Merge branch 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers into asm-generic

Patches from David Howells <dhowells@redhat.com>:

This is to complete part of the UAPI disintegration for which the
preparatory patches were pulled recently.

Note that there are some fixup patches which are at the base of the
branch aimed at you, plus all arches get the asm-generic branch merged in too.

* 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers:
  UAPI: (Scripted) Disintegrate include/asm-generic
  UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k)
  c6x: remove c6x signal.h
  UAPI: Split compound conditionals containing __KERNEL__ in Arm64
  UAPI: Fix the guards on various asm/unistd.h files

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 165 insertions, 186 deletions

diff --git a/arch/s390/kernel/sysinfo.c b/arch/s390/kernel/sysinfo.c
index fa0eb238dac..62f89d98e88 100644
--- a/arch/s390/kernel/sysinfo.c
+++ b/arch/s390/kernel/sysinfo.c
@@ -22,17 +22,41 @@
 #include <math-emu/soft-fp.h>
 #include <math-emu/single.h>
 
-static inline int stsi_0(void)
+int topology_max_mnest;
+
+/*
+ * stsi - store system information
+ *
+ * Returns the current configuration level if function code 0 was specified.
+ * Otherwise returns 0 on success or a negative value on error.
+ */
+int stsi(void *sysinfo, int fc, int sel1, int sel2)
 {
-	int rc = stsi(NULL, 0, 0, 0);
-	return rc == -ENOSYS ? rc : (((unsigned int) rc) >> 28);
+	register int r0 asm("0") = (fc << 28) | sel1;
+	register int r1 asm("1") = sel2;
+	int rc = 0;
+
+	asm volatile(
+		"	stsi	0(%3)\n"
+		"0:	jz	2f\n"
+		"1:	lhi	%1,%4\n"
+		"2:\n"
+		EX_TABLE(0b, 1b)
+		: "+d" (r0), "+d" (rc)
+		: "d" (r1), "a" (sysinfo), "K" (-EOPNOTSUPP)
+		: "cc", "memory");
+	if (rc)
+		return rc;
+	return fc ? 0 : ((unsigned int) r0) >> 28;
 }
+EXPORT_SYMBOL(stsi);
 
-static int stsi_1_1_1(struct sysinfo_1_1_1 *info, char *page, int len)
+static void stsi_1_1_1(struct seq_file *m, struct sysinfo_1_1_1 *info)
 {
-	if (stsi(info, 1, 1, 1) == -ENOSYS)
-		return len;
+	int i;
 
