15 Feb, 2017
2 commits
-
commit 8381cdd0e32dd748bd34ca3ace476949948bd793 upstream.
The -o/--order option is to select column number to sort a diff result.
It does the job by adding a hpp field at the beginning of the sort list.
But it should not be added to the output field list as it has no
callbacks required by a output field.During the setup_sorting(), the perf_hpp__setup_output_field() appends
the given sort keys to the output field if it's not there already.Originally it was checked by fmt->list being non-empty. But commit
3f931f2c4274 ("perf hists: Make hpp setup function generic") changed it
to check the ->equal callback.Anyways, we don't need to add the pseudo hpp field to the output field
list since it won't be used for output. So just skip fields if they
have no ->color or ->entry callbacks.Signed-off-by: Namhyung Kim
Acked-by: Jiri Olsa
Cc: Peter Zijlstra
Fixes: 3f931f2c4274 ("perf hists: Make hpp setup function generic")
Link: http://lkml.kernel.org/r/20170118051457.30946-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
Signed-off-by: Greg Kroah-Hartman -
commit a1c9f97f0b64e6337d9cfcc08c134450934fdd90 upstream.
Commit 21e6d8428664 ("perf diff: Use perf_hpp__register_sort_field
interface") changed list_add() to perf_hpp__register_sort_field().This resulted in a behavior change since the field was added to the tail
instead of the head. So the -o option is mostly ignored due to its
order in the list.This patch fixes it by adding perf_hpp__prepend_sort_field().
Signed-off-by: Namhyung Kim
Acked-by: Jiri Olsa
Cc: Peter Zijlstra
Fixes: 21e6d8428664 ("perf diff: Use perf_hpp__register_sort_field interface")
Link: http://lkml.kernel.org/r/20170118051457.30946-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
Signed-off-by: Greg Kroah-Hartman
26 Jan, 2017
9 commits
-
commit 21f5eda9b8671744539c8295b9df62991fffb2ce upstream.
Since ef1b144d ("tools/virtio/ringtest: fix run-on-all.sh to work
without /dev/cpu") run-on-all.sh uses seq 0 $HOST_AFFINITY as the list
of ids of the CPUs to run the command on (assuming ids of online CPUs
are consecutive and start from 0), where $HOST_AFFINITY is the highest
CPU id in the system previously determined using lscpu. This can fail
on systems with offline CPUs.Instead let's use lscpu to determine the list of online CPUs.
Signed-off-by: Halil Pasic
Fixes: ef1b144d ("tools/virtio/ringtest: fix run-on-all.sh to work without
/dev/cpu")
Reviewed-by: Sascha Silbe
Signed-off-by: Cornelia Huck
Signed-off-by: Greg Kroah-Hartman -
commit df21d2fa733035e4d414379960f94b2516b41296 upstream.
Test uses PMC2 to count the event. But PMC1 is being initialized.
Patch to fix it.Fixes: 3752e453f6ba ('selftests/powerpc: Add tests of PMU EBBs')
Signed-off-by: Madhavan Srinivasan
Signed-off-by: Michael Ellerman
Signed-off-by: Greg Kroah-Hartman -
commit 621cb4e7837e39d25a5af5a785ad282cdd2b4ce8 upstream.
This patch modifies the build dependencies on the jitdump support in
perf. As it stands jitdump was wrongfully made dependent 100% on using
DWARF. However, the dwarf dependency, only exist if generating the
source line table in genelf_debug.c. The rest of the support does not
need DWARF.This patch removes the dependency on DWARF for the entire jitdump
support. It keeps it only for the genelf_debug.c support.Signed-off-by: Maciej Debski
Reviewed-by: Stephane Eranian
Cc: Anton Blanchard
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1476356383-30100-3-git-send-email-eranian@google.com
Fixes: e12b202f8fb9 ("perf jitdump: Build only on supported archs")
[ Make it build only if NO_LIBELF isn't defined, as jitdump.o will only be built in that case ]
Signed-off-by: Arnaldo Carvalho de Melo
Signed-off-by: Greg Kroah-Hartman -
commit cf346d5bd4b9d61656df2f72565c9b354ef3ca0d upstream.
