summaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
authorVaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>2010-03-31 21:39:24 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-04-07 18:00:29 +1000
commit6fe9d1facb5346a615f9b571df3b91593afb29c3 (patch)
treeacc018141869eb3b7ef8b89eea425d719c2a732b /arch
parent9c7cc234dc5edf5379fbbab4973f6704f59bc57b (diff)
downloadop-kernel-dev-6fe9d1facb5346a615f9b571df3b91593afb29c3.zip
op-kernel-dev-6fe9d1facb5346a615f9b571df3b91593afb29c3.tar.gz
powerpc/pseries: Export data from new hcall H_EM_GET_PARMS
Add support for H_EM_GET_PARMS hcall that will return data related to power modes from the platform. Export the data directly to user space for administrative tools to interpret and use. cat /proc/powerpc/lparcfg will export power mode data Signed-off-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/include/asm/hvcall.h1
-rw-r--r--arch/powerpc/kernel/lparcfg.c12
2 files changed, 12 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
index f027581..ebe7493 100644
--- a/arch/powerpc/include/asm/hvcall.h
+++ b/arch/powerpc/include/asm/hvcall.h
@@ -228,6 +228,7 @@
#define H_JOIN 0x298
#define H_VASI_STATE 0x2A4
#define H_ENABLE_CRQ 0x2B0
+#define H_GET_EM_PARMS 0x2B8
#define H_SET_MPP 0x2D0
#define H_GET_MPP 0x2D4
#define MAX_HCALL_OPCODE H_GET_MPP
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index c2c70e1..50362b6 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -38,7 +38,7 @@
#include <asm/vio.h>
#include <asm/mmu.h>
-#define MODULE_VERS "1.8"
+#define MODULE_VERS "1.9"
#define MODULE_NAME "lparcfg"
/* #define LPARCFG_DEBUG */
@@ -487,6 +487,14 @@ static void splpar_dispatch_data(struct seq_file *m)
seq_printf(m, "dispatch_dispersions=%lu\n", dispatch_dispersions);
}
+static void parse_em_data(struct seq_file *m)
+{
+ unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+ if (plpar_hcall(H_GET_EM_PARMS, retbuf) == H_SUCCESS)
+ seq_printf(m, "power_mode_data=%016lx\n", retbuf[0]);
+}
+
static int pseries_lparcfg_data(struct seq_file *m, void *v)
{
int partition_potential_processors;
@@ -541,6 +549,8 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v)
seq_printf(m, "slb_size=%d\n", mmu_slb_size);
+ parse_em_data(m);
+
return 0;
}
OpenPOWER on IntegriCloud