reporting-issues.rst | 2 +- Documentation/arm64/arm-acpi.rst | 8 +- .../driver-api/firmware/other_interfaces.rst | 2 +- Documentation/driver-api/ioctl.rst | 8 +- .../media/drivers/sh_mobile_ceu_camera.rst | 8 +- .../driver-api/media/drivers/zoran.rst | 2 +- .../driver-api/thermal/cpu-idle-cooling.rst | 14 +- .../driver-api/thermal/intel_powerclamp.rst | 6 +- .../thermal/x86_pkg_temperature_thermal.rst | 2 +- .../fault-injection/nvme-fault-injection.rst | 2 +- Documentation/filesystems/ext4/attributes.rst | 20 +- Documentation/filesystems/ext4/bigalloc.rst | 6 +- Documentation/filesystems/ext4/blockgroup.rst | 8 +- Documentation/filesystems/ext4/blocks.rst | 2 +- Documentation/filesystems/ext4/directory.rst | 16 +- Documentation/filesystems/ext4/eainode.rst | 2 +- Documentation/filesystems/ext4/inlinedata.rst | 6 +- Documentation/filesystems/ext4/inodes.rst | 6 +- Documentation/filesystems/ext4/journal.rst | 8 +- Documentation/filesystems/ext4/mmp.rst | 2 +- .../filesystems/ext4/special_inodes.rst | 4 +- Documentation/filesystems/ext4/super.rst | 10 +- Documentation/filesystems/f2fs.rst | 4 +- .../firmware-guide/acpi/dsd/graph.rst | 2 +- Documentation/firmware-guide/acpi/lpit.rst | 2 +- Documentation/gpu/i915.rst | 2 +- Documentation/gpu/komeda-kms.rst | 2 +- Documentation/hid/hid-sensor.rst | 70 ++--- Documentation/hid/intel-ish-hid.rst | 246 +++++++++--------- Documentation/hwmon/ir36021.rst | 2 +- Documentation/hwmon/ltc2992.rst | 2 +- Documentation/hwmon/pm6764tr.rst | 2 +- Documentation/infiniband/tag_matching.rst | 4 +- Documentation/kernel-hacking/hacking.rst | 2 +- Documentation/kernel-hacking/locking.rst | 2 +- Documentation/misc-devices/ibmvmc.rst | 8 +- .../device_drivers/ethernet/intel/i40e.rst | 8 +- .../device_drivers/ethernet/intel/iavf.rst | 4 +- .../device_drivers/ethernet/netronome/nfp.rst | 12 +- .../networking/devlink/devlink-dpipe.rst | 2 +- Documentation/networking/scaling.rst | 18 +- Documentation/power/powercap/powercap.rst | 210 +++++++-------- Documentation/process/code-of-conduct.rst | 2 +- Documentation/scheduler/sched-deadline.rst | 2 +- .../security/keys/trusted-encrypted.rst | 4 +- Documentation/security/tpm/tpm_event_log.rst | 2 +- .../kernel-api/writing-an-alsa-driver.rst | 68 ++--- .../coresight/coresight-etm4x-reference.rst | 16 +- Documentation/usb/ehci.rst | 2 +- Documentation/usb/gadget_printer.rst | 2 +- Documentation/usb/mass-storage.rst | 36 +-- .../media/dvb/audio-set-bypass-mode.rst | 2 +- .../userspace-api/media/dvb/audio.rst | 2 +- .../userspace-api/media/dvb/dmx-fopen.rst | 2 +- .../userspace-api/media/dvb/dmx-fread.rst | 2 +- .../media/dvb/dmx-set-filter.rst | 2 +- .../userspace-api/media/dvb/intro.rst | 6 +- .../userspace-api/media/dvb/video.rst | 2 +- .../userspace-api/media/fdl-appendix.rst | 64 ++--- .../userspace-api/media/v4l/crop.rst | 16 +- .../userspace-api/media/v4l/dev-decoder.rst | 6 +- .../userspace-api/media/v4l/diff-v4l.rst | 2 +- .../userspace-api/media/v4l/open.rst | 2 +- .../media/v4l/vidioc-cropcap.rst | 4 +- Documentation/virt/kvm/api.rst | 28 +- Documentation/vm/zswap.rst | 4 +- Documentation/x86/resctrl.rst | 2 +- Documentation/x86/sgx.rst | 4 +- 82 files changed, 693 insertions(+), 693 deletions(-) -- 2.30.2

5 years, 4 months

Custom Apparel Manufacture

by Daniel Smith

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5 years, 4 months

[RFC PATCH] perf cs-etm: Handle valid-but-zero timestamps

by James Clark

There is an intermittent issue on Trogdor devices that results in all Coresight timestamps having a value of zero. Because zero is currently treated as "not found" rather than "found but zero", this breaks the decoding flow when it would otherwise work. This patch adds an out parameter and return code so the difference between zero and non-existent timestamps can be determined. There is also a change to fix an underflow. Although this is a workaround, the change is technically a valid way of writing the cs_etm__etmq_get_timestamp() function. It could have been written similarly to this without trying to work around this issue, so it's no less correct. But, because it's a workaround to a problem elsewhere, I will submit this as an RFC for feedback. This patch applies on top of the "[PATCH v2 0/2] perf cs-etm: Set time on synthesised samples to preserve ordering" patchset. Co-developed-by: Denis Nikitin <denik(a)chromium.org> Signed-off-by: Denis Nikitin <denik(a)chromium.org> Signed-off-by: James Clark <james.clark(a)arm.com> --- .../perf/util/cs-etm-decoder/cs-etm-decoder.c | 5 ++++- tools/perf/util/cs-etm.c | 22 +++++++++---------- 2 files changed, 15 insertions(+), 12 deletions(-) diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c index b01d363b9301..947e44413c6e 100644 --- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c +++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c @@ -320,7 +320,10 @@ cs_etm_decoder__do_hard_timestamp(struct cs_etm_queue *etmq, * which instructions started by subtracting the number of instructions * executed to the timestamp. */ - packet_queue->cs_timestamp = elem->timestamp - packet_queue->instr_count; + if (packet_queue->instr_count >= elem->timestamp) + packet_queue->cs_timestamp = 0; + else + packet_queue->cs_timestamp = elem->timestamp - packet_queue->instr_count; packet_queue->next_cs_timestamp = elem->timestamp; packet_queue->instr_count = 0; diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c index e5c1a1b22a2a..1969921c406a 100644 --- a/tools/perf/util/cs-etm.c +++ b/tools/perf/util/cs-etm.c @@ -210,13 +210,14 @@ void cs_etm__etmq_set_traceid_queue_timestamp(struct cs_etm_queue *etmq, etmq->pending_timestamp_chan_id = trace_chan_id; } -static u64 cs_etm__etmq_get_timestamp(struct cs_etm_queue *etmq, +static int cs_etm__etmq_get_timestamp(struct cs_etm_queue *etmq, + u64 *timestamp, u8 *trace_chan_id) { struct cs_etm_packet_queue *packet_queue; if (!etmq->pending_timestamp_chan_id) - return 0; + return -ENODATA; if (trace_chan_id) *trace_chan_id = etmq->pending_timestamp_chan_id; @@ -224,13 +225,15 @@ static u64 cs_etm__etmq_get_timestamp(struct cs_etm_queue *etmq, packet_queue = cs_etm__etmq_get_packet_queue(etmq, etmq->pending_timestamp_chan_id); if (!packet_queue) - return 0; + return -ENODATA; /* Acknowledge pending status */ etmq->pending_timestamp_chan_id = 0; /* See function cs_etm_decoder__do_{hard|soft}_timestamp() */ - return packet_queue->cs_timestamp; + if (timestamp) + *timestamp = packet_queue->cs_timestamp; + return 0; } static void cs_etm__clear_packet_queue(struct cs_etm_packet_queue *queue) @@ -864,11 +867,10 @@ static int cs_etm__setup_queue(struct cs_etm_auxtrace *etm, * Function cs_etm_decoder__do_{hard|soft}_timestamp() does all * the timestamp calculation for us. */ - cs_timestamp = cs_etm__etmq_get_timestamp(etmq, &trace_chan_id); - - /* We found a timestamp, no need to continue. */ - if (cs_timestamp) + if (!cs_etm__etmq_get_timestamp(etmq, &cs_timestamp, &trace_chan_id)) { + /* We found a timestamp, no need to continue. */ break; + } /* * We didn't find a timestamp so empty all the traceid packet @@ -2286,9 +2288,7 @@ static int cs_etm__process_queues(struct cs_etm_auxtrace *etm) if (ret) goto out; - cs_timestamp = cs_etm__etmq_get_timestamp(etmq, &trace_chan_id); - - if (!cs_timestamp) { + if (cs_etm__etmq_get_timestamp(etmq, &cs_timestamp, &trace_chan_id)) { /* * Function cs_etm__decode_data_block() returns when * there is no more traces to decode in the current -- 2.28.0

