diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/lparcfg.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/lparcfg.c | 185 |
1 files changed, 82 insertions, 103 deletions
diff --git a/arch/powerpc/platforms/pseries/lparcfg.c b/arch/powerpc/platforms/pseries/lparcfg.c index 63fd925ccbb8..6554537984fb 100644 --- a/arch/powerpc/platforms/pseries/lparcfg.c +++ b/arch/powerpc/platforms/pseries/lparcfg.c @@ -19,6 +19,7 @@ #include <linux/errno.h> #include <linux/proc_fs.h> #include <linux/init.h> +#include <asm/papr-sysparm.h> #include <linux/seq_file.h> #include <linux/slab.h> #include <linux/uaccess.h> @@ -28,7 +29,6 @@ #include <asm/firmware.h> #include <asm/rtas.h> #include <asm/time.h> -#include <asm/vdso_datapage.h> #include <asm/vio.h> #include <asm/mmu.h> #include <asm/machdep.h> @@ -78,6 +78,8 @@ struct hvcall_ppp_data { u8 capped; u8 weight; u8 unallocated_weight; + u8 resource_group_index; + u16 active_procs_in_resource_group; u16 active_procs_in_pool; u16 active_system_procs; u16 phys_platform_procs; @@ -86,7 +88,7 @@ struct hvcall_ppp_data { }; /* - * H_GET_PPP hcall returns info in 4 parms. + * H_GET_PPP hcall returns info in 5 parms. * entitled_capacity,unallocated_capacity, * aggregation, resource_capability). * @@ -94,11 +96,11 @@ struct hvcall_ppp_data { * R5 = Unallocated Processor Capacity Percentage. * R6 (AABBCCDDEEFFGGHH). * XXXX - reserved (0) - * XXXX - reserved (0) + * XXXX - Active Cores in Resource Group * XXXX - Group Number * XXXX - Pool Number. * R7 (IIJJKKLLMMNNOOPP). - * XX - reserved. (0) + * XX - Resource group Number * XX - bit 0-6 reserved (0). bit 7 is Capped indicator. * XX - variable processor Capacity Weight * XX - Unallocated Variable Processor Capacity Weight. @@ -112,17 +114,19 @@ struct hvcall_ppp_data { */ static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data) { - unsigned long rc; - unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; + unsigned long retbuf[PLPAR_HCALL9_BUFSIZE] = {0}; + long rc; rc = plpar_hcall9(H_GET_PPP, retbuf); ppp_data->entitlement = retbuf[0]; ppp_data->unallocated_entitlement = retbuf[1]; + ppp_data->active_procs_in_resource_group = (retbuf[2] >> 4 * 8) & 0xffff; ppp_data->group_num = (retbuf[2] >> 2 * 8) & 0xffff; ppp_data->pool_num = retbuf[2] & 0xffff; + ppp_data->resource_group_index = (retbuf[3] >> 7 * 8) & 0xff; 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; @@ -169,20 +173,24 @@ out: kfree(buf); } -static unsigned h_pic(unsigned long *pool_idle_time, - unsigned long *num_procs) +static long h_pic(unsigned long *pool_idle_time, + unsigned long *num_procs) { - unsigned long rc; - unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; + long rc; + unsigned long retbuf[PLPAR_HCALL_BUFSIZE] = {0}; rc = plpar_hcall(H_PIC, retbuf); - *pool_idle_time = retbuf[0]; - *num_procs = retbuf[1]; + if (pool_idle_time) + *pool_idle_time = retbuf[0]; + if (num_procs) + *num_procs = retbuf[1]; return rc; } +unsigned long boot_pool_idle_time; + /* * parse_ppp_data * Parse out the data returned from h_get_ppp and h_pic @@ -192,7 +200,7 @@ static void parse_ppp_data(struct seq_file *m) struct hvcall_ppp_data ppp_data; struct device_node *root; const __be32 *perf_level; - int rc; + long rc; rc = h_get_ppp(&ppp_data); if (rc) @@ -205,7 +213,7 @@ static void parse_ppp_data(struct seq_file *m) ppp_data.active_system_procs); /* pool