This patch adds the error recovery for the HNS hw errors.
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Set of hw errors occurred in the HNS3 are reported to the
hns3 driver through PCIe AER and RAS.The error info will be
processed and appropriately recovered.
This patch adds error_detected callback and error processing.
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Clang warns (trimmed for brevity):
drivers/isdn/mISDN/tei.c:1193:7: warning: overflow converting case value
to switch condition type (2147764552 to 18446744071562348872) [-Wswitch]
case IMHOLD_L1:
^
drivers/isdn/mISDN/tei.c:1187:7: warning: overflow converting case value
to switch condition type (2147764550 to 18446744071562348870) [-Wswitch]
case IMCLEAR_L2:
^
2 warnings generated.
The root cause is that the _IOC macro can generate really large numbers,
which don't find into type int. My research into how GCC and Clang are
handling this at a low level didn't prove fruitful and surveying the
kernel tree shows that aside from here and a few places in the scsi
subsystem, everything that uses _IOC is at least of type 'unsigned int'.
Make that change here because as nothing in this function cares about
the signedness of the variable and it removes ambiguity, which is never
good when dealing with compilers.
While we're here, remove the unnecessary local variable ret (just return
-EINVAL and 0 directly).
Link: https://github.com/ClangBuiltLinux/linux/issues/67
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We have seen the following race scenario:
1) named_distribute() builds a "bulk" message, containing a PUBLISH
item for a certain publication. This is based on the contents of
the binding tables's 'cluster_scope' list.
2) tipc_named_withdraw() removes the same publication from the list,
bulds a WITHDRAW message and distributes it to all cluster nodes.
3) tipc_named_node_up(), which was calling named_distribute(), sends
out the bulk message built under 1)
4) The WITHDRAW message arrives at the just detected node, finds
no corresponding publication, and is dropped.
5) The PUBLISH item arrives at the same node, is added to its binding
table, and remains there forever.
This arrival disordering was earlier taken care of by the backlog queue,
originally added for a different purpose, which was removed in the
commit referred to below, but we now need a different solution.
In this commit, we replace the rcu lock protecting the 'cluster_scope'
list with a regular RW lock which comprises even the sending of the
bulk message. This both guarantees both the list integrity and the
message sending order. We will later add a commit which cleans up
this code further.
Note that this commit needs recently added commit d3092b2efc ("tipc:
fix unsafe rcu locking when accessing publication list") to apply
cleanly.
Fixes: 37922ea4a3 ("tipc: permit overlapping service ranges in name table")
Reported-by: Tuong Lien Tong <tuong.t.lien@dektech.com.au>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/ethernet/marvell/octeontx2/af/rvu.c: In function 'rvu_detach_rsrcs':
drivers/net/ethernet/marvell/octeontx2/af/rvu.c:855:6: warning:
variable 'devnum' set but not used [-Wunused-but-set-variable]
drivers/net/ethernet/marvell/octeontx2/af/rvu.c:853:7: warning:
variable 'is_pf' set but not used [-Wunused-but-set-variable]
drivers/net/ethernet/marvell/octeontx2/af/rvu.c: In function 'rvu_mbox_handler_ATTACH_RESOURCES':
drivers/net/ethernet/marvell/octeontx2/af/rvu.c:1054:7: warning:
variable 'is_pf' set but not used [-Wunused-but-set-variable]
drivers/net/ethernet/marvell/octeontx2/af/rvu.c:1053:6: warning:
variable 'devnum' set but not used [-Wunused-but-set-variable]
It never used since introduction in commit
746ea74241 ("octeontx2-af: Add RVU block LF provisioning support")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c: In function 'rvu_npa_init':
drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c:446:20: warning:
variable 'block' set but not used [-Wunused-but-set-variable]
It never used since introduction in
commit 7a37245ef2 ("octeontx2-af: NPA block admin queue init")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gustavo A. R. Silva says:
====================
phy: ocelot-serdes: fix out-of-bounds read
This patchset aims to fix an out-of-bounds bug in
the phy-ocelot-serdes driver.
Currently, there is an out-of-bounds read on array ctrl->phys,
once variable i reaches the maximum array size of SERDES_MAX
in the for loop.