5 years, 4 months

[PATCH 0/3] coresight: Few cleanups

by Qi Liu

This patchset is just a clean up and should not cause a functional change. Junhao He (3): coresight: core: Fix use of uninitialized pointer coresight: core: Remove unnecessary assignment coresight: etm4x: core: Remove redundant check of attr drivers/hwtracing/coresight/coresight-core.c | 3 +-- drivers/hwtracing/coresight/coresight-etm4x-core.c | 5 ----- 2 files changed, 1 insertion(+), 7 deletions(-) -- 2.7.4

5 years, 4 months

[PATCH v1 0/3] coresight: Support for building more coresight paths

by Tao Zhang

We are trying to achieve more types of Coresight source devices. For example, we have a type of coresight source devic named TPDM. In the process of using, sometimes mulitiple TPDMs need to be connected to the different input ports on the same funnel. Meanwhile, these TPDMs also need to output from different ports on the funnel. But, at present the Coresight driver assumes a) Only support Coresight source type ETM, ETR and ETF b) Funnels only support mulitiple inputs and one output Which doesn't help to add the above feature for our new Coresight source device TPDM. So, in order to accommodate the new device, we develop the following patches. a) Add support more types of Coresight source devices. b) Add support for multiple output ports on funnel and the output ports could be selected by Corsight source. Applies on coresight/next. http://git.linaro.org/kernel/coresight.git/log/?h=next Tao Zhang (3): coresight: add support to enable more coresight paths coresight: funnel: add support for multiple output ports dt-bindings: arm: add property for selecting funnel output port .../devicetree/bindings/arm/coresight.txt | 5 + drivers/hwtracing/coresight/coresight-core.c | 169 ++++++++++++++------- drivers/hwtracing/coresight/coresight-platform.c | 9 ++ include/linux/coresight.h | 2 + 4 files changed, 127 insertions(+), 58 deletions(-) -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project

5 years, 4 months

[PATCH v3 0/2] perf cs-etm: Set time on synthesised samples to preserve ordering

by James Clark

Changes since v2: * Collect acked and reviewed-by tags from v1 that were missed in v2 * Add comment and commit message suggestions from Suzuki * Rebase onto next-20210510 (also applies to perf/core) Thanks James James Clark (2): perf cs-etm: Refactor timestamp variable names perf cs-etm: Set time on synthesised samples to preserve ordering .../perf/util/cs-etm-decoder/cs-etm-decoder.c | 18 +++--- tools/perf/util/cs-etm.c | 57 +++++++++++-------- tools/perf/util/cs-etm.h | 4 +- 3 files changed, 44 insertions(+), 35 deletions(-) -- 2.28.0

