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-rw-r--r--arch/s390/oprofile/backtrace.c8
-rw-r--r--arch/s390/oprofile/hwsampler.c108
-rw-r--r--arch/s390/oprofile/hwsampler.h52
-rw-r--r--arch/s390/oprofile/init.c75
-rw-r--r--arch/s390/oprofile/op_counter.h6
5 files changed, 74 insertions, 175 deletions
diff --git a/arch/s390/oprofile/backtrace.c b/arch/s390/oprofile/backtrace.c
index bc4b84a35ca..8a6811b2cdb 100644
--- a/arch/s390/oprofile/backtrace.c
+++ b/arch/s390/oprofile/backtrace.c
@@ -1,8 +1,6 @@
-/**
- * arch/s390/oprofile/backtrace.c
- *
+/*
* S390 Version
- * Copyright (C) 2005 IBM Corporation, IBM Deutschland Entwicklung GmbH.
+ * Copyright IBM Corp. 2005
* Author(s): Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
*/
@@ -60,7 +58,7 @@ void s390_backtrace(struct pt_regs * const regs, unsigned int depth)
unsigned long head;
struct stack_frame* head_sf;
- if (user_mode (regs))
+ if (user_mode(regs))
return;
head = regs->gprs[15];
diff --git a/arch/s390/oprofile/hwsampler.c b/arch/s390/oprofile/hwsampler.c
index a4a89fa980d..e53c6f26880 100644
--- a/arch/s390/oprofile/hwsampler.c
+++ b/arch/s390/oprofile/hwsampler.c
@@ -1,6 +1,4 @@
-/**
- * arch/s390/oprofile/hwsampler.c
- *
+/*
* Copyright IBM Corp. 2010
* Author: Heinz Graalfs <graalfs@de.ibm.com>
*/
@@ -28,9 +26,6 @@
#define MAX_NUM_SDB 511
#define MIN_NUM_SDB 1
-#define ALERT_REQ_MASK 0x4000000000000000ul
-#define BUFFER_FULL_MASK 0x8000000000000000ul
-
DECLARE_PER_CPU(struct hws_cpu_buffer, sampler_cpu_buffer);
struct hws_execute_parms {
@@ -46,6 +41,7 @@ static DEFINE_MUTEX(hws_sem_oom);
static unsigned char hws_flush_all;
static unsigned int hws_oom;
+static unsigned int hws_alert;
static struct workqueue_struct *hws_wq;
static unsigned int hws_state;
@@ -67,43 +63,6 @@ static unsigned long interval;
static unsigned long min_sampler_rate;
static unsigned long max_sampler_rate;
-static int ssctl(void *buffer)
-{
- int cc;
-
- /* set in order to detect a program check */
- cc = 1;
-
- asm volatile(
- "0: .insn s,0xB2870000,0(%1)\n"
- "1: ipm %0\n"
- " srl %0,28\n"
- "2:\n"
- EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
- : "+d" (cc), "+a" (buffer)
- : "m" (*((struct hws_ssctl_request_block *)buffer))
- : "cc", "memory");
-
- return cc ? -EINVAL : 0 ;
-}
-
-static int qsi(void *buffer)
-{
- int cc;
- cc = 1;
-
- asm volatile(
- "0: .insn s,0xB2860000,0(%1)\n"
- "1: lhi %0,0\n"
- "2:\n"
- EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
- : "=d" (cc), "+a" (buffer)
- : "m" (*((struct hws_qsi_info_block *)buffer))
- : "cc", "memory");
-
- return cc ? -EINVAL : 0;
-}
-
static void execute_qsi(void *parms)
{
struct hws_execute_parms *ep = parms;
@@ -115,7 +74,7 @@ static void execute_ssctl(void *parms)
{
struct hws_execute_parms *ep = parms;
- ep->rc = ssctl(ep->buffer);
+ ep->rc = lsctl(ep->buffer);
}
static int smp_ctl_ssctl_stop(int cpu)
@@ -216,17 +175,6 @@ static int smp_ctl_qsi(int cpu)
return ep.rc;
}
-static inline unsigned long *trailer_entry_ptr(unsigned long v)
-{
- void *ret;
-
- ret = (void *)v;
- ret += PAGE_SIZE;
- ret -= sizeof(struct hws_trailer_entry);
-
- return (unsigned long *) ret;
-}
-
static void hws_ext_handler(struct ext_code ext_code,
unsigned int param32, unsigned long param64)
{
@@ -235,7 +183,10 @@ static void hws_ext_handler(struct ext_code ext_code,
if (!(param32 & CPU_MF_INT_SF_MASK))
