![Anton Blanchard](/assets/img/avatar_default.png)
PHYP tells us how often a shared processor dispatch changed physical cpus. This can highlight performance problems caused by the hypervisor. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
766 lines
20 KiB
C
766 lines
20 KiB
C
/*
|
|
* PowerPC64 LPAR Configuration Information Driver
|
|
*
|
|
* Dave Engebretsen engebret@us.ibm.com
|
|
* Copyright (c) 2003 Dave Engebretsen
|
|
* Will Schmidt willschm@us.ibm.com
|
|
* SPLPAR updates, Copyright (c) 2003 Will Schmidt IBM Corporation.
|
|
* seq_file updates, Copyright (c) 2004 Will Schmidt IBM Corporation.
|
|
* Nathan Lynch nathanl@austin.ibm.com
|
|
* Added lparcfg_write, Copyright (C) 2004 Nathan Lynch IBM Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This driver creates a proc file at /proc/ppc64/lparcfg which contains
|
|
* keyword - value pairs that specify the configuration of the partition.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/init.h>
|
|
#include <linux/seq_file.h>
|
|
#include <asm/uaccess.h>
|
|
#include <asm/iseries/hv_lp_config.h>
|
|
#include <asm/lppaca.h>
|
|
#include <asm/hvcall.h>
|
|
#include <asm/firmware.h>
|
|
#include <asm/rtas.h>
|
|
#include <asm/system.h>
|
|
#include <asm/time.h>
|
|
#include <asm/prom.h>
|
|
#include <asm/vdso_datapage.h>
|
|
#include <asm/vio.h>
|
|
|
|
#define MODULE_VERS "1.8"
|
|
#define MODULE_NAME "lparcfg"
|
|
|
|
/* #define LPARCFG_DEBUG */
|
|
|
|
static struct proc_dir_entry *proc_ppc64_lparcfg;
|
|
|
|
/*
|
|
* Track sum of all purrs across all processors. This is used to further
|
|
* calculate usage values by different applications
|
|
*/
|
|
static unsigned long get_purr(void)
|
|
{
|
|
unsigned long sum_purr = 0;
|
|
int cpu;
|
|
|
|
for_each_possible_cpu(cpu) {
|
|
if (firmware_has_feature(FW_FEATURE_ISERIES))
|
|
sum_purr += lppaca[cpu].emulated_time_base;
|
|
else {
|
|
struct cpu_usage *cu;
|
|
|
|
cu = &per_cpu(cpu_usage_array, cpu);
|
|
sum_purr += cu->current_tb;
|
|
}
|
|
}
|
|
return sum_purr;
|
|
}
|
|
|
|
#ifdef CONFIG_PPC_ISERIES
|
|
|
|
/*
|
|
* Methods used to fetch LPAR data when running on an iSeries platform.
|
|
*/
|
|
static int iseries_lparcfg_data(struct seq_file *m, void *v)
|
|
{
|
|
unsigned long pool_id;
|
|
int shared, entitled_capacity, max_entitled_capacity;
|
|
int processors, max_processors;
|
|
unsigned long purr = get_purr();
|
|
|
|
shared = (int)(local_paca->lppaca_ptr->shared_proc);
|
|
|
|
seq_printf(m, "system_active_processors=%d\n",
|
|
(int)HvLpConfig_getSystemPhysicalProcessors());
|
|
|
|
seq_printf(m, "system_potential_processors=%d\n",
|
|
(int)HvLpConfig_getSystemPhysicalProcessors());
|
|
|
|
processors = (int)HvLpConfig_getPhysicalProcessors();
|
|
seq_printf(m, "partition_active_processors=%d\n", processors);
|
|
|
|
max_processors = (int)HvLpConfig_getMaxPhysicalProcessors();
|
|
seq_printf(m, "partition_potential_processors=%d\n", max_processors);
|
|
|
|
if (shared) {
|
|
entitled_capacity = HvLpConfig_getSharedProcUnits();
|
|
max_entitled_capacity = HvLpConfig_getMaxSharedProcUnits();
|
|
} else {
|
|
entitled_capacity = processors * 100;
|
|
max_entitled_capacity = max_processors * 100;
|
|
}
|
|
seq_printf(m, "partition_entitled_capacity=%d\n", entitled_capacity);
|
|
|
|
seq_printf(m, "partition_max_entitled_capacity=%d\n",
|
|
max_entitled_capacity);
|
|
|
|
if (shared) {
|
|
pool_id = HvLpConfig_getSharedPoolIndex();
|
|
seq_printf(m, "pool=%d\n", (int)pool_id);
|
|
seq_printf(m, "pool_capacity=%d\n",
|
|
(int)(HvLpConfig_getNumProcsInSharedPool(pool_id) *
|
|
100));
|
|
seq_printf(m, "purr=%ld\n", purr);
|
|
}
|
|
|
|
seq_printf(m, "shared_processor_mode=%d\n", shared);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#else /* CONFIG_PPC_ISERIES */
|
|
|
|
static int iseries_lparcfg_data(struct seq_file *m, void *v)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_PPC_ISERIES */
|
|
|
|
#ifdef CONFIG_PPC_PSERIES
|
|
/*
|
|
* Methods used to fetch LPAR data when running on a pSeries platform.
