#
08273c9f |
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09-Feb-2023 |
Nathan Lynch <nathanl@linux.ibm.com> |
powerpc/rtas: arch-wide function token lookup conversions With the tokens for all implemented RTAS functions now available via rtas_function_token(), which is optimal and safe for arbitrary contexts, there is no need to use rtas_token() or cache its result. Most conversions are trivial, but a few are worth describing in more detail: * Error injection token comparisons for lockdown purposes are consolidated into a simple predicate: token_is_restricted_errinjct(). * A couple of special cases in block_rtas_call() do not use rtas_token() but perform string comparisons against names in the function table. These are converted to compare against token values instead, which is logically equivalent but less expensive. * The lookup for the ibm,os-term token can be deferred until needed, instead of caching it at boot to avoid device tree traversal during panic. * Since rtas_function_token() accesses a read-only data structure without taking any locks, xmon's lookup of set-indicator can be performed as needed instead of cached at startup. Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20230125-b4-powerpc-rtas-queue-v3-20-26929c8cce78@linux.ibm.com
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#
e6f6390a |
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08-Mar-2022 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc: Add missing headers Don't inherit headers "by chances" from asm/prom.h, asm/mpc52xx.h, asm/pci.h etc... Include the needed headers, and remove asm/prom.h when it was needed exclusively for pulling necessary headers. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/be8bdc934d152a7d8ee8d1a840d5596e2f7d85e0.1646767214.git.christophe.leroy@csgroup.eu
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#
2874c5fd |
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27-May-2019 |
Thomas Gleixner <tglx@linutronix.de> |
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
20e07af7 |
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14-Jan-2019 |
Finn Thain <fthain@telegraphics.com.au> |
powerpc: Adopt nvram module for PPC64 Adopt nvram module to reduce code duplication. This means CONFIG_NVRAM becomes available to PPC64 builds. Previously it was only available to PPC32 builds because it depended on CONFIG_GENERIC_NVRAM. The IOC_NVRAM_GET_OFFSET ioctl as implemented on PPC64 validates the offset returned by pmac_get_partition(). Do the same in the nvram module. Note that the old PPC32 generic_nvram module lacked this test. So when CONFIG_PPC32 && CONFIG_PPC_PMAC, the IOC_NVRAM_GET_OFFSET ioctl would have returned 0 (always). But when CONFIG_PPC64 && CONFIG_PPC_PMAC, the IOC_NVRAM_GET_OFFSET ioctl would have returned -1 (which is -EPERM) when the requested partition was not found. With this patch, the result is now -EINVAL on both PPC32 and PPC64 when the requested PowerMac NVRAM partition is not found. This is a userspace- visible change, in the non-existent partition case, which would be in an error path for an IOC_NVRAM_GET_OFFSET ioctl syscall. Tested-by: Stan Johnson <userm57@yahoo.com> Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
7c0f6ba6 |
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24-Dec-2016 |
Linus Torvalds <torvalds@linux-foundation.org> |
Replace <asm/uaccess.h> with <linux/uaccess.h> globally This was entirely automated, using the script by Al: PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>' sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \ $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h) to do the replacement at the end of the merge window. Requested-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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#
1e61423f |
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08-Jun-2016 |
Geliang Tang <geliangtang@gmail.com> |
powerpc/pseries: Remove unused pstore headers in nvram.c Since the pstore code has moved away from nvram.c, remove unused pstore headers pstore.h and kmsg_dump.h. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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#
e4a9616c |
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05-Feb-2015 |
Hari Bathini <hbathini@linux.vnet.ibm.com> |
powerpc/rtas: Make timestamp related code y2038-safe While we are here, let us make timestamp related code y2038-safe. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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#
78989f0a |
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05-Feb-2015 |
Hari Bathini <hbathini@linux.vnet.ibm.com> |
powerpc/nvram: Move generic code for nvram and pstore With minor checks, we can move most of the code for nvram under pseries to a common place to be re-used by other powerpc platforms like powernv. This patch moves such common code to arch/powerpc/kernel/nvram_64.c file. Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com> [mpe: Move select of ZLIB_DEFLATE to PPC64 to fix the build] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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#
a49ab6ee |
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16-Nov-2014 |
Li Zhong <zhong@linux.vnet.ibm.com> |
powerpc/pseries: Initialise nvram_pstore_info's buf_lock nvram_pstore_info's buf_lock is not initialized before registering, which is clearly incorrect. It causes some strange behavior when trying to obtain the lock during kdump process. On a UP configuration, the console stopped for a couple of seconds, then "lockup suspected" warning printed out, but then it continued to run. So try lock fails, and lockup reported, but then arch_spin_lock() passes. Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com> [mpe: Edited changelog] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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#
e51df2c1 |
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19-Aug-2014 |
Anton Blanchard <anton@samba.org> |
powerpc: Make a bunch of things static Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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#
aba6f4f2 |
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25-Mar-2014 |