5 years, 4 months

Re: [PATCH v3 1/1] kernel.h: Split out panic and oops helpers

by Mathieu Poirier

On Tue, May 11, 2021 at 10:41:37AM +0300, Andy Shevchenko wrote: > kernel.h is being used as a dump for all kinds of stuff for a long time. > Here is the attempt to start cleaning it up by splitting out panic and > oops helpers. > > There are several purposes of doing this: > - dropping dependency in bug.h > - dropping a loop by moving out panic_notifier.h > - unload kernel.h from something which has its own domain > > At the same time convert users tree-wide to use new headers, although > for the time being include new header back to kernel.h to avoid twisted > indirected includes for existing users. > > Signed-off-by: Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> > Reviewed-by: Bjorn Andersson <bjorn.andersson(a)linaro.org> > Acked-by: Mike Rapoport <rppt(a)linux.ibm.com> > Acked-by: Corey Minyard <cminyard(a)mvista.com> > Acked-by: Christian Brauner <christian.brauner(a)ubuntu.com> > Acked-by: Arnd Bergmann <arnd(a)arndb.de> > Acked-by: Kees Cook <keescook(a)chromium.org> > Acked-by: Wei Liu <wei.liu(a)kernel.org> > Acked-by: Rasmus Villemoes <linux(a)rasmusvillemoes.dk> > Co-developed-by: Andrew Morton <akpm(a)linux-foundation.org> > Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> > Acked-by: Sebastian Reichel <sre(a)kernel.org> > Acked-by: Luis Chamberlain <mcgrof(a)kernel.org> > Acked-by: Stephen Boyd <sboyd(a)kernel.org> > Acked-by: Thomas Bogendoerfer <tsbogend(a)alpha.franken.de> > Acked-by: Helge Deller <deller(a)gmx.de> # parisc > --- > v3: rebased on top of v5.13-rc1, collected a few more tags > > Note WRT Andrew's SoB tag above: I have added it since part of the cases > I took from him. Andrew, feel free to amend or tell me how you want me > to do. > > arch/alpha/kernel/setup.c | 2 +- > arch/arm64/kernel/setup.c | 1 + > arch/mips/kernel/relocate.c | 1 + > arch/mips/sgi-ip22/ip22-reset.c | 1 + > arch/mips/sgi-ip32/ip32-reset.c | 1 + > arch/parisc/kernel/pdc_chassis.c | 1 + > arch/powerpc/kernel/setup-common.c | 1 + > arch/s390/kernel/ipl.c | 1 + > arch/sparc/kernel/sstate.c | 1 + > arch/um/drivers/mconsole_kern.c | 1 + > arch/um/kernel/um_arch.c | 1 + > arch/x86/include/asm/desc.h | 1 + > arch/x86/kernel/cpu/mshyperv.c | 1 + > arch/x86/kernel/setup.c | 1 + > arch/x86/purgatory/purgatory.c | 2 + > arch/x86/xen/enlighten.c | 1 + > arch/xtensa/platforms/iss/setup.c | 1 + > drivers/bus/brcmstb_gisb.c | 1 + > drivers/char/ipmi/ipmi_msghandler.c | 1 + > drivers/clk/analogbits/wrpll-cln28hpc.c | 4 + > drivers/edac/altera_edac.c | 1 + > drivers/firmware/google/gsmi.c | 1 + > drivers/hv/vmbus_drv.c | 1 + > .../hwtracing/coresight/coresight-cpu-debug.c | 1 + Reviewed-by: Mathieu Poirier <mathieu.poirier(a)linaro.org> > drivers/leds/trigger/ledtrig-activity.c | 1 + > drivers/leds/trigger/ledtrig-heartbeat.c | 1 + > drivers/leds/trigger/ledtrig-panic.c | 1 + > drivers/misc/bcm-vk/bcm_vk_dev.c | 1 + > drivers/misc/ibmasm/heartbeat.c | 1 + > drivers/misc/pvpanic/pvpanic.c | 1 + > drivers/net/ipa/ipa_smp2p.c | 1 + > drivers/parisc/power.c | 1 + > drivers/power/reset/ltc2952-poweroff.c | 1 + > drivers/remoteproc/remoteproc_core.c | 1 + Reviewed-by: Mathieu Poirier <mathieu.poirier(a)linaro.org> > drivers/s390/char/con3215.c | 1 + > drivers/s390/char/con3270.c | 1 + > drivers/s390/char/sclp.c | 1 + > drivers/s390/char/sclp_con.c | 1 + > drivers/s390/char/sclp_vt220.c | 1 + > drivers/s390/char/zcore.c | 1 + > drivers/soc/bcm/brcmstb/pm/pm-arm.c | 1 + > drivers/staging/olpc_dcon/olpc_dcon.c | 1 + > drivers/video/fbdev/hyperv_fb.c | 1 + > include/asm-generic/bug.h | 3 +- > include/linux/kernel.h | 84 +--------------- > include/linux/panic.h | 98 +++++++++++++++++++ > include/linux/panic_notifier.h | 12 +++ > kernel/hung_task.c | 1 + > kernel/kexec_core.c | 1 + > kernel/panic.c | 1 + > kernel/rcu/tree.c | 2 + > kernel/sysctl.c | 1 + > kernel/trace/trace.c | 1 + > 53 files changed, 167 insertions(+), 85 deletions(-) > create mode 100644 include/linux/panic.h > create mode 100644 include/linux/panic_notifier.h > > diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c > index 03dda3beb3bd..5d1296534682 100644 > --- a/arch/alpha/kernel/setup.c > +++ b/arch/alpha/kernel/setup.c > @@ -28,6 +28,7 @@ > #include <linux/init.h> > #include <linux/string.h> > #include <linux/ioport.h> > +#include <linux/panic_notifier.h> > #include <linux/platform_device.h> > #include <linux/memblock.h> > #include <linux/pci.h> > @@ -46,7 +47,6 @@ > #include <linux/log2.h> > #include <linux/export.h> > > -extern struct atomic_notifier_head panic_notifier_list; > static int alpha_panic_event(struct notifier_block *, unsigned long, void *); > static struct notifier_block alpha_panic_block = { > alpha_panic_event, > diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c > index 61845c0821d9..787bc0f601b3 100644 > --- a/arch/arm64/kernel/setup.c > +++ b/arch/arm64/kernel/setup.c > @@ -23,6 +23,7 @@ > #include <linux/interrupt.h> > #include <linux/smp.h> > #include <linux/fs.h> > +#include <linux/panic_notifier.h> > #include <linux/proc_fs.h> > #include <linux/memblock.h> > #include <linux/of_fdt.h> > diff --git a/arch/mips/kernel/relocate.c b/arch/mips/kernel/relocate.c > index 499a5357c09f..56b51de2dc51 100644 > --- a/arch/mips/kernel/relocate.c > +++ b/arch/mips/kernel/relocate.c > @@ -18,6 +18,7 @@ > #include <linux/kernel.h> > #include <linux/libfdt.h> > #include <linux/of_fdt.h> > +#include <linux/panic_notifier.h> > #include <linux/sched/task.h> > #include <linux/start_kernel.h> > #include <linux/string.h> > diff --git a/arch/mips/sgi-ip22/ip22-reset.c b/arch/mips/sgi-ip22/ip22-reset.c > index c374f3ceec38..9028dbbb45dd 100644 > --- a/arch/mips/sgi-ip22/ip22-reset.c > +++ b/arch/mips/sgi-ip22/ip22-reset.c > @@ -12,6 +12,7 @@ > #include <linux/kernel.h> > #include <linux/sched/signal.h> > #include <linux/notifier.h> > +#include <linux/panic_notifier.h> > #include <linux/pm.h> > #include <linux/timer.h> > > diff --git a/arch/mips/sgi-ip32/ip32-reset.c b/arch/mips/sgi-ip32/ip32-reset.c > index 20d8637340be..18d1c115cd53 100644 > --- a/arch/mips/sgi-ip32/ip32-reset.c > +++ b/arch/mips/sgi-ip32/ip32-reset.c > @@ -12,6 +12,7 @@ > #include <linux/init.h> > #include <linux/kernel.h> > #include <linux/module.h> > +#include <linux/panic_notifier.h> > #include <linux/sched.h> > #include <linux/sched/signal.h> > #include <linux/notifier.h> > diff --git a/arch/parisc/kernel/pdc_chassis.c b/arch/parisc/kernel/pdc_chassis.c > index 75ae88d13909..da154406d368 100644 > --- a/arch/parisc/kernel/pdc_chassis.c > +++ b/arch/parisc/kernel/pdc_chassis.c > @@ -20,6 +20,7 @@ > #include <linux/init.h> > #include <linux/module.h> > #include <linux/kernel.h> > +#include <linux/panic_notifier.h> > #include <linux/reboot.h> > #include <linux/notifier.h> > #include <linux/cache.h> > diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c > index 74a98fff2c2f..046fe21b5c3b 100644 > --- a/arch/powerpc/kernel/setup-common.c > +++ b/arch/powerpc/kernel/setup-common.c > @@ -9,6 +9,7 @@ > #undef DEBUG > > #include <linux/export.h> > +#include <linux/panic_notifier.h> > #include <linux/string.h> > #include <linux/sched.h> > #include <linux/init.h> > diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c > index dba04fbc37a2..36f870dc944f 100644 > --- a/arch/s390/kernel/ipl.c > +++ b/arch/s390/kernel/ipl.c > @@ -13,6 +13,7 @@ > #include <linux/init.h> > #include <linux/device.h> > #include <linux/delay.h> > +#include <linux/panic_notifier.h> > #include <linux/reboot.h> > #include <linux/ctype.h> > #include <linux/fs.h> > diff --git a/arch/sparc/kernel/sstate.c b/arch/sparc/kernel/sstate.c > index ac8677c3841e..3bcc4ddc6911 100644 > --- a/arch/sparc/kernel/sstate.c > +++ b/arch/sparc/kernel/sstate.c > @@ -6,6 +6,7 @@ > > #include <linux/kernel.h> > #include <linux/notifier.h> > +#include <linux/panic_notifier.h> > #include <linux/reboot.h> > #include <linux/init.h> > > diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c > index 6d00af25ec6b..328b16f99b30 100644 > --- a/arch/um/drivers/mconsole_kern.c > +++ b/arch/um/drivers/mconsole_kern.c > @@ -12,6 +12,7 @@ > #include <linux/mm.h> > #include <linux/module.h> > #include <linux/notifier.h> > +#include <linux/panic_notifier.h> > #include <linux/reboot.h> > #include <linux/sched/debug.h> > #include <linux/proc_fs.h> > diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c > index 74e07e748a9b..9512253947d5 100644 > --- a/arch/um/kernel/um_arch.c > +++ b/arch/um/kernel/um_arch.c > @@ -7,6 +7,7 @@ > #include <linux/init.h> > #include <linux/mm.h> > #include <linux/module.h> > +#include <linux/panic_notifier.h> > #include <linux/seq_file.h> > #include <linux/string.h> > #include <linux/utsname.h> > diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h > index 476082a83d1c..ceb12683b6d1 100644 > --- a/arch/x86/include/asm/desc.h > +++ b/arch/x86/include/asm/desc.h > @@ -9,6 +9,7 @@ > #include <asm/irq_vectors.h> > #include <asm/cpu_entry_area.h> > > +#include <linux/debug_locks.h> > #include <linux/smp.h> > #include <linux/percpu.h> > > diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c > index 22f13343b5da..9e5c6f2b044d 100644 > --- a/arch/x86/kernel/cpu/mshyperv.c > +++ b/arch/x86/kernel/cpu/mshyperv.c > @@ -17,6 +17,7 @@ > #include <linux/irq.h> > #include <linux/kexec.h> > #include <linux/i8253.h> > +#include <linux/panic_notifier.h> > #include <linux/random.h> > #include <asm/processor.h> > #include <asm/hypervisor.h> > diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c > index 72920af0b3c0..bdcdd29efea6 100644 > --- a/arch/x86/kernel/setup.c > +++ b/arch/x86/kernel/setup.c > @@ -14,6 +14,7 @@ > #include <linux/initrd.h> > #include <linux/iscsi_ibft.h> > #include <linux/memblock.h> > +#include <linux/panic_notifier.h> > #include <linux/pci.h> > #include <linux/root_dev.h> > #include <linux/hugetlb.h> > diff --git a/arch/x86/purgatory/purgatory.c b/arch/x86/purgatory/purgatory.c > index f03b64d9cb51..7558139920f8 100644 > --- a/arch/x86/purgatory/purgatory.c > +++ b/arch/x86/purgatory/purgatory.c > @@ -9,6 +9,8 @@ > */ > > #include <linux/bug.h> > +#include <linux/kernel.h> > +#include <linux/types.h> > #include <crypto/sha2.h> > #include <asm/purgatory.h> > > diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c > index aa9f50fccc5d..c79bd0af2e8c 100644 > --- a/arch/x86/xen/enlighten.c > +++ b/arch/x86/xen/enlighten.c > @@ -6,6 +6,7 @@ > #include <linux/cpu.h> > #include <linux/kexec.h> > #include <linux/slab.h> > +#include <linux/panic_notifier.h> > > #include <xen/xen.h> > #include <xen/features.h> > diff --git a/arch/xtensa/platforms/iss/setup.c b/arch/xtensa/platforms/iss/setup.c > index ed519aee0ec8..d3433e1bb94e 100644 > --- a/arch/xtensa/platforms/iss/setup.c > +++ b/arch/xtensa/platforms/iss/setup.c > @@ -14,6 +14,7 @@ > #include <linux/init.h> > #include <linux/kernel.h> > #include <linux/notifier.h> > +#include <linux/panic_notifier.h> > #include <linux/printk.h> > #include <linux/string.h> > > diff --git a/drivers/bus/brcmstb_gisb.c b/drivers/bus/brcmstb_gisb.c > index 7355fa2cb439..6551286a60cc 100644 > --- a/drivers/bus/brcmstb_gisb.c > +++ b/drivers/bus/brcmstb_gisb.c > @@ -6,6 +6,7 @@ > #include <linux/init.h> > #include <linux/types.h> > #include <linux/module.h> > +#include <linux/panic_notifier.h> > #include <linux/platform_device.h> > #include <linux/interrupt.h> > #include <linux/sysfs.h> > diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c > index 8a0e97b33cae..e96cb5c4f97a 100644 > --- a/drivers/char/ipmi/ipmi_msghandler.c > +++ b/drivers/char/ipmi/ipmi_msghandler.c > @@ -16,6 +16,7 @@ > > #include <linux/module.h> > #include <linux/errno.h> > +#include <linux/panic_notifier.h> > #include <linux/poll.h> > #include <linux/sched.h> > #include <linux/seq_file.h> > diff --git a/drivers/clk/analogbits/wrpll-cln28hpc.c b/drivers/clk/analogbits/wrpll-cln28hpc.c > index 776ead319ae9..7c64ea52a8d5 100644 > --- a/drivers/clk/analogbits/wrpll-cln28hpc.c > +++ b/drivers/clk/analogbits/wrpll-cln28hpc.c > @@ -23,8 +23,12 @@ > > #include <linux/bug.h> > #include <linux/err.h> > +#include <linux/limits.h> > #include <linux/log2.h> > #include <linux/math64.h> > +#include <linux/math.h> > +#include <linux/minmax.h> > + > #include <linux/clk/analogbits-wrpll-cln28hpc.h> > > /* MIN_INPUT_FREQ: minimum input clock frequency, in Hz (Fref_min) */ > diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c > index 5f7fd79ec82f..61c21bd880a4 100644 > --- a/drivers/edac/altera_edac.c > +++ b/drivers/edac/altera_edac.c > @@ -20,6 +20,7 @@ > #include <linux/of_address.h> > #include <linux/of_irq.h> > #include <linux/of_platform.h> > +#include <linux/panic_notifier.h> > #include <linux/platform_device.h> > #include <linux/regmap.h> > #include <linux/types.h> > diff --git a/drivers/firmware/google/gsmi.c b/drivers/firmware/google/gsmi.c > index bb6e77ee3898..adaa492c3d2d 100644 > --- a/drivers/firmware/google/gsmi.c > +++ b/drivers/firmware/google/gsmi.c > @@ -19,6 +19,7 @@ > #include <linux/dma-mapping.h> > #include <linux/fs.h> > #include <linux/slab.h> > +#include <linux/panic_notifier.h> > #include <linux/ioctl.h> > #include <linux/acpi.h> > #include <linux/io.h> > diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c > index 92cb3f7d21d9..57bbbaa4e8f7 100644 > --- a/drivers/hv/vmbus_drv.c > +++ b/drivers/hv/vmbus_drv.c > @@ -25,6 +25,7 @@ > > #include <linux/delay.h> > #include <linux/notifier.h> > +#include <linux/panic_notifier.h> > #include <linux/ptrace.h> > #include <linux/screen_info.h> > #include <linux/kdebug.h> > diff --git a/drivers/hwtracing/coresight/coresight-cpu-debug.c b/drivers/hwtracing/coresight/coresight-cpu-debug.c > index 2dcf13de751f..9731d3a96073 100644 > --- a/drivers/hwtracing/coresight/coresight-cpu-debug.c > +++ b/drivers/hwtracing/coresight/coresight-cpu-debug.c > @@ -17,6 +17,7 @@ > #include <linux/kernel.h> > #include <linux/module.h> > #include <linux/moduleparam.h> > +#include <linux/panic_notifier.h> > #include <linux/pm_qos.h> > #include <linux/slab.h> > #include <linux/smp.h> > diff --git a/drivers/leds/trigger/ledtrig-activity.c b/drivers/leds/trigger/ledtrig-activity.c > index 14ba7faaed9e..30bc9df03636 100644 > --- a/drivers/leds/trigger/ledtrig-activity.c > +++ b/drivers/leds/trigger/ledtrig-activity.c > @@ -11,6 +11,7 @@ > #include <linux/kernel_stat.h> > #include <linux/leds.h> > #include <linux/module.h> > +#include <linux/panic_notifier.h> > #include <linux/reboot.h> > #include <linux/sched.h> > #include <linux/slab.h> > diff --git a/drivers/leds/trigger/ledtrig-heartbeat.c b/drivers/leds/trigger/ledtrig-heartbeat.c > index 36b6709afe9f..7fe0a05574d2 100644 > --- a/drivers/leds/trigger/ledtrig-heartbeat.c > +++ b/drivers/leds/trigger/ledtrig-heartbeat.c > @@ -11,6 +11,7 @@ > #include <linux/module.h> > #include <linux/kernel.h> > #include <linux/init.h> > +#include <linux/panic_notifier.h> > #include <linux/slab.h> > #include <linux/timer.h> > #include <linux/sched.h> > diff --git a/drivers/leds/trigger/ledtrig-panic.c b/drivers/leds/trigger/ledtrig-panic.c > index 5751cd032f9d..64abf2e91608 100644 > --- a/drivers/leds/trigger/ledtrig-panic.c > +++ b/drivers/leds/trigger/ledtrig-panic.c > @@ -8,6 +8,7 @@ > #include <linux/kernel.h> > #include <linux/init.h> > #include <linux/notifier.h> > +#include <linux/panic_notifier.h> > #include <linux/leds.h> > #include "../leds.h" > > diff --git a/drivers/misc/bcm-vk/bcm_vk_dev.c b/drivers/misc/bcm-vk/bcm_vk_dev.c > index 6bfea3210389..ad639ee85b2a 100644 > --- a/drivers/misc/bcm-vk/bcm_vk_dev.c > +++ b/drivers/misc/bcm-vk/bcm_vk_dev.c > @@ -9,6 +9,7 @@ > #include <linux/fs.h> > #include <linux/idr.h> > #include <linux/interrupt.h> > +#include <linux/panic_notifier.h> > #include <linux/kref.h> > #include <linux/module.h> > #include <linux/mutex.h> > diff --git a/drivers/misc/ibmasm/heartbeat.c b/drivers/misc/ibmasm/heartbeat.c > index 4f5f3bdc814d..59c9a0d95659 100644 > --- a/drivers/misc/ibmasm/heartbeat.c > +++ b/drivers/misc/ibmasm/heartbeat.c > @@ -9,6 +9,7 @@ > */ > > #include <linux/notifier.h> > +#include <linux/panic_notifier.h> > #include "ibmasm.h" > #include "dot_command.h" > #include "lowlevel.h" > diff --git