related entries are appropriate for shared configs */ - if (lppaca_shared_proc(get_lppaca())) { + if (lppaca_shared_proc()) { unsigned long pool_idle_time, pool_procs; seq_printf(m, "pool=%d\n", ppp_data.pool_num); @@ -214,9 +222,15 @@ static void parse_ppp_data(struct seq_file *m) 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); + /* In case h_pic call is not successful, this would result in + * APP values being wrong in tools like lparstat. + */ + + if (h_pic(&pool_idle_time, &pool_procs) == H_SUCCESS) { + seq_printf(m, "pool_idle_time=%ld\n", pool_idle_time); + seq_printf(m, "pool_num_procs=%ld\n", pool_procs); + seq_printf(m, "boot_pool_idle_time=%ld\n", boot_pool_idle_time); + } } seq_printf(m, "unallocated_capacity_weight=%d\n", @@ -226,6 +240,13 @@ static void parse_ppp_data(struct seq_file *m) seq_printf(m, "unallocated_capacity=%lld\n", ppp_data.unallocated_entitlement); + if (ppp_data.active_procs_in_resource_group) { + seq_printf(m, "resource_group_number=%d\n", + ppp_data.resource_group_index); + seq_printf(m, "resource_group_active_processors=%d\n", + ppp_data.active_procs_in_resource_group); + } + /* The last bits of information returned from h_get_ppp are only * valid if the ibm,partition-performance-parameters-level * property is >= 1. @@ -312,16 +333,6 @@ static void parse_mpp_x_data(struct seq_file *m) } /* - * PAPR defines, in section "7.3.16 System Parameters Option", the token 55 to - * read the LPAR name, and the largest output data to 4000 + 2 bytes length. - */ -#define SPLPAR_LPAR_NAME_TOKEN 55 -#define GET_SYS_PARM_BUF_SIZE 4002 -#if GET_SYS_PARM_BUF_SIZE > RTAS_DATA_BUF_SIZE -#error "GET_SYS_PARM_BUF_SIZE is larger than RTAS_DATA_BUF_SIZE" -#endif - -/* * Read the lpar name using the RTAS ibm,get-system-parameter call. * * The name read through this call is updated if changes are made by the end @@ -332,46 +343,19 @@ static void parse_mpp_x_data(struct seq_file *m) */ static int read_rtas_lpar_name(struct seq_file *m) { - int rc, len, token; - union { - char raw_buffer[GET_SYS_PARM_BUF_SIZE]; - struct { - __be16 len; - char name[GET_SYS_PARM_BUF_SIZE-2]; - }; - } *local_buffer; - - token = rtas_token("ibm,get-system-parameter"); - if (token == RTAS_UNKNOWN_SERVICE) - return -EINVAL; + struct papr_sysparm_buf *buf; + int err; - local_buffer = kmalloc(sizeof(*local_buffer), GFP_KERNEL); - if (!local_buffer) + buf = papr_sysparm_buf_alloc(); + if (!buf) return -ENOMEM; - do { - spin_lock(&rtas_data_buf_lock); - memset(rtas_data_buf, 0, sizeof(*local_buffer)); - rc = rtas_call(token, 3, 1, NULL, SPLPAR_LPAR_NAME_TOKEN, - __pa(rtas_data_buf), sizeof(*local_buffer)); - if (!rc) - memcpy(local_buffer->raw_buffer, rtas_data_buf, - sizeof(local_buffer->raw_buffer)); - spin_unlock(&rtas_data_buf_lock); - } while (rtas_busy_delay(rc)); - - if (!rc) { - /* Force end of string */ - len = min((int) be16_to_cpu(local_buffer->len), - (int) sizeof(local_buffer->name)-1); - local_buffer->name[len] = '\0'; - - seq_printf(m, "partition_name=%s\n", local_buffer->name); - } else - rc = -ENODATA; + err = papr_sysparm_get(PAPR_SYSPARM_LPAR_NAME, buf); + if (!err) + seq_printf(m, "partition_name=%s\n", buf->val); - kfree(local_buffer); - return rc; + papr_sysparm_buf_free(buf); + return err; } /* @@ -382,9 +366,13 @@ static int read_rtas_lpar_name(struct seq_file *m) */ static int read_dt_lpar_name(struct seq_file *m) { + struct device_node *root = of_find_node_by_path("/"); const char *name; + int ret; - if (of_property_read_string(of_root, "ibm,partition-name", &name)) + ret = of_property_read_string(root, "ibm,partition-name", &name); + of_node_put(root); + if (ret) return -ENOENT; seq_printf(m, "partition_name=%s\n", name); @@ -393,11 +381,10 @@ static int read_dt_lpar_name(struct seq_file *m) static void read_lpar_name(struct seq_file *m) { - if (read_rtas_lpar_name(m) && read_dt_lpar_name(m)) - pr_err_once("Error can't get the LPAR name"); + if (read_rtas_lpar_name(m)) + read_dt_lpar_name(m); } -#define SPLPAR_CHARACTERISTICS_TOKEN 20 #define SPLPAR_MAXLENGTH 1026*(sizeof(char)) /* @@ -408,45 +395,25 @@ static void read_lpar_name(struct seq_file *m) */ static void parse_system_parameter_string(struct seq_file *m) { - int call_status; + struct papr_sysparm_buf *buf; - 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__); + buf = papr_sysparm_buf_alloc(); + if (!buf) 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); - local_buffer[SPLPAR_MAXLENGTH - 1] = '\0'; - 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); + if (papr_sysparm_get(PAPR_SYSPARM_SHARED_PROC_LPAR_ATTRS, buf)) { + goto out_free; } else { + const char *local_buffer; 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 */ + + if (!workbuffer) + goto out_free; + + splpar_strlen = be16_to_cpu(buf->len); + local_buffer = buf->val; w_idx = 0; idx = 0; @@ -480,7 +447,8 @@ static void parse_system_parameter_string(struct seq_file *m) kfree(workbuffer); local_buffer -= 2; /* back up over strlen value */ } - kfree(local_buffer); +out_free: + papr_sysparm_buf_free(buf); } /* Return the number of processors in the system. @@ -572,7 +540,7 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v) lrdrp = of_get_property(rtas_node, "ibm,lrdr-capacity", NULL); if (lrdrp == NULL) { - partition_potential_processors = vdso_data->processorCount; + partition_potential_processors = num_possible_cpus(); } else { partition_potential_processors = be32_to_cpup(lrdrp + 4); } @@ -595,7 +563,7 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v) } else { /* non SPLPAR case */ seq_printf(m, "system_active_processors=%d\n", - partition_potential_processors); + partition_active_processors); seq_printf(m, "system_potential_processors=%d\n", partition_potential_processors); @@ -616,7 +584,7 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v) partition_potential_processors); seq_printf(m, "shared_processor_mode=%d\n", - lppaca_shared_proc(get_lppaca())); + lppaca_shared_proc()); #ifdef CONFIG_PPC_64S_HASH_MMU if (!radix_enabled()) @@ -844,6 +812,7 @@ static const struct proc_ops lparcfg_proc_ops = { static int __init lparcfg_init(void) { umode_t mode = 0444; + long retval; /* Allow writing if we have FW_FEATURE_SPLPAR */ if (firmware_has_feature(FW_FEATURE_SPLPAR)) @@ -853,6 +822,16 @@ static int __init lparcfg_init(void) printk(KERN_ERR "Failed to create powerpc/lparcfg\n"); return -EIO; } + + /* If this call fails, it would result in APP values + * being wrong for since boot reports of lparstat + */ + retval = h_pic(&boot_pool_idle_time, NULL); + + if (retval != H_SUCCESS) + pr_debug("H_PIC failed during lparcfg init retval: %ld\n", + retval); + return 0; } machine_device_initcall(pseries, lparcfg_init); |