return;
- kstat_cpu(smp_processor_id()).irqs[EXTINT_CMS]++;
+ if (!hws_alert)
+ return;
+
+ inc_irq_stat(IRQEXT_CMS);
atomic_xchg(&cb->ext_params, atomic_read(&cb->ext_params) | param32);
if (hws_wq)
@@ -258,23 +209,11 @@ static void init_all_cpu_buffers(void)
}
}
-static int is_link_entry(unsigned long *s)
-{
- return *s & 0x1ul ? 1 : 0;
-}
-
-static unsigned long *get_next_sdbt(unsigned long *s)
+static void prepare_cpu_buffers(void)
{
- return (unsigned long *) (*s & ~0x1ul);
-}
-
-static int prepare_cpu_buffers(void)
-{
- int cpu;
- int rc;
struct hws_cpu_buffer *cb;
+ int cpu;
- rc = 0;
for_each_online_cpu(cpu) {
cb = &per_cpu(sampler_cpu_buffer, cpu);
atomic_set(&cb->ext_params, 0);
@@ -289,8 +228,6 @@ static int prepare_cpu_buffers(void)
cb->oom = 0;
cb->stop_mode = 0;
}
-
- return rc;
}
/*
@@ -355,7 +292,7 @@ static int allocate_sdbt(int cpu)
}
*sdbt = sdb;
trailer = trailer_entry_ptr(*sdbt);
- *trailer = ALERT_REQ_MASK;
+ *trailer = SDB_TE_ALERT_REQ_MASK;
sdbt++;
mutex_unlock(&hws_sem_oom);
}
@@ -831,7 +768,7 @@ static void worker_on_interrupt(unsigned int cpu)
trailer = trailer_entry_ptr(*sdbt);
/* leave loop if no more work to do */
- if (!(*trailer & BUFFER_FULL_MASK)) {
+ if (!(*trailer & SDB_TE_BUFFER_FULL_MASK)) {
done = 1;
if (!hws_flush_all)
continue;
@@ -858,7 +795,7 @@ static void worker_on_interrupt(unsigned int cpu)
static void add_samples_to_oprofile(unsigned int cpu, unsigned long *sdbt,
unsigned long *dear)
{
- struct hws_data_entry *sample_data_ptr;
+ struct hws_basic_entry *sample_data_ptr;
unsigned long *trailer;
trailer = trailer_entry_ptr(*sdbt);
@@ -868,7 +805,7 @@ static void add_samples_to_oprofile(unsigned int cpu, unsigned long *sdbt,
trailer = dear;
}
- sample_data_ptr = (struct hws_data_entry *)(*sdbt);
+ sample_data_ptr = (struct hws_basic_entry *)(*sdbt);
while ((unsigned long *)sample_data_ptr < trailer) {
struct pt_regs *regs = NULL;
@@ -1003,7 +940,8 @@ int hwsampler_deallocate(void)
if (hws_state != HWS_STOPPED)
goto deallocate_exit;
- measurement_alert_subclass_unregister();
+ irq_subclass_unregister(IRQ_SUBCLASS_MEASUREMENT_ALERT);
+ hws_alert = 0;
deallocate_sdbt();
hws_state = HWS_DEALLOCATED;
@@ -1091,7 +1029,7 @@ int hwsampler_setup(void)
max_sampler_rate = cb->qsi.max_sampl_rate;
}
}
- register_external_interrupt(0x1407, hws_ext_handler);
+ register_external_irq(EXT_IRQ_MEASURE_ALERT, hws_ext_handler);
hws_state = HWS_DEALLOCATED;
rc = 0;
@@ -1117,7 +1055,8 @@ int hwsampler_shutdown(void)
mutex_lock(&hws_sem);
if (hws_state == HWS_STOPPED) {
- measurement_alert_subclass_unregister();
+ irq_subclass_unregister(IRQ_SUBCLASS_MEASUREMENT_ALERT);
+ hws_alert = 0;
deallocate_sdbt();
}
if (hws_wq) {
@@ -1125,7 +1064,7 @@ int hwsampler_shutdown(void)
hws_wq = NULL;
}
- unregister_external_interrupt(0x1407, hws_ext_handler);
+ unregister_external_irq(EXT_IRQ_MEASURE_ALERT, hws_ext_handler);
hws_state = HWS_INIT;
rc = 0;
}
@@ -1164,9 +1103,7 @@ int hwsampler_start_all(unsigned long rate)
if (rc)
goto start_all_exit;
- rc = prepare_cpu_buffers();
- if (rc)
- goto start_all_exit;
+ prepare_cpu_buffers();
for_each_online_cpu(cpu) {
rc = start_sampling(cpu);
@@ -1192,7 +1129,8 @@ start_all_exit:
hws_oom = 1;
hws_flush_all = 0;
/* now let them in, 1407 CPUMF external interrupts */
- measurement_alert_subclass_register();
+ hws_alert = 1;