+	if (stsi(info, 1, 1, 1))
+		return;
 	EBCASC(info->manufacturer, sizeof(info->manufacturer));
 	EBCASC(info->type, sizeof(info->type));
 	EBCASC(info->model, sizeof(info->model));
@@ -41,242 +65,197 @@ static int stsi_1_1_1(struct sysinfo_1_1_1 *info, char *page, int len)
 	EBCASC(info->model_capacity, sizeof(info->model_capacity));
 	EBCASC(info->model_perm_cap, sizeof(info->model_perm_cap));
 	EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap));
-	len += sprintf(page + len, "Manufacturer:         %-16.16s\n",
-		       info->manufacturer);
-	len += sprintf(page + len, "Type:                 %-4.4s\n",
-		       info->type);
+	seq_printf(m, "Manufacturer:         %-16.16s\n", info->manufacturer);
+	seq_printf(m, "Type:                 %-4.4s\n", info->type);
+	/*
+	 * Sigh: the model field has been renamed with System z9
+	 * to model_capacity and a new model field has been added
+	 * after the plant field. To avoid confusing older programs
+	 * the "Model:" prints "model_capacity model" or just
+	 * "model_capacity" if the model string is empty .
+	 */
+	seq_printf(m, "Model:                %-16.16s", info->model_capacity);
 	if (info->model[0] != '\0')
-		/*
-		 * Sigh: the model field has been renamed with System z9
-		 * to model_capacity and a new model field has been added
-		 * after the plant field. To avoid confusing older programs
-		 * the "Model:" prints "model_capacity model" or just
-		 * "model_capacity" if the model string is empty .
-		 */
-		len += sprintf(page + len,
-			       "Model:                %-16.16s %-16.16s\n",
-			       info->model_capacity, info->model);
-	else
-		len += sprintf(page + len, "Model:                %-16.16s\n",
-			       info->model_capacity);
-	len += sprintf(page + len, "Sequence Code:        %-16.16s\n",
-		       info->sequence);
-	len += sprintf(page + len, "Plant:                %-4.4s\n",
-		       info->plant);
-	len += sprintf(page + len, "Model Capacity:       %-16.16s %08u\n",
-		       info->model_capacity, *(u32 *) info->model_cap_rating);
-	if (info->model_perm_cap[0] != '\0')
-		len += sprintf(page + len,
-			       "Model Perm. Capacity: %-16.16s %08u\n",
-			       info->model_perm_cap,
-			       *(u32 *) info->model_perm_cap_rating);
-	if (info->model_temp_cap[0] != '\0')
-		len += sprintf(page + len,
-			       "Model Temp. Capacity: %-16.16s %08u\n",
-			       info->model_temp_cap,
-			       *(u32 *) info->model_temp_cap_rating);
+		seq_printf(m, " %-16.16s", info->model);
+	seq_putc(m, '\n');
+	seq_printf(m, "Sequence Code:        %-16.16s\n", info->sequence);
+	seq_printf(m, "Plant:                %-4.4s\n", info->plant);
+	seq_printf(m, "Model Capacity:       %-16.16s %08u\n",
+		   info->model_capacity, info->model_cap_rating);
+	if (info->model_perm_cap_rating)
+		seq_printf(m, "Model Perm. Capacity: %-16.16s %08u\n",
+			   info->model_perm_cap,
+			   info->model_perm_cap_rating);
+	if (info->model_temp_cap_rating)
+		seq_printf(m, "Model Temp. Capacity: %-16.16s %08u\n",
+			   info->model_temp_cap,
+			   info->model_temp_cap_rating);
+	if (info->ncr)
+		seq_printf(m, "Nominal Cap. Rating:  %08u\n", info->ncr);
+	if (info->npr)
+		seq_printf(m, "Nominal Perm. Rating: %08u\n", info->npr);
+	if (info->ntr)
+		seq_printf(m, "Nominal Temp. Rating: %08u\n", info->ntr);
 	if (info->cai) {
-		len += sprintf(page + len,
-			       "Capacity Adj. Ind.:   %d\n",
-			       info->cai);
-		len += sprintf(page + len, "Capacity Ch. Reason:  %d\n",
-			       info->ccr);
+		seq_printf(m, "Capacity Adj. Ind.:   %d\n", info->cai);
+		seq_printf(m, "Capacity Ch. Reason:  %d\n", info->ccr);
+		seq_printf(m, "Capacity Transient:   %d\n", info->t);
+	}
+	if (info->p) {
+		for (i = 1; i <= ARRAY_SIZE(info->typepct); i++) {
+			seq_printf(m, "Type %d Percentage:    %d\n",
+				   i, info->typepct[i - 1]);
+		}
 	}
-	return len;
 }
 
-static int stsi_15_1_x(struct sysinfo_15_1_x *info, char *page, int len)
+static void stsi_15_1_x(struct seq_file *m, struct sysinfo_15_1_x *info)
 {
 	static int max_mnest;
 	int i, rc;
 
-	len += sprintf(page + len, "\n");
+	seq_putc(m, '\n');
 	if (!MACHINE_HAS_TOPOLOGY)
-		return len;
-	if (max_mnest) {
-		stsi(info, 15, 1, max_mnest);
-	} else {
-		for (max_mnest = 6; max_mnest > 1; max_mnest--) {
-			rc = stsi(info, 15, 1, max_mnest);
-			if (rc != -ENOSYS)
-				break;
-		}
-	}
-	len += sprintf(page + len, "CPU Topology HW:     ");
+		return;
+	if (stsi(info, 15, 1, topology_max_mnest))
+		return;
+	seq_printf(m, "CPU Topology HW:     ");
 	for (i = 0; i < TOPOLOGY_NR_MAG; i++)
-		len += sprintf(page + len, " %d", info->mag[i]);
-	len += sprintf(page + len, "\n");
+		seq_printf(m, " %d", info->mag[i]);
+	seq_putc(m, '\n');
 #ifdef CONFIG_SCHED_MC
 	store_topology(info);
-	len += sprintf(page + len, "CPU Topology SW:     ");
+	seq_printf(m, "CPU Topology SW:     ");
 	for (i = 0; i < TOPOLOGY_NR_MAG; i++)
-		len += sprintf(page + len, " %d", info->mag[i]);
-	len += sprintf(page + len, "\n");
+		seq_printf(m, " %d", info->mag[i]);
+	seq_putc(m, '\n');
 #endif
-	return len;
 }
 
