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* fs/reiserfs: return f_fsid for statfs(2)Coly Li2009-04-022-0/+6
| | | | | | | | | | | | | | | | | | | Make reiserfs3 return f_fsid info for statfs(2). By Andreas' suggestion, this patch populates a persistent f_fsid between boots/mounts with help of on-disk uuid record. Randy Dunlap reported a compiling error from v2 patch like: fs/built-in.o: In function `reiserfs_statfs': super.c:(.text+0x7332b): undefined reference to `crc32_le' super.c:(.text+0x7333f): undefined reference to `crc32_le' Also he provided helpful solution to fix this error. The modification of v3 patch is based on Randy's suggestion, add 'select CRC32' in fs/reiserfs/Kconfig. Signed-off-by: Coly Li <coly.li@suse.de> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/qnx4: return f_fsid for statfs(2)Coly Li2009-04-021-0/+3
| | | | | | | | | Make qnx4 file system return f_fsid info for statfs(2). Signed-off-by: Coly Li <coly.li@suse.de> Acked-by: Anders Larsen <al@alarsen.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/omfs: return f_fsid for statfs(2)Coly Li2009-04-021-0/+5
| | | | | | | | | Make omfs return f_fsid info for statfs(2). Signed-off-by: Coly Li <coly.li@suse.de> Acked-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/minix: return f_fsid for statfs(2)Coly Li2009-04-021-3/+8
| | | | | | | | Make minix file system return f_fsid info for statfs(2). Signed-off-by: Coly Li <coly.li@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/isofs: return f_fsid for statfs(2)Coly Li2009-04-021-0/+3
| | | | | | | | | Make isofs return f_fsid info for statfs(2). Signed-off-by: Coly Li <coly.li@suse.de> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/hpfs: return f_fsid for statfs(2)Coly Li2009-04-021-0/+3
| | | | | | | | | Make hpfs return f_fsid info for statfs(2). Signed-off-by: Coly Li <coly.li@suse.de> Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/hfsplus: return f_fsid for statfs(2)Coly Li2009-04-021-0/+3
| | | | | | | | | Make hfsplus return f_fsid info for statfs(2). Signed-off-by: Coly Li <coly.li@suse.de> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/hfs: return f_fsid for statfs(2)Coly Li2009-04-021-0/+3
| | | | | | | | | Make hfs return f_fsid info for statfs(2). Signed-off-by: Coly Li <coly.li@suse.de> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/fat: return f_fsid for statfs(2)Coly Li2009-04-021-1/+5
| | | | | | | | | Make fat return f_fsid info for statfs(2). Signed-off-by: Coly Li <coly.li@suse.de> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/efs: return f_fsid for statfs(2)Coly Li2009-04-021-8/+12
| | | | | | | | | Make efs return f_fsid info for statfs(2), and do a little variable renaming in efs_statfs(). Signed-off-by: Coly Li <coly.li@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/cramfs: return f_fsid for statfs(2)Coly Li2009-04-021-0/+3
| | | | | | | | Make cramfs return f_fsid info for statfs(2). Signed-off-by: Coly Li <coly.li@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/befs: return f_fsid for statfs(2)Coly Li2009-04-021-0/+3
| | | | | | | | | Make befs return f_fsid info for statfs(2). Signed-off-by: Coly Li <coly.li@suse.de> Cc: Sergey S. Kostyliov <rathamahata@php4.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/affs: return f_fsid for statfs(2)Coly Li2009-04-021-0/+4
| | | | | | | | | Make affs return f_fsid info for statfs(2). Signed-off-by: Coly Li <coly.li@suse.de> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/adfs: return f_fsid for statfs(2)Coly Li2009-04-021-6/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently many file systems in Linux kernel do not return f_fsid in statfs info, the value is set as 0 in vfs layer. Anyway, in some conditions, f_fsid from statfs(2) is useful, especially being used as (f_fsid, ino) pair to uniquely identify a file. Basic idea of the patches is generating a unique fs ID by huge_encode_dev(sb->s_bdev->bd_dev) during file system mounting life time (no endian consistent issue). sb is a point of struct super_block of current mounted file system being accessed by statfs(2). This patch: Make adfs return f_fsid info for statfs(2), and do a little variable renaming in adfs_statfs(). Signed-off-by: Coly Li <coly.li@suse.de> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: "Sergey S. Kostyliov" <rathamahata@php4.ru> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Cc: Bob Copeland <me@bobcopeland.com> Cc: Anders Larsen <al@alarsen.net> Cc: Phillip Lougher <phillip@lougher.demon.co.uk> Cc: Christoph Hellwig <hch@infradead.org> Cc: Evgeniy Dushistov <dushistov@mail.ru> Cc: Jan Kara <jack@suse.cz> Cc: Andreas Dilger <adilger@sun.com> Cc: Jamie Lokier <jamie@shareable.org> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* preadv/pwritev: switch compat readv/preadv/writev/pwritev from fget to ↵Gerd Hoffmann2009-04-021-8/+12
