diff options
Diffstat (limited to 'fs/read_write.c')
| -rw-r--r-- | fs/read_write.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/fs/read_write.c b/fs/read_write.c index 5520f8ad550..6a3f7f9c9db 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -15,6 +15,7 @@ #include <linux/syscalls.h> #include <linux/pagemap.h> #include <linux/splice.h> +#include <trace/fs.h> #include "read_write.h" #include <asm/uaccess.h> @@ -30,6 +31,15 @@ const struct file_operations generic_ro_fops = { EXPORT_SYMBOL(generic_ro_fops); +DEFINE_TRACE(fs_lseek); +DEFINE_TRACE(fs_llseek); +DEFINE_TRACE(fs_read); +DEFINE_TRACE(fs_write); +DEFINE_TRACE(fs_pread64); +DEFINE_TRACE(fs_pwrite64); +DEFINE_TRACE(fs_readv); +DEFINE_TRACE(fs_writev); + static inline int unsigned_offsets(struct file *file) { return file->f_mode & FMODE_UNSIGNED_OFFSET; @@ -187,6 +197,9 @@ SYSCALL_DEFINE3(lseek, unsigned int, fd, off_t, offset, unsigned int, origin) if (res != (loff_t)retval) retval = -EOVERFLOW; /* LFS: should only happen on 32 bit platforms */ } + + trace_fs_lseek(fd, offset, origin); + fput_light(file, fput_needed); bad: return retval; @@ -214,6 +227,8 @@ SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned long, offset_high, offset = vfs_llseek(file, ((loff_t) offset_high << 32) | offset_low, origin); + trace_fs_llseek(fd, offset, origin); + retval = (int)offset; if (offset >= 0) { retval = -EFAULT; @@ -409,6 +424,7 @@ SYSCALL_DEFINE3(read, unsigned int, fd, char __user *, buf, size_t, count) if (file) { loff_t pos = file_pos_read(file); ret = vfs_read(file, buf, count, &pos); + trace_fs_read(fd, buf, count, ret); file_pos_write(file, pos); fput_light(file, fput_needed); } @@ -427,6 +443,7 @@ SYSCALL_DEFINE3(write, unsigned int, fd, const char __user *, buf, if (file) { loff_t pos = file_pos_read(file); ret = vfs_write(file, buf, count, &pos); + trace_fs_write(fd, buf, count, ret); file_pos_write(file, pos); fput_light(file, fput_needed); } @@ -447,8 +464,11 @@ SYSCALL_DEFINE(pread64)(unsigned int fd, char __user *buf, file = fget_light(fd, &fput_needed); if (file) { ret = -ESPIPE; - if (file->f_mode & FMODE_PREAD) + if (file->f_mode & FMODE_PREAD) { ret = vfs_read(file, buf, count, &pos); + trace_fs_pread64(fd, buf, count, pos, ret); + } + fput_light(file, fput_needed); } @@ -476,8 +496,10 @@ SYSCALL_DEFINE(pwrite64)(unsigned int fd, const char __user *buf, file = fget_light(fd, &fput_needed); if (file) { ret = -ESPIPE; - if (file->f_mode & FMODE_PWRITE) + if (file->f_mode & FMODE_PWRITE) { ret = vfs_write(file, buf, count, &pos); + trace_fs_pwrite64(fd, buf, count, pos, ret); + } fput_light(file, fput_needed); } @@ -736,6 +758,7 @@ SYSCALL_DEFINE3(readv, unsigned long, fd, const struct iovec __user *, vec, if (file) { loff_t pos = file_pos_read(file); ret = vfs_readv(file, vec, vlen, &pos); + trace_fs_readv(fd, vec, vlen, ret); file_pos_write(file, pos); fput_light(file, fput_needed); } @@ -757,6 +780,7 @@ SYSCALL_DEFINE3(writev, unsigned long, fd, const struct iovec __user *, vec, if (file) { loff_t pos = file_pos_read(file); ret = vfs_writev(file, vec, vlen, &pos); + trace_fs_writev(fd, vec, vlen, ret); file_pos_write(file, pos); fput_light(file, fput_needed); } |