20 Jul, 2014
1 commit
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Pull locking fixes from Thomas Gleixner:
"The locking department delivers:- A rather large and intrusive bundle of fixes to address serious
performance regressions introduced by the new rwsem / mcs
technology. Simpler solutions have been discussed, but they would
have been ugly bandaids with more risk than doing the right thing.- Make the rwsem spin on owner technology opt-in for architectures
and enable it only on the known to work ones.- A few fixes to the lockdep userspace library"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/rwsem: Add CONFIG_RWSEM_SPIN_ON_OWNER
locking/mutex: Disable optimistic spinning on some architectures
locking/rwsem: Reduce the size of struct rw_semaphore
locking/rwsem: Rename 'activity' to 'count'
locking/spinlocks/mcs: Micro-optimize osq_unlock()
locking/spinlocks/mcs: Introduce and use init macro and function for osq locks
locking/spinlocks/mcs: Convert osq lock to atomic_t to reduce overhead
locking/spinlocks/mcs: Rename optimistic_spin_queue() to optimistic_spin_node()
locking/rwsem: Allow conservative optimistic spinning when readers have lock
tools/liblockdep: Account for bitfield changes in lockdeps lock_acquire
tools/liblockdep: Remove debug print left over from development
tools/liblockdep: Fix comparison of a boolean value with a value of 2
17 Jul, 2014
1 commit
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Pull perf fixes from Ingo Molnar:
"Tooling fixes and an Intel PMU driver fixlet"* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Do not allow optimized switch for non-cloned events
perf/x86/intel: ignore CondChgd bit to avoid false NMI handling
perf symbols: Get kernel start address by symbol name
perf tools: Fix segfault in cumulative.callchain report
16 Jul, 2014
1 commit
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…/sashal/linux into locking/urgent
Pull liblockdep fixes from Sasha Levin.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
08 Jul, 2014
4 commits
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Pull thermal fixes from Zhang Rui:
"Specifics:- update Email address of Thermal subsystem maintainer Eduardo
Valentin.- fix a problem that unloading thermal module results in kernel crash
because a non-exist device file is removed on thermal unload.- fix a problem that critical trip point is set wrongly on latest
i.MX6 SOC and results in system critical shutdown.- a couple of fixes to Tmon tool, of-thermal code and ti thermal
driver"* 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
tmon: set umask to a reasonable value
tmon: Check log file for common secuirty issues
tools/thermal: tmon: fix compilation errors when building statically
thermal: ti-soc-thermal: ti-bandgap.c: Cleaning up wrong address is checked
Thermal: imx: correct critical trip temperature setting
thermal: Bind cooling devices with the correct arguments
thermal: Add braces around suspect code
thermal: hwmon: Make the check for critical temp valid consistent
MAINTAINERS: Update Eduardo Valentin's email address -
Commit fb9edbe984 shortened held_lock->check from a 2-bit field
to a 1-bit field.Make liblockdep compatible with the new definition by passing check=1
to lock_acquire() calls, rather than the old value check=2 (which
inadvertently disabled checks by overflowing to 0).Without this fix, several of the test cases in liblockdep run_tests.sh
were failing.Signed-off-by: S. Lockwood-Childs
Signed-off-by: Sasha Levin -
Remove a debug print in init_preload() which was left over from
development and isn't usefull at all currently. It was also causing
false positive test results.Reported-by: S. Lockwood-Childs
Signed-off-by: Sasha Levin -
Comparison of a boolean value (!__init_state) with a value of 2 (done)
as currently happens in the code is unlikely to succeed and causes
repeated initialization of the pthread function pointers.Instead, remove boolean comparison so that we would initialize said
function pointers only once.Ref: https://bugzilla.kernel.org/show_bug.cgi?id=76741
Cc: Jean Delvare
Reported-by: David Binderman
Signed-off-by: Dianfang Zhang
Signed-off-by: Sasha Levin
04 Jul, 2014
4 commits
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Pull USB bugfixes from Greg KH:
"Here's a round of USB bugfixes, quirk additions, and new device ids
for 3.16-rc4. Nothing major in here at all, just a bunch of tiny
changes. All have been in linux-next with no reported issues"* tag 'usb-3.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (33 commits)
usb: chipidea: udc: delete td from req's td list at ep_dequeue
usb: Kconfig: make EHCI_MSM selectable for QCOM SOCs
usb-storage/SCSI: Add broken_fua blacklist flag
usb: musb: dsps: fix the base address for accessing the mode register
tools: ffs-test: fix header values endianess
usb: phy: msm: Do not do runtime pm if the phy is not idle
usb: musb: Ensure that cppi41 timer gets armed on premature DMA TX irq
usb: gadget: gr_udc: Fix check for invalid number of microframes
usb: musb: Fix panic upon musb_am335x module removal
usb: gadget: f_fs: resurect usb_functionfs_descs_head structure
Revert "tools: ffs-test: convert to new descriptor format fixing compilation error"
xhci: Fix runtime suspended xhci from blocking system suspend.