+ irq_subclass_register(IRQ_SUBCLASS_MEASUREMENT_ALERT);
return 0;
}
@@ -1212,7 +1150,7 @@ int hwsampler_stop_all(void)
rc = 0;
if (hws_state == HWS_INIT) {
mutex_unlock(&hws_sem);
- return rc;
+ return 0;
}
hws_state = HWS_STOPPING;
mutex_unlock(&hws_sem);
diff --git a/arch/s390/oprofile/hwsampler.h b/arch/s390/oprofile/hwsampler.h
index 1912f3bb190..a483d06f2fa 100644
--- a/arch/s390/oprofile/hwsampler.h
+++ b/arch/s390/oprofile/hwsampler.h
@@ -9,27 +9,7 @@
#define HWSAMPLER_H_
#include <linux/workqueue.h>
-
-struct hws_qsi_info_block /* QUERY SAMPLING information block */
-{ /* Bit(s) */
- unsigned int b0_13:14; /* 0-13: zeros */
- unsigned int as:1; /* 14: sampling authorisation control*/
- unsigned int b15_21:7; /* 15-21: zeros */
- unsigned int es:1; /* 22: sampling enable control */
- unsigned int b23_29:7; /* 23-29: zeros */
- unsigned int cs:1; /* 30: sampling activation control */
- unsigned int:1; /* 31: reserved */
- unsigned int bsdes:16; /* 4-5: size of sampling entry */
- unsigned int:16; /* 6-7: reserved */
- unsigned long min_sampl_rate; /* 8-15: minimum sampling interval */
- unsigned long max_sampl_rate; /* 16-23: maximum sampling interval*/
- unsigned long tear; /* 24-31: TEAR contents */
- unsigned long dear; /* 32-39: DEAR contents */
- unsigned int rsvrd0; /* 40-43: reserved */
- unsigned int cpu_speed; /* 44-47: CPU speed */
- unsigned long long rsvrd1; /* 48-55: reserved */
- unsigned long long rsvrd2; /* 56-63: reserved */
-};
+#include <asm/cpu_mf.h>
struct hws_ssctl_request_block /* SET SAMPLING CONTROLS req block */
{ /* bytes 0 - 7 Bit(s) */
@@ -68,36 +48,6 @@ struct hws_cpu_buffer {
unsigned int stop_mode:1;
};
-struct hws_data_entry {
- unsigned int def:16; /* 0-15 Data Entry Format */
- unsigned int R:4; /* 16-19 reserved */
- unsigned int U:4; /* 20-23 Number of unique instruct. */
- unsigned int z:2; /* zeros */
- unsigned int T:1; /* 26 PSW DAT mode */
- unsigned int W:1; /* 27 PSW wait state */
- unsigned int P:1; /* 28 PSW Problem state */
- unsigned int AS:2; /* 29-30 PSW address-space control */
- unsigned int I:1; /* 31 entry valid or invalid */
- unsigned int:16;
- unsigned int prim_asn:16; /* primary ASN */
- unsigned long long ia; /* Instruction Address */
- unsigned long long lpp; /* Logical-Partition Program Param. */
- unsigned long long vpp; /* Virtual-Machine Program Param. */
-};
-
-struct hws_trailer_entry {
- unsigned int f:1; /* 0 - Block Full Indicator */
- unsigned int a:1; /* 1 - Alert request control */
- unsigned long:62; /* 2 - 63: Reserved */
- unsigned long overflow; /* 64 - sample Overflow count */
- unsigned long timestamp; /* 16 - time-stamp */
- unsigned long timestamp1; /* */
- unsigned long reserved1; /* 32 -Reserved */
- unsigned long reserved2; /* */
- unsigned long progusage1; /* 48 - reserved for programming use */
- unsigned long progusage2; /* */
-};
-
int hwsampler_setup(void);
int hwsampler_shutdown(void);
int hwsampler_allocate(unsigned long sdbt, unsigned long sdb);
diff --git a/arch/s390/oprofile/init.c b/arch/s390/oprofile/init.c
index 2297be406c6..9ffe645d598 100644
--- a/arch/s390/oprofile/init.c
+++ b/arch/s390/oprofile/init.c
@@ -1,8 +1,6 @@
-/**
- * arch/s390/oprofile/init.c
- *
+/*
* S390 Version
- * Copyright (C) 2002-2011 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Copyright IBM Corp. 2002, 2011
