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| author | Theodore Ts'o <tytso@mit.edu> | 2009-09-30 00:32:06 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2009-09-30 00:32:06 -0400 |
| commit | bf6993276f74d46776f35c45ddef29b981b1d1c6 (patch) | |
| tree | 5c9cb128fed29a83add1932b12443edaa6fd06cc /include/linux | |
| parent | 296c355cd6443d89fa251885a8d78778fe111dc4 (diff) | |
| download | op-kernel-dev-bf6993276f74d46776f35c45ddef29b981b1d1c6.zip op-kernel-dev-bf6993276f74d46776f35c45ddef29b981b1d1c6.tar.gz | |
jbd2: Use tracepoints for history file
The /proc/fs/jbd2/<dev>/history was maintained manually; by using
tracepoints, we can get all of the existing functionality of the /proc
file plus extra capabilities thanks to the ftrace infrastructure. We
save memory as a bonus.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/jbd2.h | 27 |
1 files changed, 7 insertions, 20 deletions
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 52695d3..f1011f7 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -464,9 +464,9 @@ struct handle_s */ struct transaction_chp_stats_s { unsigned long cs_chp_time; - unsigned long cs_forced_to_close; - unsigned long cs_written; - unsigned long cs_dropped; + __u32 cs_forced_to_close; + __u32 cs_written; + __u32 cs_dropped; }; /* The transaction_t type is the guts of the journaling mechanism. It @@ -668,23 +668,16 @@ struct transaction_run_stats_s { unsigned long rs_flushing; unsigned long rs_logging; - unsigned long rs_handle_count; - unsigned long rs_blocks; - unsigned long rs_blocks_logged; + __u32 rs_handle_count; + __u32 rs_blocks; + __u32 rs_blocks_logged; }; struct transaction_stats_s { - int ts_type; unsigned long ts_tid; - union { - struct transaction_run_stats_s run; - struct transaction_chp_stats_s chp; - } u; + struct transaction_run_stats_s run; }; -#define JBD2_STATS_RUN 1 -#define JBD2_STATS_CHECKPOINT 2 - static inline unsigned long jbd2_time_diff(unsigned long start, unsigned long end) { @@ -988,12 +981,6 @@ struct journal_s /* * Journal statistics */ - struct transaction_stats_s *j_history; - int j_history_max; - int j_history_cur; - /* - * Protect the transactions statistics history - */ spinlock_t j_history_lock; struct proc_dir_entry *j_proc_entry; struct transaction_stats_s j_stats; |