| | | | | | | | | | | | | fget_light Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <linux-api@vger.kernel.org> Cc: <linux-arch@vger.kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* preadv/pwritev: MIPS: Add preadv(2) and pwritev(2) syscalls.Ralf Baechle2009-04-025-6/+20
| | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <linux-api@vger.kernel.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* preadv/pwritev: Add preadv and pwritev system calls.Gerd Hoffmann2009-04-028-0/+106
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds preadv and pwritev system calls. These syscalls are a pretty straightforward combination of pread and readv (same for write). They are quite useful for doing vectored I/O in threaded applications. Using lseek+readv instead opens race windows you'll have to plug with locking. Other systems have such system calls too, for example NetBSD, check here: http://www.daemon-systems.org/man/preadv.2.html The application-visible interface provided by glibc should look like this to be compatible to the existing implementations in the *BSD family: ssize_t preadv(int d, const struct iovec *iov, int iovcnt, off_t offset); ssize_t pwritev(int d, const struct iovec *iov, int iovcnt, off_t offset); This prototype has one problem though: On 32bit archs is the (64bit) offset argument unaligned, which the syscall ABI of several archs doesn't allow to do. At least s390 needs a wrapper in glibc to handle this. As we'll need a wrappers in glibc anyway I've decided to push problem to glibc entriely and use a syscall prototype which works without arch-specific wrappers inside the kernel: The offset argument is explicitly splitted into two 32bit values. The patch sports the actual system call implementation and the windup in the x86 system call tables. Other archs follow as separate patches. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <linux-api@vger.kernel.org> Cc: <linux-arch@vger.kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* preadv/pwritev: create compat_writev()Gerd Hoffmann2009-04-021-7/+18
| | | | | | | | | | | | | | Factor out some code from compat_sys_writev() which can be shared with the upcoming compat_sys_pwritev(). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <linux-api@vger.kernel.org> Cc: <linux-arch@vger.kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* preadv/pwritev: create compat_readv()Gerd Hoffmann2009-04-021-8/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch series: Implement the preadv() and pwritev() syscalls. *BSD has this syscall for quite some time. Test code: #if 0 set -x gcc -Wall -O2 -o preadv $0 exit 0 #endif /* * preadv demo / test * * (c) 2008 Gerd Hoffmann <kraxel@redhat.com> * * build with "sh $thisfile" */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <errno.h> #include <inttypes.h> #include <sys/uio.h> /* ----------------------------------------------------------------- */ /* syscall windup */ #include <sys/syscall.h> #if 0 /* WARNING: Be sure you know what you are doing if you enable this. * linux syscall code isn't upstream yet, syscall numbers are subject * to change */ # ifndef __NR_preadv # ifdef __i386__ # define __NR_preadv 333 # define __NR_pwritev 334 # endif # ifdef __x86_64__ # define __NR_preadv 295 # define __NR_pwritev 296 # endif # endif #endif #ifndef __NR_preadv # error preadv/pwritev syscall numbers are unknown #endif static ssize_t preadv(int fd, const struct iovec *iov, int iovcnt, off_t offset) { uint32_t pos_high = (offset >> 32) & 0xffffffff; uint32_t pos_low = offset & 0xffffffff; return syscall(__NR_preadv, fd, iov, iovcnt, pos_high, pos_low); } static ssize_t