|
|
*/
|
|
/**
|
|
* h_get_mpp
|
|
* H_GET_MPP hcall returns info in 7 parms
|
|
*/
|
|
int h_get_mpp(struct hvcall_mpp_data *mpp_data)
|
|
{
|
|
int rc;
|
|
unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
|
|
|
|
rc = plpar_hcall9(H_GET_MPP, retbuf);
|
|
|
|
mpp_data->entitled_mem = retbuf[0];
|
|
mpp_data->mapped_mem = retbuf[1];
|
|
|
|
mpp_data->group_num = (retbuf[2] >> 2 * 8) & 0xffff;
|
|
mpp_data->pool_num = retbuf[2] & 0xffff;
|
|
|
|
mpp_data->mem_weight = (retbuf[3] >> 7 * 8) & 0xff;
|
|
mpp_data->unallocated_mem_weight = (retbuf[3] >> 6 * 8) & 0xff;
|
|
mpp_data->unallocated_entitlement = retbuf[3] & 0xffffffffffff;
|
|
|
|
mpp_data->pool_size = retbuf[4];
|
|
mpp_data->loan_request = retbuf[5];
|
|
mpp_data->backing_mem = retbuf[6];
|
|
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(h_get_mpp);
|
|
|
|
struct hvcall_ppp_data {
|
|
u64 entitlement;
|
|
u64 unallocated_entitlement;
|
|
u16 group_num;
|
|
u16 pool_num;
|
|
u8 capped;
|
|
u8 weight;
|
|
u8 unallocated_weight;
|
|
u16 active_procs_in_pool;
|
|
u16 active_system_procs;
|
|
};
|
|
|
|
/*
|
|
* H_GET_PPP hcall returns info in 4 parms.
|
|
* entitled_capacity,unallocated_capacity,
|
|
* aggregation, resource_capability).
|
|
*
|
|
* R4 = Entitled Processor Capacity Percentage.
|
|
* R5 = Unallocated Processor Capacity Percentage.
|
|
* R6 (AABBCCDDEEFFGGHH).
|
|
* XXXX - reserved (0)
|
|
* XXXX - reserved (0)
|
|
* XXXX - Group Number
|
|
* XXXX - Pool Number.
|
|
* R7 (IIJJKKLLMMNNOOPP).
|
|
* XX - reserved. (0)
|
|
* XX - bit 0-6 reserved (0). bit 7 is Capped indicator.
|
|
* XX - variable processor Capacity Weight
|
|
* XX - Unallocated Variable Processor Capacity Weight.
|
|
* XXXX - Active processors in Physical Processor Pool.
|
|
* XXXX - Processors active on platform.
