Messages in this thread Patch in this message | | | From | Luming Yu <> | Subject | [PATCH 05/13] HW-latency: Add CPU field in sample output | Date | Sun, 4 Nov 2012 20:59:36 -0500 |
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The filed tells user the sample is from which cpu.
Signed-off-by: Luming Yu <luming.yu@intel.com> --- drivers/misc/hw_latency_test.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/misc/hw_latency_test.c b/drivers/misc/hw_latency_test.c index 4303644..256b1c0 100644 --- a/drivers/misc/hw_latency_test.c +++ b/drivers/misc/hw_latency_test.c @@ -124,11 +124,13 @@ static struct sample *buffer_get_sample(struct sample *sample) static int buffer_add_sample(u64 sample) { int ret = 0; + unsigned int cpu = smp_processor_id(); if (sample > data.threshold) { struct sample s; data.count++; + s.cpu = cpu; s.seqnum = data.count; s.duration = sample; s.timestamp = CURRENT_TIME; @@ -615,7 +617,8 @@ static ssize_t debug_sample_fread(struct file *filp, char __user *ubuf, goto out; } } - len = snprintf(buf, sizeof(buf), "%010lu.%010lu\t%llu\n", + len = snprintf(buf, sizeof(buf), "[%d]%010lu.%010lu\t%llu\n", + sample->cpu, sample->timestamp.tv_sec, sample->timestamp.tv_nsec, sample->duration); -- 1.7.12.1
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