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Adds callchain support for MIPS Perf-events. For more info on this feature,
please refer to tools/perf/Documentation/perf-report.txt and
tools/perf/design.txt.
Currently userspace callchain data is not recorded, because we do not have
a safe way to do this.
Signed-off-by: Deng-Cheng Zhu <[email protected]>
Acked-by: David Daney <[email protected]>
To: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/1690/
Signed-off-by: Ralf Baechle <[email protected]>
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This patch provides the skeleton of the HW perf event support. To enable
this feature, we can not choose the SMTC kernel; Oprofile should be
disabled; kernel performance events be selected. Then we can enable it in
Kernel type menu.
Oprofile for MIPS platforms initializes irq at arch init time. Currently
we do not change this logic to allow PMU reservation.
If a platform has EIC, we can use the irq base and perf counter irq offset
defines for the interrupt controller in specific init_hw_perf_events().
Based on this skeleton patch, the 3 different kinds of MIPS PMU, namely,
mipsxx/loongson2/rm9000, can be supported by adding corresponding lower
level C files at the bottom. The suggested names of these files are
perf_event_mipsxx.c/perf_event_loongson2.c/perf_event_rm9000.c. So, for
example, we can do this by adding "#include perf_event_mipsxx.c" at the
bottom of perf_event.c.
In addition, PMUs with 64bit counters are also considered in this patch.
Signed-off-by: Deng-Cheng Zhu <[email protected]>
To: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/1688/
Signed-off-by: Ralf Baechle <[email protected]>
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Software events are required as part of the measurable stuff by the
Linux performance counter subsystem. Here is the list of events added by
this patch:
PERF_COUNT_SW_PAGE_FAULTS
PERF_COUNT_SW_PAGE_FAULTS_MIN
PERF_COUNT_SW_PAGE_FAULTS_MAJ
PERF_COUNT_SW_ALIGNMENT_FAULTS
PERF_COUNT_SW_EMULATION_FAULTS
Signed-off-by: Deng-Cheng Zhu <[email protected]>
To: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Acked-by: David Daney <[email protected]>
Reviewed-by: Matt Fleming <[email protected]>
Patchwork: https://patchwork.linux-mips.org/patch/1686/
Signed-off-by: Ralf Baechle <[email protected]>
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Perf-events is now using local_t helper functions internally. There is a
use of local_xchg(). On MIPS, this is defined to xchg_local() which is
missing in asm/system.h. This patch re-defines local_xchg() in asm/local.h
to atomic_long_xchg(). Then Perf-events can pass the build.
Signed-off-by: Deng-Cheng Zhu <[email protected]>
To: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/1687/
Signed-off-by: Ralf Baechle <[email protected]>
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Add support for Titan TNETV1050,1055,1056,1060 variants. This SoC is almost
completely identical to AR7 except on a few points:
- a second bank of gpios is available
- vlynq0 on titan is vlynq1 on ar7
- different PHY addresses for cpmac0
This SoC can be found on commercial products like the Linksys WRTP54G
Original patch by Xin with improvments by Florian.
Signed-off-by: Xin Zhen <[email protected]>
Signed-off-by: Florian Fainelli <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1563/
Signed-off-by: Ralf Baechle <[email protected]>
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In order to detect the Titan variant, we must initialize GPIOs earlier since
detection relies on some GPIO values to be set.
Signed-off-by: Florian Fainelli <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1562/
Signed-off-by: Ralf Baechle <[email protected]>
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Declare that OCTEON reference boards have both OHCI and EHCI.
Add platform devices for the corresponding hardware.
Signed-off-by: David Daney <[email protected]>
To: [email protected]
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1676/
Acked-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Ralf Baechle <[email protected]>
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The OCTEON II SOC has USB EHCI and OHCI controllers connected directly
to the internal I/O bus. This patch adds the necessary 'glue' logic
to allow ehci-hcd and ohci-hcd drivers to work on OCTEON II.
The OCTEON normally runs big-endian, and the ehci/ohci internal
registers have host endianness, so we need to select
USB_EHCI_BIG_ENDIAN_MMIO.
The ehci and ohci blocks share a common clocking and PHY
infrastructure. Initialization of the host controller and PHY clocks
is common between the two and is factored out into the
octeon2-common.c file.
