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* PCI/ACPI: Provide acpi_get_rc_resources() for ARM64 platformDongdong Liu2016-12-062-0/+81
| | | | | | | | | | | | The acpi_get_rc_resources() is used to get the RC register address that can not be described in MCFG. It takes the _HID & segment to look for and outputs the RC address resource. Use PNP0C02 devices to describe such RC address resource. Use _UID to match segment to tell which root bus the PNP0C02 resource belongs to. [bhelgaas: add dev argument, wrap in #ifdef CONFIG_PCI_QUIRKS] Signed-off-by: Dongdong Liu <liudongdong3@huawei.com> Signed-off-by: Tomasz Nowicki <tn@semihalf.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* PCI/ACPI: Check for platform-specific MCFG quirksTomasz Nowicki2016-12-061-6/+86
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PCIe spec (r3.0, sec 7.2.2) specifies an "Enhanced Configuration Access Mechanism" (ECAM) for memory-mapped access to configuration space. ECAM is required for PCIe systems unless there's a standard firmware interface for config access. In the absence of a firmware interface, we use pci_generic_ecam_ops, and on ACPI systems, we discover the ECAM space via the MCFG table and/or the _CBA method. Unfortunately some systems provide MCFG but don't implement ECAM according to spec, so we need a mechanism for quirks to make those systems work. Add an MCFG quirk mechanism to override the config accessor functions and/or the memory-mapped address space. A quirk is selected if it matches all of the following: - OEM ID - OEM Table ID - OEM Revision - PCI segment (from _SEG) - PCI bus number range (from _CRS, wildcard allowed) If the quirk specifies config accessor functions or a memory-mapped address range, these override the defaults. [bhelgaas: changelog, reorder quirk matching, fix oem_revision typo per Duc, add under #ifdef CONFIG_PCI_QUIRKS] Signed-off-by: Tomasz Nowicki <tn@semihalf.com> Signed-off-by: Dongdong Liu <liudongdong3@huawei.com> Signed-off-by: Christopher Covington <cov@codeaurora.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* PCI/ACPI: Extend pci_mcfg_lookup() to return ECAM config accessorsTomasz Nowicki2016-12-063-16/+33
| | | | | | | | | | | | | | | | | pci_mcfg_lookup() is the external interface to the generic MCFG code. Previously it merely looked up the ECAM base address for a given domain and bus range. We want a way to add MCFG quirks, some of which may require special config accessors and adjustments to the ECAM address range. Extend pci_mcfg_lookup() so it can return a pointer to a pci_ecam_ops structure and a struct resource for the ECAM address space. For now, it always returns &pci_generic_ecam_ops (the standard accessor) and the resource described by the MCFG. No functional changes intended. [bhelgaas: changelog] Signed-off-by: Tomasz Nowicki <tn@semihalf.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* arm64: PCI: Exclude ACPI "consumer" resources from host bridge windowsBjorn Helgaas2016-12-061-0/+14
| | | | | | | | | | | | | | | | | | | On x86 and ia64, we have treated all ACPI _CRS resources of PNP0A03 host bridge devices as "producers", i.e., as host bridge windows. That's partly because some x86 BIOSes improperly used "consumer" descriptors to describe windows and partly because Linux didn't have good support for handling consumer and producer descriptors differently. One result is that x86 BIOSes describe host bridge "consumer" resources in the _CRS of a PNP0C02 device, not the PNP0A03 device itself. On arm64 we don't have a legacy of firmware that has this consumer/producer confusion, so we can handle PNP0A03 "consumer" descriptors as host bridge registers instead of windows. Exclude non-window ("consumer") resources from the list of host bridge windows. This allows the use of "consumer" PNP0A03 descriptors for bridge register space. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* arm64: PCI: Manage controller-specific data on per-controller basisTomasz Nowicki2016-12-061-7/+10
