[PATCH 12/13] HW-latency: Add sample unit in sample data

[Luming Yu]

ns and us

Signed-off-by: Luming Yu <luming...@intel.com>
---
 drivers/misc/hw_latency_test.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/misc/hw_latency_test.c b/drivers/misc/hw_latency_test.c
index bcce8f4..0b79b5e 100644
--- a/drivers/misc/hw_latency_test.c
+++ b/drivers/misc/hw_latency_test.c
@@ -60,6 +60,7 @@ struct sample {
        u64     duration;
        struct timespec timestamp;
        u64     addr;
+       u8      unit; /*0: ns 1:us*/
        unsigned long   lost;
 };
 
@@ -130,7 +131,7 @@ static struct sample *buffer_get_sample(struct sample 
*sample)
        return sample;
 }
 
-static int buffer_add_sample(u64 sample)
+static int buffer_add_sample(u64 sample, u8 unit)
 {
        int ret = 0;
        unsigned int cpu = smp_processor_id();
@@ -144,6 +145,7 @@ static int buffer_add_sample(u64 sample)
                s.duration = sample;
                s.timestamp = CURRENT_TIME;
                s.addr = (u64) __start;
+               s.unit = unit;
                ret = __buffer_add_sample(&s);
 
                if (sample > data.max_sample)
@@ -184,7 +186,7 @@ static int get_random_bytes_sample(void *unused)
 
        } while (total <= data.sample_width);
 
-       ret = buffer_add_sample(sample);
+       ret = buffer_add_sample(sample, 1);
 out:
        kfree(buffer);
        return ret;
@@ -219,7 +221,7 @@ static int get_freq_sample(void *unused)
 
        } while (total <= data.sample_width);
 
-       ret = buffer_add_sample(sample);
+       ret = buffer_add_sample(sample, 1);
 out:
        return ret;
 }
@@ -252,7 +254,7 @@ static int get_tsc_sample(void *unused)
 
        } while (total <= data.sample_width);
 
-       ret = buffer_add_sample(sample);
+       ret = buffer_add_sample(sample, 0);
 out:
        return ret;
 }
@@ -289,7 +291,7 @@ static int get_mem_sample(void *unused)
 
        } while (total <= data.sample_width);
 
-       ret = buffer_add_sample(sample);
+       ret = buffer_add_sample(sample, 0);
 out:
        return ret;
 }
@@ -669,11 +671,12 @@ static ssize_t debug_sample_fread(struct file *filp, char 
__user *ubuf,
                        goto out;
                }
        }
-       len = snprintf(buf, sizeof(buf), "[%d]%010lu.%010lu\t%llu\t[%llx]\n",
+       len = snprintf(buf, sizeof(buf), "[%d]%010lu.%010lu\t%llu%2s\t[%llx]\n",
                        sample->cpu,
                        sample->timestamp.tv_sec,
                        sample->timestamp.tv_nsec,
                        sample->duration,
+                       sample->unit ? "us":"ns",
                        sample->addr);
        if (len > cnt)
                goto out;
-- 
1.7.12.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/