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-rw-r--r--kernel/trace/blktrace.c100
1 files changed, 74 insertions, 26 deletions
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 638711c17504..bc251ed66724 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -23,7 +23,6 @@
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/debugfs.h>
-#include <linux/smp_lock.h>
#include <linux/time.h>
#include <linux/uaccess.h>
@@ -169,9 +168,12 @@ static int act_log_check(struct blk_trace *bt, u32 what, sector_t sector,
static const u32 ddir_act[2] = { BLK_TC_ACT(BLK_TC_READ),
BLK_TC_ACT(BLK_TC_WRITE) };
+#define BLK_TC_HARDBARRIER BLK_TC_BARRIER
+#define BLK_TC_RAHEAD BLK_TC_AHEAD
+
/* The ilog2() calls fall out because they're constant */
-#define MASK_TC_BIT(rw, __name) ((rw & (1 << BIO_RW_ ## __name)) << \
- (ilog2(BLK_TC_ ## __name) + BLK_TC_SHIFT - BIO_RW_ ## __name))
+#define MASK_TC_BIT(rw, __name) ((rw & REQ_ ## __name) << \
+ (ilog2(BLK_TC_ ## __name) + BLK_TC_SHIFT - __REQ_ ## __name))
/*
* The worker for the various blk_add_trace*() types. Fills out a
@@ -194,9 +196,9 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
return;
what |= ddir_act[rw & WRITE];
- what |= MASK_TC_BIT(rw, BARRIER);
- what |= MASK_TC_BIT(rw, SYNCIO);
- what |= MASK_TC_BIT(rw, AHEAD);
+ what |= MASK_TC_BIT(rw, HARDBARRIER);
+ what |= MASK_TC_BIT(rw, SYNC);
+ what |= MASK_TC_BIT(rw, RAHEAD);
what |= MASK_TC_BIT(rw, META);
what |= MASK_TC_BIT(rw, DISCARD);
@@ -323,6 +325,7 @@ static const struct file_operations blk_dropped_fops = {
.owner = THIS_MODULE,
.open = blk_dropped_open,
.read = blk_dropped_read,
+ .llseek = default_llseek,
};
static int blk_msg_open(struct inode *inode, struct file *filp)
@@ -362,6 +365,7 @@ static const struct file_operations blk_msg_fops = {
.owner = THIS_MODULE,
.open = blk_msg_open,
.write = blk_msg_write,
+ .llseek = noop_llseek,
};
/*
@@ -549,6 +553,41 @@ int blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
}
EXPORT_SYMBOL_GPL(blk_trace_setup);
+#if defined(CONFIG_COMPAT) && defined(CONFIG_X86_64)
+static int compat_blk_trace_setup(struct request_queue *q, char *name,
+ dev_t dev, struct block_device *bdev,
+ char __user *arg)
+{
+ struct blk_user_trace_setup buts;
+ struct compat_blk_user_trace_setup cbuts;
+ int ret;
+
+ if (copy_from_user(&cbuts, arg, sizeof(cbuts)))
+ return -EFAULT;
+
+ buts = (struct blk_user_trace_setup) {
+ .act_mask = cbuts.act_mask,
+ .buf_size = cbuts.buf_size,
+ .buf_nr = cbuts.buf_nr,
+ .start_lba = cbuts.start_lba,
+ .end_lba = cbuts.end_lba,
+ .pid = cbuts.pid,
+ };
+ memcpy(&buts.name, &cbuts.name, 32);
+
+ ret = do_blk_trace_setup(q, name, dev, bdev, &buts);
+ if (ret)
+ return ret;
+
+ if (copy_to_user(arg, &buts.name, 32)) {
+ blk_trace_remove(q);
+ return -EFAULT;
+ }
+
+ return 0;
+}
+#endif
+
int blk_trace_startstop(struct request_queue *q, int start)
{
int ret;
@@ -608,6 +647,12 @@ int blk_trace_ioctl(struct block_device *bdev, unsigned cmd, char __user *arg)
bdevname(bdev, b);
ret = blk_trace_setup(q, b, bdev->bd_dev, bdev, arg);
break;