Both register_perl_scripting() and register_python_scripting() allocate
this variable, fix it by checking if it already was.Cc: Adrian Hunter
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Tom Zanussi
Cc: Wang Nan
Fixes: 7e4b21b84c43 ("perf/scripts: Add Python scripting engine")
Signed-off-by: Arnaldo Carvalho de Melo
Signed-off-by: Greg Kroah-Hartman -
commit c56cb33b56c13493eeb95612f80e4dd6e35cd109 upstream.
Since 841e3558b2d ("perf callchain: Recording 'dwarf' callchains do not
need DWARF unwinding support"), --call-graph dwarf is allowed in 'perf
record' even without unwind support. A couple of other places don't
reflect this yet though: the help text should list dwarf as a valid
record mode and the dump_size config should be respected too.Signed-off-by: Rabin Vincent
Cc: He Kuang
Fixes: 841e3558b2de ("perf callchain: Recording 'dwarf' callchains do not need DWARF unwinding support")
Link: http://lkml.kernel.org/r/1470837148-7642-1-git-send-email-rabin.vincent@axis.com
Signed-off-by: Arnaldo Carvalho de Melo
Signed-off-by: Greg Kroah-Hartman -
commit ed6c166cc7dc329736cace3affd2df984fb22ec8 upstream.
Fixes a perf diff regression issue which was introduced by commit
5baecbcd9c9a ("perf symbols: we can now read separate debug-info files
based on a build ID")The binary name could be same when perf diff different binaries. Build
id is used to distinguish between them.
However, the previous patch assumes the same binary name has same build
id. So it overwrites the build id according to the binary name,
regardless of whether the build id is set or not.Check the has_build_id in dso__load. If the build id is already set, use
it.Before the fix:
$ perf diff 1.perf.data 2.perf.data
# Event 'cycles'
#
# Baseline Delta Shared Object Symbol
# ........ ....... ................ .............................
#
99.83% -99.80% tchain_edit [.] f2
0.12% +99.81% tchain_edit [.] f3
0.02% -0.01% [ixgbe] [k] ixgbe_read_regAfter the fix:
$ perf diff 1.perf.data 2.perf.data
# Event 'cycles'
#
# Baseline Delta Shared Object Symbol
# ........ ....... ................ .............................
#
99.83% +0.10% tchain_edit [.] f3
0.12% -0.08% tchain_edit [.] f2Signed-off-by: Kan Liang
Cc: Andi Kleen
CC: Dima Kogan
Cc: Jiri Olsa
Cc: Namhyung Kim
Fixes: 5baecbcd9c9a ("perf symbols: we can now read separate debug-info files based on a build ID")
Link: http://lkml.kernel.org/r/1481642984-13593-1-git-send-email-kan.liang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo
Signed-off-by: Greg Kroah-Hartman -
commit 2bd42f3aaa53ebe78b9be6f898b7945dd61f9773 upstream.
There might be systems where MAP_32BIT is not defined, like some some
RHEL7 powerpc versions.Signed-off-by: Jiri Olsa
Cc: David Ahern
Cc: Kyle McMartin
Cc: Namhyung Kim
Cc: Peter Zijlstra
Fixes: 256763b01741 ("perf trace beauty mmap: Add more conditional defines")
Link: http://lkml.kernel.org/r/1481831814-23683-1-git-send-email-jolsa@kernel.org
[ Changed the Fixme cset to the one removing the conditional switch case for MAP_32BIT ]
Signed-off-by: Arnaldo Carvalho de Melo
Signed-off-by: Greg Kroah-Hartman -
commit 631ac41b46d293fb3ee43a809776c1663de8d9c6 upstream.
