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Diffstat (limited to 'kernel/printk/printk_ringbuffer.h')
-rw-r--r--kernel/printk/printk_ringbuffer.h63
1 files changed, 13 insertions, 50 deletions
diff --git a/kernel/printk/printk_ringbuffer.h b/kernel/printk/printk_ringbuffer.h
index 480499ce3c6b..0adaa685d1ca 100644
--- a/kernel/printk/printk_ringbuffer.h
+++ b/kernel/printk/printk_ringbuffer.h
@@ -9,15 +9,13 @@
/*
* Meta information about each stored message.
*
- * All fields are set and used by the printk code except for
- * @seq, @text_len, @dict_len, which are set and/or modified
- * by the ringbuffer code.
+ * All fields are set by the printk code except for @seq, which is
+ * set by the ringbuffer code.
*/
struct printk_info {
u64 seq; /* sequence number */
u64 ts_nsec; /* timestamp in nanoseconds */
u16 text_len; /* length of text message */
- u16 dict_len; /* length of dictionary message */
u8 facility; /* syslog facility */
u8 flags:5; /* internal record flags */
u8 level:3; /* syslog level */
@@ -30,23 +28,20 @@ struct printk_info {
* A structure providing the buffers, used by writers and readers.
*
* Writers:
- * Using prb_rec_init_wr(), a writer sets @text_buf_size and @dict_buf_size
- * before calling prb_reserve(). On success, prb_reserve() sets @info,
- * @text_buf, @dict_buf to buffers reserved for that writer.
+ * Using prb_rec_init_wr(), a writer sets @text_buf_size before calling
+ * prb_reserve(). On success, prb_reserve() sets @info and @text_buf to
+ * buffers reserved for that writer.
*
* Readers:
* Using prb_rec_init_rd(), a reader sets all fields before calling
- * prb_read_valid(). Note that the reader provides the @info, @text_buf,
- * @dict_buf buffers. On success, the struct pointed to by @info will be
- * filled and the char arrays pointed to by @text_buf and @dict_buf will
- * be filled with text and dict data.
+ * prb_read_valid(). Note that the reader provides the @info and @text_buf,
+ * buffers. On success, the struct pointed to by @info will be filled and
+ * the char array pointed to by @text_buf will be filled with text data.
*/
struct printk_record {
struct printk_info *info;
char *text_buf;
- char *dict_buf;
unsigned int text_buf_size;
- unsigned int dict_buf_size;
};
/* Specifies the logical position and span of a data block. */
@@ -63,7 +58,6 @@ struct prb_data_blk_lpos {
struct prb_desc {
atomic_long_t state_var;
struct prb_data_blk_lpos text_blk_lpos;
- struct prb_data_blk_lpos dict_blk_lpos;
};
/* A ringbuffer of "ID + data" elements. */
@@ -92,7 +86,6 @@ struct prb_desc_ring {
struct printk_ringbuffer {
struct prb_desc_ring desc_ring;
struct prb_data_ring text_data_ring;
- struct prb_data_ring dict_data_ring;
atomic_long_t fail;
};
@@ -236,9 +229,7 @@ enum desc_state {
* Note: The specified external buffer must be of the size:
* 2 ^ (descbits + avgtextbits)
*/
-#define _DEFINE_PRINTKRB(name, descbits, avgtextbits, avgdictbits, text_buf) \
-static char _##name##_dict[1U << ((avgdictbits) + (descbits))] \
- __aligned(__alignof__(unsigned long)); \
+#define _DEFINE_PRINTKRB(name, descbits, avgtextbits, text_buf) \
static struct prb_desc _##name##_descs[_DESCS_COUNT(descbits)] = { \
/* the initial head and tail */ \
[_DESCS_COUNT(descbits) - 1] = { \
@@ -246,7 +237,6 @@ static struct prb_desc _##name##_descs[_DESCS_COUNT(descbits)] = { \
.state_var = ATOMIC_INIT(DESC0_SV(descbits)), \
/* no associated data block */ \
.text_blk_lpos = FAILED_BLK_LPOS, \
- .dict_blk_lpos = FAILED_BLK_LPOS, \
}, \
}; \
static struct printk_info _##name##_infos[_DESCS_COUNT(descbits)] = { \
@@ -275,12 +265,6 @@ static struct printk_ringbuffer name = { \
.head_lpos = ATOMIC_LONG_INIT(BLK0_LPOS((avgtextbits) + (descbits))), \
.tail_lpos = ATOMIC_LONG_INIT(BLK0_LPOS((avgtextbits) + (descbits))), \
}, \
- .dict_data_ring = { \
- .size_bits = (avgtextbits) + (descbits), \
- .data = &_##name##_dict[0], \
- .head_lpos = ATOMIC_LONG_INIT(BLK0_LPOS((avgtextbits) + (descbits))), \
- .tail_lpos = ATOMIC_LONG_INIT(BLK0_LPOS((avgtextbits) + (descbits))), \
- }, \
.fail = ATOMIC_LONG_INIT(0), \
}
@@ -290,17 +274,15 @@ static struct printk_ringbuffer name = { \
* @name: The name of the ringbuffer variable.
* @descbits: The number of descriptors as a power-of-2 value.
* @avgtextbits: The average text data size per record as a power-of-2 value.
- * @avgdictbits: The average dictionary data size per record as a
- * power-of-2 value.
*
* This is a macro for defining a ringbuffer and all internal structures
* such that it is ready for immediate use. See _DEFINE_PRINTKRB() for a
* variant where the text data buffer can be specified externally.
*/
-#define DEFINE_PRINTKRB(name, descbits, avgtextbits, avgdictbits) \
+#define DEFINE_PRINTKRB(name, descbits, avgtextbits) \
static char _##name##_text[1U << ((avgtextbits) + (descbits))] \
__aligned(__alignof__(unsigned long)); \
-_DEFINE_PRINTKRB(name, descbits, avgtextbits, avgdictbits, &_##name##_text[0])
+_DEFINE_PRINTKRB(name, descbits, avgtextbits, &_##name##_text[0])
/* Writer Interface */
@@ -309,26 +291,13 @@ _DEFINE_PRINTKRB(name, descbits, avgtextbits, avgdictbits, &_##name##_text[0])
*
* @r: The record to initialize.
* @text_buf_size: The needed text buffer size.
- * @dict_buf_size: The needed dictionary buffer size.
- *
- * Initialize all the fields that a writer is interested in. If
- * @dict_buf_size is 0, a dictionary buffer will not be reserved.
- * @text_buf_size must be greater than 0.
- *
- * Note that although @dict_buf_size may be initialized to non-zero,
- * its value must be rechecked after a successful call to prb_reserve()
- * to verify a dictionary buffer was actually reserved. Dictionary buffer
- * reservation is allowed to fail.
*/
static inline void prb_rec_init_wr(struct printk_record *r,
- unsigned int text_buf_size,
- unsigned int dict_buf_size)
+ unsigned int text_buf_size)
{
r->info = NULL;
r->text_buf = NULL;
- r->dict_buf = NULL;
r->text_buf_size = text_buf_size;
- r->dict_buf_size = dict_buf_size;
}
bool prb_reserve(struct prb_reserved_entry *e, struct printk_ringbuffer *rb,
@@ -340,7 +309,6 @@ void prb_final_commit(struct prb_reserved_entry *e);
void prb_init(struct printk_ringbuffer *rb,
char *text_buf, unsigned int text_buf_size,
- char *dict_buf, unsigned int dict_buf_size,
struct prb_desc *descs, unsigned int descs_count_bits,
struct printk_info *infos);
unsigned int prb_record_text_space(struct prb_reserved_entry *e);
@@ -354,8 +322,6 @@ unsigned int prb_record_text_space(struct prb_reserved_entry *e);
* @info: A buffer to store record meta-data.
* @text_buf: A buffer to store text data.
* @text_buf_size: The size of @text_buf.
- * @dict_buf: A buffer to store dictionary data.
- * @dict_buf_size: The size of @dict_buf.
*
* Initialize all the fields that a reader is interested in. All arguments
* (except @r) are optional. Only record data for arguments that are
@@ -363,14 +329,11 @@ unsigned int prb_record_text_space(struct prb_reserved_entry *e);
*/
static inline void prb_rec_init_rd(struct printk_record *r,
struct printk_info *info,
- char *text_buf, unsigned int text_buf_size,
- char *dict_buf, unsigned int dict_buf_size)
+ char *text_buf, unsigned int text_buf_size)
{
r->info = info;
r->text_buf = text_buf;
- r->dict_buf = dict_buf;
r->text_buf_size = text_buf_size;
- r->dict_buf_size = dict_buf_size;
}
/**
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-14 10:16:12 +0000