|
|
*/
|
|
static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data)
|
|
{
|
|
unsigned long rc;
|
|
unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
|
|
|
|
rc = plpar_hcall(H_GET_PPP, retbuf);
|
|
|
|
ppp_data->entitlement = retbuf[0];
|
|
ppp_data->unallocated_entitlement = retbuf[1];
|
|
|
|
ppp_data->group_num = (retbuf[2] >> 2 * 8) & 0xffff;
|
|
ppp_data->pool_num = retbuf[2] & 0xffff;
|
|
|
|
ppp_data->capped = (retbuf[3] >> 6 * 8) & 0x01;
|
|
ppp_data->weight = (retbuf[3] >> 5 * 8) & 0xff;
|
|
ppp_data->unallocated_weight = (retbuf[3] >> 4 * 8) & 0xff;
|
|
ppp_data->active_procs_in_pool = (retbuf[3] >> 2 * 8) & 0xffff;
|
|
ppp_data->active_system_procs = retbuf[3] & 0xffff;
|
|
|
|
return rc;
|
|
}
|
|
|
|
static unsigned h_pic(unsigned long *pool_idle_time,
|
|
unsigned long *num_procs)
|
|
{
|
|
unsigned long rc;
|
|
unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
|
|
|
|
rc = plpar_hcall(H_PIC, retbuf);
|
|
|
|
*pool_idle_time = retbuf[0];
|
|
*num_procs = retbuf[1];
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* parse_ppp_data
|
|
* Parse out the data returned from h_get_ppp and h_pic
|
|
*/
|
|
static void parse_ppp_data(struct seq_file *m)
|
|
{
|
|
struct hvcall_ppp_data ppp_data;
|
|
int rc;
|
|
|
|
rc = h_get_ppp(&ppp_data);
|
|
if (rc)
|
|
return;
|
|
|
|
seq_printf(m, "partition_entitled_capacity=%lld\n",
|
|
ppp_data.entitlement);
|
|
seq_printf(m, "group=%d\n", ppp_data.group_num);
|
|
seq_printf(m, "system_active_processors=%d\n",
|
|
ppp_data.active_system_procs);
|
|
|
|
/* pool related entries are apropriate for shared configs */
|
|
if (lppaca[0].shared_proc) {
|
|
unsigned long pool_idle_time, pool_procs;
|
|
|
|
seq_printf(m, "pool=%d\n", ppp_data.pool_num);
|
|
|
|
/* report pool_capacity in percentage */
|
|
seq_printf(m, "pool_capacity=%d\n",
|
|
ppp_data.active_procs_in_pool * 100);
|
|
|
|
h_pic(&pool_idle_time, &pool_procs);
|
|
seq_printf(m, "pool_idle_time=%ld\n", pool_idle_time);
|
|
seq_printf(m, "pool_num_procs=%ld\n", pool_procs);
|
|
}
|
|
|
|
seq_printf(m, "unallocated_capacity_weight=%d\n",
|
|
ppp_data.unallocated_weight);
|
|
seq_printf(m, "capacity_weight=%d\n", ppp_data.weight);
|
|
seq_printf(m, "capped=%d\n", ppp_data.capped);
|
|
seq_printf(m, "unallocated_capacity=%lld\n",
|
|
ppp_data.unallocated_entitlement);
|
|
}
|
|
|
|
/**
|
|
* parse_mpp_data
|
|
* Parse out data returned from h_get_mpp
|
|
*/
|
|
static void parse_mpp_data(struct seq_file *m)
|
|
{
|
|
struct hvcall_mpp_data mpp_data;
|
|
int rc;
|
|
|
|
rc = h_get_mpp(&mpp_data);
|
|
if (rc)
|
|
return;
|
|
|
|
seq_printf(m, "entitled_memory=%ld\n", mpp_data.entitled_mem);
|
|
|
|
if (mpp_data.mapped_mem != -1)
|
|
seq_printf(m, "mapped_entitled_memory=%ld\n",
|
|
mpp_data.mapped_mem);
|
|
|
|
seq_printf(m, "entitled_memory_group_number=%d\n", mpp_data.group_num);
|
|
seq_printf(m, "entitled_memory_pool_number=%d\n", mpp_data.pool_num);
|
|
|
|
seq_printf(m, "entitled_memory_weight=%d\n", mpp_data.mem_weight);
|
|
seq_printf(m, "unallocated_entitled_memory_weight=%d\n",
|
|
mpp_data.unallocated_mem_weight);
|
|
seq_printf(m, "unallocated_io_mapping_entitlement=%ld\n",
|
|
mpp_data.unallocated_entitlement);
|
|
|
|
if (mpp_data.pool_size != -1)
|
|
seq_printf(m, "entitled_memory_pool_size=%ld bytes\n",
|
|
mpp_data.pool_size);
|
|
|
|
seq_printf(m, "entitled_memory_loan_request=%ld\n",
|
|
mpp_data.loan_request);
|
|
|
|
seq_printf(m, "backing_memory=%ld bytes\n", mpp_data.backing_mem);
|
|
}
|
|
|
|
#define SPLPAR_CHARACTERISTICS_TOKEN 20
|
|
#define SPLPAR_MAXLENGTH 1026*(sizeof(char))
|
|
|
|
/*
|
|
* parse_system_parameter_string()
|
|
* Retrieve the potential_processors, max_entitled_capacity and friends
|
|
* through the get-system-parameter rtas call. Replace keyword strings as
|
|
* necessary.
