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hv: trace: show cpu usage of vms in pcpu sharing case

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To maximize the cpu utilization, core 0 is usually shared by service
vm and guest vm. But there are no statistics to show the cpu occupation
of each vm.

This patch is to provide cpu usage statistic for users. To calculate
it, a new trace event is added and marked in scheduling context switch,
accompanying with a new python script to analyze the data from acrntrace
output.

Tracked-On: #8621
Signed-off-by: nacui <na.cui@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
Reviewed-by: Haiwei Li <haiwei.li@intel.com>
This commit is contained in:
nacui
2024-06-14 11:16:25 +08:00
committed by acrnsi-robot
parent 926f2346df
commit 512c98fd79
6 changed files with 216 additions and 2 deletions
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2
hypervisor/debug/trace.c
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@@ -111,7 +111,7 @@ void TRACE_6C(uint32_t evid, uint8_t a1, uint8_t a2, uint8_t a3, uint8_t a4, uin
#define TRACE_ENTER TRACE_16STR(TRACE_FUNC_ENTER, __func__)
#define TRACE_EXIT TRACE_16STR(TRACE_FUNC_EXIT, __func__)
static inline void TRACE_16STR(uint32_t evid, const char name[])
void TRACE_16STR(uint32_t evid, const char name[])
{
struct trace_entry entry;
uint16_t cpu_id = get_pcpu_id();