-static int stsi_1_2_2(struct sysinfo_1_2_2 *info, char *page, int len)
+static void stsi_1_2_2(struct seq_file *m, struct sysinfo_1_2_2 *info)
 {
 	struct sysinfo_1_2_2_extension *ext;
 	int i;
 
-	if (stsi(info, 1, 2, 2) == -ENOSYS)
-		return len;
+	if (stsi(info, 1, 2, 2))
+		return;
 	ext = (struct sysinfo_1_2_2_extension *)
 		((unsigned long) info + info->acc_offset);
-
-	len += sprintf(page + len, "CPUs Total:           %d\n",
-		       info->cpus_total);
-	len += sprintf(page + len, "CPUs Configured:      %d\n",
-		       info->cpus_configured);
-	len += sprintf(page + len, "CPUs Standby:         %d\n",
-		       info->cpus_standby);
-	len += sprintf(page + len, "CPUs Reserved:        %d\n",
-		       info->cpus_reserved);
-
-	if (info->format == 1) {
-		/*
-		 * Sigh 2. According to the specification the alternate
-		 * capability field is a 32 bit floating point number
-		 * if the higher order 8 bits are not zero. Printing
-		 * a floating point number in the kernel is a no-no,
-		 * always print the number as 32 bit unsigned integer.
-		 * The user-space needs to know about the strange
-		 * encoding of the alternate cpu capability.
-		 */
-		len += sprintf(page + len, "Capability:           %u %u\n",
-			       info->capability, ext->alt_capability);
-		for (i = 2; i <= info->cpus_total; i++)
-			len += sprintf(page + len,
-				       "Adjustment %02d-way:    %u %u\n",
-				       i, info->adjustment[i-2],
-				       ext->alt_adjustment[i-2]);
-
-	} else {
-		len += sprintf(page + len, "Capability:           %u\n",
-			       info->capability);
-		for (i = 2; i <= info->cpus_total; i++)
-			len += sprintf(page + len,
-				       "Adjustment %02d-way:    %u\n",
-				       i, info->adjustment[i-2]);
+	seq_printf(m, "CPUs Total:           %d\n", info->cpus_total);
+	seq_printf(m, "CPUs Configured:      %d\n", info->cpus_configured);
+	seq_printf(m, "CPUs Standby:         %d\n", info->cpus_standby);
+	seq_printf(m, "CPUs Reserved:        %d\n", info->cpus_reserved);
+	/*
+	 * Sigh 2. According to the specification the alternate
+	 * capability field is a 32 bit floating point number
+	 * if the higher order 8 bits are not zero. Printing
+	 * a floating point number in the kernel is a no-no,
+	 * always print the number as 32 bit unsigned integer.
+	 * The user-space needs to know about the strange
+	 * encoding of the alternate cpu capability.
+	 */
+	seq_printf(m, "Capability:           %u", info->capability);
+	if (info->format == 1)
+		seq_printf(m, " %u", ext->alt_capability);
+	seq_putc(m, '\n');
+	if (info->nominal_cap)
+		seq_printf(m, "Nominal Capability:   %d\n", info->nominal_cap);
+	if (info->secondary_cap)
+		seq_printf(m, "Secondary Capability: %d\n", info->secondary_cap);
+	for (i = 2; i <= info->cpus_total; i++) {
+		seq_printf(m, "Adjustment %02d-way:    %u",
+			   i, info->adjustment[i-2]);
+		if (info->format == 1)
+			seq_printf(m, " %u", ext->alt_adjustment[i-2]);
+		seq_putc(m, '\n');
 	}
-
-	if (info->secondary_capability != 0)
-		len += sprintf(page + len, "Secondary Capability: %d\n",
-			       info->secondary_capability);
-	return len;
 }
 