Setting of USB_ARCH_HAS_OHCI and USB_ARCH_HAS_EHCI is done in
arch/mips/Kconfig in a following patch.
Signed-off-by: David Daney <[email protected]>
To: [email protected]
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1675/
Acked-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Ralf Baechle <[email protected]>
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The EHCI and OHCI blocks connection to the I/O bus is controlled by
these registers.
Signed-off-by: David Daney <[email protected]>
To: [email protected]
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1674/
Acked-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Ralf Baechle <[email protected]>
create mode 100644 arch/mips/include/asm/octeon/cvmx-uctlx-defs.h
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The CN63XXP1 needs a couple of workarounds to ensure memory is not written
in unexpected ways.
All PREF with hints in the range 0-4,6-24 are replaced with PREF 28. We
pass a flag to the assembler to cover compiler generated code, and patch
uasm for the dynamically generated code.
The write buffer threshold is reduced to 4.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1672/
Signed-off-by: Ralf Baechle <[email protected]>
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The creation of the I/O clock domain requires some adjustments. Since
the watchdog counters are clocked by the I/O clock, use its rate for
timing calculations.
Signed-off-by: David Daney <[email protected]>
Cc: Wim Van Sebroeck <[email protected]>
Cc: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1659/
Acked-by: Wim Van Sebroeck <[email protected]>
Signed-off-by: Ralf Baechle <[email protected]>
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The creation of the I/O clock domain requires some adjustments. Since the
CF bus timing logic is clocked by the I/O clock, use its rate for delay
calculations.
Signed-off-by: David Daney <[email protected]>
Cc: Jeff Garzik <[email protected]>
Cc: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1660/
Acked-by: Jeff Garzik <[email protected]>
Signed-off-by: Ralf Baechle <[email protected]>
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The I2C and UARTS are clocked by the I/O clock, use its rate for these
devices.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1670/
Signed-off-by: Ralf Baechle <[email protected]>
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Starting with cn63xx Octeon I/O blocks are clocked at a different rate
than the CPU. Add a new function octeon_get_io_clock_rate() that
yields the I/O clock rate.
Also rearrange octeon_get_clock_rate() to get the value from the saved
sysinfo structure.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1671/
Signed-off-by: Ralf Baechle <[email protected]>
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We can run with any simulator clock rate. Get rid of the code
overriding it to 6MHz.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1669/
Signed-off-by: Ralf Baechle <[email protected]>
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The per-CPU clocks are synchronized from IPD_CLK_COUNT, on cn63XX it must
be scaled by the clock frequency ratio.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1667/
Signed-off-by: Ralf Baechle <[email protected]>
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Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1666/
Signed-off-by: Ralf Baechle <[email protected]>
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The OCTEON II ISA extends the original OCTEON ISA, so give it its own
__elf_platform string so optimized libraries can be selected in
userspace.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1665/
Signed-off-by: Ralf Baechle <[email protected]>
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Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1664/
Signed-off-by: Ralf Baechle <[email protected]>
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Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1662/
Signed-off-by: Ralf Baechle <[email protected]>
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The CN63XX has a different L2 cache architecture. Update the helper
functions to reflect this.
Some joining of split lines was also done to improve readability, as
well as reformatting of comments.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1663/
Signed-off-by: Ralf Baechle <[email protected]>
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Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1661/
Signed-off-by: Ralf Baechle <[email protected]>
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The CN63XX is a new 6-CPU SOC based on the new OCTEON II CPU cores.
Join some lines back together. This makes some of them exceed 80
columns, but they are uninteresting and this unclutters things.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1668/
Signed-off-by: Ralf Baechle <[email protected]>
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All Octeon chips can support more than 4GB of RAM. Also due to how Octeon
PCI is setup, even some configurations with less than 4GB of RAM will have
portions that are not accessible from 32-bit devices.
Enable the swiotlb code to handle the cases where a device cannot directly
do DMA. This is a complete rewrite of the Octeon DMA mapping code.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1639/
Signed-off-by: Ralf Baechle <[email protected]>
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This allows platforms that are using the swiotlb to initialize it.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1638/
Signed-off-by: Ralf Baechle <[email protected]>
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Use asm-generic/dma-mapping-common.h to handle all DMA mapping operations
and establish a default get_dma_ops() that forwards all operations to the
existing code.
