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path: root/drivers/scsi/scsi_logging.c
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Diffstat (limited to 'drivers/scsi/scsi_logging.c')
-rw-r--r--drivers/scsi/scsi_logging.c48
1 files changed, 3 insertions, 45 deletions
diff --git a/drivers/scsi/scsi_logging.c b/drivers/scsi/scsi_logging.c
index 39b8cc4574b4..c6ed0b12e807 100644
--- a/drivers/scsi/scsi_logging.c
+++ b/drivers/scsi/scsi_logging.c
@@ -15,57 +15,15 @@
#include <scsi/scsi_eh.h>
#include <scsi/scsi_dbg.h>
-#define SCSI_LOG_SPOOLSIZE 4096
-
-#if (SCSI_LOG_SPOOLSIZE / SCSI_LOG_BUFSIZE) > BITS_PER_LONG
-#warning SCSI logging bitmask too large
-#endif
-
-struct scsi_log_buf {
- char buffer[SCSI_LOG_SPOOLSIZE];
- unsigned long map;
-};
-
-static DEFINE_PER_CPU(struct scsi_log_buf, scsi_format_log);
-
static char *scsi_log_reserve_buffer(size_t *len)
{
- struct scsi_log_buf *buf;
- unsigned long map_bits = sizeof(buf->buffer) / SCSI_LOG_BUFSIZE;
- unsigned long idx = 0;
-
- preempt_disable();
- buf = this_cpu_ptr(&scsi_format_log);
- idx = find_first_zero_bit(&buf->map, map_bits);
- if (likely(idx < map_bits)) {
- while (test_and_set_bit(idx, &buf->map)) {
- idx = find_next_zero_bit(&buf->map, map_bits, idx);
- if (idx >= map_bits)
- break;
- }
- }
- if (WARN_ON(idx >= map_bits)) {
- preempt_enable();
- return NULL;
- }
- *len = SCSI_LOG_BUFSIZE;
- return buf->buffer + idx * SCSI_LOG_BUFSIZE;
+ *len = 128;
+ return kmalloc(*len, GFP_ATOMIC);
}
static void scsi_log_release_buffer(char *bufptr)
{
- struct scsi_log_buf *buf;
- unsigned long idx;
- int ret;
-
- buf = this_cpu_ptr(&scsi_format_log);
- if (bufptr >= buf->buffer &&
- bufptr < buf->buffer + SCSI_LOG_SPOOLSIZE) {
- idx = (bufptr - buf->buffer) / SCSI_LOG_BUFSIZE;
- ret = test_and_clear_bit(idx, &buf->map);
- WARN_ON(!ret);
- }
- preempt_enable();
+ kfree(bufptr);
}
static inline const char *scmd_name(const struct scsi_cmnd *scmd)