* Author(s): Thomas Spatzier (tspat@de.ibm.com)
* Author(s): Mahesh Salgaonkar (mahesh@linux.vnet.ibm.com)
* Author(s): Heinz Graalfs (graalfs@linux.vnet.ibm.com)
@@ -12,6 +10,7 @@
*/
#include <linux/oprofile.h>
+#include <linux/perf_event.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/fs.h>
@@ -69,6 +68,21 @@ module_param_call(cpu_type, set_cpu_type, NULL, NULL, 0);
MODULE_PARM_DESC(cpu_type, "Force legacy basic mode sampling"
"(report cpu_type \"timer\"");
+static int __oprofile_hwsampler_start(void)
+{
+ int retval;
+
+ retval = hwsampler_allocate(oprofile_sdbt_blocks, oprofile_sdb_blocks);
+ if (retval)
+ return retval;
+
+ retval = hwsampler_start_all(oprofile_hw_interval);
+ if (retval)
+ hwsampler_deallocate();
+
+ return retval;
+}
+
static int oprofile_hwsampler_start(void)
{
int retval;
@@ -78,13 +92,13 @@ static int oprofile_hwsampler_start(void)
if (!hwsampler_running)
return timer_ops.start();
- retval = hwsampler_allocate(oprofile_sdbt_blocks, oprofile_sdb_blocks);
+ retval = perf_reserve_sampling();
if (retval)
return retval;
- retval = hwsampler_start_all(oprofile_hw_interval);
+ retval = __oprofile_hwsampler_start();
if (retval)
- hwsampler_deallocate();
+ perf_release_sampling();
return retval;
}
@@ -98,6 +112,7 @@ static void oprofile_hwsampler_stop(void)
hwsampler_stop_all();
hwsampler_deallocate();
+ perf_release_sampling();
return;
}
@@ -171,7 +186,7 @@ static ssize_t hw_interval_write(struct file *file, char const __user *buf,
if (*offset)
return -EINVAL;
retval = oprofilefs_ulong_from_user(&val, buf, count);
- if (retval)
+ if (retval <= 0)
return retval;
if (val < oprofile_min_interval)
oprofile_hw_interval = oprofile_min_interval;
@@ -214,7 +229,7 @@ static ssize_t hwsampler_zero_write(struct file *file, char const __user *buf,
return -EINVAL;
retval = oprofilefs_ulong_from_user(&val, buf, count);
- if (retval)
+ if (retval <= 0)
return retval;
if (val != 0)
return -EINVAL;
@@ -245,7 +260,7 @@ static ssize_t hwsampler_kernel_write(struct file *file, char const __user *buf,
return -EINVAL;
retval = oprofilefs_ulong_from_user(&val, buf, count);
- if (retval)
+ if (retval <= 0)
return retval;
if (val != 0 && val != 1)
@@ -280,7 +295,7 @@ static ssize_t hwsampler_user_write(struct file *file, char const __user *buf,
return -EINVAL;
retval = oprofilefs_ulong_from_user(&val, buf, count);
- if (retval)
+ if (retval <= 0)
return retval;
if (val != 0 && val != 1)
@@ -319,7 +334,7 @@ static ssize_t timer_enabled_write(struct file *file, char const __user *buf,
return -EINVAL;
retval = oprofilefs_ulong_from_user(&val, buf, count);
- if (retval)
+ if (retval <= 0)
return retval;
if (val != 0 && val != 1)
@@ -348,16 +363,15 @@ static const struct file_operations timer_enabled_fops = {
};
-static int oprofile_create_hwsampling_files(struct super_block *sb,
- struct dentry *root)
+static int oprofile_create_hwsampling_files(struct dentry *root)
{
struct dentry *dir;
- dir = oprofilefs_mkdir(sb, root, "timer");
+ dir = oprofilefs_mkdir(root, "timer");
if (!dir)
return -EINVAL;
- oprofilefs_create_file(sb, dir, "enabled", &timer_enabled_fops);
+ oprofilefs_create_file(dir, "enabled", &timer_enabled_fops);
if (!hwsampler_available)
return 0;
@@ -378,17 +392,17 @@ static int oprofile_create_hwsampling_files(struct super_block *sb,
* and can only be set to 0.