Joe Perches <joe@perches.com> |
powerpc: Convert last uses of __FUNCTION__ to __func__ Just about all of these have been converted to __func__, so convert the last uses. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
9fa2984d |
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11-Dec-2013 |
Anton Blanchard <anton@samba.org> |
powerpc/pseries: Fix endian issues in nvram code The NVRAM code has a number of endian issues. I noticed a very confused error log count: RTAS: 100663330 -------- RTAS event begin -------- 100663330 == 0x06000022. 0x6 LE error logs and 0x22 BE error logs. The pstore code has similar issues - if we write an oops in one endian and attempt to read it in another we get junk. Make both of these formats big endian, and byteswap as required. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
563c5d8a |
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30-Oct-2013 |
Cedric Le Goater <clg@fr.ibm.com> |
powerpc/nvram: Fix endian issue when reading the NVRAM size Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
65f36f41 |
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30-Oct-2013 |
Cedric Le Goater <clg@fr.ibm.com> |
powerpc/nvram: Scan partitions only once nvram_scan_partitions() is called twice when initializing the "lnx,oops-log" partition and the "ibm,rtas-log" partition. This fills the partition list with duplicate entries. This patch moves the partition scan in the init routine pseries_nvram_init_log_partitions() which is called only once. Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
aa5e5dc2 |
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17-Sep-2013 |
Michael Opdenacker <michael.opdenacker@free-electrons.com> |
treewide: fix "distingush" typo Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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#
40594264 |
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16-Aug-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
powerpc/pseries: Read and write to the 'compressed' flag of pstore If data returned from pstore is compressed, nvram's write callback will add a flag ERR_TYPE_KERNEL_PANIC_GZ indicating the data is compressed while writing to nvram. If the data read from nvram is compressed, nvram's read callback will set the flag 'compressed'. The patch adds backward compatibilty with old format oops header when reading from pstore. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
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#
9a4e1398 |
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16-Aug-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
pstore: Introduce new argument 'compressed' in the read callback Backends will set the flag 'compressed' after reading the log from persistent store to indicate the data being returned to pstore is compressed or not. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
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#
b3b515bb |
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16-Aug-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
pstore: Add new argument 'compressed' in pstore write callback Addition of new argument 'compressed' in the write call back will help the backend to know if the data passed from pstore is compressed or not (In case where compression fails.). If compressed, the backend can add a tag indicating the data is compressed while writing to persistent store. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
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#
a3a5e941 |
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16-Aug-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
powerpc/pseries: Remove (de)compression in nvram with pstore enabled (De)compression support is provided in pstore in subsequent patches which needs an additional argument 'compressed' to determine if the data is compressed or not. This patch will take care of removing (de)compression in nvram with pstore which was making use of 'hsize' argument in pstore write as 'hsize' will be removed in the subsequent patch. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
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#
156c9ebd |
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08-Aug-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
powerpc/pseries: Add backward compatibilty to read old kernel oops-log Older kernels has just length information in their header. Handle it while reading old kernel oops log from pstore. Applies on top of powerpc/pseries: Fix buffer overflow when reading from pstore Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
7e76f34f |
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08-Aug-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
powerpc/pseries: Fix buffer overflow when reading from pstore When reading from pstore there is a buffer overflow during decompression due to the header added in unzip_oops. Remove unzip_oops and call pstore_decompress directly in nvram_pstore_read. Allocate buffer of size report_length of the oops header as header will not be deallocated in pstore. Since we have 'openssl' command line tool to decompress the compressed data, dump the compressed data in case decompression fails instead of not dumping anything. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
40847e56 |
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27-Jun-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
powerpc/pseries: Support compression of oops text via pstore The patch set supports compression of oops messages while writing to NVRAM, this helps in capturing more of oops data to lnx,oops-log. The pstore file for oops messages will be in decompressed format making it readable. In case compression fails, the patch takes care of copying the header added by pstore and last oops_data_sz bytes of big_oops_buf to NVRAM so that we have recent oops messages in lnx,oops-log. In case decompression fails, it will result in absence of oops file but still have files (in /dev/pstore) for other partitions. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
fbfe86fc |
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27-Jun-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