pwritev(int fd, const struct iovec *iov, int iovcnt, off_t offset) { uint32_t pos_high = (offset >> 32) & 0xffffffff; uint32_t pos_low = offset & 0xffffffff; return syscall(__NR_pwritev, fd, iov, iovcnt, pos_high, pos_low); } /* ----------------------------------------------------------------- */ /* demo/test app */ static char filename[] = "/tmp/preadv-XXXXXX"; static char outbuf[11] = "0123456789"; static char inbuf[11] = "----------"; static struct iovec ovec[2] = {{ .iov_base = outbuf + 5, .iov_len = 5, },{ .iov_base = outbuf + 0, .iov_len = 5, }}; static struct iovec ivec[3] = {{ .iov_base = inbuf + 6, .iov_len = 2, },{ .iov_base = inbuf + 4, .iov_len = 2, },{ .iov_base = inbuf + 2, .iov_len = 2, }}; void cleanup(void) { unlink(filename); } int main(int argc, char **argv) { int fd, rc; fd = mkstemp(filename); if (-1 == fd) { perror("mkstemp"); exit(1); } atexit(cleanup); /* write to file: "56789-01234" */ rc = pwritev(fd, ovec, 2, 0); if (rc < 0) { perror("pwritev"); exit(1); } /* read from file: "78-90-12" */ rc = preadv(fd, ivec, 3, 2); if (rc < 0) { perror("preadv"); exit(1); } printf("result : %s\n", inbuf); printf("expected: %s\n", "--129078--"); exit(0); } This patch: Factor out some code from compat_sys_readv() which can be shared with the upcoming compat_sys_preadv(). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <linux-api@vger.kernel.org> Cc: <linux-arch@vger.kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cramfs: propagate uncompression errorsDavid VomLehn2009-04-022-11/+27
| | | | | | | | | | Decompression errors can arise due to corruption of compressed blocks on flash or in memory. This patch propagates errors detected during decompression back to the block layer. Signed-off-by: David VomLehn <dvomlehn@cisco.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* xpc_sn2: fix max() warning about pointers of different typesRobin Holt2009-04-021-5/+5
| | | | | | | | | | | | Fix a minor compile warning when building on ia64. drivers/misc/sgi-xp/xpc_sn2.c: In function `xpc_clear_remote_msgqueue_flags_sn2': drivers/misc/sgi-xp/xpc_sn2.c:1746: warning: comparison of distinct pointer types lacks a cast Signed-off-by: Robin Holt <holt@sgi.com> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: remove SGI_GRU as a valid config option for ia64 configs with SGI_UVRobin Holt2009-04-022-5/+2
| | | | | | | | | | | | Some current configs turn on GRU for ia64. The GRU code does not correctly load on boot on ia64 (GRU does continue to work for x86-64), so changing the IA64 Kconfig to not select GRU on ia64 configs for now until we have time to fix. Signed-off-by: Robin Holt <holt@sgi.com> Acked-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: support multiple pagesizes in GRUJack Steiner2009-04-026-38/+35
| | | | | | | | Add multiple pagesize support to the GRU driver. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: fix bugs related to module unload of the GRU driverJack Steiner2009-04-023-1/+24
| | | | | | | | Fix bugs related to module unload of the GRU driver. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: macro for scanning all gru chipletsJack Steiner2009-04-024-13/+14
| | | | | | | | | Add macro for scanning all active GRU chiplets. Maximum chiplet id is saved during GRU initialization. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: add support to the GRU driver for message queue interruptsJack Steiner2009-04-027-118/+305
| | | | | | | | | Add support to the GRU driver for message queue interrupts. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: restructure the GRU vtop functionsJack Steiner2009-04-021-24/+44
| | | | | | | | | Restructure the GRU vtop functions in preparation for future changes. This patch simply moves code around & does not change the algorithm. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: aSID (context management) bug fixesJack Steiner2009-04-022-4/+10
| | | | | | | | | | This patch fixes bugs related to ASID (context id) management in the GRU driver. These changes are all internal to the SGI GRU driver and have no effect on the base kernel. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: add support for a user to explicitly unload a GRU contextJack Steiner2009-04-021-0/+36
