#
31486372 |
| 13-Nov-2017 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar: "The main changes in this cycle were:
Kernel:
- kprobes update
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar: "The main changes in this cycle were:
Kernel:
- kprobes updates: use better W^X patterns for code modifications, improve optprobes, remove jprobes. (Masami Hiramatsu, Kees Cook)
- core fixes: event timekeeping (enabled/running times statistics) fixes, perf_event_read() locking fixes and cleanups, etc. (Peter Zijlstra)
- Extend x86 Intel free-running PEBS support and support x86 user-register sampling in perf record and perf script. (Andi Kleen)
Tooling:
- Completely rework the way inline frames are handled. Instead of querying for the inline nodes on-demand in the individual tools, we now create proper callchain nodes for inlined frames. (Milian Wolff)
- 'perf trace' updates (Arnaldo Carvalho de Melo)
- Implement a way to print formatted output to per-event files in 'perf script' to facilitate generate flamegraphs, elliminating the need to write scripts to do that separation (yuzhoujian, Arnaldo Carvalho de Melo)
- Update vendor events JSON metrics for Intel's Broadwell, Broadwell Server, Haswell, Haswell Server, IvyBridge, IvyTown, JakeTown, Sandy Bridge, Skylake, SkyLake Server - and Goldmont Plus V1 (Andi Kleen, Kan Liang)
- Multithread the synthesizing of PERF_RECORD_ events for pre-existing threads in 'perf top', speeding up that phase, greatly improving the user experience in systems such as Intel's Knights Mill (Kan Liang)
- Introduce the concept of weak groups in 'perf stat': try to set up a group, but if it's not schedulable fallback to not using a group. That gives us the best of both worlds: groups if they work, but still a usable fallback if they don't. E.g: (Andi Kleen)
- perf sched timehist enhancements (David Ahern)
- ... various other enhancements, updates, cleanups and fixes"
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (139 commits) kprobes: Don't spam the build log with deprecation warnings arm/kprobes: Remove jprobe test case arm/kprobes: Fix kretprobe test to check correct counter perf srcline: Show correct function name for srcline of callchains perf srcline: Fix memory leak in addr2inlines() perf trace beauty kcmp: Beautify arguments perf trace beauty: Implement pid_fd beautifier tools include uapi: Grab a copy of linux/kcmp.h perf callchain: Fix double mapping al->addr for children without self period perf stat: Make --per-thread update shadow stats to show metrics perf stat: Move the shadow stats scale computation in perf_stat__update_shadow_stats perf tools: Add perf_data_file__write function perf tools: Add struct perf_data_file perf tools: Rename struct perf_data_file to perf_data perf script: Print information about per-event-dump files perf trace beauty prctl: Generate 'option' string table from kernel headers tools include uapi: Grab a copy of linux/prctl.h perf script: Allow creating per-event dump files perf evsel: Restore evsel->priv as a tool private area perf script: Use event_format__fprintf() ...
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#
3a485c2b |
| 13-Nov-2017 |
Juergen Gross <jgross@suse.com> |
Merge tag 'v4.14' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Linux 4.14
|
Revision tags: v4.14 |
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#
91de76e6 |
| 23-Oct-2017 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge tag 'v4.14-rc6' into next
Merge with mainline to bring in the timer API changes.
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#
96753522 |
| 20-Oct-2017 |
Ingo Molnar <mingo@kernel.org> |
Merge branch 'x86/urgent' into x86/mm, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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#
36452b8b |
| 12-Oct-2017 |
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> |
Merge tag 'v4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into fbdev-for-next
Linux 4.14-rc4
|
Revision tags: v4.13.5 |
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#
0d3c24e9 |
| 03-Oct-2017 |
Daniel Vetter <daniel.vetter@ffwll.ch> |
Merge airlied/drm-next into drm-misc-next
Just catching up with upstream.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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#
cf09e3c9 |
| 29-Sep-2017 |
Mauro Carvalho Chehab <mchehab@s-opensource.com> |
Merge tag 'v4.14-rc2' into patchwork
Linux 4.14-rc2
* tag 'v4.14-rc2': (12066 commits) Linux 4.14-rc2 tpm: ibmvtpm: simplify crq initialization and document crq format tpm: replace msleep() w
Merge tag 'v4.14-rc2' into patchwork
Linux 4.14-rc2
* tag 'v4.14-rc2': (12066 commits) Linux 4.14-rc2 tpm: ibmvtpm: simplify crq initialization and document crq format tpm: replace msleep() with usleep_range() in TPM 1.2/2.0 generic drivers Documentation: tpm: add powered-while-suspended binding documentation tpm: tpm_crb: constify acpi_device_id. tpm: vtpm: constify vio_device_id security: fix description of values returned by cap_inode_need_killpriv x86/asm: Fix inline asm call constraints for Clang objtool: Handle another GCC stack pointer adjustment bug inet: fix improper empty comparison net: use inet6_rcv_saddr to compare sockets net: set tb->fast_sk_family net: orphan frags on stand-alone ptype in dev_queue_xmit_nit MAINTAINERS: update git tree locations for ieee802154 subsystem SMB3: Don't ignore O_SYNC/O_DSYNC and O_DIRECT flags SMB3: handle new statx fields arch: remove unused *_segments() macros/functions parisc: Unbreak bootloader due to gcc-7 optimizations parisc: Reintroduce option to gzip-compress the kernel apparmor: fix apparmorfs DAC access permissions ...