|
|
*/
|
|
static void parse_system_parameter_string(struct seq_file *m)
|
|
{
|
|
int call_status;
|
|
|
|
unsigned char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
|
|
if (!local_buffer) {
|
|
printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
|
|
__FILE__, __func__, __LINE__);
|
|
return;
|
|
}
|
|
|
|
spin_lock(&rtas_data_buf_lock);
|
|
memset(rtas_data_buf, 0, SPLPAR_MAXLENGTH);
|
|
call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1,
|
|
NULL,
|
|
SPLPAR_CHARACTERISTICS_TOKEN,
|
|
__pa(rtas_data_buf),
|
|
RTAS_DATA_BUF_SIZE);
|
|
memcpy(local_buffer, rtas_data_buf, SPLPAR_MAXLENGTH);
|
|
spin_unlock(&rtas_data_buf_lock);
|
|
|
|
if (call_status != 0) {
|
|
printk(KERN_INFO
|
|
"%s %s Error calling get-system-parameter (0x%x)\n",
|
|
__FILE__, __func__, call_status);
|
|
} else {
|
|
int splpar_strlen;
|
|
int idx, w_idx;
|
|
char *workbuffer = kzalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
|
|
if (!workbuffer) {
|
|
printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
|
|
__FILE__, __func__, __LINE__);
|
|
kfree(local_buffer);
|
|
return;
|
|
}
|
|
#ifdef LPARCFG_DEBUG
|
|
printk(KERN_INFO "success calling get-system-parameter \n");
|
|
#endif
|
|
splpar_strlen = local_buffer[0] * 256 + local_buffer[1];
|
|
local_buffer += 2; /* step over strlen value */
|
|
|
|
w_idx = 0;
|
|
idx = 0;
|
|
while ((*local_buffer) && (idx < splpar_strlen)) {
|
|
workbuffer[w_idx++] = local_buffer[idx++];
|
|
if ((local_buffer[idx] == ',')
|
|
|| (local_buffer[idx] == '\0')) {
|
|
workbuffer[w_idx] = '\0';
|
|
if (w_idx) {
|
|
/* avoid the empty string */
|
|
seq_printf(m, "%s\n", workbuffer);
|
|
}
|
|
memset(workbuffer, 0, SPLPAR_MAXLENGTH);
|
|
idx++; /* skip the comma */
|
|
w_idx = 0;
|
|
} else if (local_buffer[idx] == '=') {
|
|
/* code here to replace workbuffer contents
|
|
with different keyword strings */
|
|
if (0 == strcmp(workbuffer, "MaxEntCap")) {
|
|
strcpy(workbuffer,
|
|
"partition_max_entitled_capacity");
|
|
w_idx = strlen(workbuffer);
|
|
}
|
|
if (0 == strcmp(workbuffer, "MaxPlatProcs")) {
|
|
strcpy(workbuffer,
|
|
"system_potential_processors");
|
|
w_idx = strlen(workbuffer);
|
|
}
|
|
}
|
|
}
|
|
kfree(workbuffer);
|
|
local_buffer -= 2; /* back up over strlen value */
|
|
}
|
|
kfree(local_buffer);
|
|
}
|
|
|
|
/* Return the number of processors in the system.
|
|
* This function reads through the device tree and counts
|
|
* the virtual processors, this does not include threads.