a/drivers/misc/pvpanic/pvpanic.c b/drivers/misc/pvpanic/pvpanic.c > index 65f70a4da8c0..793ea0c01193 100644 > --- a/drivers/misc/pvpanic/pvpanic.c > +++ b/drivers/misc/pvpanic/pvpanic.c > @@ -13,6 +13,7 @@ > #include <linux/mod_devicetable.h> > #include <linux/module.h> > #include <linux/platform_device.h> > +#include <linux/panic_notifier.h> > #include <linux/types.h> > #include <linux/cdev.h> > #include <linux/list.h> > diff --git a/drivers/net/ipa/ipa_smp2p.c b/drivers/net/ipa/ipa_smp2p.c > index a5f7a79a1923..34b68dc43886 100644 > --- a/drivers/net/ipa/ipa_smp2p.c > +++ b/drivers/net/ipa/ipa_smp2p.c > @@ -8,6 +8,7 @@ > #include <linux/device.h> > #include <linux/interrupt.h> > #include <linux/notifier.h> > +#include <linux/panic_notifier.h> > #include <linux/soc/qcom/smem.h> > #include <linux/soc/qcom/smem_state.h> > > diff --git a/drivers/parisc/power.c b/drivers/parisc/power.c > index ebaf6867b457..456776bd8ee6 100644 > --- a/drivers/parisc/power.c > +++ b/drivers/parisc/power.c > @@ -38,6 +38,7 @@ > #include <linux/init.h> > #include <linux/kernel.h> > #include <linux/notifier.h> > +#include <linux/panic_notifier.h> > #include <linux/reboot.h> > #include <linux/sched/signal.h> > #include <linux/kthread.h> > diff --git a/drivers/power/reset/ltc2952-poweroff.c b/drivers/power/reset/ltc2952-poweroff.c > index d1495af30081..8688c8ba8894 100644 > --- a/drivers/power/reset/ltc2952-poweroff.c > +++ b/drivers/power/reset/ltc2952-poweroff.c > @@ -52,6 +52,7 @@ > #include <linux/slab.h> > #include <linux/kmod.h> > #include <linux/module.h> > +#include <linux/panic_notifier.h> > #include <linux/mod_devicetable.h> > #include <linux/gpio/consumer.h> > #include <linux/reboot.h> > diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c > index 626a6b90fba2..76dd8e2b1e7e 100644 > --- a/drivers/remoteproc/remoteproc_core.c > +++ b/drivers/remoteproc/remoteproc_core.c > @@ -20,6 +20,7 @@ > #include <linux/kernel.h> > #include <linux/module.h> > #include <linux/device.h> > +#include <linux/panic_notifier.h> > #include <linux/slab.h> > #include <linux/mutex.h> > #include <linux/dma-map-ops.h> > diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c > index 1fd5bca9fa20..02523f4e29f4 100644 > --- a/drivers/s390/char/con3215.c > +++ b/drivers/s390/char/con3215.c > @@ -19,6 +19,7 @@ > #include <linux/console.h> > #include <linux/interrupt.h> > #include <linux/err.h> > +#include <linux/panic_notifier.h> > #include <linux/reboot.h> > #include <linux/serial.h> /* ASYNC_* flags */ > #include <linux/slab.h> > diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c > index e21962c0fd94..87cdbace1453 100644 > --- a/drivers/s390/char/con3270.c > +++ b/drivers/s390/char/con3270.c > @@ -13,6 +13,7 @@ > #include <linux/init.h> > #include <linux/interrupt.h> > #include <linux/list.h> > +#include <linux/panic_notifier.h> > #include <linux/types.h> > #include <linux/slab.h> > #include <linux/err.h> > diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c > index 986bbbc23d0a..6627820a5eb9 100644 > --- a/drivers/s390/char/sclp.c > +++ b/drivers/s390/char/sclp.c > @@ -11,6 +11,7 @@ > #include <linux/kernel_stat.h> > #include <linux/module.h> > #include <linux/err.h> > +#include <linux/panic_notifier.h> > #include <linux/spinlock.h> > #include <linux/interrupt.h> > #include <linux/timer.h> > diff --git a/drivers/s390/char/sclp_con.c b/drivers/s390/char/sclp_con.c > index 9b852a47ccc1..cc01a7b8595d 100644 > --- a/drivers/s390/char/sclp_con.c > +++ b/drivers/s390/char/sclp_con.c > @@ -10,6 +10,7 @@ > #include <linux/kmod.h> > #include <linux/console.h> > #include <linux/init.h> > +#include <linux/panic_notifier.h> > #include <linux/timer.h> > #include <linux/jiffies.h> > #include <linux/termios.h> > diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c > index 7f4445b0f819..5b8a7b090a97 100644 > --- a/drivers/s390/char/sclp_vt220.c > +++ b/drivers/s390/char/sclp_vt220.c > @@ -9,6 +9,7 @@ > > #include <linux/module.h> > #include <linux/spinlock.h> > +#include <linux/panic_notifier.h> > #include <linux/list.h> > #include <linux/wait.h> > #include <linux/timer.h> > diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c > index bd3c724bf695..b5b0848da93b 100644 > --- a/drivers/s390/char/zcore.c > +++ b/drivers/s390/char/zcore.c > @@ -15,6 +15,7 @@ > #include <linux/init.h> > #include <linux/slab.h> > #include <linux/debugfs.h> > +#include <linux/panic_notifier.h> > #include <linux/reboot.h> > > #include <asm/asm-offsets.h> > diff --git a/drivers/soc/bcm/brcmstb/pm/pm-arm.c b/drivers/soc/bcm/brcmstb/pm/pm-arm.c > index a673fdffe216..3cbb165d6e30 100644 > --- a/drivers/soc/bcm/brcmstb/pm/pm-arm.c > +++ b/drivers/soc/bcm/brcmstb/pm/pm-arm.c > @@ -28,6 +28,7 @@ > #include <linux/notifier.h> > #include <linux/of.h> > #include <linux/of_address.h> > +#include <linux/panic_notifier.h> > #include <linux/platform_device.h> > #include <linux/pm.h> > #include <linux/printk.h> > diff --git a/drivers/staging/olpc_dcon/olpc_dcon.c b/drivers/staging/olpc_dcon/olpc_dcon.c > index 6d8e9a481786..7284cb4ac395 100644 > --- a/drivers/staging/olpc_dcon/olpc_dcon.c > +++ b/drivers/staging/olpc_dcon/olpc_dcon.c > @@ -22,6 +22,7 @@ > #include <linux/device.h> > #include <linux/uaccess.h> > #include <linux/ctype.h> > +#include <linux/panic_notifier.h> > #include <linux/reboot.h> > #include <linux/olpc-ec.h> > #include <asm/tsc.h> > diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c > index a7e6eea2c4a1..23999df52739 100644 > --- a/drivers/video/fbdev/hyperv_fb.c > +++ b/drivers/video/fbdev/hyperv_fb.c > @@ -52,6 +52,7 @@ > #include <linux/completion.h> > #include <linux/fb.h> > #include <linux/pci.h> > +#include <linux/panic_notifier.h> > #include <linux/efi.h> > #include <linux/console.h> > > diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h > index b402494883b6..f152b9bb916f 100644 > --- a/include/asm-generic/bug.h > +++ b/include/asm-generic/bug.h > @@ -17,7 +17,8 @@ > #endif > > #ifndef __ASSEMBLY__ > -#include <linux/kernel.h> > +#include <linux/panic.h> > +#include <linux/printk.h> > > #ifdef CONFIG_BUG > > diff --git a/include/linux/kernel.h b/include/linux/kernel.h > index 15d8bad3d2f2..50f4a57cf50c 100644 > --- a/include/linux/kernel.h > +++ b/include/linux/kernel.h > @@ -14,6 +14,7 @@ > #include <linux/math.h> > #include <linux/minmax.h> > #include <linux/typecheck.h> > +#include <linux/panic.h> > #include <linux/printk.h> > #include <linux/build_bug.h> > #include <linux/static_call_types.h> > @@ -72,7 +73,6 @@ > #define lower_32_bits(n) ((u32)((n) & 0xffffffff)) > > struct completion; > -struct pt_regs; > struct user; > > #ifdef CONFIG_PREEMPT_VOLUNTARY > @@ -177,14 +177,6 @@ void __might_fault(const char *file, int line); > static inline void might_fault(void) { } > #endif > > -extern struct atomic_notifier_head panic_notifier_list; > -extern long (*panic_blink)(int state); > -__printf(1, 2) > -void panic(const char *fmt, ...) __noreturn __cold; > -void nmi_panic(struct pt_regs *regs, const char *msg); > -extern void oops_enter(void); > -extern void oops_exit(void); > -extern bool oops_may_print(void); > void do_exit(long error_code) __noreturn; > void complete_and_exit(struct completion *, long) __noreturn; > > @@ -370,52 +362,8 @@ extern int __kernel_text_address(unsigned long addr); > extern int kernel_text_address(unsigned long addr); > extern int func_ptr_is_kernel_text(void *ptr); > > -#ifdef CONFIG_SMP > -extern unsigned int sysctl_oops_all_cpu_backtrace; > -#else > -#define sysctl_oops_all_cpu_backtrace 0 > -#endif /* CONFIG_SMP */ > - > extern void bust_spinlocks(int yes); > -extern int panic_timeout; > -extern unsigned long panic_print; > -extern int panic_on_oops; > -extern int panic_on_unrecovered_nmi; > -extern int panic_on_io_nmi; > -extern int panic_on_warn; > -extern unsigned long panic_on_taint; > -extern bool panic_on_taint_nousertaint; > -extern int sysctl_panic_on_rcu_stall; > -extern int sysctl_max_rcu_stall_to_panic; > -extern int sysctl_panic_on_stackoverflow; > - > -extern bool crash_kexec_post_notifiers; > > -/* > - * panic_cpu is used for synchronizing panic() and crash_kexec() execution. It > - * holds a CPU number which is executing panic() currently. A value of > - * PANIC_CPU_INVALID means no CPU has entered panic() or crash_kexec(). > - */ > -extern atomic_t panic_cpu; > -#define PANIC_CPU_INVALID -1 > - > -/* > - * Only to be used by arch init code. If the user over-wrote the default > - * CONFIG_PANIC_TIMEOUT, honor it. > - */ > -static inline void set_arch_panic_timeout(int timeout, int arch_default_timeout) > -{ > - if (panic_timeout == arch_default_timeout) > - panic_timeout = timeout; > -} > -extern const char *print_tainted(void); > -enum lockdep_ok { > - LOCKDEP_STILL_OK, > - LOCKDEP_NOW_UNRELIABLE > -}; > -extern void add_taint(unsigned flag, enum lockdep_ok); > -extern int test_taint(unsigned flag); > -extern unsigned long get_taint(void); > extern int root_mountflags; > > extern bool early_boot_irqs_disabled; > @@ -434,36 +382,6 @@ extern enum system_states { > SYSTEM_SUSPEND, > } system_state; > > -/* This cannot be an enum because some may be used in assembly source. */ > -#define TAINT_PROPRIETARY_MODULE 0 > -#define TAINT_FORCED_MODULE 1 > -#define TAINT_CPU_OUT_OF_SPEC 2 > -#define TAINT_FORCED_RMMOD 3 > -#define TAINT_MACHINE_CHECK 4 > -#define TAINT_BAD_PAGE 5 > -#define TAINT_USER 6 > -#define TAINT_DIE 7 > -#define TAINT_OVERRIDDEN_ACPI_TABLE 8 > -#define TAINT_WARN 9 > -#define TAINT_CRAP 10 > -#define TAINT_FIRMWARE_WORKAROUND 11 > -#define TAINT_OOT_MODULE 12 > -#define TAINT_UNSIGNED_MODULE 13 > -#define TAINT_SOFTLOCKUP 14 > -#define TAINT_LIVEPATCH 15 > -#define TAINT_AUX 16 > -#define TAINT_RANDSTRUCT 17 > -#define TAINT_FLAGS_COUNT 18 > -#define TAINT_FLAGS_MAX ((1UL << TAINT_FLAGS_COUNT) - 1) > - > -struct taint_flag { > - char c_true; /* character printed when tainted */ > - char c_false; /* character printed when not tainted */ > - bool module; /* also show as a per-module taint flag */ > -}; > - > -extern const struct taint_flag taint_flags[TAINT_FLAGS_COUNT]; > - > extern const char hex_asc[]; > #define hex_asc_lo(x) hex_asc[((x) & 0x0f)] > #define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4] > diff --git a/include/linux/panic.h b/include/linux/panic.h > new file mode 100644 > index 000000000000..f5844908a089 > --- /dev/null > +++ b/include/linux/panic.h > @@ -0,0 +1,98 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +#ifndef _LINUX_PANIC_H > +#define _LINUX_PANIC_H > + > +#include <linux/compiler_attributes.h> > +#include <linux/types.h> > + > +struct pt_regs; > + > +extern long (*panic_blink)(int state); > +__printf(1, 2) > +void panic(const char *fmt, ...) __noreturn __cold; > +void nmi_panic(struct pt_regs *regs, const char *msg); > +extern void oops_enter(void); > +extern void oops_exit(void); > +extern bool oops_may_print(void); > + > +#ifdef CONFIG_SMP > +extern unsigned int sysctl_oops_all_cpu_backtrace; > +#else > +#define sysctl_oops_all_cpu_backtrace 0 > +#endif /* CONFIG_SMP */ > + > +extern int panic_timeout; > +extern unsigned long panic_print; > +extern int panic_on_oops; > +extern int panic_on_unrecovered_nmi; > +extern int panic_on_io_nmi; > +extern int panic_on_warn; > + > +extern unsigned long panic_on_taint; > +extern bool panic_on_taint_nousertaint; > + > +extern int sysctl_panic_on_rcu_stall; > +extern int sysctl_max_rcu_stall_to_panic; > +extern int sysctl_panic_on_stackoverflow; > + > +extern bool crash_kexec_post_notifiers; > + > +/* > + * panic_cpu is used for synchronizing panic() and crash_kexec() execution. It > + * holds a CPU number which is executing panic() currently. A value of > + * PANIC_CPU_INVALID means no CPU has entered panic() or crash_kexec(). > + */ > +extern atomic_t panic_cpu; > +#define PANIC_CPU_INVALID -1 > + > +/* > + * Only to be used by arch init code. If the user over-wrote the default > + * CONFIG_PANIC_TIMEOUT, honor it. > + */ > +static inline void set_arch_panic_timeout(int timeout, int arch_default_timeout) > +{ > + if (panic_timeout == arch_default_timeout) > + panic_timeout = timeout; > +} > + > +/* This cannot be an enum because some may be used in assembly source. */ > +#define TAINT_PROPRIETARY_MODULE 0 > +#define TAINT_FORCED_MODULE 1 > +#define TAINT_CPU_OUT_OF_SPEC 2 > +#define TAINT_FORCED_RMMOD 3 > +#define TAINT_MACHINE_CHECK 4 > +#define TAINT_BAD_PAGE 5 > +#define TAINT_USER 6 > +#define TAINT_DIE 7 > +#define TAINT_OVERRIDDEN_ACPI_TABLE 8 > +#define TAINT_WARN 9 > +#define TAINT_CRAP 10 > +#define TAINT_FIRMWARE_WORKAROUND 11 > +#define TAINT_OOT_MODULE 12 > +#define TAINT_UNSIGNED_MODULE 13 > +#define TAINT_SOFTLOCKUP 14 > +#define TAINT_LIVEPATCH 15 > +#define TAINT_AUX 16 > +#define TAINT_RANDSTRUCT 17 > +#define TAINT_FLAGS_COUNT 18 > +#define TAINT_FLAGS_MAX ((1UL << TAINT_FLAGS_COUNT) - 1) > + > +struct taint_flag { > + char c_true; /* character printed when tainted */ > + char c_false; /* character printed when not tainted */ > + bool module; /* also show as a per-module taint flag */ > +}; > + > +extern const struct taint_flag taint_flags[TAINT_FLAGS_COUNT]; > + > +enum lockdep_ok { > + LOCKDEP_STILL_OK, > + LOCKDEP_NOW_UNRELIABLE, > +}; > + > +extern const char *print_tainted(void); > +extern void add_taint(unsigned flag, enum lockdep_ok); > +extern int test_taint(unsigned flag); > +extern unsigned long get_taint(void); > + > +#endif /* _LINUX_PANIC_H */ > diff --git a/include/linux/panic_notifier.h b/include/linux/panic_notifier.h > new file mode 100644 > index 000000000000..41e32483d7a7 > --- /dev/null > +++ b/include/linux/panic_notifier.h > @@ -0,0 +1,12 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +#ifndef _LINUX_PANIC_NOTIFIERS_H > +#define _LINUX_PANIC_NOTIFIERS_H > + > +#include <linux/notifier.h> > +#include <linux/types.h> > + > +extern struct atomic_notifier_head panic_notifier_list; > + > +extern bool crash_kexec_post_notifiers; > + > +#endif /* _LINUX_PANIC_NOTIFIERS_H */ > diff --git a/kernel/hung_task.c b/kernel/hung_task.c > index bb2e3e15c84c..2871076e4d29 100644 > --- a/kernel/hung_task.c > +++ b/kernel/hung_task.c > @@ -15,6 +15,7 @@ > #include <linux/kthread.h> > #include <linux/lockdep.h> > #include <linux/export.h> > +#include <linux/panic_notifier.h> > #include <linux/sysctl.h> > #include <linux/suspend.h> > #include <linux/utsname.h> > diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c > index f099baee3578..4b34a9aa32bc 100644 > --- a/kernel/kexec_core.c > +++ b/kernel/kexec_core.c > @@ -26,6 +26,7 @@ > #include <linux/suspend.h> > #include <linux/device.h> > #include <linux/freezer.h> > +#include <linux/panic_notifier.h> > #include <linux/pm.h> > #include <linux/cpu.h> > #include <linux/uaccess.h> > diff --git a/kernel/panic.c b/kernel/panic.c > index 332736a72a58..edad89660a2b 100644 > --- a/kernel/panic.c > +++ b/kernel/panic.c > @@ -23,6 +23,7 @@ > #include <linux/reboot.h> > #include <linux/delay.h> > #include <linux/kexec.h> > +#include <linux/panic_notifier.h> > #include <linux/sched.h> > #include <linux/sysrq.h> > #include <linux/init.h> > diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c > index 3a5fef9fc934..faa847ce28cd 100644 > --- a/kernel/rcu/tree.c > +++ b/kernel/rcu/tree.c > @@ -32,6 +32,8 @@ > #include <linux/export.h> > #include <linux/completion.h> > #include <linux/moduleparam.h> > +#include <linux/panic.h> > +#include <linux/panic_notifier.h> > #include <linux/percpu.h> > #include <linux/notifier.h> > #include <linux/cpu.h> > diff --git a/kernel/sysctl.c b/kernel/sysctl.c > index 6e0b77f1117c..304be14fa09b 100644 > --- a/kernel/sysctl.c > +++ b/kernel/sysctl.c > @@ -27,6 +27,7 @@ > #include <linux/sysctl.h> > #include <linux/bitmap.h> > #include <linux/signal.h> > +#include <linux/panic.h> > #include <linux/printk.h> > #include <linux/proc_fs.h> > #include <linux/security.h> > diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c > index 560e4c8d3825..1c4e702133e8 100644 > --- a/kernel/trace/trace.c > +++ b/kernel/trace/trace.c > @@ -39,6 +39,7 @@ > #include <linux/slab.h> > #include <linux/ctype.h> > #include <linux/init.h> > +#include <linux/panic_notifier.h> > #include <linux/poll.h> > #include <linux/nmi.h> > #include <linux/fs.h> > -- > 2.30.2 >