Quentin Schulz pointed out that SERDES_MAX is a valid value to
index ctrl->phys. So, I updated SERDES_MAX to be SERDES6G_MAX + 1
in include/dt-bindings/phy/phy-ocelot-serdes.h.
Then I changed the condition in the for loop from
i <= SERDES_MAX to i < SERDES_MAX in order to
complete the fix.
The reason I'm sending this fix as series is because
checkpatch reported an error when I first tried to
integrate the whole solution into a singe patch. So,
changes to dt-bindings should be sent as a separate
patch.
Changes in v3:
- Post the series to netdev, so Dave can take it.
Changes in v2:
- Send the whole series to Kishon Vijay Abraham I, so it
can be taken into the PHY tree.
- Add Quentin's Reviewed-by to commit log in both patches.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently, there is an out-of-bounds read on array ctrl->phys,
once variable i reaches the maximum array size of SERDES_MAX
in the for loop.
Fix this by changing the condition in the for loop from
i <= SERDES_MAX to i < SERDES_MAX.
Addresses-Coverity-ID: 1473966 ("Out-of-bounds read")
Addresses-Coverity-ID: 1473959 ("Out-of-bounds read")
Fixes: 51f6b410fc ("phy: add driver for Microsemi Ocelot SerDes muxing")
Reviewed-by: Quentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
SERDES_MAX is a valid value to index ctrl->phys in
drivers/phy/mscc/phy-ocelot-serdes.c. But, currently,
there is an out-of-bounds bug in the mentioned driver
when reading from ctrl->phys, because the size of
array ctrl->phys is SERDES_MAX.
Partially fix this by updating SERDES_MAX to be SERDES6G_MAX + 1.
Notice that this is the first part of the solution to
the out-of-bounds bug mentioned above. Although this
change is not dependent on any other one.
Suggested-by: Quentin Schulz <quentin.schulz@bootlin.com>
Reviewed-by: Quentin Schulz <quentin.schulz@bootlin.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Got below warning with gcc 8.2 compiler.
net/tipc/topsrv.c: In function ‘tipc_topsrv_start’:
net/tipc/topsrv.c:660:2: warning: ‘strncpy’ specified bound depends on the length of the source argument [-Wstringop-overflow=]
strncpy(srv->name, name, strlen(name) + 1);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
net/tipc/topsrv.c:660:27: note: length computed here
strncpy(srv->name, name, strlen(name) + 1);
^~~~~~~~~~~~
So change it to correct length and use strscpy.
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Clang warns:
drivers/isdn/hisax/hfc_pci.c:131:34: error: if statement has empty body
[-Werror,-Wempty-body]
if (Read_hfc(cs, HFCPCI_INT_S1));
^
drivers/isdn/hisax/hfc_pci.c:131:34: note: put the semicolon on a
separate line to silence this warning
In my attempt to hide the warnings because I thought they didn't serve
any purpose[1], Masahiro Yamada pointed out that {Read,Write}_hfc in
hci_pci.c should be using a standard register access method; otherwise,
the compiler will just remove the if statements.
For hfc_pci, use the versions of {Read,Write}_hfc found in
drivers/isdn/hardware/mISDN/hfc_pCI.h while converting pci_io to be
'void __iomem *' (and clean up ioremap) then remove the empty if
statements.
For hfc_sx, {Read,Write}_hfc are already use a proper register accessor
(inb, outb) so just remove the unnecessary if statements.
[1]: https://lore.kernel.org/lkml/20181016021454.11953-1-natechancellor@gmail.com/
Link: https://github.com/ClangBuiltLinux/linux/issues/66
Suggested-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
sparc: VDSO improvements
I started out on these changes with the goal of improving perf
annotations when the VDSO is in use. Due to lack of inlining the
helper functions are typically hit when profiling instead of
__vdso_gettimeoday() or __vdso_vclock_gettime().
The only symbols available by default are the dyanmic symbols,
which therefore doesn't cover the helper functions.
So the perf output looks terrible, because the symbols cannot be
resolved and all show up as "Unknown".
The sparc VDSO code forces no inlining because of the way the
simplistic %tick register read code patching works. So fixing that
was the first order of business. Tricks were taken from how x86
implements alternates. The crucial factor is that if you want to
refer to locations (for the original and patch instruction(s)) you
have to do so in a way that is resolvable at link time even for a
shared object. So you have to do this by storing PC-relative
values, and not in executable sections.