|
|
*/
|
|
static int lparcfg_count_active_processors(void)
|
|
{
|
|
struct device_node *cpus_dn = NULL;
|
|
int count = 0;
|
|
|
|
while ((cpus_dn = of_find_node_by_type(cpus_dn, "cpu"))) {
|
|
#ifdef LPARCFG_DEBUG
|
|
printk(KERN_ERR "cpus_dn %p \n", cpus_dn);
|
|
#endif
|
|
count++;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
static void pseries_cmo_data(struct seq_file *m)
|
|
{
|
|
int cpu;
|
|
unsigned long cmo_faults = 0;
|
|
unsigned long cmo_fault_time = 0;
|
|
|
|
seq_printf(m, "cmo_enabled=%d\n", firmware_has_feature(FW_FEATURE_CMO));
|
|
|
|
if (!firmware_has_feature(FW_FEATURE_CMO))
|
|
return;
|
|
|
|
for_each_possible_cpu(cpu) {
|
|
cmo_faults += lppaca[cpu].cmo_faults;
|
|
cmo_fault_time += lppaca[cpu].cmo_fault_time;
|
|
}
|
|
|
|
seq_printf(m, "cmo_faults=%lu\n", cmo_faults);
|
|
seq_printf(m, "cmo_fault_time_usec=%lu\n",
|
|
cmo_fault_time / tb_ticks_per_usec);
|
|
seq_printf(m, "cmo_primary_psp=%d\n", cmo_get_primary_psp());
|
|
seq_printf(m, "cmo_secondary_psp=%d\n", cmo_get_secondary_psp());
|
|
seq_printf(m, "cmo_page_size=%lu\n", cmo_get_page_size());
|
|
}
|
|
|
|
static void splpar_dispatch_data(struct seq_file *m)
|
|
{
|
|
int cpu;
|
|
unsigned long dispatches = 0;
|
|
unsigned long dispatch_dispersions = 0;
|
|
|
|
for_each_possible_cpu(cpu) {
|
|
dispatches += lppaca[cpu].yield_count;
|
|
dispatch_dispersions += lppaca[cpu].dispersion_count;
|
|
}
|
|
|
|
seq_printf(m, "dispatches=%lu\n", dispatches);
|
|
seq_printf(m, "dispatch_dispersions=%lu\n", dispatch_dispersions);
|
|
}
|
|
|
|
static int pseries_lparcfg_data(struct seq_file *m, void *v)
|
|
{
|
|
int partition_potential_processors;
|
|
int partition_active_processors;
|
|
struct device_node *rtas_node;
|
|
const int *lrdrp = NULL;
|
|
|
|
rtas_node = of_find_node_by_path("/rtas");
|
|
if (rtas_node)
|
|
lrdrp = of_get_property(rtas_node, "ibm,lrdr-capacity", NULL);
|
|
|
|
if (lrdrp == NULL) {
|
|
partition_potential_processors = vdso_data->processorCount;
|
|
} else {
|
|
partition_potential_processors = *(lrdrp + 4);
|
|
}
|
|
of_node_put(rtas_node);
|
|
|
|
partition_active_processors = lparcfg_count_active_processors();
|
|
|
|
if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
|
|
/* this call handles the ibm,get-system-parameter contents */
|
|
parse_system_parameter_string(m);
|
|
parse_ppp_data(m);
|
|
parse_mpp_data(m);
|
|
pseries_cmo_data(m);
|
|
splpar_dispatch_data(m);
|
|
|
|
seq_printf(m, "purr=%ld\n", get_purr());
|
|
} else { /* non SPLPAR case */
|
|
|
|
seq_printf(m, "system_active_processors=%d\n",
|
|
partition_potential_processors);
|
|
|
|
seq_printf(m, "system_potential_processors=%d\n",
|
|
partition_potential_processors);
|
|
|
|
seq_printf(m, "partition_max_entitled_capacity=%d\n",
|
|
partition_potential_processors * 100);
|
|
|
|
seq_printf(m, "partition_entitled_capacity=%d\n",
|
|
partition_active_processors * 100);
|
|
}
|
|
|
|
seq_printf(m, "partition_active_processors=%d\n",
|
|
partition_active_processors);
|
|
|
|
seq_printf(m, "partition_potential_processors=%d\n",
|
|
partition_potential_processors);
|
|
|
|
seq_printf(m, "shared_processor_mode=%d\n", lppaca[0].shared_proc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t update_ppp(u64 *entitlement, u8 *weight)
|
|
{
|
|
struct hvcall_ppp_data ppp_data;
|
|
u8 new_weight;
|
|
u64 new_entitled;
|
|
ssize_t retval;
|
|
|
|
/* Get our current parameters */
|
|
retval = h_get_ppp(&ppp_data);
|
|
if (retval)
|
|
return retval;
|
|
|
|
if (entitlement) {
|
|
new_weight = ppp_data.weight;
|
|
new_entitled = *entitlement;
|
|
} else if (weight) {
|
|
new_weight = *weight;
|
|
new_entitled = ppp_data.entitlement;
|
|
} else
|
|
return -EINVAL;
|
|
|
|
pr_debug("%s: current_entitled = %llu, current_weight = %u\n",
|
|
__func__, ppp_data.entitlement, ppp_data.weight);
|
|
|
|
pr_debug("%s: new_entitled = %llu, new_weight = %u\n",
|
|
__func__, new_entitled, new_weight);
|
|
|
|
retval = plpar_hcall_norets(H_SET_PPP, new_entitled, new_weight);
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* update_mpp
|
|
*
|
|
* Update the memory entitlement and weight for the partition. Caller must
|
|
* specify either a new entitlement or weight, not both, to be updated
|
|
* since the h_set_mpp call takes both entitlement and weight as parameters.