*/
- dir = oprofilefs_mkdir(sb, root, "0");
+ dir = oprofilefs_mkdir(root, "0");
if (!dir)
return -EINVAL;
- oprofilefs_create_file(sb, dir, "enabled", &hwsampler_fops);
- oprofilefs_create_file(sb, dir, "event", &zero_fops);
- oprofilefs_create_file(sb, dir, "count", &hw_interval_fops);
- oprofilefs_create_file(sb, dir, "unit_mask", &zero_fops);
- oprofilefs_create_file(sb, dir, "kernel", &kernel_fops);
- oprofilefs_create_file(sb, dir, "user", &user_fops);
- oprofilefs_create_ulong(sb, dir, "hw_sdbt_blocks",
+ oprofilefs_create_file(dir, "enabled", &hwsampler_fops);
+ oprofilefs_create_file(dir, "event", &zero_fops);
+ oprofilefs_create_file(dir, "count", &hw_interval_fops);
+ oprofilefs_create_file(dir, "unit_mask", &zero_fops);
+ oprofilefs_create_file(dir, "kernel", &kernel_fops);
+ oprofilefs_create_file(dir, "user", &user_fops);
+ oprofilefs_create_ulong(dir, "hw_sdbt_blocks",
&oprofile_sdbt_blocks);
} else {
@@ -398,19 +412,19 @@ static int oprofile_create_hwsampling_files(struct super_block *sb,
* space tools. The /dev/oprofile/hwsampling fs is
* provided in that case.
*/
- dir = oprofilefs_mkdir(sb, root, "hwsampling");
+ dir = oprofilefs_mkdir(root, "hwsampling");
if (!dir)
return -EINVAL;
- oprofilefs_create_file(sb, dir, "hwsampler",
+ oprofilefs_create_file(dir, "hwsampler",
&hwsampler_fops);
- oprofilefs_create_file(sb, dir, "hw_interval",
+ oprofilefs_create_file(dir, "hw_interval",
&hw_interval_fops);
- oprofilefs_create_ro_ulong(sb, dir, "hw_min_interval",
+ oprofilefs_create_ro_ulong(dir, "hw_min_interval",
&oprofile_min_interval);
- oprofilefs_create_ro_ulong(sb, dir, "hw_max_interval",
+ oprofilefs_create_ro_ulong(dir, "hw_max_interval",
&oprofile_max_interval);
- oprofilefs_create_ulong(sb, dir, "hw_sdbt_blocks",
+ oprofilefs_create_ulong(dir, "hw_sdbt_blocks",
&oprofile_sdbt_blocks);
}
return 0;
@@ -442,6 +456,7 @@ static int oprofile_hwsampler_init(struct oprofile_operations *ops)
switch (id.machine) {
case 0x2097: case 0x2098: ops->cpu_type = "s390/z10"; break;
case 0x2817: case 0x2818: ops->cpu_type = "s390/z196"; break;
+ case 0x2827: case 0x2828: ops->cpu_type = "s390/zEC12"; break;
default: return -ENODEV;
}
}
diff --git a/arch/s390/oprofile/op_counter.h b/arch/s390/oprofile/op_counter.h
index 1a8d3ca0901..61b2531eef1 100644
--- a/arch/s390/oprofile/op_counter.h
+++ b/arch/s390/oprofile/op_counter.h
@@ -1,7 +1,5 @@
-/**
- * arch/s390/oprofile/op_counter.h
- *
- * Copyright (C) 2011 IBM Deutschland Entwicklung GmbH, IBM Corporation
+/*
+ * Copyright IBM Corp. 2011
* Author(s): Andreas Krebbel (krebbel@linux.vnet.ibm.com)
*
* @remark Copyright 2011 OProfile authors
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-24 07:14:05 +0000