Removing extra '--' prefix.
Signed-off-by: Jiri Olsa
Cc: David Ahern
Cc: Namhyung Kim
Cc: Peter Zijlstra
Fixes: ad16511b0e40 ("perf mem: Add -U/-K (--all-user/--all-kernel) options")
Link: http://lkml.kernel.org/r/1481538943-21874-2-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
Signed-off-by: Greg Kroah-Hartman -
commit ecf1e2253ea79c6204f4d6a5e756e8fb4aed5a7e upstream.
Instead of the one when another syscall takes place while another is being
processed (in another CPU, but we show it serialized, so need to "interrupt"
the other), and also when finally showing the sys_enter + sys_exit + duration,
where we were showing the sample->time for the sys_exit, duh.Before:
# perf trace sleep 1
0.373 ( 0.001 ms): close(fd: 3 ) = 0
1000.626 (1000.211 ms): nanosleep(rqtp: 0x7ffd6ddddfb0) = 0
1000.653 ( 0.003 ms): close(fd: 1 ) = 0
1000.657 ( 0.002 ms): close(fd: 2 ) = 0
1000.667 ( 0.000 ms): exit_group( )
#After:
# perf trace sleep 1
0.336 ( 0.001 ms): close(fd: 3 ) = 0
0.373 (1000.086 ms): nanosleep(rqtp: 0x7ffe303e9550) = 0
1000.481 ( 0.002 ms): close(fd: 1 ) = 0
1000.485 ( 0.001 ms): close(fd: 2 ) = 0
1000.494 ( 0.000 ms): exit_group( )
[root@jouet linux]#Cc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-ecbzgmu2ni6glc6zkw8p1zmx@git.kernel.org
Fixes: 752fde44fd1c ("perf trace: Support interrupted syscalls")
Signed-off-by: Arnaldo Carvalho de Melo
Signed-off-by: Greg Kroah-Hartman
20 Jan, 2017
2 commits
-
commit a2b1e8a20c992b01eeb76de00d4f534cbe9f3822 upstream.
Nothing in this minimal script seems to require bash. We often run these
tests on embedded devices where the only shell available is the busybox
ash. Use sh instead.Signed-off-by: Rolf Eike Beer
Signed-off-by: Shuah Khan
Signed-off-by: Greg Kroah-Hartman -
commit 3659f98b5375d195f1870c3e508fe51e52206839 upstream.
Nothing in this minimal script seems to require bash. We often run these
tests on embedded devices where the only shell available is the busybox
ash. Use sh instead.Signed-off-by: Rolf Eike Beer
Signed-off-by: Shuah Khan
Signed-off-by: Greg Kroah-Hartman
15 Jan, 2017
1 commit
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commit 5da889c795b1fbefc9d8f058b54717ab8ab17891 upstream.
The virtio tools implementation of READ_ONCE() has a single parameter called
'var', but erroneously refers to 'val' for its cast, and thus won't work unless
there's a variable of the correct type that happens to be called 'var'.Fix this with s/var/val/, making READ_ONCE() work as expected regardless.
Fixes: a7c490333df3cff5 ("tools/virtio: use virt_xxx barriers")
Signed-off-by: Mark Rutland
Cc: Jason Wang
Cc: Michael S. Tsirkin
Cc: linux-kernel@vger.kernel.org
Cc: virtualization@lists.linux-foundation.org
Signed-off-by: Michael S. Tsirkin
Reviewed-by: Cornelia Huck
Reviewed-by: Jason Wang
Signed-off-by: Greg Kroah-Hartman
09 Jan, 2017
1 commit
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commit edee44be59190bf22d5c6e521f3852b7ff16862f upstream.