| | | | | | | | | | | | | | | | | | | | | Currently we use one shared global acpi_pci_root_ops structure to keep controller-specific ops. We pass its pointer to acpi_pci_root_create() and associate it with a host bridge instance for good. Such a design implies serious drawback. Any potential manipulation on the single system-wide acpi_pci_root_ops leads to kernel crash. The structure content is not really changing even across multiple host bridges creation; thus it was not an issue so far. In preparation for adding ECAM quirks mechanism (where controller-specific PCI ops may be different for each host bridge) allocate new acpi_pci_root_ops and fill in with data for each bridge. Now it is safe to have different controller-specific info. As a consequence free acpi_pci_root_ops when host bridge is released. No functional changes in this patch. Signed-off-by: Tomasz Nowicki <tn@semihalf.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
* arm64: PCI: Search ACPI namespace to ensure ECAM space is reservedBjorn Helgaas2016-12-061-1/+11
| | | | | | | | | | | | The static MCFG table tells us the base of ECAM space, but it does not reserve the space -- the reservation should be done via a device in the ACPI namespace whose _CRS includes the ECAM region. Use acpi_resource_consumer() to check whether the ECAM space is reserved by an ACPI namespace device. If it is, emit a message showing which device reserves it. If not, emit a "[Firmware Bug]" warning. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
* arm64: PCI: Add local struct device pointersBjorn Helgaas2016-12-061-6/+5
| | | | | | | Use a local "struct device *dev" for brevity. No functional change intended. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
* ACPI: Add acpi_resource_consumer() to find device that claims a resourceBjorn Helgaas2016-12-012-0/+64
| | | | | | | | | | | | | Add acpi_resource_consumer(). This takes a struct resource and searches the ACPI namespace for a device whose current resource settings (_CRS) includes the resource. It returns the device if it exists, or NULL if no device uses the resource. If more than one device uses the resource (this may happen in the case of bridges), acpi_resource_consumer() returns the first one found by acpi_get_devices() in its modified depth-first walk of the namespace. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* Linux 4.9-rc1v4.9-rc1Linus Torvalds2016-10-151-2/+2
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* Merge tag 'befs-v4.9-rc1' of git://github.com/luisbg/linux-befsLinus Torvalds2016-10-158-283/+244
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull befs fixes from Luis de Bethencourt: "I recently took maintainership of the befs file system [0]. This is the first time I send you a git pull request, so please let me know if all the below is OK. Salah Triki and myself have been cleaning the code and fixing a few small bugs. Sorry I couldn't send this sooner in the merge window, I was waiting to have my GPG key signed by kernel members at ELCE in Berlin a few days ago." [0] https://lkml.org/lkml/2016/7/27/502 * tag 'befs-v4.9-rc1' of git://github.com/luisbg/linux-befs: (39 commits) befs: befs: fix style issues in datastream.c befs: improve documentation in datastream.c befs: fix typos in datastream.c befs: fix typos in btree.c befs: fix style issues in super.c befs: fix comment style befs: add check for ag_shift in superblock befs: dump inode_size superblock information befs: remove unnecessary initialization befs: fix typo in befs_sb_info befs: add flags field to validate superblock state befs: fix typo in befs_find_key befs: remove unused BEFS_BT_PARMATCH fs: befs: remove ret variable fs: befs: remove in vain variable assignment fs: befs: remove unnecessary *befs_sb variable fs: befs: remove useless initialization to zero fs: befs: remove in vain variable assignment fs: befs: Insert NULL inode to dentry fs: befs: Remove useless calls to brelse in befs_find_brun_dblindirect ...