xhci: clear root port wake on bits if controller isn't wake-up capable
xhci: correct burst count field for isoc transfers on 1.0 xhci hosts
xhci: Use correct SLOT ID when handling a reset device command
MAINTAINERS: update e-mail address
usb: option: add/modify Olivetti Olicard modems
USB: ftdi_sio: fix null deref at port probe
MAINTAINERS: drop two usb-serial subdriver entries
USB: option: add device ID for SpeedUp SU9800 usb 3g modem
... -
The test fails in the middle when it is not run as root while accessing
/proc/sys/kernel/msg_next_id. Changed it to check for root at the
beginning of the test and exit if not root.Signed-off-by: Shuah Khan
Cc: Greg Kroah-Hartman
Cc: Davidlohr Bueso
Cc: Colin Ian King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
on-off-test uses "$UID != 0" to test for root, but $UID is a construct
specific to bash. Using /bin/sh that isn't bash results in the
following error (due to the "$UID" part expanding to nothing):./on-off-test.sh: 9: [: !=: unexpected operator
Change Makefile to use bash instead.
Signed-off-by: Shuah Khan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
on-off-test uses "$UID != 0" to test for root, but $UID is a construct
specific to bash. Using /bin/sh that isn't bash results in the
following error (due to the "$UID" part expanding to nothing):./on-off-test.sh: 9: [: !=: unexpected operator
Change Makefile to use bash instead.
Signed-off-by: Shuah Khan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Jul, 2014
5 commits
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Currently, the tmon umask value is set to 0, which means whatever the permission
mask in the shell are when starting tmon in daemon mode are what the permissions
of any created files will be. We should likely set something more explicit, so
lets go with the usual 022Signed-off-by: Neil Horman
Acked-by: Jacob Pan
Signed-off-by: Zhang Rui -
The tmon logging system blindly opens its log file on a static path, making it
very easy for someone to redirect that log information to inappropriate places
or overwrite other users data. Do some easy checking to make sure we're not
logging to a symlink or a file owned by another user.Signed-off-by: Neil Horman
Acked-by: Jacob Pan
Signed-off-by: Zhang Rui -
…/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v3.16-rc4
A few more fixes for this RC cycle. There's a revert of a previous patch
which ended up being the wrong version, so we reverted that commit and
applied a better fix.CPPI41 got a race condition fix which was found by Thomas Gleixner.
The MSM PHY driver got a runtime pm usage fix so that it wouldn't
kill the PHY while it was still being used.We also have a fix for a panic caused when removing musb_am335x driver.
Other than that, a few other minor fixes.
