- 23 Aug, 2004 40 commits
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Andi Kleen authored
Trivial gcc-3.5 build fixes. Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Andi Kleen authored
Trivial gcc-3.5 build fixes. Signed-off-by:
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Andi Kleen authored
Trivial gcc-3.5 build fixes. Signed-off-by:
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Andi Kleen authored
Trivial gcc-3.5 build fixes. Signed-off-by:
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Andi Kleen authored
Trivial gcc-3.5 build fixes. Signed-off-by:
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Andi Kleen authored
Trivial gcc-3.5 build fixes. Signed-off-by:
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Andi Kleen authored
Trivial gcc-3.5 build fixes. Signed-off-by:
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Andi Kleen authored
Not strictly needed, since we're forcing `inline' to always_inline, but it's good for documentation purposes - This function needs the always_inline otherwise you get a link error when the compile time test is not optimized away. Signed-off-by:
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Andi Kleen authored
Trivial gcc-3.5 build fixes. Signed-off-by:
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Andi Kleen authored
Trivial gcc-3.5 build fixes. Signed-off-by:
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Andi Kleen authored
Trivial gcc-3.5 build fixes. Signed-off-by:
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Andi Kleen authored
Trivial gcc-3.5 build fixes. Signed-off-by:
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Andi Kleen authored
Trivial gcc-3.5 build fixes. Signed-off-by:
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Shai Fultheim authored
Use the percpu infrastructure rather than open-coded array[NR_CPUS]. Signed-off-by:
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Shai Fultheim authored
Use the percpu infrastructure rather than open-coded array[NR_CPUS]. Signed-off-by:
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Shai Fultheim authored
Use the percpu infrastructure rather than open-coded array[NR_CPUS]. Signed-off-by:
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Christoph Hellwig authored
The generation counters were removed from the idr code. Update idr.c comments, now uses doc-book style API documentation. Signed-off-by:
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Takashi Iwai authored
The patch adds the check of return value from resquest_region() to avoid the confliction of resource management with ALSA intel8x0 driver. Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Manfred Spraul authored
Attached is a cleanup of the main loops in sys_msgrcv and sys_msgsnd, based on ipc_lock_by_ptr(). Most backward gotos are gone, instead normal "for(;;)" loops until a suitable message is found. Description: - General cleanup of sys_msgrcv and sys_msgsnd: the function were too convoluted. - Enable lockless receive, update comments. - Use ipc_getref for sys_msgsnd(), it's better than rechecking that the msqid is still valid. Signed-Off-By:
Manfred Spraul <manfred@colorfullife.com> Signed-off-by:
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Manfred Spraul authored
Independent from the other patches: undo operations should not result in out of range semaphore values. The test for newval > SEMVMX is missing. The attached patch adds the test and a comment. Signed-Off-By:
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Manfred Spraul authored
The attached patch removes sem_revalidate and replaces it with ipc_rcu_getref() calls followed by ipc_lock_by_ptr(). Signed-Off-By:
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Manfred Spraul authored
The lifetime of the ipc objects (sem array, msg queue, shm mapping) is controlled by kern_ipc_perms->lock - a spinlock. There is no simple way to reacquire this spinlock after it was dropped to schedule()/kmalloc/copy_{to,from}_user/whatever. The attached patch adds a reference count as a preparation to get rid of sem_revalidate(). Signed-Off-By: -
Kevin Corry authored
Keep track of allocated minor numbers with an IDR instead of a bit-set. Signed-off-by:
Kevin Corry <kevcorry@us.ibm.com> Signed-off-by:
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Andrew Morton authored
Fix locking error identified by the Stanford locking checker. Signed-off-by:
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Davide Libenzi authored
The ptrace single step mode should not use the SYSGOOD bit and should not report SIGTRAP|0x80 to the ptrace parent. The following patch add an explicit check and to not add 0x80 in this is a singlestep trap. Signed-off-by:
Davide Libenzi <davidel@xmailserver.org> Signed-off-by:
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Andrew Morton authored
If an inode is backed by a memory-backed backing_dev, and it is not a blockdev inode, we can skip the entire superblock duwing writeback scanning. Signed-off-by:
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Neil Brown authored
Make sure the right errno is return from a readahead error in multipath Signed-off-by:
Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by:
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Brian King authored
Fixes blk_queue_resize_tags to properly handle allocation failures. Currently, if a memory allocation failure occurs during blk_queue_resize_tags, the tag map ends up getting freed, which should not happen. The old tag map should be preserved and only the resize should fail. Signed-off-by:
Jens Axboe <axboe@suse.de> Signed-off-by:
Brian King <brking@us.ibm.com> Signed-off-by:
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Brian King authored
init_tag_map should not initialize the busy_list, refcnt, or busy fields in the tag map since blk_queue_resize_tags can call it while requests are active. Patch moves this initialization into blk_queue_init_tags. Signed-off-by:
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Brian King authored
This is a resend of three ll_rw_blk patches related to tagged queuing. Currently blk_queue_free_tags cannot be called with ops outstanding. The scsi_tcq API defined to LLD scsi drivers allows for scsi_deactivate_tcq to be called (which calls blk_queue_free_tags) with ops outstanding. Change blk_queue_free_tags to no longer free the tags, but rather just disable tagged queuing and also modify blk_queue_init_tags to handle re-enabling tagged queuing after it has been disabled. Signed-off-by:
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Jens Axboe authored
Mount with "mount -o barrier=1" to enable barriers. Signed-off-by:
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Chris Mason authored
Add reiserfs support for flush barriers, mount with -o barrier=flush to enable them. Barriers are triggered on fsync and for log commits. Signed-off-by:
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Chris Mason authored
In order for filesystems to detect asynchronous ordered write failures for buffers sent via submit_bh, they need a bit they can test for in the buffer head. This adds BH_Eopnotsupp and the related buffer operations end_buffer_write_sync is changed to avoid a printk for BH_Eoptnotsupp related failures, since the FS is responsible for a retry. sync_dirty_buffer is changed to test for BH_Eopnotsupp and return -EOPNOTSUPP to the caller Some of this came from Jens Axboe Signed-off-by:
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Andrew Morton authored
Make sync_dirty_buffer() return the result of its syncing. Signed-off-by:
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Jens Axboe authored
md bits Signed-off-by:
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Jens Axboe authored
dm bits Signed-off-by:
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Jens Axboe authored
scsi bits Signed-off-by:
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Jens Axboe authored
ide bits Signed-off-by:
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Jens Axboe authored
IDE disk barrier core. Signed-off-by:
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Davide Libenzi authored
This patch permits a ptrace process on x86 to "see" the instruction following the INT #80h op. This has been tested on 2.6.6 using the appended test source. Running over this: 80485a9: b8 14 00 00 00 mov $0x14,%eax 80485ae: cd 80 int $0x80 80485b0: 89 45 ec mov %eax,0xffffffec(%ebp) 80485b3: eb f4 jmp 80485a9 <main+0x85> it produces: waiting ... done: pid=12387 status=1407 sig=5 EIP=0x080485a9 waiting ... done: pid=12387 status=1407 sig=5 EIP=0x080485ae waiting ... done: pid=12387 status=1407 sig=5 EIP=0x080485b0 waiting ... done: pid=12387 status=1407 sig=5 EIP=0x080485b3 (Andi says: "I think this patch is a bad idea. The ptrace handling is traditionally fragile (I remember when merging a rather simple patch from IBM for DR allocation long ago into the suse it broke several debuggers). If you really want to do that wait for 2.7.") test-program.c: #include <stdio.h> #include <stdlib.h> #include <signal.h> #include <unistd.h> #include <errno.h> #include <sys/types.h> #include <sys/ptrace.h> #include <sys/wait.h> #include <linux/user.h> #include <linux/unistd.h> int main(int ac, char **av) { int i, status, res; long start, end; pid_t cpid, pid; struct user_regs_struct ur; struct sigaction sa; sigemptyset(&sa.sa_mask); sa.sa_flags = 0; sa.sa_handler = SIG_DFL; sigaction(SIGCHLD, &sa, NULL); printf("nargs=%d\n", ac); if (ac == 1) goto tracer; printf("arg=%s\n", av[1]); loop: __asm__ volatile ("int $0x80" : "=a" (res) : "0" (__NR_getpid)); goto loop; endloop: exit(0); tracer: if ((cpid = fork()) != 0) goto parent; printf("child=%d\n", getpid()); ptrace(PTRACE_TRACEME, 0, NULL, NULL); execl(av[0], av[0], "child", NULL); exit(0); parent: start = (long) &&loop; end = (long) &&endloop; printf("pchild=%d\n", cpid); for (;;) { pid = wait(&status); if (pid != cpid) continue; res = WSTOPSIG(status); if (ptrace(PTRACE_GETREGS, pid, NULL, &ur)) { printf("[%d] error: ptrace(PTRACE_GETREGS, %d)\n", pid, pid); return 1; } if (ptrace(PTRACE_SINGLESTEP, pid, NULL, res != SIGTRAP ? res: 0)) { perror("ptrace(PTRACE_SINGLESTEP)"); return 1; } if (ur.eip >= start && ur.eip <= end) break; } for (i = 0; i < 15; i++) { printf("waiting ...\n"); pid = wait(&status); printf("done: pid=%d status=%d\n", pid, status); if (pid != cpid) continue; res = WSTOPSIG(status); printf("sig=%d\n", res); if (ptrace(PTRACE_GETREGS, pid, NULL, &ur)) { printf("[%d] error: ptrace(PTRACE_GETREGS, %d)\n", pid, pid); return 1; } printf("EIP=0x%08x\n", ur.eip); if (ptrace(PTRACE_SINGLESTEP, pid, NULL, res != SIGTRAP ? res: 0)) { perror("ptrace(PTRACE_SINGLESTEP)"); return 1; } } if (ptrace(PTRACE_CONT, cpid, NULL, SIGKILL)) { perror("ptrace(PTRACE_SINGLESTEP)"); return 1; } return 0; } Signed-off-by:
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