| * befs: befs: fix style issues in datastream.cLuis de Bethencourt2016-10-081-15/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixing the following checkpatch.pl errors: ERROR: "foo * bar" should be "foo *bar" + befs_blocknr_t blockno, befs_block_run * run); WARNING: Missing a blank line after declarations + struct buffer_head *bh; + befs_debug(sb, "---> %s length: %llu", __func__, len); WARNING: Block comments use * on subsequent lines + /* + Double indir block, plus all the indirect blocks it maps. (and other instances of these) Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Salah Triki <salah.triki@gmail.com>
| * befs: improve documentation in datastream.cLuis de Bethencourt2016-10-081-95/+98
| | | | | | | | | | | | | | Convert function descriptions to kernel-doc style. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Salah Triki <salah.triki@gmail.com>
| * befs: fix typos in datastream.cLuis de Bethencourt2016-10-081-4/+4
| | | | | | | | | | Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Salah Triki <salah.triki@gmail.com>
| * befs: fix typos in btree.cLuis de Bethencourt2016-10-081-4/+3
| | | | | | | | | | | | | | Fixing typos in kernel-doc function descriptions in fs/befs/btree.c. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Salah Triki <salah.triki@gmail.com>
| * befs: fix style issues in super.cLuis de Bethencourt2016-10-081-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixing the following checkpatch.pl error: ERROR: "foo * bar" should be "foo *bar" +befs_load_sb(struct super_block *sb, befs_super_block * disk_sb) And the following warnings: WARNING: suspect code indent for conditional statements (8, 12) + if (disk_sb->fs_byte_order == BEFS_BYTEORDER_NATIVE_LE) + befs_sb->byte_order = BEFS_BYTESEX_LE; WARNING: suspect code indent for conditional statements (8, 12) + else if (disk_sb->fs_byte_order == BEFS_BYTEORDER_NATIVE_BE) + befs_sb->byte_order = BEFS_BYTESEX_BE; WARNING: break quoted strings at a space character + befs_error(sb, "blocksize(%u) cannot be larger" + "than system pagesize(%lu)", befs_sb->block_size, WARNING: line over 80 characters + if (befs_sb->log_start != befs_sb->log_end || befs_sb->flags == BEFS_DIRTY) { Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Salah Triki <salah.triki@gmail.com>
| * befs: fix comment styleLuis de Bethencourt2016-10-081-7/+3
| | | | | | | | | | | | | | | | | | | | | | The description of befs_load_sb was confusing the kernel-doc system since, because it starts with /**, it thinks it will document the function with kernel-doc formatting. Which it isn't. Fix other comment style issues in the file while we are at it. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Salah Triki <salah.triki@gmail.com>
| * befs: add check for ag_shift in superblockLuis de Bethencourt2016-10-081-0/+7
| | | | | | | | | | | | | | | | | | | | | | ag_shift and blocks_per_ag contain the same information in different ways, same as block_shift and block_size do. It is worth checking this two are consistent, but since blocks_per_ag isn't documented as mandatory to use some implementations of befs don't enforce this, so making it non-fatal if they don't match and just having it as a warning. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Salah Triki <salah.triki@gmail.com>
| * befs: dump inode_size superblock informationLuis de Bethencourt2016-10-081-0/+1
| | | | | | | | | | | | | | | | | | befs_dump_super_block() wasn't giving the inode_size information when dumping all elements of the superblock. Add this element to have complete information of the superblock. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Salah Triki <salah.triki@gmail.com>
| * befs: remove unnecessary initializationSalah Triki2016-10-081-1/+1
| | | | | | | | | | | | | | | | There is no need to init block, since it will be overwitten later by iaddr2blockno(). Signed-off-by: Salah Triki <salah.triki@gmail.com> Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * befs: fix typo in befs_sb_infoSalah Triki2016-10-081-1/+1
| | | | | | | | | | | | | | Fixing jornal to Journal. Signed-off-by: Salah Triki <salah.triki@gmail.com> Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * befs: add flags field to validate superblock stateSalah Triki2016-10-082-1/+6
| | | | | | | | | | | | | | | | For validating superblock state, add flags field to befs_sb_info, read the state from the disk and check if it is equal to BEFS_DIRTY. Signed-off-by: Salah Triki <salah.triki@gmail.com> Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * befs: fix typo in befs_find_keyLuis de Bethencourt2016-10-081-1/+1
| | | | | | | | | | | | | | Fixing skeep to skip. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Salah Triki <salah.triki@gmail.com>
| * befs: remove unused BEFS_BT_PARMATCHLuis de Bethencourt2016-10-082-19/+16