Augment dev_archdata to carry a pointer to the struct dma_map_ops, allowing
DMA operations to be overridden on a per device basis. Currently this is
never filled in, so the default dma_map_ops are used. A follow-on patch
sets this for Octeon PCI devices.
Also initialize the dma_debug system as it is now used if it is configured.
Includes fixes by Kevin Cernekee <[email protected]>.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1637/
Patchwork: http://patchwork.linux-mips.org/patch/1678/
Signed-off-by: Ralf Baechle <[email protected]>
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Any function defined in a header file should be inline. This helps us
avoid 'unused' compiler warnings when we include the files in more
places in subsequent patches.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1636/
Signed-off-by: Ralf Baechle <[email protected]>
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Give us a nice place to allocate coherent DMA memory for 32-bit devices.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1635/
Signed-off-by: Ralf Baechle <[email protected]>
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On OCTEON, we reserve the last 256MB of 32-bit PCI address space, mapping
the RAM in this region at a high DMA address. This makes memory in this
region unavailable for 32-bit DMA.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1634/
Signed-off-by: Ralf Baechle <[email protected]>
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DMA mapping may reduce the usable physical address range usable for
32-bit DMA.
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1633/
Signed-off-by: Ralf Baechle <[email protected]>
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This allows follow-on patches to dma mapping functions to work with
the octeon mgmt device..
Signed-off-by: David Daney <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1632/
Signed-off-by: Ralf Baechle <[email protected]>
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Add stackoverflow detection to mips arch
Signed-off-by: Adam Jiang <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/1559/
Patchwork: https://patchwork.linux-mips.org/patch/1651/
Signed-off-by: Ralf Baechle <[email protected]>
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arch/mips/Kconfig already sets GENERIC_HARDIRQS_NO__DO_IRQ unconditionally.
Remove the redundant select from the Loongson Kconfig.
Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Ralf Baechle <[email protected]>
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All callers were passing in 1 anyway.
Signed-off-by: Ralf Baechle <[email protected]>
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Signed-off-by: Ralf Baechle <[email protected]>
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It was a nice optimization - on paper at least. In practice it results in
branches that may exceed the maximum legal range for a branch. We can
fight that problem with -ffunction-sections but -ffunction-sections again
is incompatible with -pg used by the function tracer.
By rewriting the loop around all simple LL/SC blocks to C we reduce the
amount of inline assembler and at the same time allow GCC to often fill
the branch delay slots with something sensible or whatever else clever
optimization it may have up in its sleeve.
With this optimization gone we also no longer need -ffunction-sections,
so drop it.
This optimization was originally introduced in 2.6.21, commit
5999eca25c1fd4b9b9aca7833b04d10fe4bc877d (linux-mips.org) rsp.
f65e4fa8e0c6022ad58dc88d1b11b12589ed7f9f (kernel.org).
Original fix for the issues which caused me to pull this optimization by
Paul Gortmaker <[email protected]>.
Signed-off-by: Ralf Baechle <[email protected]>
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* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
cifs: Cleanup and thus reduce smb session structure and fields used during authentication
NTLM auth and sign - Use appropriate server challenge
cifs: add kfree() on error path
NTLM auth and sign - minor error corrections and cleanup
NTLM auth and sign - Use kernel crypto apis to calculate hashes and smb signatures
NTLM auth and sign - Define crypto hash functions and create and send keys needed for key exchange
cifs: cifs_convert_address() returns zero on error
NTLM auth and sign - Allocate session key/client response dynamically
cifs: update comments - [s/GlobalSMBSesLock/cifs_file_list_lock/g]
cifs: eliminate cifsInodeInfo->write_behind_rc (try #6)
[CIFS] Fix checkpatch warnings and bump cifs version number
cifs: wait for writeback to complete in cifs_flush
cifs: convert cifsFileInfo->count to non-atomic counter
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We used to protect against overflow, but rather than return an error, do
what read/write does, namely to limit the total size to MAX_RW_COUNT.
This is not only more consistent, but it also means that any broken
low-level read/write routine that still keeps counts in 'int' can't
break.
Signed-off-by: Linus Torvalds <[email protected]>
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Commit 338e4fab added a missing kfree if the alloc_pci_dev failed
but forgot to include <linux/slab.h> for the definition of
kfree.
Signed-off-by: Kyle McMartin <[email protected]>
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Always use a safe 5-byte noop sequence. Drop the trap test, since it
is known to return false negatives on some virtualization platforms on
32 bits. The resulting code is both simpler and safer.
