perf/x86-ibs: Rename some variables
Simple patch that just renames some variables for better
understanding.
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1333390758-10893-8-git-send-email-robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/arch/x86/kernel/cpu/perf_event_amd_ibs.c b/arch/x86/kernel/cpu/perf_event_amd_ibs.c
index 34dfa85..29a1bff 100644
--- a/arch/x86/kernel/cpu/perf_event_amd_ibs.c
+++ b/arch/x86/kernel/cpu/perf_event_amd_ibs.c
@@ -62,7 +62,7 @@
};
static int
-perf_event_set_period(struct hw_perf_event *hwc, u64 min, u64 max, u64 *count)
+perf_event_set_period(struct hw_perf_event *hwc, u64 min, u64 max, u64 *hw_period)
{
s64 left = local64_read(&hwc->period_left);
s64 period = hwc->sample_period;
@@ -91,7 +91,7 @@
if (left > max)
left = max;
- *count = (u64)left;
+ *hw_period = (u64)left;
return overflow;
}
@@ -262,13 +262,13 @@
static int perf_ibs_set_period(struct perf_ibs *perf_ibs,
struct hw_perf_event *hwc, u64 *period)
{
- int ret;
+ int overflow;
/* ignore lower 4 bits in min count: */
- ret = perf_event_set_period(hwc, 1<<4, perf_ibs->max_period, period);
+ overflow = perf_event_set_period(hwc, 1<<4, perf_ibs->max_period, period);
local64_set(&hwc->prev_count, 0);
- return ret;
+ return overflow;
}
static u64 get_ibs_fetch_count(u64 config)