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  1. 22 11月, 2018 3 次提交
  3. 06 11月, 2018 9 次提交
    • Y
      nds32: Remove duplicated include from pm.c · 4f014a41
      由 YueHaibing 提交于 
      Remove duplicated include.
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Acked-by: NPavel Machek <pavel@ucw.cz>
Acked-by: NGreentime Hu <greentime@andestech.com>
Signed-off-by: NGreentime Hu <greentime@andestech.com>
      4f014a41
    • N
      nds32: Power management for nds32 · 7938e631
      由 Nick Hu 提交于 
      There are three sleep states in nds32:
	suspend to idle,
	suspend to standby,
	suspend to ram

In suspend to ram, we use the 'standby' instruction to emulate
power management device to hang the system util wakeup source
send wakeup events to break the loop.

First, we push the general purpose registers and system registers
to stack. Second, we translate stack pointer to physical address
and store to memory to save the stack pointer. Third, after write
back and invalid the cache we hang in 'standby' intruction.
When wakeup source trigger wake up events, the loop will be break
and resume the system.
Signed-off-by: NNick Hu <nickhu@andestech.com>
Acked-by: NPavel Machek <pavel@ucw.cz>
Acked-by: NGreentime Hu <greentime@andestech.com>
Signed-off-by: NGreentime Hu <greentime@andestech.com>
      7938e631
    • N
      nds32: Add document for NDS32 PMU. · cf26edd8
      由 Nickhu 提交于 
      The document for how to add NDS32 PMU
in devicetree.
Signed-off-by: NNickhu <nickhu@andestech.com>
Reviewed-by: NRob Herring <robh@kernel.org>
Acked-by: NGreentime Hu <greentime@andestech.com>
Signed-off-by: NGreentime Hu <greentime@andestech.com>
      cf26edd8
    • N
      nds32: Add perf call-graph support. · c8b34461
      由 Nickhu 提交于 
      The perf call-graph option can trace the callchain
between functions. This commit add the perf callchain
for nds32. There are kerenl callchain and user callchain.
The kerenl callchain can trace the function in kernel
space. There are two type for user callchain. One for the
'optimize for size' config is set, and another one for the
config is not set. The difference between two types is that
the index of frame-pointer in user stack is not the same.

For example:
	With optimize for size:
		User Stack:
			---------
			|   lp	|
			---------
			|	gp	|
			---------
			|	fp	|

	Without optimize for size:
		User Stack:
		1. non-leaf function:
			---------
			|	lp	|
			---------
			|	fp	|

		2. leaf	function:
			---------
			|	fp	|
Signed-off-by: NNickhu <nickhu@andestech.com>
Acked-by: NGreentime Hu <greentime@andestech.com>
Signed-off-by: NGreentime Hu <greentime@andestech.com>
      c8b34461
    • N
      nds32: Perf porting · ebd09753
      由 Nickhu 提交于 
      This is the commit that porting the perf for nds32.

1.Raw event:
	The raw events start with 'r'.
		Usage:
			perf stat -e rXYZ ./app
			X: the index of performance counter.
			YZ: the index(convert to hexdecimal) of events

		Example:
			'perf stat -e r101 ./app' means the counter 1 will count the instruction
		event.

		The index of counter and events can be found in
		"Andes System Privilege Architecture Version 3 Manual".

Or you can perform the 'perf list' to find the symbolic name of raw events.

2.Perf mmap2:

	Fix unexpected perf mmap2() page fault

	When the mmap2() called by perf application,
	you will encounter such condition:"failed to write."
	With return value -EFAULT

	This is due to the page fault caused by "reading" buffer
	from the mapped legal address region to write to the descriptor.
	The page_fault handler will get a VM_FAULT_SIGBUS return value,
	which should not happens here.(Due to this is a read request.)

	You can refer to kernel/events/core.c:perf_mmap_fault(...)
	If "(vmf->pgoff && (vmf->flags & FAULT_FLAG_WRITE))" is evaluated
	as true, you will get VM_FAULT_SIGBUS as return value.

	However, this is not an write request. The flags which indicated
	why the page fault happens is wrong.

	Furthermore, NDS32 SPAv3 is not able to detect it is read or write.
	It only know  either it is instruction fetch or data access.

	Therefore, by removing the wrong flag assignment(actually, the hardware
	is not able to show the reason), we can fix this bug.

3.Perf multiple events map to same counter.

	When there are multiple events map to the same counter, the counter
	counts inaccurately. This is because each counter only counts one event
	in the same time.
	So when there are multiple events map to same counter, they have to take
	turns in each context.

	There are two solution:
	1. Print the error message when multiple events map to the same counter.
	But print the error message would let the program hang in loop. The ltp
	(linux test program) would be failed when the program hang in loop.

	2. Don't print the error message, the ltp would pass. But the user need to
	have the knowledge that don't count the events which map to the same
	counter, or the user will get the inaccurate results.