5 years, 4 months

Re: [PATCH v3 1/1] kernel.h: Split out panic and oops helpers

by Alex Elder

On 5/11/21 2:41 AM, Andy Shevchenko wrote: > kernel.h is being used as a dump for all kinds of stuff for a long time. > Here is the attempt to start cleaning it up by splitting out panic and > oops helpers. > > There are several purposes of doing this: > - dropping dependency in bug.h > - dropping a loop by moving out panic_notifier.h > - unload kernel.h from something which has its own domain > > At the same time convert users tree-wide to use new headers, although > for the time being include new header back to kernel.h to avoid twisted > indirected includes for existing users. > > Signed-off-by: Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> > Reviewed-by: Bjorn Andersson <bjorn.andersson(a)linaro.org> > Acked-by: Mike Rapoport <rppt(a)linux.ibm.com> > Acked-by: Corey Minyard <cminyard(a)mvista.com> > Acked-by: Christian Brauner <christian.brauner(a)ubuntu.com> > Acked-by: Arnd Bergmann <arnd(a)arndb.de> > Acked-by: Kees Cook <keescook(a)chromium.org> > Acked-by: Wei Liu <wei.liu(a)kernel.org> > Acked-by: Rasmus Villemoes <linux(a)rasmusvillemoes.dk> > Co-developed-by: Andrew Morton <akpm(a)linux-foundation.org> > Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> > Acked-by: Sebastian Reichel <sre(a)kernel.org> > Acked-by: Luis Chamberlain <mcgrof(a)kernel.org> > Acked-by: Stephen Boyd <sboyd(a)kernel.org> > Acked-by: Thomas Bogendoerfer <tsbogend(a)alpha.franken.de> > Acked-by: Helge Deller <deller(a)gmx.de> # parisc > --- > v3: rebased on top of v5.13-rc1, collected a few more tags > > Note WRT Andrew's SoB tag above: I have added it since part of the cases > I took from him. Andrew, feel free to amend or tell me how you want me > to do. > Acked-by: Alex Elder <elder(a)kernel.org> . . . > diff --git a/drivers/net/ipa/ipa_smp2p.c b/drivers/net/ipa/ipa_smp2p.c > index a5f7a79a1923..34b68dc43886 100644 > --- a/drivers/net/ipa/ipa_smp2p.c > +++ b/drivers/net/ipa/ipa_smp2p.c > @@ -8,6 +8,7 @@ > #include <linux/device.h> > #include <linux/interrupt.h> > #include <linux/notifier.h> > +#include <linux/panic_notifier.h> > #include <linux/soc/qcom/smem.h> > #include <linux/soc/qcom/smem_state.h> > . . .

5 years, 4 months

[PATCH 11/53] docs: trace: coresight: coresight-etm4x-reference.rst: avoid using UTF-8 chars

by Mauro Carvalho Chehab

While UTF-8 characters can be used at the Linux documentation, the best is to use them only when ASCII doesn't offer a good replacement. So, replace the occurences of the following UTF-8 characters: - U+00a0 (' '): NO-BREAK SPACE - U+2018 ('‘'): LEFT SINGLE QUOTATION MARK - U+2019 ('’'): RIGHT SINGLE QUOTATION MARK Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei(a)kernel.org> --- .../coresight/coresight-etm4x-reference.rst | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/Documentation/trace/coresight/coresight-etm4x-reference.rst b/Documentation/trace/coresight/coresight-etm4x-reference.rst index b64d9a9c79df..e8ddfc144d9a 100644 --- a/Documentation/trace/coresight/coresight-etm4x-reference.rst +++ b/Documentation/trace/coresight/coresight-etm4x-reference.rst @@ -15,14 +15,14 @@ Root: ``/sys/bus/coresight/devices/etm<N>`` The following paragraphs explain the association between sysfs files and the ETMv4 registers that they effect. Note the register names are given without -the ‘TRC’ prefix. +the 'TRC' prefix. ---- :File: ``mode`` (rw) :Trace Registers: {CONFIGR + others} :Notes: - Bit select trace features. See ‘mode’ section below. Bits + Bit select trace features. See 'mode' section below. Bits in this will cause equivalent programming of trace config and other registers to enable the features requested. @@ -89,7 +89,7 @@ the ‘TRC’ prefix. :Notes: Pair of addresses for a range selected by addr_idx. Include / exclude according to the optional parameter, or if omitted - uses the current ‘mode’ setting. Select comparator range in + uses the current 'mode' setting. Select comparator range in control register. Error if index is odd value. :Depends: ``mode, addr_idx`` @@ -277,7 +277,7 @@ the ‘TRC’ prefix. :Trace Registers: VICTLR{23:20} :Notes: Program non-secure exception level filters. Set / clear NS - exception filter bits. Setting ‘1’ excludes trace from the + exception filter bits. Setting '1' excludes trace from the exception level. :Syntax: @@ -427,7 +427,7 @@ the ‘TRC’ prefix. :Syntax: ``echo idx > vmid_idx`` - Where idx < numvmidc + Where idx < numvmidc ---- @@ -628,7 +628,7 @@ the reset parameter:: -The ‘mode’ sysfs parameter. +The 'mode' sysfs parameter. --------------------------- This is a bitfield selection parameter that sets the overall trace mode for the @@ -696,7 +696,7 @@ Bit assignments shown below:- ETM_MODE_QELEM(val) **description:** - ‘val’ determines level of Q element support enabled if + 'val' determines level of Q element support enabled if implemented by the ETM [IDR0] @@ -780,7 +780,7 @@ Bit assignments shown below:- ---- *Note a)* On startup the ETM is programmed to trace the complete address space -using address range comparator 0. ‘mode’ bits 30 / 31 modify this setting to +using address range comparator 0. 'mode' bits 30 / 31 modify this setting to set EL exclude bits for NS state in either user space (EL0) or kernel space (EL1) in the address range comparator. (the default setting excludes all secure EL, and NS EL2) -- 2.30.2