|
|
*/
|
|
static ssize_t update_mpp(u64 *entitlement, u8 *weight)
|
|
{
|
|
struct hvcall_mpp_data mpp_data;
|
|
u64 new_entitled;
|
|
u8 new_weight;
|
|
ssize_t rc;
|
|
|
|
if (entitlement) {
|
|
/* Check with vio to ensure the new memory entitlement
|
|
* can be handled.
|
|
*/
|
|
rc = vio_cmo_entitlement_update(*entitlement);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
|
|
rc = h_get_mpp(&mpp_data);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (entitlement) {
|
|
new_weight = mpp_data.mem_weight;
|
|
new_entitled = *entitlement;
|
|
} else if (weight) {
|
|
new_weight = *weight;
|
|
new_entitled = mpp_data.entitled_mem;
|
|
} else
|
|
return -EINVAL;
|
|
|
|
pr_debug("%s: current_entitled = %lu, current_weight = %u\n",
|
|
__func__, mpp_data.entitled_mem, mpp_data.mem_weight);
|
|
|
|
pr_debug("%s: new_entitled = %llu, new_weight = %u\n",
|
|
__func__, new_entitled, new_weight);
|
|
|
|
rc = plpar_hcall_norets(H_SET_MPP, new_entitled, new_weight);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Interface for changing system parameters (variable capacity weight
|
|
* and entitled capacity). Format of input is "param_name=value";
|
|
* anything after value is ignored. Valid parameters at this time are
|
|
* "partition_entitled_capacity" and "capacity_weight". We use
|
|
* H_SET_PPP to alter parameters.
|
|
*
|
|
* This function should be invoked only on systems with
|
|
* FW_FEATURE_SPLPAR.
|
|
*/
|
|
static ssize_t lparcfg_write(struct file *file, const char __user * buf,
|
|
size_t count, loff_t * off)
|
|
{
|
|
int kbuf_sz = 64;
|
|
char kbuf[kbuf_sz];
|
|
char *tmp;
|
|
u64 new_entitled, *new_entitled_ptr = &new_entitled;
|
|
u8 new_weight, *new_weight_ptr = &new_weight;
|
|
ssize_t retval;
|
|
|
|
if (!firmware_has_feature(FW_FEATURE_SPLPAR) ||
|
|
firmware_has_feature(FW_FEATURE_ISERIES))
|
|
return -EINVAL;
|
|
|
|
if (count > kbuf_sz)
|
|
return -EINVAL;
|
|
|
|
if (copy_from_user(kbuf, buf, count))
|
|
return -EFAULT;
|
|
|
|
kbuf[count - 1] = '\0';
|
|
tmp = strchr(kbuf, '=');
|
|
if (!tmp)
|
|
return -EINVAL;
|
|
|
|
*tmp++ = '\0';
|
|
|
|
if (!strcmp(kbuf, "partition_entitled_capacity")) {
|
|
char *endp;
|
|
*new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10);
|
|
if (endp == tmp)
|
|
return -EINVAL;
|
|
|
|
retval = update_ppp(new_entitled_ptr, NULL);
|
|
} else if (!strcmp(kbuf, "capacity_weight")) {
|
|
char *endp;
|
|
*new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10);
|
|
if (endp == tmp)
|
|
return -EINVAL;
|
|
|
|
retval = update_ppp(NULL, new_weight_ptr);
|
|
} else if (!strcmp(kbuf, "entitled_memory")) {
|
|
char *endp;
|
|
*new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10);
|
|
if (endp == tmp)
|
|
return -EINVAL;
|
|
|
|
retval = update_mpp(new_entitled_ptr, NULL);
|
|
} else if (!strcmp(kbuf, "entitled_memory_weight")) {
|
|
char *endp;
|
|
*new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10);
|
|
if (endp == tmp)
|
|
return -EINVAL;
|
|
|
|
retval = update_mpp(NULL, new_weight_ptr);
|
|
} else
|
|
return -EINVAL;
|
|
|
|