Next, we sanitize the Makefile so that the cflags et al. make more
sense. And LDFLAGS are applied actually to invocations of LD instead
of CC.
We also add some sanity checking, specifically in a post-link check
that makes sure we don't have any unexpected unresolved symbols in the
VDSO. This is essential because the dynamic linker cannot resolve
symbols in the VDSO because it cannot write to it.
Finally some very minor optimizations are preformed to the
vclock_gettime.c code. One thing which is tricky with this code on
sparc is that struct timeval and struct timespec are layed out
differently on 64-bit. This is because, unlike other architectures,
sparc defined suseconds_t as 'int' even on 64-bit. This is why we
have all of the "union" tstv_t" business and the weird assignments
in __vdso_gettimeofday().
Performance wise we do gain some cycle shere, specifically here
are cycle counts for a user application calling gettimeofday():
no-VDSO VDSO-orig VDSO-new
================================================
64-bit 853 cycles 112 cycles 125 cycles
32-bit 849 cycles 134 cycles 141 cycles
These results are with current glibc sources.
To get better we'd need to implement this in assembler, and I might
just do that at some point.
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch does below changes to keep consistence of project quota data
in sudden power-cut case:
- update inode.i_projid and project quota atomically under lock_op() in
f2fs_ioc_setproject()
- recover inode.i_projid and project quota in recover_inode()
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
For journalled quota mode, let checkpoint to flush dquot dirty data
and quota file data to guarntee persistence of all quota sysfile in
last checkpoint, by this way, we can avoid corrupting quota sysfile
when encountering SPO.
The implementation is as below:
1. add a global state SBI_QUOTA_NEED_FLUSH to indicate that there is
cached dquot metadata changes in quota subsystem, and later checkpoint
should:
a) flush dquot metadata into quota file.
b) flush quota file to storage to keep file usage be consistent.
2. add a global state SBI_QUOTA_NEED_REPAIR to indicate that quota
operation failed due to -EIO or -ENOSPC, so later,
a) checkpoint will skip syncing dquot metadata.
b) CP_QUOTA_NEED_FSCK_FLAG will be set in last cp pack to give a
hint for fsck repairing.
3. add a global state SBI_QUOTA_SKIP_FLUSH, in checkpoint, if quota
data updating is very heavy, it may cause hungtask in block_operation().
To avoid this, if our retry time exceed threshold, let's just skip
flushing and retry in next checkpoint().
Signed-off-by: Weichao Guo <guoweichao@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
[Jaegeuk Kim: avoid warnings and set fsck flag]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Direct IO can be used in case of hardware encryption. The following
scenario results into data corruption issue in this path -
Thread A - Thread B-
-> write file#1 in direct IO
-> GC gets kicked in
-> GC submitted bio on meta mapping
for file#1, but pending completion
-> write file#1 again with new data
in direct IO
-> GC bio gets completed now
-> GC writes old data to the new
location and thus file#1 is
corrupted.
Fix this by submitting and waiting for pending io on meta mapping
for direct IO case in f2fs_map_blocks().
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Testcase to reproduce this bug:
1. mkfs.f2fs /dev/sdd
2. mount -t f2fs /dev/sdd /mnt/f2fs
3. touch /mnt/f2fs/file
4. sync
5. chattr +a /mnt/f2fs/file
6. xfs_io -a /mnt/f2fs/file -c "fsync"
7. godown /mnt/f2fs
8. umount /mnt/f2fs
9. mount -t f2fs /dev/sdd /mnt/f2fs
10. xfs_io /mnt/f2fs/file
There is no error when opening this file w/o O_APPEND, but actually,
we expect the correct result should be:
/mnt/f2fs/file: Operation not permitted
The root cause is, in recover_inode(), we recover inode->i_flags more
than F2FS_I(inode)->i_flags, so fix it.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This patch changes codes as below:
- use f2fs_set_inode_flags() to update i_flags atomically to avoid
potential race.
- synchronize F2FS_I(inode)->i_flags to inode->i_flags in
f2fs_new_inode().
- use f2fs_set_inode_flags() to simply codes in f2fs_quota_{on,off}.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
We need to drop PG_checked flag on page as well when we clear PG_uptodate
flag, in order to avoid treating the page as GCing one later.