'perf report --tui' exits with error when it finds a sample of zero
length symbol (i.e. addr == sym->start == sym->end). Actually these are
valid samples. Don't exit TUI and show report with such symbols.Reported-and-Tested-by: Anton Blanchard
Link: https://lkml.org/lkml/2016/10/8/189
Signed-off-by: Ravi Bangoria
Cc: Alexander Shishkin
Cc: Benjamin Herrenschmidt
Cc: Chris Riyder
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Masami Hiramatsu
Cc: Michael Ellerman
Cc: Nicholas Piggin
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1479804050-5028-1-git-send-email-ravi.bangoria@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo
Signed-off-by: Greg Kroah-Hartman
10 Dec, 2016
2 commits
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Pull libnvdimm fixes from Dan Williams:
"Several fixes to the DSM (ACPI device specific method) marshaling
implementation.I consider these urgent enough to send for 4.9 consideration since
they fix the kernel's handling of ARS (Address Range Scrub) commands.
Especially for platforms without machine-check-recovery capabilities,
successful execution of ARS commands enables the platform to
potentially break out of an infinite reboot problem if a media error
is present in the boot path. There is also a one line fix for a
device-dax read-only mapping regression.Commits 9a901f5495e2 ("acpi, nfit: fix extended status translations
for ACPI DSMs") and 325896ffdf90 ("device-dax: fix private mapping
restriction, permit read-only") are true regression fixes for changes
introduced this cycle.Commit efda1b5d87cb ("acpi, nfit, libnvdimm: fix / harden ars_status
output length handling") fixes the kernel's handling of zero-length
results, this never would have worked in the past, but we only just
recently discovered a BIOS implementation that emits this arguably
spec non-compliant result.The remaining two commits are additional fall out from thinking
through the implications of a zero / truncated length result of the
ARS Status command.In order to mitigate the risk that these changes introduce yet more
regressions they are backstopped by a new unit test in commit
a7de92dac9f0 ("tools/testing/nvdimm: unit test acpi_nfit_ctl()") that
mocks up inputs to acpi_nfit_ctl()"* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
device-dax: fix private mapping restriction, permit read-only
tools/testing/nvdimm: unit test acpi_nfit_ctl()
acpi, nfit: fix bus vs dimm confusion in xlat_status
acpi, nfit: validate ars_status output buffer size
acpi, nfit, libnvdimm: fix / harden ars_status output length handling
acpi, nfit: fix extended status translations for ACPI DSMs -
This reverts commit 53855d10f4567a0577360b6448d52a863929775b.
It shouldn't have come in yet - it depends on the changes in linux-next
that will come in during the next merge window. As Matthew Wilcox says,
the test suite is broken with the current state without the revert.Requested-by: Matthew Wilcox
Cc: Andrew Morton
Signed-off-by: Linus Torvalds
08 Dec, 2016
1 commit
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Patch "lib/radix-tree: Convert to hotplug state machine" breaks the test
suite as it adds a call to cpuhp_setup_state_nocalls() which is not
currently emulated in the test suite. Add it, and delete the emulation
of the old CPU hotplug mechanism.Link: http://lkml.kernel.org/r/1480369871-5271-36-git-send-email-mawilcox@linuxonhyperv.com
Signed-off-by: Matthew Wilcox
Tested-by: Kirill A. Shutemov
Cc: Konstantin Khlebnikov
Cc: Ross Zwisler
Cc: Matthew Wilcox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Dec, 2016
1 commit
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A recent flurry of bug discoveries in the nfit driver's DSM marshalling
routine has highlighted the fact that we do not have unit test coverage
for this routine. Add a self-test of acpi_nfit_ctl() routine before
probing the "nfit_test.0" device. This mocks stimulus to acpi_nfit_ctl()
and if any of the tests fail "nfit_test.0" will be unavailable causing
the rest of the tests to not run / fail.This unit test will also be a place to land reproductions of quirky BIOS
behavior discovered in the field and ensure the kernel does not regress
against implementations it has seen in practice.Signed-off-by: Dan Williams
06 Dec, 2016
1 commit
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For the "lea %(rsp), %rbp" case, we check if there is a rex_prefix.
But we check 'bytes' which is insn_byte_t[4] in rex_prefix (insn_field
structure). Therefore, the check is always true.Instead, check 'nbytes' which is the right one.
Signed-off-by: Jiri Slaby
Acked-by: Josh Poimboeuf
Cc: Andy Lutomirski
Cc: Borislav Petkov
Cc: Brian Gerst
Cc: Denys Vlasenko
Cc: H. Peter Anvin
Cc: Linus Torvalds
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Link: http://lkml.kernel.org/r/20161205105551.25917-1-jslaby@suse.cz
Signed-off-by: Ingo Molnar
19 Nov, 2016
1 commit
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Pull ACPI fixes from Rafael Wysocki:
"They fix an ACPI thermal management regression introduced by a recent
FADT handling cleanup, an ACPI tools build issue introduced by a
recent ACPICA commit and a PCC mailbox initialization bug causing
lockdep to complain loudly.Specifics:
- Revert a recent ACPICA cleanup that attempted to get rid of all
FADT version 2 legacy, but broke ACPI thermal management on at
least one system (Rafael Wysocki).- Fix cross-compiled builds of ACPI tools that stopped working after
a recent cleanup related to the handling of header files in ACPICA
(Lv Zheng).- Fix a locking issue in the PCC channel initialization code that
invokes devm_request_irq() under a spinlock (among other things)
and causes lockdep to complain (Hoan Tran)"* tag 'acpi-4.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
tools/power/acpi: Remove direct kernel source include reference
mailbox: PCC: Fix lockdep warning when request PCC channel
Revert "ACPICA: FADT support cleanup"
17 Nov, 2016
1 commit
-
Avoid breaking cross-compiled ACPI tools builds by rearranging the
handling of kernel header files.This patch also contains OUTPUT/srctree cleanups in order to make above fix
working for various build environments.Fixes: e323c02dee59 (ACPICA: MSVC9: Fix inclusion order issue)
Reported-and-tested-by: Yisheng Xie
Reported-by: Andy Shevchenko
Signed-off-by: Lv Zheng
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki
15 Nov, 2016
1 commit
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Pull perf fixes from Ingo Molnar:
"An uncore PMU driver hardware enablement change for Intel SkyLake
uncore PMUs (Skylake Y, U, H and S platforms), plus a number of
tooling fixes for the histogram handling/displaying code"* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/uncore: Add more Intel uncore IMC PCI IDs for SkyLake
perf hists: Fix column length on --hierarchy
perf hists browser: Fix column indentation on --hierarchy
perf hists browser: Show folded sign properly on --hierarchy
perf hists browser: Fix indentation of folded sign on --hierarchy
perf hist browser: Fix hierarchy column counts
12 Nov, 2016
2 commits
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…g/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes for perf {top,report} --hierarchy, from Arnaldo Carvalho de Melo:
- These are fixes for the --hierarchy view of perf top and report, fixing
output oddities, mostly related to scrolling. (Namhyung Kim)Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org> -
* pm-tools-fixes:
cpupower: Correct return type of cpu_power_is_cpu_online() in cpufreq-set* pm-sleep-fixes:
PM / sleep: don't suspend parent when async child suspend_{noirq, late} fails
PM / sleep: fix device reference leak in test_suspend
09 Nov, 2016
5 commits
-
Markus reported that there's a weird behavior on perf top --hierarchy
regarding the column length.Looking at the code, I found a dubious code which affects the symptoms.