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#
32f35b86 |
| 28-Sep-2017 |
Jani Nikula <jani.nikula@intel.com> |
Merge drm-upstream/drm-next into drm-intel-next-queued
Need MST sideband message transaction to power up/down nodes.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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#
a19b2e3d |
| 19-Sep-2017 |
Masami Hiramatsu <mhiramat@kernel.org> |
kprobes/x86: Remove IRQ disabling from ftrace-based/optimized kprobes
Kkprobes don't need to disable IRQs if they are called from the ftrace/jump trampoline code, because Documentation/kprobes.txt s
kprobes/x86: Remove IRQ disabling from ftrace-based/optimized kprobes
Kkprobes don't need to disable IRQs if they are called from the ftrace/jump trampoline code, because Documentation/kprobes.txt says:
----- Probe handlers are run with preemption disabled. Depending on the architecture and optimization state, handlers may also run with interrupts disabled (e.g., kretprobe handlers and optimized kprobe handlers run without interrupt disabled on x86/x86-64). -----
So let's remove IRQ disabling from those handlers.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Alexei Starovoitov <ast@fb.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E . McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/150581534039.32348.11331736206004264553.stgit@devbox Signed-off-by: Ingo Molnar <mingo@kernel.org>
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#
9a09f261 |
| 19-Sep-2017 |
Masami Hiramatsu <mhiramat@kernel.org> |
kprobes/x86: Disable preemption in optprobe
Disable preemption in optprobe handler as described in Documentation/kprobes.txt, which says:
"Probe handlers are run with preemption disabled."
Signe
kprobes/x86: Disable preemption in optprobe
Disable preemption in optprobe handler as described in Documentation/kprobes.txt, which says:
"Probe handlers are run with preemption disabled."
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Alexei Starovoitov <ast@fb.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E . McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/150581525942.32348.6359217983269060829.stgit@devbox Signed-off-by: Ingo Molnar <mingo@kernel.org>
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#
cd52edad |
| 19-Sep-2017 |
Masami Hiramatsu <mhiramat@kernel.org> |
kprobes/x86: Move the get_kprobe_ctlblk() into irq-disabled block
Since get_kprobe_ctlblk() accesses per-cpu variables which calls smp_processor_id(), it must be called under preempt-disabled or irq
kprobes/x86: Move the get_kprobe_ctlblk() into irq-disabled block
Since get_kprobe_ctlblk() accesses per-cpu variables which calls smp_processor_id(), it must be called under preempt-disabled or irq-disabled.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Alexei Starovoitov <ast@fb.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E . McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/150581517952.32348.2655896843219158446.stgit@devbox Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Revision tags: v4.13 |
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#
a8976fc8 |
| 18-Aug-2017 |
Masami Hiramatsu <mhiramat@kernel.org> |
kprobes/x86: Remove addressof() operators
The following commit:
54a7d50b9205 ("x86: mark kprobe templates as character arrays, not single characters")
changed optprobe_template_* to arrays, so w
kprobes/x86: Remove addressof() operators
The following commit:
54a7d50b9205 ("x86: mark kprobe templates as character arrays, not single characters")
changed optprobe_template_* to arrays, so we can remove the addressof() operators from those symbols.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David S . Miller <davem@davemloft.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/150304469798.17009.15886717935027472863.stgit@devbox Signed-off-by: Ingo Molnar <mingo@kernel.org>
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#
63fef14f |
| 18-Aug-2017 |
Masami Hiramatsu <mhiramat@kernel.org> |
kprobes/x86: Make insn buffer always ROX and use text_poke()
Make insn buffer always ROX and use text_poke() to write the copied instructions instead of set_memory_*(). This makes instruction buffer
kprobes/x86: Make insn buffer always ROX and use text_poke()
Make insn buffer always ROX and use text_poke() to write the copied instructions instead of set_memory_*(). This makes instruction buffer stronger against other kernel subsystems because there is no window time to modify the buffer.
Suggested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David S . Miller <davem@davemloft.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/150304463032.17009.14195368040691676813.stgit@devbox Signed-off-by: Ingo Molnar <mingo@kernel.org>
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#
0d9c2ff1 |
| 25-Sep-2017 |
Doug Ledford <dledford@redhat.com> |
Merge tag 'v4.14-rc2' into k.o/for-next
Merge my for-next branch to Linux 4.14-rc2 and open up the for-next area for 4.15 kernel development.
