Core filesystem events markers. Markers added : fs_buffer_wait_end fs_buffer_wait_start fs_close fs_exec fs_ioctl fs_llseek fs_lseek fs_open fs_pollfd fs_pread64 fs_pwrite64 fs_read fs_readv fs_select fs_write fs_writev Signed-off-by: Mathieu Desnoyers CC: Alexander Viro --- fs/buffer.c | 3 +++ fs/compat.c | 2 ++ fs/exec.c | 2 ++ fs/ioctl.c | 3 +++ fs/open.c | 3 +++ fs/read_write.c | 23 +++++++++++++++++++++-- fs/select.c | 5 +++++ 7 files changed, 39 insertions(+), 2 deletions(-) Index: linux-2.6-sched-devel/fs/buffer.c =================================================================== --- linux-2.6-sched-devel.orig/fs/buffer.c 2008-04-22 20:04:10.000000000 -0400 +++ linux-2.6-sched-devel/fs/buffer.c 2008-04-22 20:23:31.000000000 -0400 @@ -41,6 +41,7 @@ #include #include #include +#include static int fsync_buffers_list(spinlock_t *lock, struct list_head *list); @@ -89,7 +90,9 @@ void unlock_buffer(struct buffer_head *b */ void __wait_on_buffer(struct buffer_head * bh) { + trace_mark(fs_buffer_wait_start, "bh %p", bh); wait_on_bit(&bh->b_state, BH_Lock, sync_buffer, TASK_UNINTERRUPTIBLE); + trace_mark(fs_buffer_wait_end, "bh %p", bh); } static void Index: linux-2.6-sched-devel/fs/compat.c =================================================================== --- linux-2.6-sched-devel.orig/fs/compat.c 2008-03-27 14:02:05.000000000 -0400 +++ linux-2.6-sched-devel/fs/compat.c 2008-04-22 20:23:31.000000000 -0400 @@ -50,6 +50,7 @@ #include #include #include +#include #include #include @@ -1401,6 +1402,7 @@ int compat_do_execve(char * filename, retval = search_binary_handler(bprm, regs); if (retval >= 0) { + trace_mark(fs_exec, "filename %s", filename); /* execve success */ security_bprm_free(bprm); acct_update_integrals(current); Index: linux-2.6-sched-devel/fs/ioctl.c =================================================================== --- linux-2.6-sched-devel.orig/fs/ioctl.c 2008-03-27 14:02:05.000000000 -0400 +++ linux-2.6-sched-devel/fs/ioctl.c 2008-04-22 20:23:31.000000000 -0400 @@ -13,6 +13,7 @@ #include #include #include +#include #include @@ -201,6 +202,8 @@ asmlinkage long sys_ioctl(unsigned int f if (!filp) goto out; + trace_mark(fs_ioctl, "fd %u cmd %u arg %lu", fd, cmd, arg); + error = security_file_ioctl(filp, cmd, arg); if (error) goto out_fput; Index: linux-2.6-sched-devel/fs/open.c =================================================================== --- linux-2.6-sched-devel.orig/fs/open.c 2008-04-22 20:04:11.000000000 -0400 +++ linux-2.6-sched-devel/fs/open.c 2008-04-22 20:23:31.000000000 -0400 @@ -27,6 +27,7 @@ #include #include #include +#include int vfs_statfs(struct dentry *dentry, struct kstatfs *buf) { @@ -1089,6 +1090,7 @@ long do_sys_open(int dfd, const char __u fsnotify_open(f->f_path.dentry); fd_install(fd, f); } + trace_mark(fs_open, "fd %d filename %s", fd, tmp); } putname(tmp); } @@ -1178,6 +1180,7 @@ asmlinkage long sys_close(unsigned int f filp = fdt->fd[fd]; if (!filp) goto out_unlock; + trace_mark(fs_close, "fd %u", fd); rcu_assign_pointer(fdt->fd[fd], NULL); FD_CLR(fd, fdt->close_on_exec); __put_unused_fd(files, fd); Index: linux-2.6-sched-devel/fs/read_write.c =================================================================== --- linux-2.6-sched-devel.orig/fs/read_write.c 2008-03-27 14:02:06.000000000 -0400 +++ linux-2.6-sched-devel/fs/read_write.c 2008-04-22 20:23:31.000000000 -0400 @@ -16,6 +16,7 @@ #include #include #include +#include #include "read_write.h" #include @@ -146,6 +147,9 @@ asmlinkage off_t sys_lseek(unsigned int if (res != (loff_t)retval) retval = -EOVERFLOW; /* LFS: should only happen on 32 bit platforms */ } + + trace_mark(fs_lseek, "fd %u offset %ld origin %u", fd, offset, origin); + fput_light(file, fput_needed); bad: return retval; @@ -173,6 +177,10 @@ asmlinkage long sys_llseek(unsigned int offset = vfs_llseek(file, ((loff_t) offset_high << 32) | offset_low, origin); + trace_mark(fs_llseek, "fd %u offset %llu origin %u", fd, + (unsigned long long)offset, + origin); + retval = (int)offset; if (offset >= 0) { retval = -EFAULT; @@ -359,6 +367,7 @@ asmlinkage ssize_t sys_read(unsigned int file = fget_light(fd, &fput_needed); if (file) { loff_t pos = file_pos_read(file); + trace_mark(fs_read, "fd %u count %zu", fd, count); ret = vfs_read(file, buf, count, &pos); file_pos_write(file, pos); fput_light(file, fput_needed); @@ -376,6 +385,7 @@ asmlinkage ssize_t sys_write(unsigned in file = fget_light(fd, &fput_needed); if (file) { loff_t pos = file_pos_read(file); + trace_mark(fs_write, "fd %u count %zu", fd, count); ret = vfs_write(file, buf, count, &pos); file_pos_write(file, pos); fput_light(file, fput_needed); @@ -397,8 +407,12 @@ asmlinkage ssize_t sys_pread64(unsigned file = fget_light(fd, &fput_needed); if (file) { ret = -ESPIPE; - if (file->f_mode & FMODE_PREAD) + if (file->f_mode & FMODE_PREAD) { + trace_mark(fs_pread64, "fd %u count %zu pos %llu", + fd, count, (unsigned long long)pos); ret = vfs_read(file, buf, count, &pos); + } + fput_light(file, fput_needed); } @@ -418,8 +432,11 @@ asmlinkage ssize_t sys_pwrite64(unsigned file = fget_light(fd, &fput_needed); if (file) { ret = -ESPIPE; - if (file->f_mode & FMODE_PWRITE) + if (file->f_mode & FMODE_PWRITE) { + trace_mark(fs_pwrite64, "fd %u count %zu pos %llu", + fd, count, (unsigned long long)pos); ret = vfs_write(file, buf, count, &pos); + } fput_light(file, fput_needed); } @@ -663,6 +680,7 @@ sys_readv(unsigned long fd, const struct file = fget_light(fd, &fput_needed); if (file) { loff_t pos = file_pos_read(file); + trace_mark(fs_readv, "fd %lu vlen %lu", fd, vlen); ret = vfs_readv(file, vec, vlen, &pos); file_pos_write(file, pos); fput_light(file, fput_needed); @@ -684,6 +702,7 @@ sys_writev(unsigned long fd, const struc file = fget_light(fd, &fput_needed); if (file) { loff_t pos = file_pos_read(file); + trace_mark(fs_writev, "fd %lu vlen %lu", fd, vlen); ret = vfs_writev(file, vec, vlen, &pos); file_pos_write(file, pos); fput_light(file, fput_needed); Index: linux-2.6-sched-devel/fs/select.c =================================================================== --- linux-2.6-sched-devel.orig/fs/select.c 2008-04-22 20:04:11.000000000 -0400 +++ linux-2.6-sched-devel/fs/select.c 2008-04-22 20:23:31.000000000 -0400 @@ -23,6 +23,7 @@ #include #include #include +#include #include @@ -231,6 +232,9 @@ int do_select(int n, fd_set_bits *fds, s file = fget_light(i, &fput_needed); if (file) { f_op = file->f_op; + trace_mark(fs_select, + "fd %d timeout #8d%lld", + i, (long long)*timeout); mask = DEFAULT_POLLMASK; if (f_op && f_op->poll) mask = (*f_op->poll)(file, retval ? NULL : wait); @@ -559,6 +563,7 @@ static inline unsigned int do_pollfd(str file = fget_light(fd, &fput_needed); mask = POLLNVAL; if (file != NULL) { + trace_mark(fs_pollfd, "fd %d", fd); mask = DEFAULT_POLLMASK; if (file->f_op && file->f_op->poll) mask = file->f_op->poll(file, pwait); Index: linux-2.6-sched-devel/fs/exec.c =================================================================== --- linux-2.6-sched-devel.orig/fs/exec.c 2008-03-27 14:02:05.000000000 -0400 +++ linux-2.6-sched-devel/fs/exec.c 2008-04-22 20:23:31.000000000 -0400 @@ -51,6 +51,7 @@ #include #include #include +#include #include #include @@ -1338,6 +1339,7 @@ int do_execve(char * filename, retval = search_binary_handler(bprm,regs); if (retval >= 0) { + trace_mark(fs_exec, "filename %s", filename); /* execve success */ free_arg_pages(bprm); security_bprm_free(bprm); -- Mathieu Desnoyers Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/