| | | | | | | | Add support for a user to explicitly unload a GRU context. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: add statistics to the GRU context management functionsJack Steiner2009-04-023-0/+59
| | | | | | | | Add statistics to the GRU context management functions. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: change GRU CCH commands from inline functions to outofline functionsJack Steiner2009-04-024-160/+218
| | | | | | | | | | Change the GRU instructions that manage contexts from inline functions to out-of-line functions. This simplifies adding statistics & error checking to these functions. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: improvements to GRU debug messages & statisticsJack Steiner2009-04-027-27/+38
| | | | | | | | Improvements to GRU debug messages & statistics. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: misc GRU cleanupJack Steiner2009-04-028-43/+55
| | | | | | | | | | | | | | | | Misc trivial GRU drivers fixes: - fix long lines - eliminate extra whitespace - eliminate compiler warning - better validation of invalidate user parameters - bug fix for GRU TLB flush (not the cpu TLB flush) These changes are all internal to the SGI GRU driver and have no effect on the base kernel. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: add macros for using the UV hub to send interruptsJack Steiner2009-04-023-7/+20
| | | | | | | | | | | | | | Add macros for using the UV hub to send interrupts. Change the IPI code to use these macros. These macros will also be used in additional patches that will follow. Signed-off-by: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: add definitions of ia64 GRU MMRsJack Steiner2009-04-021-3/+155
| | | | | | | | | Add definitions for IA64 GRU MMRs. Signed-off-by: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: add definitions of x86_64 GRU MMRsJack Steiner2009-04-021-0/+153
| | | | | | | | | | | Add definitions for x86_64 GRU MMRs. Signed-off-by: Jack Steiner <steiner@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sgi-gru: exclude UV definitions on 32-bit x86Jack Steiner2009-04-021-0/+2
| | | | | | | | | | | Eliminate compile errors on 32-bit X86 caused by UV. Signed-off-by: Jack Steiner <steiner@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* relay: fix for possible loss/corruption of produced subbufsAravind Srinivasan2009-04-021-3/+5
| | | | | | | | | | | | | | | | | | | Fix possible loss/corruption of produced subbufs in relay_subbufs_consumed(). When buf->subbufs_produced wraps around after UINT_MAX and buf->subbufs_consumed is still < UINT_MAX, the condition if (buf->subbufs_consumed > buf->subbufs_produced) will be true even for certain valid values of subbufs_consumed. This may lead to loss or corruption of produced subbufs. Signed-off-by: Aravind Srinivasan <raa.aars@gmail.com> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Tom Zanussi <zanussi@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kexec: vmcoreinfo_data[] can become staticDmitri Vorobiev2009-04-021-1/+1
| | | | | | | | | | | | | The vmcoreinfo_data[] array is not used outside of kernel/kexec.c, and can therefore become static. This patch adds the relevant keyword to the definition of the array. Noticed by sparse. Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@movial.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kexec: add dmesg log symbols to /proc/vmcoreinfo listsNeil Horman2009-04-023-0/+24
| | | | | | | | | | | | | | | | | | | | | It would be nice to be able to extract the dmesg log from a vmcore file without needing to keep the debug symbols for the running kernel handy all the time. We have a facility to do this in /proc/vmcore. This patch adds the log_buf and log_end symbols to the vmcoreinfo area so that tools (like makedumpfile) can easily extract the dmesg logs from a vmcore image. [akpm@linux-foundation.org: several fixes and cleanups] [akpm@linux-foundation.org: fix unused log_buf_kexec_setup()] [akpm@linux-foundation.org: build fix] Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Cc: Simon Horman <horms@verge.net.au> Acked-by: Vivek Goyal <vgoyal@redhat.com> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: Simon Horman <horms@verge.net.au> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* w1: coding style cleanups in w1_io.cDaniel Mack2009-04-021-8/+8