Signed-off-by: Weichao Guo <guoweichao@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This reverts commit 66110abc4c.
If we clear the cold data flag out of the writeback flow, we can miscount
-1 by end_io, which incurs a deadlock caused by all I/Os being blocked during
heavy GC.
Balancing F2FS Async:
- IO (CP: 1, Data: -1, Flush: ( 0 0 1), Discard: ( ...
GC thread: IRQ
- move_data_page()
- set_page_dirty()
- clear_cold_data()
- f2fs_write_end_io()
- type = WB_DATA_TYPE(page);
here, we get wrong type
- dec_page_count(sbi, type);
- f2fs_wait_on_page_writeback()
Cc: <stable@vger.kernel.org>
Reported-and-Tested-by: Park Ju Hyung <qkrwngud825@gmail.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This patch adds issued read IO counts which is under block layer.
Chao modified a bit, since:
Below race can cause reversed reference on F2FS_RD_DATA, there is
the same issue in f2fs_submit_page_bio(), fix them by relocate
__submit_bio() and inc_page_count.
Thread A Thread B
- f2fs_write_begin
- f2fs_submit_page_read
- __submit_bio
- f2fs_read_end_io
- __read_end_io
- dec_page_count(, F2FS_RD_DATA)
- inc_page_count(, F2FS_RD_DATA)
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
The biggest chunk of the regulator changes for this release outside of
the new drivers is the conversion of the fixed regulator to use the GPIO
descriptor API, there's a small addition to the GPIO API plus a bunch of
updates to board files to implement it. This is some really welcome
work from Linus Walleij that's had a bunch of review and has been
sitting in -next for a while so I'm fairly happy there's no major
issues.
- Helpers for overlapping linear ranges.
- Display opmode and consumer requested load in the regualtor_summary
file in debugfs, plus a fix there.
- Support for the fun and entertaining power off mechanism that the
pfuze100 hardware implements.
- Conversion of the fixed regulator API to use GPIO descriptors,
including pulling in a bunch of patches to a bunch of board files.
- New drivers for Cirrus Logic Lochnagar, Qualcomm PMS405, Rohm
BD71847, ST PMIC1, and TI LM363x devices.
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Merge tag 'regulator-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"The biggest chunk of the regulator changes for this release outside of
the new drivers is the conversion of the fixed regulator to use the
GPIO descriptor API, there's a small addition to the GPIO API plus a
bunch of updates to board files to implement it. This is some really
welcome work from Linus Walleij that's had a bunch of review and has
been sitting in -next for a while so I'm fairly happy there's no major
issues.
- Helpers for overlapping linear ranges.
- Display opmode and consumer requested load in the regualtor_summary
file in debugfs, plus a fix there.
- Support for the fun and entertaining power off mechanism that the
pfuze100 hardware implements.
- Conversion of the fixed regulator API to use GPIO descriptors,
including pulling in a bunch of patches to a bunch of board files.
- New drivers for Cirrus Logic Lochnagar, Qualcomm PMS405, Rohm
BD71847, ST PMIC1, and TI LM363x devices"
* tag 'regulator-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (36 commits)
regulator: lochnagar: Use a consisent comment style for SPDX header
regulator: bd718x7: Remove struct bd718xx_pmic
regulator: Fetch enable gpiods nonexclusive
regulator/gpio: Allow nonexclusive GPIO access
regulator: lochnagar: Add support for the Cirrus Logic Lochnagar
regulator: stpmic1: Return REGULATOR_MODE_INVALID for invalid mode
regulator: stpmic1: add stpmic1 regulator driver
dt-bindings: regulator: document stpmic1 pmic regulators
regulator: axp20x: Mark expected switch fall-throughs
regulator: bd718xx: fix build warning on x86_64
regulator: fixed: Default enable high on DT regulators
regulator: bd718xx: rename bd71837 to 718xx
regulator: bd718XX use pickable ranges
regulator/mfd: bd718xx: rename bd71837/bd71847 common instances
regulator: Support regulators where voltage ranges are selectable
mfd: dt bindings: add BD71847 device-tree binding documentation
regulator: dt bindings: add BD71847 device-tree binding documentation
regulator/mfd: Support ROHM BD71847 power management IC
regulator: da905{2,5}: Remove unnecessary array check
regulator: qcom: Add PMS405 regulators
...