+#if defined(CONFIG_COMPAT) && defined(CONFIG_X86_64)
+ case BLKTRACESETUP32:
+ bdevname(bdev, b);
+ ret = compat_blk_trace_setup(q, b, bdev->bd_dev, bdev, arg);
+ break;
+#endif
case BLKTRACESTART:
start = 1;
case BLKTRACESTOP:
@@ -661,10 +706,13 @@ static void blk_add_trace_rq(struct request_queue *q, struct request *rq,
if (likely(!bt))
return;
- if (blk_discard_rq(rq))
- rw |= (1 << BIO_RW_DISCARD);
+ if (rq->cmd_flags & REQ_DISCARD)
+ rw |= REQ_DISCARD;
+
+ if (rq->cmd_flags & REQ_SECURE)
+ rw |= REQ_SECURE;
- if (blk_pc_request(rq)) {
+ if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
what |= BLK_TC_ACT(BLK_TC_PC);
__blk_add_trace(bt, 0, blk_rq_bytes(rq), rw,
what, rq->errors, rq->cmd_len, rq->cmd);
@@ -925,7 +973,7 @@ void blk_add_driver_data(struct request_queue *q,
if (likely(!bt))
return;
- if (blk_pc_request(rq))
+ if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
__blk_add_trace(bt, 0, blk_rq_bytes(rq), 0,
BLK_TA_DRV_DATA, rq->errors, len, data);
else
@@ -1603,10 +1651,9 @@ static ssize_t sysfs_blk_trace_attr_show(struct device *dev,
struct block_device *bdev;
ssize_t ret = -ENXIO;
- lock_kernel();
bdev = bdget(part_devt(p));
if (bdev == NULL)
- goto out_unlock_kernel;
+ goto out;
q = blk_trace_get_queue(bdev);
if (q == NULL)
@@ -1634,8 +1681,7 @@ out_unlock_bdev:
mutex_unlock(&bdev->bd_mutex);
out_bdput:
bdput(bdev);
-out_unlock_kernel:
- unlock_kernel();
+out:
return ret;
}
@@ -1665,11 +1711,10 @@ static ssize_t sysfs_blk_trace_attr_store(struct device *dev,
ret = -ENXIO;
- lock_kernel();
p = dev_to_part(dev);
bdev = bdget(part_devt(p));
if (bdev == NULL)
- goto out_unlock_kernel;
+ goto out;
q = blk_trace_get_queue(bdev);
if (q == NULL)
@@ -1704,8 +1749,6 @@ out_unlock_bdev:
mutex_unlock(&bdev->bd_mutex);
out_bdput:
bdput(bdev);
-out_unlock_kernel:
- unlock_kernel();
out:
return ret ? ret : count;
}
@@ -1730,7 +1773,7 @@ void blk_dump_cmd(char *buf, struct request *rq)
int len = rq->cmd_len;
unsigned char *cmd = rq->cmd;
- if (!blk_pc_request(rq)) {
+ if (rq->cmd_type != REQ_TYPE_BLOCK_PC) {
buf[0] = '\0';
return;
}
@@ -1755,21 +1798,23 @@ void blk_fill_rwbs(char *rwbs, u32 rw, int bytes)
if (rw & WRITE)
rwbs[i++] = 'W';
- else if (rw & 1 << BIO_RW_DISCARD)
+ else if (rw & REQ_DISCARD)
rwbs[i++] = 'D';
else if (bytes)
rwbs[i++] = 'R';
else
rwbs[i++] = 'N';
- if (rw & 1 << BIO_RW_AHEAD)
+ if (rw & REQ_RAHEAD)
rwbs[i++] = 'A';
- if (rw & 1 << BIO_RW_BARRIER)
+ if (rw & REQ_HARDBARRIER)
rwbs[i++] = 'B';
- if (rw & 1 << BIO_RW_SYNCIO)
+ if (rw & REQ_SYNC)
rwbs[i++] = 'S';
- if (rw & 1 << BIO_RW_META)
+ if (rw & REQ_META)
rwbs[i++] = 'M';
+ if (rw & REQ_SECURE)
+ rwbs[i++] = 'E';
rwbs[i] = '\0';
}
@@ -1779,8 +1824,11 @@ void blk_fill_rwbs_rq(char *rwbs, struct request *rq)
int rw = rq->cmd_flags & 0x03;
int bytes;
- if (blk_discard_rq(rq))
- rw |= (1 << BIO_RW_DISCARD);
+ if (rq->cmd_flags & REQ_DISCARD)
+ rw |= REQ_DISCARD;
+
+ if (rq->cmd_flags & REQ_SECURE)
+ rw |= REQ_SECURE;
bytes = blk_rq_bytes(rq);
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-03 13:54:34 +0200