#
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>
|
#
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>
|
#
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.
|
Revision tags: v4.14-rc2 |
|
#
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>
|
#
e9331ee9 |
| 19-Sep-2017 |
Mark Brown <broonie@kernel.org> |
Merge tag 'v4.14-rc1' into asoc-rockchip
Linux 4.14-rc1
|
Revision tags: v4.14-rc1 |
|
#
b0c79f49 |
| 04-Sep-2017 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar:
- Introduce the ORC unwinder, which can be enabled via CONFIG_OR
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar:
- Introduce the ORC unwinder, which can be enabled via CONFIG_ORC_UNWINDER=y.
The ORC unwinder is a lightweight, Linux kernel specific debuginfo implementation, which aims to be DWARF done right for unwinding. Objtool is used to generate the ORC unwinder tables during build, so the data format is flexible and kernel internal: there's no dependency on debuginfo created by an external toolchain.
The ORC unwinder is almost two orders of magnitude faster than the (out of tree) DWARF unwinder - which is important for perf call graph profiling. It is also significantly simpler and is coded defensively: there has not been a single ORC related kernel crash so far, even with early versions. (knock on wood!)
But the main advantage is that enabling the ORC unwinder allows CONFIG_FRAME_POINTERS to be turned off - which speeds up the kernel measurably:
With frame pointers disabled, GCC does not have to add frame pointer instrumentation code to every function in the kernel. The kernel's .text size decreases by about 3.2%, resulting in better cache utilization and fewer instructions executed, resulting in a broad kernel-wide speedup. Average speedup of system calls should be roughly in the 1-3% range - measurements by Mel Gorman [1] have shown a speedup of 5-10% for some function execution intense workloads.
The main cost of the unwinder is that the unwinder data has to be stored in RAM: the memory cost is 2-4MB of RAM, depending on kernel config - which is a modest cost on modern x86 systems.
Given how young the ORC unwinder code is it's not enabled by default - but given the performance advantages the plan is to eventually make it the default unwinder on x86.
See Documentation/x86/orc-unwinder.txt for more details.
- Remove lguest support: its intended role was that of a temporary proof of concept for virtualization, plus its removal will enable the reduction (removal) of the paravirt API as well, so Rusty agreed to its removal. (Juergen Gross)
- Clean up and fix FSGS related functionality (Andy Lutomirski)
- Clean up IO access APIs (Andy Shevchenko)
- Enhance the symbol namespace (Jiri Slaby)
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (47 commits) objtool: Handle GCC stack pointer adjustment bug x86/entry/64: Use ENTRY() instead of ALIGN+GLOBAL for stub32_clone() x86/fpu/math-emu: Add ENDPROC to functions x86/boot/64: Extract efi_pe_entry() from startup_64() x86/boot/32: Extract efi_pe_entry() from startup_32() x86/lguest: Remove lguest support x86/paravirt/xen: Remove xen_patch() objtool: Fix objtool fallthrough detection with function padding x86/xen/64: Fix the reported SS and CS in SYSCALL objtool: Track DRAP separately from callee-saved registers objtool: Fix validate_branch() return codes x86: Clarify/fix no-op barriers for text_poke_bp() x86/switch_to/64: Rewrite FS/GS switching yet again to fix AMD CPUs selftests/x86/fsgsbase: Test selectors 1, 2, and 3 x86/fsgsbase/64: Report FSBASE and GSBASE correctly in core dumps x86/fsgsbase/64: Fully initialize FS and GS state in start_thread_common x86/asm: Fix UNWIND_HINT_REGS macro for older binutils x86/asm/32: Fix regs_get_register() on segment registers x86/xen/64: Rearrange the SYSCALL entries x86/asm/32: Remove a bunch of '& 0xffff' from pt_regs segment reads ...
show more ...
|
#
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 ...
show more ...
|
Revision tags: v4.13, v4.13-rc7 |
|
#
c0bb80cf |
| 25-Aug-2017 |
Thomas Gleixner <tglx@linutronix.de> |
Merge branch 'x86/asm' into x86/apic
Pick up dependent changes to avoid merge conflicts
|
Revision tags: v4.13-rc6, v4.13-rc5 |
|
#
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
|
Revision tags: v4.13-rc4 |
|
#
229a7186 |
| 03-Aug-2017 |
Masami Hiramatsu <mhiramat@kernel.org> |
irq: Make the irqentry text section unconditional
Generate irqentry and softirqentry text sections without any Kconfig dependencies. This will add extra sections, but there should be no performace i
irq: Make the irqentry text section unconditional
Generate irqentry and softirqentry text sections without any Kconfig dependencies. This will add extra sections, but there should be no performace impact.
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: Chris Zankel <chris@zankel.net> Cc: David S . Miller <davem@davemloft.net> Cc: Francis Deslauriers <francis.deslauriers@efficios.com> 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/150172789110.27216.3955739126693102122.stgit@devbox Signed-off-by: Ingo Molnar <mingo@kernel.org>
show more ...
|
Revision tags: v4.13-rc3 |
|
#
ee9f8fce |
| 25-Jul-2017 |
Josh Poimboeuf <jpoimboe@redhat.com> |
x86/unwind: Add the ORC unwinder
Add the new ORC unwinder which is enabled by CONFIG_ORC_UNWINDER=y. It plugs into the existing x86 unwinder framework.
It relies on objtool to generate the needed .
x86/unwind: Add the ORC unwinder
Add the new ORC unwinder which is enabled by CONFIG_ORC_UNWINDER=y. It plugs into the existing x86 unwinder framework.
It relies on objtool to generate the needed .orc_unwind and .orc_unwind_ip sections.