Now, we have supported cgroup writeback, it depends on correctly IO
account of specified filesystem.
But in commit d1b3e72d54 ("f2fs: submit bio of in-place-update pages"),
we split write paths from f2fs_submit_page_mbio() to two:
- f2fs_submit_page_bio() for IPU path
- f2fs_submit_page_bio() for OPU path
But still we account write IO only in f2fs_submit_page_mbio(), result in
incorrect IO account, fix it by adding missing IO account in IPU path.
Fixes: d1b3e72d54 ("f2fs: submit bio of in-place-update pages")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Below race can cause reversed reference on dirty count, fix it by
relocating __submit_bio() and inc_page_count().
Thread A Thread B
- f2fs_inplace_write_data
- f2fs_submit_page_bio
- __submit_bio
- f2fs_write_end_io
- dec_page_count
- inc_page_count
Cc: <stable@vger.kernel.org>
Fixes: d1b3e72d54 ("f2fs: submit bio of in-place-update pages")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Almost entirely borrowed from the x86 code.
Main improvement is to avoid having to initialize
ts->tv_nsec to zero before the sequence loops, by
expanding timespec_add_ns().
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch series now has evolved to contain several related changes.
1. Updated the assorted cleanup series by Palmer.
The original cleanup patch series can be found here.
http://lists.infradead.org/pipermail/linux-riscv/2018-August/001232.html
2. Implemented decoupling linux logical CPU ids from hart id.
Some of the work has been inspired from ARM64.
Tested on QEMU & HighFive Unleashed board with/without SMP enabled.
3. Included Anup's cleanup and IPI stat patch.
All the patch series have been combined to avoid conflicts as a lot of
common code is changed different patch sets. Atish has mostly addressed
review comments and fixed checkpatch errors from Palmer's and Anup's
series.
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This patch set fixes up various failures in the RV32I port. The fixes
are all nominally independent, but are really only testable together
because the RV32I port fails to build without all of them. The patch
set includes:
* The removal of tishift on RV32I targets, as 128-bit integers are not
supported by the toolchain.
* The removal of swiotlb from RV32I targets, since all physical
addresses can be mapped by all hardware on all existing RV32I targets.
* The addition of ummodi3 and udivmoddi4 from an old version of GCC that
was licensed under GPLv2 as generic code, along with their use on
RV32I targets.
* A fix to our page alignment logic within ioremap for RV32I targets.
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This patchset adds an option, CONFIG_FPU, to enable/disable floating-
point support within the kernel. The kernel's new behavior will be as
follows:
* with CONFIG_FPU=y
All FPU codes are reserved. If no FPU is found during booting, a
global flag will be set, and those functions will be bypassed with
condition check to that flag.
* with CONFIG_FPU=n
No floating-point instructions in kernel and all related settings
are excluded.
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
* Move the built-in cmdline configuration on a new menu entry "Boot
options", it doesn't make much sense to be part of the debuging menu.
* Rename "Kernel Type" menu to "Kernel features" to be more consistent with
what other architectures are using, plus "type" is a bit misleading here.
Signed-off-by: Nick Kossifidis <mick@ics.forth.gr>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This export is not only not needed, but also breaks symbol versioning
due to being an undeclared assembly export.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Here is an attempt to add the missing futex support. I started with the MIPS
version of futex.h and modified it until I got it working. I tested it on
a HiFive Unleashed running Fedora Core 29 using the fc29 4.15 version of the
kernel. This was tested against the glibc testsuite, where it fixes 14 nptl
related testsuite failures. That unfortunately only tests the cmpxchg support,
so I also used the testcase at the end of
https://lwn.net/Articles/148830/
which tests the atomic_op functionality, except that it doesn't verify that
the operations are atomic, which they obviously are. This testcase runs
successfully with the patch and fails without it.
I'm not a kernel expert, so there could be details I got wrong here. I wasn't
sure about the memory model support, so I used aqrl which seemed safest, and
didn't add fences which seemed unnecessary. I'm not sure about the copyright
statements, I left in Ralf Baechle's line because I started with his code.