if (retval == H_SUCCESS || retval == H_CONSTRAINED) {
|
|
retval = count;
|
|
} else if (retval == H_BUSY) {
|
|
retval = -EBUSY;
|
|
} else if (retval == H_HARDWARE) {
|
|
retval = -EIO;
|
|
} else if (retval == H_PARAMETER) {
|
|
retval = -EINVAL;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
#else /* CONFIG_PPC_PSERIES */
|
|
|
|
static int pseries_lparcfg_data(struct seq_file *m, void *v)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t lparcfg_write(struct file *file, const char __user * buf,
|
|
size_t count, loff_t * off)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
#endif /* CONFIG_PPC_PSERIES */
|
|
|
|
static int lparcfg_data(struct seq_file *m, void *v)
|
|
{
|
|
struct device_node *rootdn;
|
|
const char *model = "";
|
|
const char *system_id = "";
|
|
const char *tmp;
|
|
const unsigned int *lp_index_ptr;
|
|
unsigned int lp_index = 0;
|
|
|
|
seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);
|
|
|
|
rootdn = of_find_node_by_path("/");
|
|
if (rootdn) {
|
|
tmp = of_get_property(rootdn, "model", NULL);
|
|
if (tmp) {
|
|
model = tmp;
|
|
/* Skip "IBM," - see platforms/iseries/dt.c */
|
|
if (firmware_has_feature(FW_FEATURE_ISERIES))
|
|
model += 4;
|
|
}
|
|
tmp = of_get_property(rootdn, "system-id", NULL);
|
|
if (tmp) {
|
|
system_id = tmp;
|
|
/* Skip "IBM," - see platforms/iseries/dt.c */
|
|
if (firmware_has_feature(FW_FEATURE_ISERIES))
|
|
system_id += 4;
|
|
}
|
|
lp_index_ptr = of_get_property(rootdn, "ibm,partition-no",
|
|
NULL);
|
|
if (lp_index_ptr)
|
|
lp_index = *lp_index_ptr;
|
|
of_node_put(rootdn);
|
|
}
|
|
seq_printf(m, "serial_number=%s\n", system_id);
|
|
seq_printf(m, "system_type=%s\n", model);
|
|
seq_printf(m, "partition_id=%d\n", (int)lp_index);
|
|
|
|
if (firmware_has_feature(FW_FEATURE_ISERIES))
|
|
return iseries_lparcfg_data(m, v);
|
|
return pseries_lparcfg_data(m, v);
|
|
}
|
|
|
|
static int lparcfg_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, lparcfg_data, NULL);
|
|
}
|
|
|
|
static const struct file_operations lparcfg_fops = {
|
|
.owner = THIS_MODULE,
|
|
.read = seq_read,
|
|
.write = lparcfg_write,
|
|
.open = lparcfg_open,
|
|
.release = single_release,
|
|
};
|
|
|
|
static int __init lparcfg_init(void)
|
|
{
|
|
struct proc_dir_entry *ent;
|
|
mode_t mode = S_IRUSR | S_IRGRP | S_IROTH;
|
|
|
|
/* Allow writing if we have FW_FEATURE_SPLPAR */
|
|
if (firmware_has_feature(FW_FEATURE_SPLPAR) &&
|
|
!firmware_has_feature(FW_FEATURE_ISERIES))
|
|
mode |= S_IWUSR;
|
|
|
|
ent = proc_create("ppc64/lparcfg", mode, NULL, &lparcfg_fops);
|
|
if (!ent) {
|
|
printk(KERN_ERR "Failed to create ppc64/lparcfg\n");
|
|
return -EIO;
|
|
}
|
|
|
|
proc_ppc64_lparcfg = ent;
|
|
return 0;
|
|
}
|
|
|
|
static void __exit lparcfg_cleanup(void)
|
|
{
|
|
if (proc_ppc64_lparcfg)
|
|
remove_proc_entry("lparcfg", proc_ppc64_lparcfg->parent);
|
|
}
|
|
|
|
module_init(lparcfg_init);
|
|
module_exit(lparcfg_cleanup);
|
|
MODULE_DESCRIPTION("Interface for LPAR configuration data");
|
|
MODULE_AUTHOR("Dave Engebretsen");
|
|
MODULE_LICENSE("GPL");
|