Signed-of-by: Felipe Balbi <balbi@ti.com>
-
tmon fails to build statically with the following error:
$ make LDFLAGS=-static
gcc -O1 -Wall -Wshadow -W -Wformat -Wimplicit-function-declaration -Wimplicit-int -fstack-protector -D VERSION=\"1.0\" -static tmon.o tui.o sysfs.o pid.o -o tmon -lm -lpanel -lncursesw -lpthread
tmon.o: In function `tmon_sig_handler':
tmon.c:(.text+0x21): undefined reference to `stdscr'
tmon.o: In function `tmon_cleanup':
tmon.c:(.text+0xb9): undefined reference to `stdscr'
tmon.c:(.text+0x11e): undefined reference to `stdscr'
tmon.c:(.text+0x123): undefined reference to `keypad'
tmon.c:(.text+0x12d): undefined reference to `nocbreak'
tmon.o: In function `main':
tmon.c:(.text+0x785): undefined reference to `stdscr'
tmon.c:(.text+0x78a): undefined reference to `nodelay'
tui.o: In function `setup_windows':
tui.c:(.text+0x131): undefined reference to `stdscr'
tui.c:(.text+0x176): undefined reference to `stdscr'
tui.c:(.text+0x19f): undefined reference to `stdscr'
tui.c:(.text+0x1cc): undefined reference to `stdscr'
tui.c:(.text+0x1ff): undefined reference to `stdscr'
tui.o:tui.c:(.text+0x229): more undefined references to `stdscr' follow
tui.o: In function `show_cooling_device':
[...]stdscr() and friends are in libtinfo (part of ncurses) so add it to
the libraries that are linked in when compiling tmon to fix it.Cc: Jacob Pan
Cc: Zhang Rui
Signed-off-by: Javi Merino
Acked-by: Jacob Pan -
It appears that no one ever run ffs-test on a big-endian machine,
since it used cpu-endianess for fs_count and hs_count fields which
should be in little-endian format. Fix by wrapping the numbers in
cpu_to_le32.Cc: stable@vger.kernel.org
Signed-off-by: Michal Nazarewicz
Signed-off-by: Felipe Balbi
27 Jun, 2014
1 commit
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This reverts commit f2af74123f8c5a735248547f4286a3adc28633c1.
There is a better fix for this build error coming in a following
patch.Signed-of-by: Felipe Balbi
25 Jun, 2014
1 commit
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Pull powerpc fixes and cleanups from Ben Herrenschmidt:
"Here are a handful or two of powerpc fixes and simple/trivial
cleanups. A bunch of them fix ftrace with the new ABI v2 in Little
Endian, the rest is a scattering of fairly simple things"* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc: Don't skip ePAPR spin-table CPUs
powerpc/module: Fix TOC symbol CRC
powerpc/powernv: Remove OPAL v1 takeover
powerpc/kmemleak: Do not scan the DART table
selftests/powerpc: Use the test harness for the TM DSCR test
powerpc/cell: cbe_thermal.c: Cleaning up a variable is of the wrong type
powerpc/kprobes: Fix jprobes on ABI v2 (LE)
powerpc/ftrace: Use pr_fmt() to namespace error messages
powerpc/ftrace: Fix nop of modules on 64bit LE (ABIv2)
powerpc/ftrace: Fix inverted check of create_branch()
powerpc/ftrace: Fix typo in mask of opcode
powerpc: Add ppc_global_function_entry()
powerpc/macintosh/smu.c: Fix closing brace followed by if
powerpc: Remove __arch_swab*
powerpc: Remove ancient DEBUG_SIG code
powerpc/kerenl: Enable EEH for IO accessors
24 Jun, 2014
2 commits
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…/balbi/usb into usb-linus
usb: fixes for v3.16-rc2
dwc3-omap won't crash anymore on module removal and suspend/resume won't kill
xHCI interrupts.MUSB got a fix to handle Babble condition only in host mode, how it should be.
The f_fs function driver got a fix for a NULL pointer dereference.
Renesas gadget got a fix for Status stage handling.