Checkpatch reports some style problems, but it is the same style as the MIPS
futex.h, and the uses of ENOSYS appear correct even though it complains about
them. I don't know if any of that matters.
This patch was tested on qemu with the glibc nptl/tst-cond-except
testcase, and the wake_op testcase from above.
Signed-off-by: Jim Wilson <jimw@sifive.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Add a variable and a macro to describe FP registers, assuming only D is
supported. FP code is conditional on CONFIG_FPU. The FP regs and FCSR
are copied separately to avoid copying struct padding. Tested by hand and
with the gdb testsuite.
Signed-off-by: Jim Wilson <jimw@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
The RISC-V Linux port doesn't support systems that have the F extension
but don't have the D extension -- we actually don't support systems
without D either, but Alan's patch set is rectifying that soon. For now
I think we can leave this in a semi-broken state and just wait for
Alan's patch set to get merged for proper non-FPU support -- the patch
set is starting to look good, so doing something in-between doesn't seem
like it's worth the work.
I don't think it's worth fretting about support for systems with F but
not D for now: our glibc ABIs are IMAC and IMAFDC so they probably won't
end up being popular. We can always extend this in the future.
CC: Alan Kao <alankao@andestech.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
These are just hard coded in the RISC-V port, which doesn't make any
sense. We should probably be setting these from device tree entries
when they exist, but for now I think it's saner to just leave them all
as their default values.
Reviewed-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
One new core feature here, a small collection of new drivers and a bunch
of small improvements in existing drivers.
- A new CS_WORD flag for transfers where the chip select is toggled at
every word, with both a generic implementation and the ability for
controllers to do this automatically (including a DaVinci one).
- New drivers for Mediatek MT2712, Qualcomm GENI and QSPI, Spreadtrum
SPI and ST STM32 QSPI plus new IDs for several existing ones.
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Merge tag 'spi-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"One new core feature here, a small collection of new drivers and a
bunch of small improvements in existing drivers:
- A new CS_WORD flag for transfers where the chip select is toggled
at every word, with both a generic implementation and the ability
for controllers to do this automatically (including a DaVinci one).
- New drivers for Mediatek MT2712, Qualcomm GENI and QSPI, Spreadtrum
SPI and ST STM32 QSPI plus new IDs for several existing ones"
* tag 'spi-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (86 commits)
spi: lpspi: add imx8qxp compatible string
spi: Allow building SPI_BCM63XX_HSSPI on ARM-based SoCs
spi: omap2-mcspi: Add slave mode support
spi: omap2-mcspi: Set FIFO DMA trigger level to word length
spi: omap2-mcspi: Switch to readl_poll_timeout()
spi: spi-mem: add stm32 qspi controller
dt-bindings: spi: add stm32 qspi controller
spi: sh-msiof: document R8A779{7|8}0 bindings
spi: pic32-sqi: don't pass GFP_DMA32 to dma_alloc_coherent
MAINTAINERS: Add entry for Broadcom SPI controller
spi: sh-msiof: fix deferred probing
spi: imx: use PIO mode if size is small
spi: imx: correct wml as the last sg length
spi: imx: move wml setting to later than setup_transfer
PCI: Provide pci_match_id() with CONFIG_PCI=n
spi: Make GPIO CSs honour the SPI_NO_CS flag
spi/spi-pxa2xx: add PXA2xx SSP SPI Controller
spi: pxa2xx: Add devicetree support
spi: pxa2xx: Use an enum for type
spi: spi-geni-qcom: Add SPI driver support for GENI based QUP
...
A small update with a couple of new APIs that are useful for some small
sets of devices:
- Split up the single_rw flagging to map read and write separately as
some devices support bulk operations for only read or only write.
- Add a write version of the noinc API.
- Clean up the code for LOG_DEVICE a bit.
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Merge tag 'regmap-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"A small update with a couple of new APIs that are useful for some
small sets of devices:
- Split up the single_rw flagging to map read and write separately as
some devices support bulk operations for only read or only write.
- Add a write version of the noinc API.
