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| author | Paolo Bonzini <pbonzini@redhat.com> | 2022-09-01 19:21:27 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-09-01 19:21:27 -0400 |
| commit | 29250ba51bc1cbe8a87e923f76978b87c3247a8c (patch) | |
| tree | b6afc83e580ae3b746aa530434f56bb6fb80cc8b /lib/ratelimit.c | |
| parent | 35906d23cf036857738d49b0d9388376145dc017 (diff) | |
| parent | ca922fecda6caa5162409406dc3b663062d75089 (diff) | |
Merge tag 'kvm-s390-master-6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
PCI interpretation compile fixes
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 { |