Signed-of-by: Felipe Balbi <balbi@ti.com>
-
This gives us standardised success/failure output and also handles
killing the test if it runs forever (2 minutes).Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt
20 Jun, 2014
2 commits
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The function machine__get_kernel_start_addr() was taking the first symbol
of kallsyms as the start address. This is incorrect in certain cases
where the first symbol is something at 0, while the actual kernel
functions begin at a later point (e.g. 0x80200000).This patch fixes machine__get_kernel_start_addr() to search for the
symbol "_text" or "_stext", which marks the beginning of kernel mapping.
This was already being done in machine__create_kernel_maps(). Thus, this
patch is just a refactor, to move that code into
machine__get_kernel_start_addr().Signed-off-by: Simon Que
Link: http://lkml.kernel.org/r/1402943529-13244-1-git-send-email-sque@chromium.org
Signed-off-by: Jiri Olsa -
When cumulative callchain mode is on, we could get samples with
with no actual hits. This breaks the assumption of the annotation
code, that each sample has annotation counts allocated and leads
to segfault.Fixing this by additional checks for annotation stats.
Acked-by: Namhyung Kim
Acked-by: Arnaldo Carvalho de Melo
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1402821332-12419-1-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa
19 Jun, 2014
1 commit
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Commit [ac8dde11: “usb: gadget: f_fs: Add flags to descriptors block”]
which introduced a new descriptor format for FunctionFS removed the
usb_functionfs_descs_head structure, which is still used by ffs-test.
tool.Convert ffs-test by converting it to use the new header format. For
testing kernels prior to 3.14 (when the new format was introduced) and
parsing of the legacy headers in the new kernels, provide a compilation
flag to make the tool use the old format.Finally, include information as to when the legacy FunctionFS headers
format has been deprecated (which is also when the new one has been
introduced).Reported-by: Lad, Prabhakar
Signed-off-by: Michal Nazarewicz
Signed-off-by: Felipe Balbi
14 Jun, 2014
1 commit
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Signed-off-by: Ingo Molnar
13 Jun, 2014
3 commits
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Pull more powerpc updates from Ben Herrenschmidt:
"Here are the remaining bits I was mentioning earlier. Mostly bug
fixes and new selftests from Michael (yay !). He also removed the WSP
platform and A2 core support which were dead before release, so less
clutter.One little "feature" I snuck in is the doorbell IPI support for
non-virtualized P8 which speeds up IPIs significantly between threads
of a core"* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (34 commits)
powerpc/book3s: Fix some ABIv2 issues in machine check code
powerpc/book3s: Fix guest MC delivery mechanism to avoid soft lockups in guest.
powerpc/book3s: Increment the mce counter during machine_check_early call.
powerpc/book3s: Add stack overflow check in machine check handler.
powerpc/book3s: Fix machine check handling for unhandled errors
powerpc/eeh: Dump PE location code
powerpc/powernv: Enable POWER8 doorbell IPIs
powerpc/cpuidle: Only clear LPCR decrementer wakeup bit on fast sleep entry
powerpc/powernv: Fix killed EEH event
powerpc: fix typo 'CONFIG_PMAC'
powerpc: fix typo 'CONFIG_PPC_CPU'
powerpc/powernv: Don't escalate non-existing frozen PE
powerpc/eeh: Report frozen parent PE prior to child PE
powerpc/eeh: Clear frozen state for child PE
powerpc/powernv: Reduce panic timeout from 180s to 10s
powerpc/xmon: avoid format string leaking to printk
selftests/powerpc: Add tests of PMU EBBs
selftests/powerpc: Add support for skipping tests
selftests/powerpc: Put the test in a separate process group
selftests/powerpc: Fix instruction loop for ABIv2 (LE)
... -
Pull more perf updates from Ingo Molnar:
"A second round of perf updates:- wide reaching kprobes sanitization and robustization, with the hope
of fixing all 'probe this function crashes the kernel' bugs, by
Masami Hiramatsu.- uprobes updates from Oleg Nesterov: tmpfs support, corner case
fixes and robustization work.- perf tooling updates and fixes from Jiri Olsa, Namhyung Ki, Arnaldo
et al:
* Add support to accumulate hist periods (Namhyung Kim)
* various fixes, refactorings and enhancements"* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (101 commits)
perf: Differentiate exec() and non-exec() comm events
perf: Fix perf_event_comm() vs. exec() assumption
uprobes/x86: Rename arch_uprobe->def to ->defparam, minor comment updates
perf/documentation: Add description for conditional branch filter
perf/x86: Add conditional branch filtering support
perf/tool: Add conditional branch filter 'cond' to perf record
perf: Add new conditional branch filter 'PERF_SAMPLE_BRANCH_COND'
uprobes: Teach copy_insn() to support tmpfs
uprobes: Shift ->readpage check from __copy_insn() to uprobe_register()
perf/x86: Use common PMU interrupt disabled code
perf/ARM: Use common PMU interrupt disabled code
perf: Disable sampled events if no PMU interrupt
perf: Fix use after free in perf_remove_from_context()
perf tools: Fix 'make help' message error
perf record: Fix poll return value propagation
perf tools: Move elide bool into perf_hpp_fmt struct
perf tools: Remove elide setup for SORT_MODE__MEMORY mode
perf tools: Fix "==" into "=" in ui_browser__warning assignment
perf tools: Allow overriding sysfs and proc finding with env var
perf tools: Consider header files outside perf directory in tags target
... -
Pull networking updates from David Miller:
1) Seccomp BPF filters can now be JIT'd, from Alexei Starovoitov.
2) Multiqueue support in xen-netback and xen-netfront, from Andrew J
Benniston.3) Allow tweaking of aggregation settings in cdc_ncm driver, from Bjørn
Mork.4) BPF now has a "random" opcode, from Chema Gonzalez.
5) Add more BPF documentation and improve test framework, from Daniel
Borkmann.6) Support TCP fastopen over ipv6, from Daniel Lee.
7) Add software TSO helper functions and use them to support software
TSO in mvneta and mv643xx_eth drivers. From Ezequiel Garcia.8) Support software TSO in fec driver too, from Nimrod Andy.
9) Add Broadcom SYSTEMPORT driver, from Florian Fainelli.
10) Handle broadcasts more gracefully over macvlan when there are large
numbers of interfaces configured, from Herbert Xu.11) Allow more control over fwmark used for non-socket based responses,
from Lorenzo Colitti.12) Do TCP congestion window limiting based upon measurements, from Neal
Cardwell.13) Support busy polling in SCTP, from Neal Horman.
14) Allow RSS key to be configured via ethtool, from Venkata Duvvuru.
15) Bridge promisc mode handling improvements from Vlad Yasevich.
16) Don't use inetpeer entries to implement ID generation any more, it
performs poorly, from Eric Dumazet.* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1522 commits)
rtnetlink: fix userspace API breakage for iproute2 < v3.9.0
tcp: fixing TLP's FIN recovery
net: fec: Add software TSO support
net: fec: Add Scatter/gather support
net: fec: Increase buffer descriptor entry number
net: fec: Factorize feature setting
net: fec: Enable IP header hardware checksum
net: fec: Factorize the .xmit transmit function
bridge: fix compile error when compiling without IPv6 support
bridge: fix smatch warning / potential null pointer dereference
via-rhine: fix full-duplex with autoneg disable
bnx2x: Enlarge the dorq threshold for VFs
bnx2x: Check for UNDI in uncommon branch
bnx2x: Fix 1G-baseT link
bnx2x: Fix link for KR with swapped polarity lane
sctp: Fix sk_ack_backlog wrap-around problem
net/core: Add VF link state control policy
net/fsl: xgmac_mdio is dependent on OF_MDIO
net/fsl: Make xgmac_mdio read error message useful
net_sched: drr: warn when qdisc is not work conserving
...
