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| author |   Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> | 2010-03-31 21:39:24 +0000 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-04-07 18:00:29 +1000 |
| commit | 6fe9d1facb5346a615f9b571df3b91593afb29c3 (patch) | |
| tree | acc018141869eb3b7ef8b89eea425d719c2a732b | |
| parent | powerpc: Disable interrupts for data breakpoint exceptions (diff) | |
| download | linux-dev-6fe9d1facb5346a615f9b571df3b91593afb29c3.tar.xz linux-dev-6fe9d1facb5346a615f9b571df3b91593afb29c3.zip | |
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>
| -rw-r--r-- | arch/powerpc/include/asm/hvcall.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/lparcfg.c | 12 |
2 files changed, 12 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h index f0275818b95c..ebe7493e93e3 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 c2c70e1b32cd..50362b6ef6e9 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; } |