Signed-off-by: Doug Ledford <dledford@redhat.com>
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#
25eabb13 |
| 25-Sep-2017 |
James Morris <james.l.morris@oracle.com> |
Merge tag 'v4.14-rc2' into next-general
Linux 4.14-rc2
Sync to v4.14-rc2 for security subsystem developers to track.
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#
95a0c7c2 |
| 21-Sep-2017 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge tag 'ib-mfd-many-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into next
Merge "Immutable branch between MFD and many other subsystems due for the v4.14 merge window" to get
Merge tag 'ib-mfd-many-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into next
Merge "Immutable branch between MFD and many other subsystems due for the v4.14 merge window" to get the TWL headers moved to the right place.
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#
1ebfc603 |
| 21-Sep-2017 |
Sean Paul <seanpaul@chromium.org> |
Merge remote-tracking branch 'origin/master' into drm-misc-fixes
Pick up 4.14-rc1
Signed-off-by: Sean Paul <seanpaul@chromium.org>
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#
e9331ee9 |
| 19-Sep-2017 |
Mark Brown <broonie@kernel.org> |
Merge tag 'v4.14-rc1' into asoc-rockchip
Linux 4.14-rc1
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#
e558bdc2 |
| 09-Sep-2017 |
Russell King <rmk+kernel@armlinux.org.uk> |
Merge branches 'fixes' and 'misc' into for-linus
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#
9657752c |
| 04-Sep-2017 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar: "Kernel side changes:
- Add branch type profiling/tracing support
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar: "Kernel side changes:
- Add branch type profiling/tracing support. (Jin Yao)
- Add the PERF_SAMPLE_PHYS_ADDR ABI to allow the tracing/profiling of physical memory addresses, where the PMU supports it. (Kan Liang)
- Export some PMU capability details in the new /sys/bus/event_source/devices/cpu/caps/ sysfs directory. (Andi Kleen)
- Aux data fixes and updates (Will Deacon)
- kprobes fixes and updates (Masami Hiramatsu)
- AMD uncore PMU driver fixes and updates (Janakarajan Natarajan)
On the tooling side, here's a (limited!) list of highlights - there were many other changes that I could not list, see the shortlog and git history for details:
UI improvements:
- Implement a visual marker for fused x86 instructions in the annotate TUI browser, available now in 'perf report', more work needed to have it available as well in 'perf top' (Jin Yao)
Further explanation from one of Jin's patches:
│ ┌──cmpl $0x0,argp_program_version_hook 81.93 │ ├──je 20 │ │ lock cmpxchg %esi,0x38a9a4(%rip) │ │↓ jne 29 │ │↓ jmp 43 11.47 │20:└─→cmpxch %esi,0x38a999(%rip)
That means the cmpl+je is a fused instruction pair and they should be considered together.
- Record the branch type and then show statistics and info about in callchain entries (Jin Yao)
Example from one of Jin's patches:
# perf record -g -j any,save_type # perf report --branch-history --stdio --no-children
38.50% div.c:45 [.] main div | ---main div.c:42 (RET CROSS_2M cycles:2) compute_flag div.c:28 (cycles:2) compute_flag div.c:27 (RET CROSS_2M cycles:1) rand rand.c:28 (cycles:1) rand rand.c:28 (RET CROSS_2M cycles:1) __random random.c:298 (cycles:1) __random random.c:297 (COND_BWD CROSS_2M cycles:1) __random random.c:295 (cycles:1) __random random.c:295 (COND_BWD CROSS_2M cycles:1) __random random.c:295 (cycles:1) __random random.c:295 (RET CROSS_2M cycles:9)
namespaces support:
- Add initial support for namespaces, using setns to access files in namespaces, grabbing their build-ids, etc. (Krister Johansen)
perf trace enhancements:
- Beautify pkey_{alloc,free,mprotect} arguments in 'perf trace' (Arnaldo Carvalho de Melo)
- Add initial 'clone' syscall args beautifier in 'perf trace' (Arnaldo Carvalho de Melo)
- Ignore 'fd' and 'offset' args for MAP_ANONYMOUS in 'perf trace' (Arnaldo Carvalho de Melo)
- Beautifiers for the 'cmd' arg of several ioctl types, including: sound, DRM, KVM, vhost virtio and perf_events. (Arnaldo Carvalho de Melo)
- Add PERF_SAMPLE_CALLCHAIN and PERF_RECORD_MMAP[2] to 'perf data' CTF conversion, allowing CTF trace visualization tools to show callchains and to resolve symbols (Geneviève Bastien)
- Beautify the fcntl syscall, which is an interesting one in the sense that infrastructure had to be put in place to change the formatters of some arguments according to the value in a previous one, i.e. cmd dictates how arg and the syscall return will be formatted. (Arnaldo Carvalho de Melo
perf stat enhancements:
- Use group read for event groups in 'perf stat', reducing overhead when groups are defined in the event specification, i.e. when using {} to enclose a list of events, asking them to be read at the same time, e.g.: "perf stat -e '{cycles,instructions}'" (Jiri Olsa)