- Clean up the code for LOG_DEVICE a bit"
* tag 'regmap-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: use less #ifdef for LOG_DEVICE
regmap: Add regmap_noinc_write API
regmap: split up regmap_config.use_single_rw
regmap: fix comment for regmap.use_single_write
Core changes:
* Support non-uniform erase size
* Support controllers with limited TX fifo size
Driver changes:
* m25p80: Re-issue a WREN command after each write access
* cadence: Pass a proper dir value to dma_[un]map_single()
* fsl-qspi: Check fsl_qspi_get_seqid() return val make sure 4B
addressing opcodes are properly handled
* intel-spi: Add a new PCI entry for Ice Lake
NAND changes:
Raw NAND core changes:
- Two batchs of cleanups of the NAND API, including:
* Deprecating a lot of interfaces (now replaced by ->exec_op()).
* Moving code in separate drivers (JEDEC, ONFI), in private files
(internals), in platform drivers, etc.
* Functions/structures reordering.
* Exclusive use of the nand_chip structure instead of the MTD one
all across the subsystem.
- Addition of the nand_wait_readrdy/rdy_op() helpers.
Raw NAND controllers drivers changes:
- Various coccinelle patches.
- Marvell:
* Use regmap_update_bits() for syscon access.
* More documentation.
* BCH failure path rework.
* More layouts to be supported.
* IRQ handler complete() condition fixed.
- Fsl_ifc:
* SRAM initialization fixed for newer controller versions.
- Denali:
* Fix licenses mismatch and use a SPDX tag.
* Set SPARE_AREA_SKIP_BYTES register to 8 if unset.
- Qualcomm:
* Do not include dma-direct.h.
- Docg4:
* Removed.
- Ams-delta:
* Use of a GPIO lookup table
* Internal machinery changes.
Raw NAND chip drivers changes:
- Toshiba:
* Add support for Toshiba memory BENAND
* Pass a single nand_chip object to the status helper.
- ESMT:
* New driver to retrieve the ECC requirements from the 5th ID byte.
MTD changes:
* physmap cleanups/fixe
* gpio-addr-flash cleanups/fixes
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Merge tag 'mtd/for-4.20' of git://git.infradead.org/linux-mtd
Pull mtd updates from Boris Brezillon:
"SPI NOR core changes:
- Support non-uniform erase size
- Support controllers with limited TX fifo size
Driver changes:
- m25p80: Re-issue a WREN command after each write access
- cadence: Pass a proper dir value to dma_[un]map_single()
- fsl-qspi: Check fsl_qspi_get_seqid() return val make sure 4B
addressing opcodes are properly handled
- intel-spi: Add a new PCI entry for Ice Lake
Raw NAND core changes:
- Two batchs of cleanups of the NAND API, including:
* Deprecating a lot of interfaces (now replaced by ->exec_op()).
* Moving code in separate drivers (JEDEC, ONFI), in private files
(internals), in platform drivers, etc.
* Functions/structures reordering.
* Exclusive use of the nand_chip structure instead of the MTD one
all across the subsystem.
- Addition of the nand_wait_readrdy/rdy_op() helpers.
Raw NAND controllers drivers changes:
- Various coccinelle patches.
- Marvell:
* Use regmap_update_bits() for syscon access.
* More documentation.
* BCH failure path rework.
* More layouts to be supported.
* IRQ handler complete() condition fixed.
- Fsl_ifc:
* SRAM initialization fixed for newer controller versions.
- Denali:
* Fix licenses mismatch and use a SPDX tag.
* Set SPARE_AREA_SKIP_BYTES register to 8 if unset.
- Qualcomm:
* Do not include dma-direct.h.
- Docg4:
* Removed.
- Ams-delta:
* Use of a GPIO lookup table
* Internal machinery changes.
Raw NAND chip drivers changes:
- Toshiba:
* Add support for Toshiba memory BENAND
* Pass a single nand_chip object to the status helper.
- ESMT:
* New driver to retrieve the ECC requirements from the 5th ID
byte.
