gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

perf_event_open: Add support for counting REF_CPU_CYCLES

Browse Source 
Using thread's tsc count instead of performance counter

Refs: #1025
Change-Id: I1d7a18f1c52f1d52087002d31818638a6b206014
This commit is contained in:
Ken Sato
2019-09-25 21:14:35 +09:00
committed by Masamichi Takagi
parent bc06d68d84
commit 309145587f
18 changed files with 2360 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
lib/include/mc_perf_event.h
View File

@@ -256,12 +256,20 @@ struct hw_perf_event_extra {
int idx;
};
/**
* enum perf_event_state - the states of an event:
*/
enum perf_event_state {
PERF_EVENT_STATE_INACTIVE = 0,
PERF_EVENT_STATE_ACTIVE = 1,
};
struct mc_perf_event {
struct perf_event_attr attr;
struct hw_perf_event_extra extra_reg;
unsigned long hw_config;
unsigned long hw_config_ext;
enum perf_event_state state;
int cpu_id;
int counter_id; // counter_id
unsigned long count; // counter_value
@@ -275,6 +283,13 @@ struct mc_perf_event {
int nr_siblings;
int pid;
struct list_head group_entry;
int use_invariant_tsc;
long long base_user_tsc;
long long stopped_user_tsc;
long long user_accum_count;
long long base_system_tsc;
long long stopped_system_tsc;
long long system_accum_count;
};
struct perf_event_mmap_page {