pipe mode improvements:
- Process tracing data in 'perf annotate' pipe mode (David Carrillo-Cisneros)
- Add header record types to pipe-mode, now this command:
$ perf record -o - -e cycles sleep 1 | perf report --stdio --header
Will show the same as in non-pipe mode, i.e. involving a perf.data file (David Carrillo-Cisneros)
Vendor specific hardware event support updates/enhancements:
- Update POWER9 vendor events tables (Sukadev Bhattiprolu)
- Add POWER9 PMU events Sukadev (Bhattiprolu)
- Support additional POWER8+ PVR in PMU mapfile (Shriya)
- Add Skylake server uncore JSON vendor events (Andi Kleen)
- Support exporting Intel PT data to sqlite3 with python perf scripts, this is in addition to the postgresql support that was already there (Adrian Hunter)"
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (253 commits) perf symbols: Fix plt entry calculation for ARM and AARCH64 perf probe: Fix kprobe blacklist checking condition perf/x86: Fix caps/ for !Intel perf/core, x86: Add PERF_SAMPLE_PHYS_ADDR perf/core, pt, bts: Get rid of itrace_started perf trace beauty: Beautify pkey_{alloc,free,mprotect} arguments tools headers: Sync cpu features kernel ABI headers with tooling headers perf tools: Pass full path of FEATURES_DUMP perf tools: Robustify detection of clang binary tools lib: Allow external definition of CC, AR and LD perf tools: Allow external definition of flex and bison binary names tools build tests: Don't hardcode gcc name perf report: Group stat values on global event id perf values: Zero value buffers perf values: Fix allocation check perf values: Fix thread index bug perf report: Add dump_read function perf record: Set read_format for inherit_stat perf c2c: Fix remote HITM detection for Skylake perf tools: Fix static build with newer toolchains ...
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#
1724c7c0 |
| 14-Aug-2017 |
Sean Paul <seanpaul@chromium.org> |
Merge origin/master into drm-misc-fixes
Backmerge 4.13-rc5 into drm-misc-fixes, it was getting a little stale.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
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#
c002c278 |
| 10-Aug-2017 |
Tony Lindgren <tony@atomide.com> |
Merge tag 'v4.13-rc1' into omap-for-v4.14/mmc-regulator
Linux v4.13-rc1
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#
d9f5f32a |
| 02-Aug-2017 |
Masami Hiramatsu <mhiramat@kernel.org> |
kprobes/x86: Do not jump-optimize kprobes on irq entry code
Since the kernel segment registers are not prepared at the entry of irq-entry code, if a kprobe on such code is jump-optimized, accessing
kprobes/x86: Do not jump-optimize kprobes on irq entry code
Since the kernel segment registers are not prepared at the entry of irq-entry code, if a kprobe on such code is jump-optimized, accessing per-CPU variables may cause a kernel panic.
However, if the kprobe is not optimized, it triggers an int3 exception and sets segment registers correctly.
With this patch we check the probe-address and if it is in the irq-entry code, it prohibits optimizing such kprobes.
This means we can continue probing such interrupt handlers by kprobes but it is not optimized anymore.
Reported-by: Francis Deslauriers <francis.deslauriers@efficios.com> Tested-by: Francis Deslauriers <francis.deslauriers@efficios.com> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: Chris Zankel <chris@zankel.net> Cc: David S . Miller <davem@davemloft.net> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: linux-arch@vger.kernel.org Cc: linux-cris-kernel@axis.com Cc: mathieu.desnoyers@efficios.com Link: http://lkml.kernel.org/r/150172795654.27216.9824039077047777477.stgit@devbox Signed-off-by: Ingo Molnar <mingo@kernel.org>
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#
74be62c7 |
| 04-Aug-2017 |
Takashi Iwai <tiwai@suse.de> |
Merge branch 'for-linus' into for-next
Back-merge 4.13-rc devel branch for later development.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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#
5ef26e96 |
| 02-Aug-2017 |
Takashi Iwai <tiwai@suse.de> |
Merge tag 'asoc-fix-v4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v4.13
Quite a few fixes here that have been sent since the merge window,
Merge tag 'asoc-fix-v4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v4.13
Quite a few fixes here that have been sent since the merge window, the biggest one is the fix from Tony for some confusion with the device property API which was causing issues with the of-graph card. This is fixed with some changes in the graph API itself as it seemed very likely to be error prone.
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