| | | | | | | | | This fixes a number of coding style issues I stubled over. Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* parport: netmos 9845 & 9855 1P4S fixesPhilippe De Muyter2009-04-021-5/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | netmos serial/parallel adapters come in different flavour differing only by the number of parallel and serial ports, which are encoded in the subdevice ID. Last fix of Christian Pellegrin for 9855 2P2S broke support for 9855 1P4S, and works only by side-effect for the first parallel port of a 2P2S, as this first parallel port is found by reading the second addr entry of (struct parport_pc_pci) cards[netmos_9855], which is not initialized, and hence has value 0, which happens to be the BAR of the first parallel port. netmos_9xx5_combo entry in (struct parport_pc_pci) cards[], which is used for a 9845 1P4S must also be fixed for the parallel port support when there are 4 serial ports because this entry currently gives 2 as BAR index for the parallel port. Actually, in this case, BAR 2 is the 3rd serial port while the parallel port is at BAR 4. I fixed 9845 1P4S and 9855 1P4S support, while preserving 9855 2P2S support, - by creating a netmos_9855_2p entry and using it for 9855 boards with 2 parallel ports : 9855 2P2S and 9855 2P0S boards, - and by allowing netmos_parallel_init to change not only the number of parallel ports (0 or 1), but making it also change the BAR index of the parallel port when the serial ports are before the parallel port. PS: the netmos_9855_2p entry in (struct pciserial_board) pci_parport_serial_boards[] is needed because netmos_parallel_init has no clean way to replace FL_BASE2 by FL_BASE4 in the description of the serial ports in function of the number of parallel ports on the card. Tested with 9845 1P4S, 9855 1P4S and 9855 2P2S boards. Signed-off-by: Philippe De Muyter <phdm@macqel.be> Tested-by: Christian Pellegrin <chripell@fsfe.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: AMD8111 driver Kconfig & MakefileHarry Ciao2009-04-021-0/+7
| | | | | | | | | Introduce Kconfig and Makefile options for AMD8111 EDAC driver. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: AMD8131 driver Kconfig & MakefileHarry Ciao2009-04-021-0/+7
| | | | | | | | | Introduce Kconfig and Makefile options for AMD8131 EDAC driver. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: AMD8131 driver source fileHarry Ciao2009-04-021-0/+379
| | | | | | | | | | | Introduce AMD8131 EDAC driver source file, which makes use of error detections on the PCI-X Bridge Controllers on the AMD8131 HyperTransport PCI-X Tunnel. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: AMD8131 driver header fileHarry Ciao2009-04-021-0/+119
| | | | | | | | | | | Introduce AMD8131 EDAC driver header file, which adds register and bits definitions for the PCI-X Bridge Controller on the AMD8131 HyperTransport I/O Hub. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pci: Add AMD8111 PCI Bridge PCI Device IDHarry Ciao2009-04-021-0/+1
| | | | | | | | | Add the PCI Device ID of the PCI Bridge Controller on AMD8111 chip. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: Add edac_pci_alloc_index()Harry Ciao2009-04-022-0/+15
| | | | | | | | | | | | Add edac_pci_alloc_index(), because for MAPLE platform there may exist several EDAC driver modules that could make use of edac_pci_ctl_info structure at the same time. The index allocation for these structures should be taken care of by EDAC core. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: AMD8111 driver source fileHarry Ciao2009-04-021-0/+595
| | | | | | | | | | | Introduce AMD8111 EDAC driver source file, which makes use of error detections on the LPC Bridge Controller and PCI Bridge Controller on the AMD8111 HyperTransport I/O Hub. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: AMD8111 driver header fileHarry Ciao2009-04-021-0/+130
| | | | | | | | | | | Introduce AMD8111 EDAC driver header file, which adds register and bits definitions for the LPC Bridge Controller and PCI Bridge Controller on the AMD8111 HyperTransport I/O Hub. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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