For more details on why ORC is used instead of DWARF, see Documentation/x86/orc-unwinder.txt - but the short version is that it's a simplified, fundamentally more robust debugninfo data structure, which also allows up to two orders of magnitude faster lookups than the DWARF unwinder - which matters to profiling workloads like perf.
Thanks to Andy Lutomirski for the performance improvement ideas: splitting the ORC unwind table into two parallel arrays and creating a fast lookup table to search a subset of the unwind table.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: live-patching@vger.kernel.org Link: http://lkml.kernel.org/r/0a6cbfb40f8da99b7a45a1a8302dc6aef16ec812.1500938583.git.jpoimboe@redhat.com [ Extended the changelog. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
show more ...
|
#
53a2ebaa |
| 25-Jul-2017 |
James Morris <james.l.morris@oracle.com> |
sync to Linus v4.13-rc2 for subsystem developers to work against
|
Revision tags: v4.13-rc2, v4.13-rc1 |
|
#
818a23e3 |
| 03-Jul-2017 |
Takashi Iwai <tiwai@suse.de> |
Merge tag 'asoc-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v4.13
The big news with this release is the of-graph card, this provides a rep
Merge tag 'asoc-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v4.13
The big news with this release is the of-graph card, this provides a replacement for simple-card that is much more flexibile and scalable, allowing many more systems to use a generic sound card than was possible before:
- The of-graph card, finally merged after a long and dedicated effort by Morimoto-san. - New widget types intended mainly for use with DSPs. - New drivers for Allwinner V3s SoCs, Ensonic ES8316, several classes of x86 machine, Rockchip PDM controllers, STM32 I2S and S/PDIF controllers and ZTE AUD96P22 CODECs.
show more ...
|
Revision tags: v4.12 |
|
#
61830619 |
| 29-Jun-2017 |
Linus Walleij <linus.walleij@linaro.org> |
Merge tag 'v4.12-rc7' into devel
Linux 4.12-rc7
|
#
9a1d168e |
| 28-Jun-2017 |
J. Bruce Fields <bfields@redhat.com> |
Merge tag 'v4.12-rc5' into nfsd tree
Update to get f0c3192ceee3 "virtio_net: lower limit on buffer size". That bug was interfering with my nfsd testing.
|
#
a976c295 |
| 27-Jun-2017 |
Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
Merge back ACPICA material for v4.13.
|
#
b740e769 |
| 27-Jun-2017 |
Sean Paul <seanpaul@chromium.org> |
Merge remote-tracking branch 'airlied/drm-next' into drm-misc-next
Required for Daniel's drm_vblank_cleanup cleanup
|
Revision tags: v4.12-rc7 |
|
#
b50fb7c9 |
| 20-Jun-2017 |
Thomas Gleixner <tglx@linutronix.de> |
Merge branch 'linus' into irq/core
Get upstream changes so pending patches won't conflict.
|
#
902b3194 |
| 20-Jun-2017 |
Ingo Molnar <mingo@kernel.org> |
Merge branch 'WIP.sched/core' into sched/core
Conflicts: kernel/sched/Makefile
Pick up the waitqueue related renames - it didn't get much feedback, so it appears to be uncontroversial. Famous las
Merge branch 'WIP.sched/core' into sched/core
Conflicts: kernel/sched/Makefile
Pick up the waitqueue related renames - it didn't get much feedback, so it appears to be uncontroversial. Famous last words? ;-)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
show more ...
|
#
d4e0045c |
| 19-Jun-2017 |
Sean Paul <seanpaul@chromium.org> |
Merge remote-tracking branch 'origin/master' into drm-misc-next-fixes
Backmerge 4.12-rc6 into -next-fixes. -next-fixes will contain find patches for 4.13 merge window
|
Revision tags: v4.12-rc6 |
|
#
f63e4f7d |
| 15-Jun-2017 |
Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
Merge branches 'pm-cpufreq', 'pm-cpuidle' and 'pm-devfreq'
* pm-cpufreq: cpufreq: conservative: Allow down_threshold to take values from 1 to 10 Revert "cpufreq: schedutil: Reduce frequencies sl
Merge branches 'pm-cpufreq', 'pm-cpuidle' and 'pm-devfreq'
* pm-cpufreq: cpufreq: conservative: Allow down_threshold to take values from 1 to 10 Revert "cpufreq: schedutil: Reduce frequencies slower"
* pm-cpuidle: cpuidle: dt: Add missing 'of_node_put()'
* pm-devfreq: PM / devfreq: exynos-ppmu: Staticize event list PM / devfreq: exynos-ppmu: Handle return value of clk_prepare_enable PM / devfreq: exynos-nocp: Handle return value of clk_prepare_enable
show more ...
|
#
5b45fe6b |
| 14-Jun-2017 |
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> |
Merge tag 'v4.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into fbdev-for-next
Linux 4.12-rc5
|
#
10b90ee2 |
| 14-Jun-2017 |
Ingo Molnar <mingo@kernel.org> |
Merge tag 'v4.12-rc5' into ras/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
|
#
8f66439e |
| 12-Jun-2017 |
Jens Axboe <axboe@kernel.dk> |
Merge tag 'v4.12-rc5' into for-4.13/block
We've already got a few conflicts and upcoming work depends on some of the changes that have gone into mainline as regression fixes for this series.
Pull i
Merge tag 'v4.12-rc5' into for-4.13/block
We've already got a few conflicts and upcoming work depends on some of the changes that have gone into mainline as regression fixes for this series.
Pull in 4.12-rc5 to resolve these conflicts and make it easier on down stream trees to continue working on 4.13 changes.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
show more ...
|
#
81606aea |
| 12-Jun-2017 |
Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
Merge 4.12-rc5 into usb-next
We want the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|