	We choose method 2 for the solution
Signed-off-by: NNickhu <nickhu@andestech.com>
Acked-by: NGreentime Hu <greentime@andestech.com>
Signed-off-by: NGreentime Hu <greentime@andestech.com>
      ebd09753
    • N
      nds32: Fix bug in bitfield.h · 9aaafac8
      由 Nickhu 提交于 
      There two bitfield bug for perfomance counter
in bitfield.h:

	PFM_CTL_offSEL1		21 --> 16
	PFM_CTL_offSEL2		27 --> 22

This commit fix it.
Signed-off-by: NNickhu <nickhu@andestech.com>
Acked-by: NGreentime Hu <greentime@andestech.com>
Signed-off-by: NGreentime Hu <greentime@andestech.com>
      9aaafac8
    • N
      nds32: Fix gcc 8.0 compiler option incompatible. · 4c3d6174
      由 Nickhu 提交于 
      When the kernel configs of ftrace and frame pointer options are
choosed, the compiler option of kernel will incompatible.
	Error message:
		nds32le-linux-gcc: error: -pg and -fomit-frame-pointer are incompatible
Signed-off-by: NNickhu <nickhu@andestech.com>
Signed-off-by: NZong Li <zong@andestech.com>
Acked-by: NGreentime Hu <greentime@andestech.com>
Signed-off-by: NGreentime Hu <greentime@andestech.com>
      4c3d6174
    • Z
      nds32: Fill all TLB entries with kernel image mapping · 8730c178
      由 Zong Li 提交于 
      We use earlycon replace with early_printk and doesn't use
early_io_map() to create UART mapping. It is not necessary
to reserve the one way in TLB for now.

It didn't make sense if use direct-mapped and reserve one
way at the same time. It allow the direct-mapped now.
Signed-off-by: NZong Li <zong@andestech.com>
Signed-off-by: NGreentime Hu <greentime@andestech.com>
      8730c178
    • Z
      nds32: Remove the redundant assignment · 2e95c4d6
      由 Zong Li 提交于 
      For early version, the value of r2 register was used to display
a character on UART when error occurred. Remove these r2 assignments
because we no longer show the character.
Signed-off-by: NZong Li <zong@andestech.com>
Signed-off-by: NGreentime Hu <greentime@andestech.com>
      2e95c4d6
  5. 05 11月, 2018 5 次提交
    • L
      Linux 4.20-rc1 · 65102238
      由 Linus Torvalds 提交于
      65102238
    • L
      Merge tag 'tags/upstream-4.20-rc1' of git://git.infradead.org/linux-ubifs · 42bd06e9
      由 Linus Torvalds 提交于 
      Pull UBIFS updates from Richard Weinberger:

 - Full filesystem authentication feature, UBIFS is now able to have the
   whole filesystem structure authenticated plus user data encrypted and
   authenticated.

 - Minor cleanups

* tag 'tags/upstream-4.20-rc1' of git://git.infradead.org/linux-ubifs: (26 commits)
  ubifs: Remove unneeded semicolon
  Documentation: ubifs: Add authentication whitepaper
  ubifs: Enable authentication support
  ubifs: Do not update inode size in-place in authenticated mode
  ubifs: Add hashes and HMACs to default filesystem
  ubifs: authentication: Authenticate super block node
  ubifs: Create hash for default LPT
  ubfis: authentication: Authenticate master node
  ubifs: authentication: Authenticate LPT
  ubifs: Authenticate replayed journal
  ubifs: Add auth nodes to garbage collector journal head
  ubifs: Add authentication nodes to journal
  ubifs: authentication: Add hashes to index nodes
  ubifs: Add hashes to the tree node cache
  ubifs: Create functions to embed a HMAC in a node
  ubifs: Add helper functions for authentication support
  ubifs: Add separate functions to init/crc a node
  ubifs: Format changes for authentication support
  ubifs: Store read superblock node
  ubifs: Drop write_node
  ...
      42bd06e9
    • L
      Merge tag 'nfs-for-4.20-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs · 4710e789
      由 Linus Torvalds 提交于 
      Pull NFS client bugfixes from Trond Myklebust:
 "Highlights include:

  Bugfix:
   - Fix build issues on architectures that don't provide 64-bit cmpxchg

  Cleanups:
   - Fix a spelling mistake"

* tag 'nfs-for-4.20-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFS: fix spelling mistake, EACCESS -> EACCES
  SUNRPC: Use atomic(64)_t for seq_send(64)
      4710e789
    • L
      Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 35e74524
      由 Linus Torvalds 提交于 
      Pull more timer updates from Thomas Gleixner:
 "A set of commits for the new C-SKY architecture timers"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  dt-bindings: timer: gx6605s SOC timer
  clocksource/drivers/c-sky: Add gx6605s SOC system timer
  dt-bindings: timer: C-SKY Multi-processor timer
  clocksource/drivers/c-sky: Add C-SKY SMP timer
      35e74524
    • L
      Merge tag 'ntb-4.20' of git://github.com/jonmason/ntb · 04578e84
      由 Linus Torvalds 提交于 
      Pull NTB updates from Jon Mason:
 "Fairly minor changes and bug fixes:

  NTB IDT thermal changes and hook into hwmon, ntb_netdev clean-up of
  private struct, and a few bug fixes"

* tag 'ntb-4.20' of git://github.com/jonmason/ntb:
  ntb: idt: Alter the driver info comments
  ntb: idt: Discard temperature sensor IRQ handler
  ntb: idt: Add basic hwmon sysfs interface
  ntb: idt: Alter temperature read method
  ntb_netdev: Simplify remove with client device drvdata
  NTB: transport: Try harder to alloc an aligned MW buffer
  ntb: ntb_transport: Mark expected switch fall-throughs
  ntb: idt: Set PCIe bus address to BARLIMITx
  NTB: ntb_hw_idt: replace IS_ERR_OR_NULL with regular NULL checks
  ntb: intel: fix return value for ndev_vec_mask()
  ntb_netdev: fix sleep time mismatch
      04578e84
  7. 04 11月, 2018 23 次提交