Cc: Daniel Drake <[email protected]>
Cc: Jason Baron <[email protected]>
Cc: Mathieu Desnoyers <[email protected]>
Signed-off-by: H. Peter Anvin <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
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The following are the fixes in this patch:
1. Added support of set timestamp command in the driver
2. Pass all status code to mgmt application. Earlier we were passing
only failed ones.
3. Call class_destroy after unregister_chrdev and pci_unregister_driver
Signed-off-by: Anil Ravindranath <[email protected]>
Signed-off-by: James Bottomley <[email protected]>
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The vmlinux.lds.h knobs to emit the __jump_table section in the main
kernel image takes care to align the section, but this doesn't help
for the __jump_table section that gets emitted into modules.
Fix the resulting lack of section alignment by explicitly specifying
it in the assembler.
Signed-off-by: David S. Miller <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
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Some archs do not need to do anything special for jump labels on
startup (like MIPS). This patch adds a weak function stub for
arch_jump_label_text_poke_early();
Cc: Jason Baron <[email protected]>
Cc: David Miller <[email protected]>
Cc: David Daney <[email protected]>
Suggested-by: Thomas Gleixner <[email protected]>
LKML-Reference: <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
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Kprobes and jump label were having a race between mutexes that
was fixed by reordering the jump label. But this reordering
moved the jump label mutex into a preempt disable location.
This patch does a little fiddling to move the grabbing of
the jump label mutex from inside the preempt disable section
and still keep the order correct between the mutex and the
kprobes lock.
Reported-by: Ingo Molnar <[email protected]>
Acked-by: Masami Hiramatsu <[email protected]>
Cc: Jason Baron <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
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* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] fix kprobes single stepping
[S390] tape: fix dbf usage
[S390] dasd: provide a Sense Path Group ID ioctl
[S390] ftrace: select HAVE_C_RECORDMCOUNT
[S390] vdso: get rid of redefinition warnings
[S390] facility detection: remove unused variable
[S390] hypfs: Fix error handling in hypfs_diag initialization
[S390] topology: fix cpu masks for topology=off case
[S390] topology: add SCHED_MC config option
[S390] Kconfig: add machine type number to code generation options
[S390] Add z196 machine type to setup_hwcaps
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* git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus:
Squashfs: fix function prototype
Squashfs: fix use of __le64 annotated variable
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* 'for-linus' of git://neil.brown.name/md:
md: tidy up device searches in read_balance.
md/raid1: fix some typos in comments.
md/raid1: discard unused variable.
md: unplug writes to external bitmaps.
md: use separate bio pool for each md device.
md: change type of first arg to sync_page_io.
md/raid1: perform mem allocation before disabling writes during resync.
md: use bio_kmalloc rather than bio_alloc when failure is acceptable.
md: Fix possible deadlock with multiple mempool allocations.
md: fix and update workqueue usage
md: use sector_t in bitmap_get_counter
md: remove md_mutex locking.
md: Fix regression with raid1 arrays without persistent metadata.
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When printing mount options, print the new ecryptfs_mount_auth_tok_only
mount option.
Signed-off-by: Tyler Hicks <[email protected]>
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This patch adds a new mount parameter 'ecryptfs_mount_auth_tok_only' to
force ecryptfs to use only authentication tokens which signature has
been specified at mount time with parameters 'ecryptfs_sig' and
'ecryptfs_fnek_sig'. In this way, after disabling the passthrough and
the encrypted view modes, it's possible to make available to users only
files encrypted with the specified authentication token.
Signed-off-by: Roberto Sassu <[email protected]>
Cc: Dustin Kirkland <[email protected]>
Cc: James Morris <[email protected]>
[Tyler: Clean up coding style errors found by checkpatch]
Signed-off-by: Tyler Hicks <[email protected]>
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This patch replaces the check of the 'matching_auth_tok' pointer with
the exit status of ecryptfs_find_auth_tok_for_sig().
This avoids to use authentication tokens obtained through the function
ecryptfs_keyring_auth_tok_for_sig which are not valid.
Signed-off-by: Roberto Sassu <[email protected]>
Cc: Dustin Kirkland <[email protected]>
Cc: James Morris <[email protected]>
Signed-off-by: Tyler Hicks <[email protected]>
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