When --hierarchy option is used, the last column length might be
inaccurate since it skips to update the length on leaf entries.I cannot remember why it did and looks like a leftover from previous
version during the development.Anyway, updating the column length often is not harmful. So let's move
the code out.Reported-and-Tested-by: Markus Trippelsdorf
Signed-off-by: Namhyung Kim
Cc: Jiri Olsa
Cc: Peter Zijlstra
Fixes: 1a3906a7e6b9 ("perf hists: Resort hist entries with hierarchy")
Link: http://lkml.kernel.org/r/20161108130833.9263-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
When horizontall scrolling is used in hierarchy mode, the the right most
column has unnecessary indentation. Actually it's needed only if some
of left (overhead) columns were shown.Signed-off-by: Namhyung Kim
Tested-by: Arnaldo Carvalho de Melo
Tested-by: Markus Trippelsdorf
Cc: Jiri Olsa
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/20161108130833.9263-4-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
When horizontal scrolling is used in hierarchy mode, the folded signed
disappears at the right most column.Committer note:
To test it, run 'perf top --hierarchy, see the '+' symbol at the first
column, then press the right arrow key, the '+' symbol will disappear,
this patch fixes that.Signed-off-by: Namhyung Kim
Tested-by: Arnaldo Carvalho de Melo
Tested-by: Markus Trippelsdorf
Cc: Jiri Olsa
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/20161108130833.9263-3-namhyung@kernel.org
[ Move 'width -= 2' invariant to right after the if/else ]
Signed-off-by: Arnaldo Carvalho de Melo -
It should indent 2 spaces for folded sign and a whitespace.
Signed-off-by: Namhyung Kim
Tested-by: Markus Trippelsdorf
Cc: Jiri Olsa
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/20161108130833.9263-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
The perf report/top on TUI supports horizontal scrolling using LEFT and
RIGHT keys.But it calculate the number of columns incorrectly when hierarchy mode
is enabled so that keep pressing RIGHT key can make the output
disappeared.In the hierarchy mode, all sort keys are collapsed into a single column,
so it needs to be applied when calculating column numbers.Reported-and-Tested-by: Markus Trippelsdorf
Signed-off-by: Namhyung Kim
Tested-by: Arnaldo Carvalho de Melo
Cc: Jiri Olsa
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/20161024162110.17918-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
01 Nov, 2016
1 commit
-
When converting to a shared library in ac5a181d065d ("cpupower: Add
cpuidle parts into library"), cpu_freq_cpu_exists() was converted to
cpupower_is_cpu_online(). cpu_req_cpu_exists() returned 0 on success and
-ENOSYS on failure whereas cpupower_is_cpu_online returns 1 on success.
Check for the correct return value in cpufreq-set.Link: https://bugzilla.redhat.com/show_bug.cgi?id=1374212
Fixes: ac5a181d065d (cpupower: Add cpuidle parts into library)
Reported-by: Julian Seward
Signed-off-by: Laura Abbott
Acked-by: Thomas Renninger
Cc: 4.7+ # 4.7+
Signed-off-by: Rafael J. Wysocki
31 Oct, 2016
3 commits
-
Updating the event index has a memory barrier and causes more work
on the other side to actually signal the event. It is unnecessary
if a new buffer has already appeared on the ring, so poll once before
doing the update.The effect of this on the 0.9 ring implementation is pretty much
invisible, but on the new-style ring it provides a consistent 3%
performance improvement.Signed-off-by: Paolo Bonzini
Signed-off-by: Michael S. Tsirkin -
Provide new primitives used_empty/avail_empty and
build poll_avail/poll_used on top of it.Signed-off-by: Paolo Bonzini
Signed-off-by: Michael S. Tsirkin -
By using -flto and -fwhole-program, all functions from the ring implementation
can be treated as static and possibly inlined. Force this to happen through
the GCC flatten attribute.Signed-off-by: Paolo Bonzini
Signed-off-by: Michael S. Tsirkin
27 Oct, 2016
1 commit
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The following commit:
3732710ff6f2 ("objtool: Improve rare switch jump table pattern detection")
... improved objtool's ability to detect GCC switch statement jump
tables for GCC 6. However the check to allow short jumps with the
scanned range of instructions wasn't quite right. The pattern detection
should allow jumps to the indirect jump instruction itself.This fixes the following warning:
drivers/infiniband/sw/rxe/rxe_comp.o: warning: objtool: rxe_completer()+0x315: sibling call from callable instruction with changed frame pointer
Reported-by: Arnd Bergmann
Signed-off-by: Josh Poimboeuf
Cc: Linus Torvalds
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Fixes: 3732710ff6f2 ("objtool: Improve rare switch jump table pattern detection")
Link: http://lkml.kernel.org/r/20161026153408.2rifnw7bvoc5sex7@treble
Signed-off-by: Ingo Molnar
19 Oct, 2016
2 commits
-
AVX512_4VNNIW - Vector instructions for deep learning enhanced word
variable precision.