powerpc/pseries: Re-organise the oops compression code nvram_compress() and zip_oops() is used by the nvram_pstore_write API to compress oops messages hence re-organise the functions accordingly to avoid forward declarations. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
6bbbca73 |
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27-Jun-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
pstore: Pass header size in the pstore write callback Header size is needed to distinguish between header and the dump data. Incorporate the addition of new argument (hsize) in the pstore write callback. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
a5e4797b |
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05-Jun-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
powerpc/pseries: Read common partition via pstore This patch exploits pstore subsystem to read details of common partition in NVRAM to a separate file in /dev/pstore. For instance, common partition details will be stored in a file named [common-nvram-6]. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
f33f748c |
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05-Jun-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
powerpc/pseries: Read of-config partition via pstore This patch set exploits the pstore subsystem to read details of of-config partition in NVRAM to a separate file in /dev/pstore. For instance, of-config partition details will be stored in a file named [of-nvram-5]. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
edf38465 |
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05-Jun-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
powerpc/pseries: Distinguish between a os-partition and non-os partition Introduce os_partition member in nvram_os_partition structure to identify if the partition is an os partition or not. This will be useful to handle non-os partitions of-config and common. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
69020eea |
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05-Jun-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
powerpc/pseries: Read rtas partition via pstore This patch set exploits the pstore subsystem to read details of rtas partition in NVRAM to a separate file in /dev/pstore. For instance, rtas details will be stored in a file named [rtas-nvram-4]. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
d7563c94 |
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05-Jun-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
powerpc/pseries: Read/Write oops nvram partition via pstore IBM's p series machines provide persistent storage for LPARs through NVRAM. NVRAM's lnx,oops-log partition is used to log oops messages. Currently the kernel provides the contents of p-series NVRAM only as a simple stream of bytes via /dev/nvram, which must be interpreted in user space by the nvram command in the powerpc-utils package. This patch set exploits the pstore subsystem to expose oops partition in NVRAM as a separate file in /dev/pstore. For instance, Oops messages will be stored in a file named [dmesg-nvram-2]. In case pstore registration fails it will fall back to kmsg_dump mechanism. This patch will read/write the oops messages from/to this partition via pstore. Signed-off-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
12674610 |
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05-Jun-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
powerpc/pseries: Introduce generic read function to read nvram-partitions Introduce generic read function to read nvram partitions other than rtas. nvram_read_error_log will be retained which is used to read rtas partition from rtasd. nvram_read_partition is the generic read function to read from any nvram partition. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
b1f70e1f |
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05-Jun-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
powerpc/pseries: Add version and timestamp to oops header Introduce version and timestamp information in the oops header. oops_log_info (oops header) holds version (to distinguish between old and new format oops header), length of the oops text (compressed or uncompressed) and timestamp. The version field will sit in the same place as the length in old headers. version is assigned 5000 (greater than oops partition size) so that existing tools will refuse to dump new style partitions as the length is too large. The updated tools will work with both old and new format headers. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
1bf247f8 |
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05-Jun-2013 |
Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> |
powerpc/pseries: Remove syslog prefix in uncompressed oops text Removal of syslog prefix in the uncompressed oops text will help in capturing more oops data. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
e2ae715d |
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15-Jun-2012 |
Kay Sievers <kay@vrfy.org> |
kmsg - kmsg_dump() use iterator to receive log buffer content Provide an iterator to receive the log buffer content, and convert all kmsg_dump() users to it. The structured data in the kmsg buffer now contains binary data, which should no longer be copied verbatim to the kmsg_dump() users. The iterator should provide reliable access to the buffer data, and also supports proper log line-aware chunking of data while iterating. Signed-off-by: Kay Sievers <kay@vrfy.org> Tested-by: Tony Luck <tony.luck@intel.com> Reported-by: Anton Vorontsov <anton.vorontsov@linaro.org> Tested-by: Anton Vorontsov <anton.vorontsov@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
a3dd3323 |
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12-Jan-2012 |
WANG Cong <xiyou.wangcong@gmail.com> |
kexec: remove KMSG_DUMP_KEXEC KMSG_DUMP_KEXEC is useless because we already save kernel messages inside /proc/vmcore, and it is unsafe to allow modules to do other stuffs in a crash dump scenario. [akpm@linux-foundation.org: fix powerpc build] Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Reported-by: Vivek Goyal <vgoyal@redhat.com> Acked-by: Vivek Goyal <vgoyal@redhat.com> Acked-by: Jarod Wilson <jarod@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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#