-static int stsi_2_2_2(struct sysinfo_2_2_2 *info, char *page, int len)
+static void stsi_2_2_2(struct seq_file *m, struct sysinfo_2_2_2 *info)
 {
-	if (stsi(info, 2, 2, 2) == -ENOSYS)
-		return len;
-
+	if (stsi(info, 2, 2, 2))
+		return;
 	EBCASC(info->name, sizeof(info->name));
-
-	len += sprintf(page + len, "\n");
-	len += sprintf(page + len, "LPAR Number:          %d\n",
-		       info->lpar_number);
-
-	len += sprintf(page + len, "LPAR Characteristics: ");
+	seq_putc(m, '\n');
+	seq_printf(m, "LPAR Number:          %d\n", info->lpar_number);
+	seq_printf(m, "LPAR Characteristics: ");
 	if (info->characteristics & LPAR_CHAR_DEDICATED)
-		len += sprintf(page + len, "Dedicated ");
+		seq_printf(m, "Dedicated ");
 	if (info->characteristics & LPAR_CHAR_SHARED)
-		len += sprintf(page + len, "Shared ");
+		seq_printf(m, "Shared ");
 	if (info->characteristics & LPAR_CHAR_LIMITED)
-		len += sprintf(page + len, "Limited ");
-	len += sprintf(page + len, "\n");
-
-	len += sprintf(page + len, "LPAR Name:            %-8.8s\n",
-		       info->name);
-
-	len += sprintf(page + len, "LPAR Adjustment:      %d\n",
-		       info->caf);
-
-	len += sprintf(page + len, "LPAR CPUs Total:      %d\n",
-		       info->cpus_total);
-	len += sprintf(page + len, "LPAR CPUs Configured: %d\n",
-		       info->cpus_configured);
-	len += sprintf(page + len, "LPAR CPUs Standby:    %d\n",
-		       info->cpus_standby);
-	len += sprintf(page + len, "LPAR CPUs Reserved:   %d\n",
-		       info->cpus_reserved);
-	len += sprintf(page + len, "LPAR CPUs Dedicated:  %d\n",
-		       info->cpus_dedicated);
-	len += sprintf(page + len, "LPAR CPUs Shared:     %d\n",
-		       info->cpus_shared);
-	return len;
+		seq_printf(m, "Limited ");
+	seq_putc(m, '\n');
+	seq_printf(m, "LPAR Name:            %-8.8s\n", info->name);
+	seq_printf(m, "LPAR Adjustment:      %d\n", info->caf);
+	seq_printf(m, "LPAR CPUs Total:      %d\n", info->cpus_total);
+	seq_printf(m, "LPAR CPUs Configured: %d\n", info->cpus_configured);
+	seq_printf(m, "LPAR CPUs Standby:    %d\n", info->cpus_standby);
+	seq_printf(m, "LPAR CPUs Reserved:   %d\n", info->cpus_reserved);
+	seq_printf(m, "LPAR CPUs Dedicated:  %d\n", info->cpus_dedicated);
+	seq_printf(m, "LPAR CPUs Shared:     %d\n", info->cpus_shared);
 }
 
-static int stsi_3_2_2(struct sysinfo_3_2_2 *info, char *page, int len)
+static void stsi_3_2_2(struct seq_file *m, struct sysinfo_3_2_2 *info)
 {
 	int i;
 