MTD changes:
- physmap cleanups/fixe
- gpio-addr-flash cleanups/fixes"
* tag 'mtd/for-4.20' of git://git.infradead.org/linux-mtd: (93 commits)
jffs2: free jffs2_sb_info through jffs2_kill_sb()
mtd: spi-nor: fsl-quadspi: fix read error for flash size larger than 16MB
mtd: spi-nor: intel-spi: Add support for Intel Ice Lake SPI serial flash
mtd: maps: gpio-addr-flash: Convert to gpiod
mtd: maps: gpio-addr-flash: Replace array with an integer
mtd: maps: gpio-addr-flash: Use order instead of size
mtd: spi-nor: fsl-quadspi: Don't let -EINVAL on the bus
mtd: devices: m25p80: Make sure WRITE_EN is issued before each write
mtd: spi-nor: Support controllers with limited TX FIFO size
mtd: spi-nor: cadence-quadspi: Use proper enum for dma_[un]map_single
mtd: spi-nor: parse SFDP Sector Map Parameter Table
mtd: spi-nor: add support to non-uniform SFDP SPI NOR flash memories
mtd: rawnand: marvell: fix the IRQ handler complete() condition
mtd: rawnand: denali: set SPARE_AREA_SKIP_BYTES register to 8 if unset
mtd: rawnand: r852: fix spelling mistake "card_registred" -> "card_registered"
mtd: rawnand: toshiba: Pass a single nand_chip object to the status helper
mtd: maps: gpio-addr-flash: Use devm_* functions
mtd: maps: gpio-addr-flash: Fix ioremapped size
mtd: maps: gpio-addr-flash: Replace custom printk
mtd: physmap_of: Release resources on error
...
This patch provides arch_show_interrupts() implementation to
show IPI stats via /proc/interrupts.
Now the contents of /proc/interrupts" will look like below:
CPU0 CPU1 CPU2 CPU3
8: 17 7 6 14 SiFive PLIC 8 virtio0
10: 10 10 9 11 SiFive PLIC 10 ttyS0
IPI0: 170 673 251 79 Rescheduling interrupts
IPI1: 1 12 27 1 Function call interrupts
Signed-off-by: Anup Patel <anup@brainfault.org>
[Atish - Fixed checkpatch errors]
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Changes since v2:
- Remove use of IPI_CALL_WAKEUP because it's being removed
Changes since v1:
- Add stub inline show_ipi_stats() function for !CONFIG_SMP
- Make ipi_names[] dynamically sized at compile time
- Minor beautification of ipi_names[] using tabs
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Currently, /proc/cpuinfo show logical CPU ID as Hart ID which
is in-correct. This patch shows CPU ID and Hart ID separately
in /proc/cpuinfo using cpuid_to_hardid_map().
With this patch, contents of /proc/cpuinfo looks as follows:
processor : 0
hart : 1
isa : rv64imafdc
mmu : sv48
processor : 1
hart : 0
isa : rv64imafdc
mmu : sv48
processor : 2
hart : 2
isa : rv64imafdc
mmu : sv48
processor : 3
hart : 3
isa : rv64imafdc
mmu : sv48
Signed-off-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Setup the cpu_logical_map during boot. Moreover, every SBI call
and PLIC context are based on the physical hartid. Use the logical
CPU to hartid mapping to pass correct hartid to respective functions.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Currently, both Linux CPU id and hart id are same.
This is not recommended as it will lead to discontinuous CPU
indexing in Linux. Moreover, kdump kernel will run from CPU0
which would be absent if we follow existing scheme.
Implement a logical mapping between Linux CPU id and hart
id to decouple these two. Always mark the boot processor as
CPU0 and all other CPUs get the logical CPU id based on their
booting order.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
The secondary harts spin on couple of per cpu variables until both of
these are non-zero so it's not necessary to have any ordering here.
However, WRITE_ONCE should be used to avoid tearing.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
commit f1f1007644 ("mm: add new mmgrab() helper") added a
helper that we missed out on.
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
The old name was a bit odd.
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
It's a bit confusing exactly what this function does: it actually
returns the hartid of an OF processor node, failing with -1 on invalid
nodes. I've changed the name to _hartid() in order to make that a bit
more clear, as well as adding a comment.
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
[Atish: code comment formatting update]
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
I'm not sure how I managed to miss this the first time, but this is much
better.
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
[Atish: code comment formatting and other fixes]
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Currently, irq is enabled before preemption disabling happens.
If the scheduler fired right here and cpu is scheduled then it
may blow up.
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
[Atish: Commit text and code comment formatting update]
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
We shouldn't be directly passing device tree values to userspace, both
because there could be mistakes in device trees and because the kernel
doesn't support arbitrary ISAs.
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
[Atish: checkpatch fix and code comment formatting update]
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
