6119fdc606
- ofpathname: speed up l2of_scsi() - ofpathname: failed to boot - update lparstat man page with -E option - enable support for ibm,drc-info property
100 lines
2.7 KiB
Diff
100 lines
2.7 KiB
Diff
From 9263de80d08451beacc29e4eb83492234d648796 Mon Sep 17 00:00:00 2001
|
|
Message-Id: <9263de80d08451beacc29e4eb83492234d648796.1587532692.git.kamalesh@linux.vnet.ibm.com>
|
|
In-Reply-To: <cover.1587532692.git.kamalesh@linux.vnet.ibm.com>
|
|
References: <cover.1587532692.git.kamalesh@linux.vnet.ibm.com>
|
|
From: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
|
|
Date: Tue, 21 Apr 2020 07:54:01 -0500
|
|
Subject: [PATCH V4 03/14] lparstat: Read the online cores
|
|
To: powerpc-utils-devel@googlegroups.com
|
|
Cc: Tyrel Datwyler <tyreld@linux.ibm.com>,
|
|
Nathan Lynch <nathanl@linux.ibm.com>,
|
|
Naveen N . Rao <naveen.n.rao@linux.vnet.ibm.com>,
|
|
Gautham R . Shenoy <ego@linux.vnet.ibm.com>,
|
|
Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
|
|
|
|
The accumulation of PURR/SPURR values are total of all online CPU in
|
|
the system, hence the timebase also needs to be scaled to the number
|
|
of cores. Add a helper to read the online cores.
|
|
|
|
Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
|
|
---
|
|
src/lparstat.c | 32 ++++++++++++++++++++++++++++++++
|
|
src/lparstat.h | 4 ++++
|
|
2 files changed, 36 insertions(+)
|
|
|
|
diff --git a/src/lparstat.c b/src/lparstat.c
|
|
index b7cb2d2..1d0b3a7 100644
|
|
--- a/src/lparstat.c
|
|
+++ b/src/lparstat.c
|
|
@@ -88,6 +88,11 @@ static int parse_smt_state(void)
|
|
return __do_smt(false, cpus_in_system, threads_per_cpu, false);
|
|
}
|
|
|
|
+static int get_one_smt_state(int core)
|
|
+{
|
|
+ return __get_one_smt_state(core, threads_per_cpu);
|
|
+}
|
|
+
|
|
void get_time()
|
|
{
|
|
struct timeval t;
|
|
@@ -556,6 +561,31 @@ void get_smt_mode(struct sysentry *se, char *buf)
|
|
sprintf(buf, "%d", smt_state);
|
|
}
|
|
|
|
+void get_online_cores(void)
|
|
+{
|
|
+ struct sysentry *se;
|
|
+ int *core_state;
|
|
+ int online_cores = 0;
|
|
+ int i;
|
|
+
|
|
+ core_state = calloc(cpus_in_system, sizeof(int));
|
|
+ if (!core_state) {
|
|
+ fprintf(stderr, "Failed to read online cores\n");
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ for (i = 0; i < cpus_in_system; i++) {
|
|
+ core_state[i] = (get_one_smt_state(i) > 0);
|
|
+ if (core_state[i])
|
|
+ online_cores++;
|
|
+ }
|
|
+
|
|
+ se = get_sysentry("online_cores");
|
|
+ sprintf(se->value, "%d", online_cores);
|
|
+
|
|
+ free(core_state);
|
|
+}
|
|
+
|
|
long long get_cpu_time_diff()
|
|
{
|
|
long long old_total = 0, new_total = 0;
|
|
@@ -591,6 +621,8 @@ void init_sysinfo(void)
|
|
fprintf(stderr, "Failed to capture system CPUs information\n");
|
|
exit(rc);
|
|
}
|
|
+
|
|
+ get_online_cores();
|
|
}
|
|
|
|
void init_sysdata(void)
|
|
diff --git a/src/lparstat.h b/src/lparstat.h
|
|
index ae84caf..6b65b48 100644
|
|
--- a/src/lparstat.h
|
|
+++ b/src/lparstat.h
|
|
@@ -189,6 +189,10 @@ struct sysentry system_data[] = {
|
|
.descr = "SMT",
|
|
.get = &get_smt_mode},
|
|
|
|
+ /* online cores, cpu_info_helpers::get_one_smt_state() */
|
|
+ {.name = "online_cores",
|
|
+ .descr = "Online Cores"},
|
|
+
|
|
/* /proc/stat */
|
|
{.name = "cpu_total",
|
|
.descr = "CPU Total Time"},
|
|
--
|
|
2.25.3
|
|
|