From: Aravinda Prasad <aravinda@linux.vnet.ibm.com>
To: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org
Cc: nfont@linux.vnet.ibm.com, naveen.n.rao@linux.vnet.ibm.com,
aravinda@linux.vnet.ibm.com
Subject: [PATCH] powerpc/pseries: Export VPA related data
Date: Tue, 04 Sep 2018 15:00:55 +0530 [thread overview]
Message-ID: <153605345531.16879.5116444181129068578.stgit@aravinda> (raw)
This patch exports VPA related data such as stolen and
donated CPU cycles through /proc/powerpc/lparcfg file.
Signed-off-by: Aravinda Prasad <aravinda@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/lppaca.h | 10 ++++++-
arch/powerpc/platforms/pseries/lparcfg.c | 45 ++++++++++++++++++++++++++++++
2 files changed, 54 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/lppaca.h b/arch/powerpc/include/asm/lppaca.h
index 7c23ce8..87e22f6 100644
--- a/arch/powerpc/include/asm/lppaca.h
+++ b/arch/powerpc/include/asm/lppaca.h
@@ -94,7 +94,15 @@ struct lppaca {
volatile __be32 dispersion_count; /* dispatch changed physical cpu */
volatile __be64 cmo_faults; /* CMO page fault count */
volatile __be64 cmo_fault_time; /* CMO page fault time */
- u8 reserved10[104];
+ volatile __be64 idle_stolen_purr;
+ volatile __be64 idle_stolen_spurr;
+ volatile __be64 busy_stolen_purr;
+ volatile __be64 busy_stolen_spurr;
+ volatile __be64 idle_donated_purr;
+ volatile __be64 idle_donated_spurr;
+ volatile __be64 busy_donated_purr;
+ volatile __be64 busy_donated_spurr;
+ u8 reserved10[40];
/* cacheline 4-5 */
diff --git a/arch/powerpc/platforms/pseries/lparcfg.c b/arch/powerpc/platforms/pseries/lparcfg.c
index 7c872dc..b986551 100644
--- a/arch/powerpc/platforms/pseries/lparcfg.c
+++ b/arch/powerpc/platforms/pseries/lparcfg.c
@@ -433,6 +433,50 @@ static void parse_em_data(struct seq_file *m)
seq_printf(m, "power_mode_data=%016lx\n", retbuf[0]);
}
+static void pseries_vpa_data(struct seq_file *m)
+{
+ int cpu;
+ unsigned long idle_stolen_purr = 0;
+ unsigned long idle_stolen_spurr = 0;
+ unsigned long busy_stolen_purr = 0;
+ unsigned long busy_stolen_spurr = 0;
+ unsigned long idle_donated_purr = 0;
+ unsigned long idle_donated_spurr = 0;
+ unsigned long busy_donated_purr = 0;
+ unsigned long busy_donated_spurr = 0;
+
+ if (!firmware_has_feature(FW_FEATURE_SPLPAR))
+ return;
+
+ for_each_possible_cpu(cpu) {
+ idle_stolen_purr +=
+ be64_to_cpu(lppaca_of(cpu).idle_stolen_purr);
+ idle_stolen_spurr +=
+ be64_to_cpu(lppaca_of(cpu).idle_stolen_spurr);
+ busy_stolen_purr +=
+ be64_to_cpu(lppaca_of(cpu).busy_stolen_purr);
+ busy_stolen_spurr +=
+ be64_to_cpu(lppaca_of(cpu).busy_stolen_spurr);
+ idle_donated_purr +=
+ be64_to_cpu(lppaca_of(cpu).idle_donated_purr);
+ idle_donated_spurr +=
+ be64_to_cpu(lppaca_of(cpu).idle_donated_spurr);
+ busy_donated_purr +=
+ be64_to_cpu(lppaca_of(cpu).busy_donated_purr);
+ busy_donated_spurr +=
+ be64_to_cpu(lppaca_of(cpu).busy_donated_spurr);
+ }
+
+ seq_printf(m, "idle_stolen_purr=%lu\n", idle_stolen_purr);
+ seq_printf(m, "idle_stolen_spurr=%lu\n", idle_stolen_spurr);
+ seq_printf(m, "busy_stolen_purr=%lu\n", busy_stolen_purr);
+ seq_printf(m, "busy_stolen_spurr=%lu\n", busy_stolen_spurr);
+ seq_printf(m, "idle_donated_purr=%lu\n", idle_donated_purr);
+ seq_printf(m, "idle_donated_spurr=%lu\n", idle_donated_spurr);
+ seq_printf(m, "busy_donated_purr=%lu\n", busy_donated_purr);
+ seq_printf(m, "busy_donated_spurr=%lu\n", busy_donated_spurr);
+}
+
static int pseries_lparcfg_data(struct seq_file *m, void *v)
{
int partition_potential_processors;
@@ -491,6 +535,7 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v)
seq_printf(m, "slb_size=%d\n", mmu_slb_size);
#endif
parse_em_data(m);
+ pseries_vpa_data(m);
return 0;
}
reply other threads:[~2018-09-04 9:54 UTC|newest]
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