12 Jun, 2014
13 commits
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Testing that perf properly closes opened dso objects
and tries to reopen in case we run out of allowed file
descriptors for dso data.Acked-by: Namhyung Kim
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jean Pihet
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Reviewed by: David Ahern
Link: http://lkml.kernel.org/r/1401892622-30848-14-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa -
Adding test that setup test_dso_data__fd_limit and test
dso data file descriptors are cached appropriately.Acked-by: Namhyung Kim
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jean Pihet
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1401892622-30848-13-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa -
Making the test_file function to be reusable for
new tests coming in following patches.Also changing the template name of temp files to
"/tmp/perf-test-XXXXXX" to easily identify & blame.Acked-by: Namhyung Kim
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jean Pihet
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1401892622-30848-12-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa -
In upcoming tests we will setup process limits, which
might affect other tests. Spawning child for each test
to prevent this.Acked-by: Namhyung Kim
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jean Pihet
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Reviewed-by: David Ahern
Link: http://lkml.kernel.org/r/1401892622-30848-11-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa -
Adding descriptions/explanations for dso__data_* interface
functions.Acked-by: Namhyung Kim
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jean Pihet
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1401892622-30848-10-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa -
Adding do_open function that tries to close opened
dso objects in case we fail to open the dso due to
to crossing the allowed RLIMIT_NOFILE limit.Acked-by: Namhyung Kim
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jean Pihet
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1401892622-30848-9-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa -
Adding file size check, because the lseek will succeed for
any offset behind file size and thus succeed when it was
expected to fail.Factoring the code to check the offset against file size
earlier in the flow.Acked-by: Namhyung Kim
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jean Pihet
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1401892622-30848-8-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa -
Caching dso data file descriptors to avoid expensive re-opens
especially during DWARF unwind.We keep dsos data file descriptors open until their count reaches
the half of the current fd open limit (RLIMIT_NOFILE). In this case
we close file descriptor of the first opened dso object.We've got overall speedup (~27% for my workload) of report:
'perf report --stdio -i perf-test.data' (3 runs)
(perf-test.data size was around 12GB)current code:
545,640,944,228 cycles ( +- 0.53% )
785,255,798,320 instructions ( +- 0.03% )366.340910010 seconds time elapsed ( +- 3.65% )
after change:
435,895,036,114 cycles ( +- 0.26% )
636,790,271,176 instructions ( +- 0.04% )266.481463387 seconds time elapsed ( +- 0.13% )
Acked-by: Namhyung Kim
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jean Pihet
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1401892622-30848-7-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa -
Adding global count of opened dso objects so we could
properly limit the number of opened dso data file
descriptors.Acked-by: Namhyung Kim
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jean Pihet
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1401892622-30848-6-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa -
Adding global list of opened dso objects, so we can
track them and use the list for caching dso data file
descriptors.Acked-by: Namhyung Kim
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jean Pihet
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1401892622-30848-5-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa -
Adding data_fd into dso object so we could handle caching
of opened dso file data descriptors coming int next patches.Adding dso__data_close interface to keep the data_fd updated
when the descriptor is closed.Acked-by: Namhyung Kim
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jean Pihet
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1401892622-30848-4-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa -
Add separated structure/namespace for data related
variables. We are going to add mode of them, so this
way they will be clearly separated.Acked-by: Namhyung Kim
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jean Pihet
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1401892622-30848-3-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa -
Caching registers value into an array. Got about 4% speed up
of perf_reg_value function for report command processing
dwarf unwind stacks.Output from report over 1.5 GB data with DWARF unwind stacks:
(TODO fix perf diff)current code:
5.84% perf perf [.] perf_reg_value
change:
1.94% perf perf [.] perf_reg_valueAnd little bit of overall speed up:
(perf stat -r 5 -e '{cycles,instructions}:u' ...)current code:
310,298,611,754 cycles ( +- 0.33% )
439,669,689,341 instructions ( +- 0.03% )188.656753166 seconds time elapsed ( +- 0.82% )
change:
291,315,329,878 cycles ( +- 0.22% )
391,763,485,304 instructions ( +- 0.03% )180.742249687 seconds time elapsed ( +- 0.64% )
Acked-by: Namhyung Kim
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jean Pihet
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1401892622-30848-2-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa