diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2022-09-29 12:20:50 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-09-29 12:20:50 +0200 |
| commit | a1ebcd59430236b336428bbf8e1da16fb87d56e4 (patch) | |
| tree | 126b999f1eae9b7ecf1045eec425a6dbcdcb4351 /lib/ratelimit.c | |
| parent | cce6a2d7e0e494c453ad73e1e78bd50684f20cca (diff) | |
| parent | f76349cf41451c5c42a99f18a9163377e4b364ff (diff) | |
Merge branch 'v6.0-rc7'
Merge upstream to get RAPTORLAKE_S
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Diffstat (limited to 'lib/ratelimit.c')
| -rw-r--r-- | lib/ratelimit.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/lib/ratelimit.c b/lib/ratelimit.c index e01a93f46f83..ce945c17980b 100644 --- a/lib/ratelimit.c +++ b/lib/ratelimit.c @@ -26,10 +26,16 @@ */ int ___ratelimit(struct ratelimit_state *rs, const char *func) { + /* Paired with WRITE_ONCE() in .proc_handler(). + * Changing two values seperately could be inconsistent + * and some message could be lost. (See: net_ratelimit_state). + */ + int interval = READ_ONCE(rs->interval); + int burst = READ_ONCE(rs->burst); unsigned long flags; int ret; - if (!rs->interval) + if (!interval) return 1; /* @@ -44,7 +50,7 @@ int ___ratelimit(struct ratelimit_state *rs, const char *func) if (!rs->begin) rs->begin = jiffies; - if (time_is_before_jiffies(rs->begin + rs->interval)) { + if (time_is_before_jiffies(rs->begin + interval)) { if (rs->missed) { if (!(rs->flags & RATELIMIT_MSG_ON_RELEASE)) { printk_deferred(KERN_WARNING @@ -56,7 +62,7 @@ int ___ratelimit(struct ratelimit_state *rs, const char *func) rs->begin = jiffies; rs->printed = 0; } - if (rs->burst && rs->burst > rs->printed) { + if (burst && burst > rs->printed) { rs->printed++; ret = 1; } else { |