-	if (stsi(info, 3, 2, 2) == -ENOSYS)
-		return len;
+	if (stsi(info, 3, 2, 2))
+		return;
 	for (i = 0; i < info->count; i++) {
 		EBCASC(info->vm[i].name, sizeof(info->vm[i].name));
 		EBCASC(info->vm[i].cpi, sizeof(info->vm[i].cpi));
-		len += sprintf(page + len, "\n");
-		len += sprintf(page + len, "VM%02d Name:            %-8.8s\n",
-			       i, info->vm[i].name);
-		len += sprintf(page + len, "VM%02d Control Program: %-16.16s\n",
-			       i, info->vm[i].cpi);
-
-		len += sprintf(page + len, "VM%02d Adjustment:      %d\n",
-			       i, info->vm[i].caf);
-
-		len += sprintf(page + len, "VM%02d CPUs Total:      %d\n",
-			       i, info->vm[i].cpus_total);
-		len += sprintf(page + len, "VM%02d CPUs Configured: %d\n",
-			       i, info->vm[i].cpus_configured);
-		len += sprintf(page + len, "VM%02d CPUs Standby:    %d\n",
-			       i, info->vm[i].cpus_standby);
-		len += sprintf(page + len, "VM%02d CPUs Reserved:   %d\n",
-			       i, info->vm[i].cpus_reserved);
+		seq_putc(m, '\n');
+		seq_printf(m, "VM%02d Name:            %-8.8s\n", i, info->vm[i].name);
+		seq_printf(m, "VM%02d Control Program: %-16.16s\n", i, info->vm[i].cpi);
+		seq_printf(m, "VM%02d Adjustment:      %d\n", i, info->vm[i].caf);
+		seq_printf(m, "VM%02d CPUs Total:      %d\n", i, info->vm[i].cpus_total);
+		seq_printf(m, "VM%02d CPUs Configured: %d\n", i, info->vm[i].cpus_configured);
+		seq_printf(m, "VM%02d CPUs Standby:    %d\n", i, info->vm[i].cpus_standby);
+		seq_printf(m, "VM%02d CPUs Reserved:   %d\n", i, info->vm[i].cpus_reserved);
 	}
-	return len;
 }
 
-static int proc_read_sysinfo(char *page, char **start,
-			     off_t off, int count,
-			     int *eof, void *data)
+static int sysinfo_show(struct seq_file *m, void *v)
 {
-	unsigned long info = get_zeroed_page(GFP_KERNEL);
-	int level, len;
+	void *info = (void *)get_zeroed_page(GFP_KERNEL);
+	int level;
 
 	if (!info)
 		return 0;
-
-	len = 0;
-	level = stsi_0();
+	level = stsi(NULL, 0, 0, 0);
 	if (level >= 1)
-		len = stsi_1_1_1((struct sysinfo_1_1_1 *) info, page, len);
-
+		stsi_1_1_1(m, info);
 	if (level >= 1)
-		len = stsi_15_1_x((struct sysinfo_15_1_x *) info, page, len);
-
+		stsi_15_1_x(m, info);
 	if (level >= 1)
-		len = stsi_1_2_2((struct sysinfo_1_2_2 *) info, page, len);
-
+		stsi_1_2_2(m, info);
 	if (level >= 2)
-		len = stsi_2_2_2((struct sysinfo_2_2_2 *) info, page, len);
-
+		stsi_2_2_2(m, info);
 	if (level >= 3)
-		len = stsi_3_2_2((struct sysinfo_3_2_2 *) info, page, len);
+		stsi_3_2_2(m, info);
+	free_page((unsigned long)info);
+	return 0;
+}
 
-	free_page(info);
-	return len;
+static int sysinfo_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, sysinfo_show, NULL);
 }
 
-static __init int create_proc_sysinfo(void)
+static const struct file_operations sysinfo_fops = {
+	.open		= sysinfo_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static int __init sysinfo_create_proc(void)
 {
-	create_proc_read_entry("sysinfo", 0444, NULL,
-			       proc_read_sysinfo, NULL);
+	proc_create("sysinfo", 0444, NULL, &sysinfo_fops);
 	return 0;
 }
-device_initcall(create_proc_sysinfo);
+device_initcall(sysinfo_create_proc);
 
 /*
  * Service levels interface.
@@ -407,7 +386,7 @@ void s390_adjust_jiffies(void)
 	if (!info)
 		return;
 
-	if (stsi(info, 1, 2, 2) != -ENOSYS) {
+	if (stsi(info, 1, 2, 2) == 0) {
 		/*
 		 * Major sigh. The cpu capability encoding is "special".
 		 * If the first 9 bits of info->capability are 0 then it