| | | | | | | | | | | | | | | | | | | | befs_btree_find(), the only caller of befs_find_key(), only cares about if the return from that function is BEFS_BT_MATCH or not. It never uses the partial match given with BEFS_BT_PARMATCH. Make the overflow return clearer by having BEFS_BT_OVERFLOW instead of BEFS_BT_PARMATCH. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Salah Triki <salah.triki@gmail.com>
| * fs: befs: remove ret variableSalah Triki2016-10-081-2/+1
| | | | | | | | | | | | | | | | ret is initialized to -EIO and is never modified, so remove ret and use -EIO directly. Signed-off-by: Salah Triki <salah.triki@gmail.com> Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * fs: befs: remove in vain variable assignmentSalah Triki2016-10-081-1/+1
| | | | | | | | | | | | | | | | There is no need to init res, since it will be overwitten later by befs_fblock2brun(). Signed-off-by: Salah Triki <salah.triki@gmail.com> Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * fs: befs: remove unnecessary *befs_sb variableSalah Triki2016-10-081-2/+1
| | | | | | | | | | | | | | | | Remove *befs_sb and just call BEFS_SB(sb) directly, since the returned value by this function is only used once. Signed-off-by: Salah Triki <salah.triki@gmail.com> Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * fs: befs: remove useless initialization to zeroSalah Triki2016-10-081-1/+1
| | | | | | | | | | | | | | | | node_off is unconditionally set to bt_super.root_node_ptr, so no need to init it to zero. Signed-off-by: Salah Triki <salah.triki@gmail.com> Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * fs: befs: remove in vain variable assignmentSalah Triki2016-10-081-2/+0
| | | | | | | | | | | | | | There is no need to set *value, it will be overwritten later. Signed-off-by: Salah Triki <salah.triki@gmail.com> Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * fs: befs: Insert NULL inode to dentrySalah Triki2016-10-081-0/+1
| | | | | | | | | | | | | | | | As VFS expects, lookup inserts NULL inode to dentry when the named inode does not exist. Signed-off-by: Salah Triki <salah.triki@gmail.com> Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * fs: befs: Remove useless calls to brelse in befs_find_brun_dblindirectSalah Triki2016-10-081-2/+0
| | | | | | | | | | | | | | | | The calls to brelse are useless since dbl_indir_block and indir_block are NULL. Signed-off-by: Salah Triki <salah.triki@gmail.com> Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * fs: befs: Coding style fixSalah Triki2016-10-081-3/+3
| | | | | | | | | | | | | | Constant has to be capitalized. Signed-off-by: Salah Triki <salah.triki@gmail.com> Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * fs: befs: Remove redundant validation from befs_find_brun_directSalah Triki2016-10-081-8/+0
| | | | | | | | | | | | | | | | | | The only caller of befs_find_brun_direct is befs_fblock2brun, which already validates that the block is within the range of direct blocks. So remove the duplicate validation. Signed-off-by: Salah Triki <salah.triki@gmail.com> Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * befs: fix typo in befs_bt_read_node documentationLuis de Bethencourt2016-10-081-2/+2
| | | | | | | | | | | | Fixing a grammatical error in the documentation. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * befs: in memory free_node_ptr and max_size never readLuis de Bethencourt2016-10-081-2/+0
| | | | | | | | | | | | | | | | The only place the values of free_node_ptr and max_size are read is in befs_dump_index_entry(), which both times it is called, it is passed the on disk superblock. Removing assignment of unused values. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * befs: make consistent use of befs_error()Luis de Bethencourt2016-10-083-4/+9
| | | | | | | | | | | | | | | | | | | | | | | | befs_error() is used in potential errors that could happen in befs to provide informational log messages. befs_debug() is silent when CONFIG_BEFS_DEBUG=no, and very verbose when switched on, which is why it is used for general debugging but not for errors. Fix a few cases where the befs debug utility usage isn't following the expected pattern. To make sure we have consistent information in the logs. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * befs: use simpler while loopLuis de Bethencourt2016-10-081-36/+38
| | | | | | | | | | | | Replace goto with simpler while loop to make befs_readdir() more readable. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * befs: remove constant variableLuis de Bethencourt2016-10-081-5/+2
| | | | | | | | | | | | | | Use macro directly instead of via assigning it to an unchanging variable. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Acked-by: Salah Triki <salah.triki@gmail.com>
| * befs: avoid dereferencing dentry twiceLuis de Bethencourt2016-10-081-1/+1