5 years, 5 months

Re: [PATCH v1 2/2] dt-bindings: arm: add property for coresight component name

by taozha＠codeaurora.org

On 2021-04-16 22:47, Mike Leach wrote: > Hi > > On Fri, 16 Apr 2021 at 15:16, <taozha(a)codeaurora.org> wrote: >> >> On 2021-04-16 19:23, Alexander Shishkin wrote: >> > Tao Zhang <taozha(a)codeaurora.org> writes: >> > >> >> Add property "coresight-name" for coresight component name. This >> >> allows coresight driver to read device name from device entries. >> >> >> >> Signed-off-by: Tao Zhang <taozha(a)codeaurora.org> >> >> --- >> >> Documentation/devicetree/bindings/arm/coresight.txt | 2 ++ >> >> 1 file changed, 2 insertions(+) >> >> >> >> diff --git a/Documentation/devicetree/bindings/arm/coresight.txt >> >> b/Documentation/devicetree/bindings/arm/coresight.txt >> >> index d711676..0e980ce 100644 >> >> --- a/Documentation/devicetree/bindings/arm/coresight.txt >> >> +++ b/Documentation/devicetree/bindings/arm/coresight.txt >> >> @@ -103,6 +103,8 @@ its hardware characteristcs. >> >> powers down the coresight component also powers down and loses its >> >> context. This property is currently only used for the ETM 4.x >> >> driver. >> >> >> >> + * coresight-name: the name of the coresight devices. >> > >> > Which devices? Also, is it a common practice to extend device tree >> > definitions based on arbitrary driver needs, or should there be some >> > sort of a discussion first? >> > >> > Regards, >> > -- >> > Alex >> Through the device tree entries, we can define their own name for any >> coresight device. This design is mainly used to facilitate the unified >> naming of coresight devgies across targets. e.g, without this patch, >> we >> can only see from sysFS there are multiple funnels, but we cannot know >> which funnel it is based on their names from sysFS. After applying >> this >> patch, we can directly know what device it is by observing the device >> name in sysFS. And the common scripts can be developed, since applying >> this patch, the same coresight device can have the same name across >> targets. Each developer or vendor can define the name of each >> coresight >> device according to their preferences and products. >> >> Tao > > 1) I am concerned that this will break the existing protocol which > associates a fixed device type name + number with each device - i.e. > etm0, funnel1 etc. > This naming convention allows for generic common scripts to be > developed - see: > ./tools/perf/tests/shel/test_arm_coresight.sh > This relies on the device type prefixes to iterate across all devices > in a system - and uses the connections links that are present in each > of the devices to determine the topology. > Replacing these with arbitrary names will break existing scripts. > Yes, agree with you. The patch should not break the existing protocol. > 2) Using the current system it is entirely possible to determine which > specific device a given name relates to. > e.g. ls -al /sys/bus/coresight/devices/ > > lrwxrwxrwx 1 root root 0 Apr 14 19:02 cti_cpu0 -> > ../../../devices/platform/soc/858000.cti/cti_cpu0 > lrwxrwxrwx 1 root root 0 Apr 14 19:02 cti_cpu1 -> > ../../../devices/platform/soc/859000.cti/cti_cpu1 > lrwxrwxrwx 1 root root 0 Apr 14 19:02 cti_cpu2 -> > ../../../devices/platform/soc/85a000.cti/cti_cpu2 > lrwxrwxrwx 1 root root 0 Apr 14 19:02 cti_cpu3 -> > ../../../devices/platform/soc/85b000.cti/cti_cpu3 > lrwxrwxrwx 1 root root 0 Apr 14 19:02 cti_sys0 -> > ../../../devices/platform/soc/810000.cti/cti_sys0 > lrwxrwxrwx 1 root root 0 Apr 14 19:02 cti_sys1 -> > ../../../devices/platform/soc/811000.cti/cti_sys1 > lrwxrwxrwx 1 root root 0 Apr 14 19:02 etm0 -> > ../../../devices/platform/soc/85c000.etm/etm0 > lrwxrwxrwx 1 root root 0 Apr 14 19:02 etm1 -> > ../../../devices/platform/soc/85d000.etm/etm1 > lrwxrwxrwx 1 root root 0 Apr 14 19:02 etm2 -> > ../../../devices/platform/soc/85e000.etm/etm2 > lrwxrwxrwx 1 root root 0 Apr 14 19:02 etm3 -> > ../../../devices/platform/soc/85f000.etm/etm3 > lrwxrwxrwx 1 root root 0 Apr 16 14:17 funnel0 -> > ../../../devices/platform/soc/821000.funnel/funnel0 > lrwxrwxrwx 1 root root 0 Apr 16 14:17 funnel1 -> > ../../../devices/platform/soc/841000.funnel/funnel1 > lrwxrwxrwx 1 root root 0 Apr 16 14:17 replicator0 -> > ../../../devices/platform/soc/824000.replicator/replicator0 > lrwxrwxrwx 1 root root 0 Apr 16 14:17 tmc_etf0 -> > ../../../devices/platform/soc/825000.etf/tmc_etf0 > lrwxrwxrwx 1 root root 0 Apr 16 14:17 tmc_etr0 -> > ../../../devices/platform/soc/826000.etr/tmc_etr0 > lrwxrwxrwx 1 root root 0 Apr 16 14:17 tpiu0 -> > ../../../devices/platform/soc/820000.tpiu/tpiu > > Further topology can be determined using the connections sub-directory > in each device:- > > ls -al /sys/bus/coresight/devices/etm0/connections/out\:0 > lrwxrwxrwx 1 root root 0 Apr 16 14:18 > /sys/bus/coresight/devices/etm0/connections/out:0 -> > ../../../841000.funnel/funnel1 > > Using this information it is possible to iterate across the entire > topology of any coresight system. > Yes, these information can iterate across the entire topology of any coresight system. But it cannot quickly identify specific coresight devices across targets. e.g. If there are a lot of cti on one target, we need to identify the cti by its register address. The same function cti may has different register address across targets. This patch allow the same function coresight device has the same name, and it could be operated by scripts easily. > 3) If there is some scripting requirement that cannot be solved with > the information available above - then it would be better to add this > name as an alias rather than a direct replacement. > Therefore any coresight device could have an alias_name entry, that > could be interrogated by a script and used as required. This avoids > breaking any existing scripts using the established naming convention. > Agree with you. Can I use sysfs_create_link to create a kernel link between alias name and coresight device kobject? At the same time, the original coresight device naming method remains unchanged. Thus, the existing protocol will not be broken. Or is there any better suggeston on how to add alias name for coresight device? > 4) Any devicetree attribute should follow the <owner>,<attribute> > naming convention. e.g. arm,some_attribute. > I agree with Alex that it may not be normal practice to add in > attributes in these circumstances - this does not appear to relate to > a specific hardware feature or limitation. You may wish to discuss > this with the device tree maintainers. > > Thanks and Regards > > Mike Sure. I will update this according to your suggestion on patch v2. Best. Tao

5 years, 5 months

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