diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2020-03-25 12:27:48 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2020-03-25 17:43:09 +0000 |
| commit | bfdc99d440c4eb950e3a6a36374c3c30bdbd82d9 (patch) | |
| tree | 818474372fa0d4067e7b950c1a0c7c7dffc83a0e /runner | |
| parent | dfd861de1e00f1e1656f837b4d5b08628eba48c6 (diff) | |
runner: Only show the kmsg overflow message once
Instead of repeating every single time we overflow the read from kmsg,
just once per test is enough warning.
v2: Just suppress the multiple s/underflow/overflow/ messages. Having a
buffer smaller than a single kmsg packet is unlikely.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Petri Latvala <petri.latvala@intel.com>
Reviewed-by: Petri Latvala <petri.latvala@intel.com>
Diffstat (limited to 'runner')
| -rw-r--r-- | runner/executor.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/runner/executor.c b/runner/executor.c index a56cb5d6..d72a5937 100644 --- a/runner/executor.c +++ b/runner/executor.c @@ -549,6 +549,7 @@ static int dump_dmesg(int kmsgfd, int outfd) int comparefd; unsigned flags; unsigned long long seq, cmpseq, usec; + bool underflow_once = false; char cont; char buf[2048]; ssize_t r; @@ -586,7 +587,10 @@ static int dump_dmesg(int kmsgfd, int outfd) r = read(kmsgfd, buf, sizeof(buf)); if (r < 0) { if (errno == EPIPE) { - errf("Warning: kernel log ringbuffer underflow, some records lost.\n"); + if (!underflow_once) { + errf("Warning: kernel log ringbuffer underflow, some records lost.\n"); + underflow_once = true; + } continue; } else if (errno == EINVAL) { errf("Warning: Buffer too small for kernel log record, record lost.\n"); |