AVX512_4FMAPS - Vector instructions for deep learning floating-point
single precision.These new instructions are to be used in future Intel Xeon & Xeon Phi
processors. The bits 2&3 of CPUID[level:0x07, EDX] inform that new
instructions are supported by a processor.The spec can be found in the Intel Software Developer Manual (SDM) or in
the Instruction Set Extensions Programming Reference (ISE).Define new feature flags to enumerate the new instructions in /proc/cpuinfo
accordingly to CPUID bits and add the required xsave extensions which are
required for proper operation.Signed-off-by: Piotr Luc
Cc: Denys Vlasenko
Cc: Peter Zijlstra
Cc: Brian Gerst
Cc: Dave Hansen
Cc: Borislav Petkov
Cc: Andy Lutomirski
Cc: Josh Poimboeuf
Cc: Linus Torvalds
Link: http://lkml.kernel.org/r/20161018150111.29926-1-piotr.luc@intel.com
Signed-off-by: Thomas Gleixner -
Pull perf fixes from Ingo Molnar:
"Four tooling fixes, two kprobes KASAN related fixes and an x86 PMU
driver fix/cleanup"* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf jit: Fix build issue on Ubuntu
perf jevents: Handle events including .c and .o
perf/x86/intel: Remove an inconsistent NULL check
kprobes: Unpoison stack in jprobe_return() for KASAN
kprobes: Avoid false KASAN reports during stack copy
perf header: Set nr_numa_nodes only when we parsed all the data
perf top: Fix refreshing hierarchy entries on TUI
18 Oct, 2016
1 commit
-
Pull misc fixes from Ingo Molnar:
"A CPU hotplug debuggability fix and three objtool false positive
warnings fixes for new GCC6 code generation patterns"* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpu/hotplug: Use distinct name for cpu_hotplug.dep_map
objtool: Skip all "unreachable instruction" warnings for gcov kernels
objtool: Improve rare switch jump table pattern detection
objtool: Support '-mtune=atom' stack frame setup instruction
17 Oct, 2016
2 commits
-
…/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
- Fix handling of NUMA nodes in perf.data files (Jiri Olsa)
- Fix scrolling when refreshing 'perf top --tui --hierarchy' entries (Namhyung Kim)
- Fix building of JIT support on Ubuntu 16.04 (Anton Blanchard)
- Fix handling of events including .c and .o, that were being treated as
BPF scripts instead of vendor ones (Wang Nan)Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org> -
When building on Ubuntu 16.04, I get the following error:
Makefile:49: *** the openjdk development package appears to me missing, install and try again. Stop.
The problem is that update-java-alternatives has multiple spaces between
fields, and cut treats each space as a new delimiter:java-1.8.0-openjdk-ppc64el 1081 /usr/lib/jvm/java-1.8.0-openjdk-ppc64el
Fix this by using awk, which handles this fine.
Signed-off-by: Anton Blanchard
Reviewed-by: Stephane Eranian
Cc: Alexander Shishkin
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1476325243-15788-1-git-send-email-anton@ozlabs.org
Signed-off-by: Arnaldo Carvalho de Melo