120a52c3 |
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30-Nov-2011 |
Anton Blanchard <anton@samba.org> |
powerpc/nvram: Add spinlock to oops_to_nvram to prevent oops in compression code. When issuing a system reset we almost always oops in the oops_to_nvram code because multiple CPUs are using the deflate work area. Add a spinlock to protect it. To play it safe I'm using trylock to avoid locking up if the NVRAM code oopses. This means we might miss multiple CPUs oopsing at exactly the same time but I think it's best to play it safe for now. Once we are happy with the reliability we can change it to a full spinlock. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
6c493685 |
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25-Jul-2011 |
Jim Keniston <jkenisto@us.ibm.com> |
powerpc/nvram: Add compression to fit more oops output into NVRAM Capture more than twice as much text from the printk buffer, and compress it to fit it in the lnx,oops-log NVRAM partition. You can view the compressed text using the new (as of July 20) --unzip option of the nvram command in the powerpc-utils package. [BenH: Added select of ZLIB_DEFLATE] Signed-off-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
15d260b3 |
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24-Mar-2011 |
Jim Keniston <jkenisto@us.ibm.com> |
powerpc/nvram: Don't overwrite oops/panic report on normal shutdown For normal halt, reboot, and poweroff events, refrain from overwriting the lnx,oops-log partition. Also, don't save the dmesg buffer on an emergency-restart event if we've already saved it earlier in panic(). Signed-off-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
a5cf4b08 |
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09-Feb-2011 |
Jim Keniston <jkenisto@linux.vnet.ibm.com> |
powerpc/pseries/nvram: Capture oops/panic reports in ibm, oops-log partition Create the lnx,oops-log NVRAM partition, and capture the end of the printk buffer in it when there's an oops or panic. If we can't create the lnx,oops-log partition, capture the oops/panic report in ibm,rtas-log. Signed-off-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
0f4ac132 |
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08-Feb-2011 |
Jim Keniston <jkenisto@linux.vnet.ibm.com> |
powerpc/nvram: Generalize code for OS partitions in NVRAM Adapt the functions used to create and write to the RTAS-log partition to work with any OS-type partition. Signed-off-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
9a866b87 |
|
01-Aug-2010 |
Benjamin Herrenschmidt <benh@kernel.crashing.org> |
powerpc/nvram: Rename ppc64,linux partition to ibm,rtas-log I'm not aware of any userspace tool accessing it by its name anyways, it's read back by the kernel itself on the next boot to get back older log entries Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
edc79a2f |
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01-Aug-2010 |
Benjamin Herrenschmidt <benh@kernel.crashing.org> |
powerpc/nvram: Move the log partition stuff to pseries The nvram log partition stuff currently in nvram_64.c is really pseries specific. It isn't actually used on anything else (despite the fact that we ran the code to setup the partition on anything except powermac) and the log format is specific to pseries RTAS implementation. So move it where it belongs Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
4e7c77a3 |
|
28-Jul-2010 |
Benjamin Herrenschmidt <benh@kernel.crashing.org> |
powerpc/nvram: More flexible nvram_create_partition() Replace nvram_create_os_partition() with a variant that takes the partition name, signature and size as arguments. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
74d51d02 |
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28-Jul-2010 |
Benjamin Herrenschmidt <benh@kernel.crashing.org> |
powerpc/nvram: Move things out of asm/nvram.h This moves a bunch of definitions out of asm/nvram.h to the files that use them or just outright remove completely unused stuff. We leave the partition signatures definitions, they will be useful Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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5a0e3ad6 |
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24-Mar-2010 |
Tejun Heo <tj@kernel.org> |
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
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bad5232b |
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09-Jun-2008 |
Julia Lawall <julia@diku.dk> |
[POWERPC] Add missing of_node_put in pseries/nvram.c of_node_put is needed before discarding a value received from of_find_node_by_type, eg in error handling code. The semantic patch that makes the change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ struct device_node *n; struct device_node *n1; struct device_node *n2; statement S; identifier f1,f2; expression E1,E2; constant C; @@ n = of_find_node_by_type(...) ... if (!n) S ... when != of_node_put(n) when != n1 = f1(n,...) when != E1 = n when any when strict ( + of_node_put(n); return -C; | of_node_put(n); | n2 = f2(n,...) | E2 = n | return ...; ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
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e2eb6392 |
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03-Apr-2007 |
Stephen Rothwell <sfr@canb.auug.org.au> |
[POWERPC] Rename get_property to of_get_property: arch/powerpc Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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954a46e2 |
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11-Jul-2006 |
Jeremy Kerr <jk@ozlabs.org> |
[POWERPC] pseries: Constify & voidify get_property() Now that get_property() returns a void *, there's no need to cast its return value. Also, treat the return value as const, so we can constify get_property later. pseries platform changes. Built for pseries_defconfig Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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69a80d3f |
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10-Oct-2005 |
Paul Mackerras <paulus@samba.org> |
powerpc: move pSeries files to arch/powerpc/platforms/pseries Signed-off-by: Paul Mackerras <paulus@samba.org>
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