| | | | | | | | | | | | | | No need to dereference dentry twice to get the name when we already have it stored in a local variable. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * fs: befs: remove comment that confuses kernel-docLuis de Bethencourt2016-10-081-4/+0
| | | | | | | | | | | | | | | | This comment with a mysterious unfinished line confuses the kernel-doc system since, because it starts with /**, it thinks it is documenting a function. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
| * fs: befs: check silent flag before logging errorLuis de Bethencourt2016-10-081-1/+2
| | | | | | | | | | | | | | | | Log error only when silent flag is not set. Fixes: dbe6460388bc ("fs/befs/linuxvfs.c: check silent flag before logging errors") Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Acked-by: Salah Triki <salah.triki@gmail.com>
| * fs: befs: replace befs_bread by sb_breadSalah Triki2016-10-084-30/+4
| | | | | | | | | | | | | | | | | | Since befs_bread merely calls sb_bread, replace it by sb_bread. Link: http://lkml.kernel.org/r/1466800258-4542-1-git-send-email-salah.triki@gmail.com Signed-off-by: Salah Triki <salah.triki@gmail.com> Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * befs: remove unused functionsLuis de Bethencourt2016-10-081-12/+0
| | | | | | | | | | | | | | | | befs_iaddr_is_empty() and befs_brun_size() are unused. Remove them. Link: http://lkml.kernel.org/r/1465700235-22881-3-git-send-email-luisbg@osg.samsung.com Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * befs: fix function name in documentationLuis de Bethencourt2016-10-081-1/+1
| | | | | | | | | | | | | | | | | | Documentation of function befs_load_cb() lists it as load_befs_sb(). Fix the misnomer. Link: http://lkml.kernel.org/r/1465700235-22881-2-git-send-email-luisbg@osg.samsung.com Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * befs: check return of sb_min_blocksizeLuis de Bethencourt2016-10-081-1/+6
| | | | | | | | | | | | | | | | Confirm sb_min_blocksize() succeeded before continuing. Link: http://lkml.kernel.org/r/1465700235-22881-1-git-send-email-luisbg@osg.samsung.com Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * fs: befs: remove useless pr_err in befs_init_inodecache()Salah Triki2016-10-081-4/+2
| | | | | | | | | | | | | | Remove pr_err since kmem_cache_create log error and dump stack. Link: http://lkml.kernel.org/r/e6d03cbc9542495dc6174b59e32fcd41c1393cfc.1464226521.git.salah.triki@acm.org Signed-off-by: Salah Triki <salah.triki@acm.org>
| * fs/befs/linuxvfs.c: remove useless befs_errorSalah Triki2016-10-081-2/+0
| | | | | | | | | | | | | | | | | | Remove befs_error since when kmalloc fails there is a generic out of memory and stack dump. Link: http://lkml.kernel.org/r/3de4d388d98bbb570462a5eb8e64623e17fb5d74.1464226521.git.salah.triki@acm.org Signed-off-by: Salah Triki <salah.triki@acm.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * fs/befs/linuxvfs.c: remove useless pr_err in befs_fill_super()Salah Triki2016-10-081-4/+2
| | | | | | | | | | | | | | | | | | Remove pr_err since when kzalloc fails there is a generic out of memory and stack dump. Link: http://lkml.kernel.org/r/c5a7f2d42ec0fc8465c118248e88cd221c483391.1464226521.git.salah.triki@acm.org Signed-off-by: Salah Triki <salah.triki@acm.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * fs/befs/linuxvfs.c: check silent flag before logging errorsSalah Triki2016-10-081-6/+9
| | | | | | | | | | | | | | | | Log errors only when silent flag is not set. Link: http://lkml.kernel.org/r/d400aaf5a7430de79bd956e40ec075fb1cb08474.1464226521.git.salah.triki@acm.org Signed-off-by: Salah Triki <salah.triki@acm.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * fs/befs/linuxvfs.c: move useless assignmentSalah Triki2016-10-081-1/+1
| | | | | | | | | | | | | | | | | | | | Control is transfered to unacquire_none when sb->s_fs_info is equal to NULL, so the assignment to NULL is useless and it is moved above unacquire_none. Link: http://lkml.kernel.org/r/ed41da113fc693c7daa4e8813ca04cc766ddfc05.1464226521.git.salah.triki@acm.org Signed-off-by: Salah Triki <salah.triki@acm.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
* | Merge tag 'gcc-plugins-v4.9-rc1' of ↵Linus Torvalds2016-10-1524-22/+725
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull gcc plugins update from Kees Cook: "This adds a new gcc plugin named "latent_entropy". It is designed to extract as much possible uncertainty from a running system at boot time as possible, hoping to capitalize on any possible variation in CPU operation (due to runtime data differences, hardware differences, SMP ordering, thermal timing variation, cache behavior, etc). At the very least, this plugin is a much more comprehensive example for how to manipulate kernel code using the gcc plugin internals" * tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: latent_entropy: Mark functions with __latent_entropy gcc-plugins: Add latent_entropy plugin
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