Merge branch 'linus' into stackprotector

Conflicts:
	arch/x86/include/asm/pda.h
	kernel/fork.c

1 files changed, 75 insertions, 69 deletions

diff --git a/arch/x86/oprofile/op_model_amd.c b/arch/x86/oprofile/op_model_amd.c
index d9faf607b3a6..98658f25f542 100644
--- a/arch/x86/oprofile/op_model_amd.c
+++ b/arch/x86/oprofile/op_model_amd.c
@@ -65,10 +65,13 @@ static unsigned long reset_value[NUM_COUNTERS];
 #define IBS_FETCH_BEGIN 3
 #define IBS_OP_BEGIN    4
 
-/* The function interface needs to be fixed, something like add
-   data. Should then be added to linux/oprofile.h. */
-extern void oprofile_add_ibs_sample(struct pt_regs *const regs,
-				    unsigned int * const ibs_sample, u8 code);
+/*
+ * The function interface needs to be fixed, something like add
+ * data. Should then be added to linux/oprofile.h.
+ */
+extern void
+oprofile_add_ibs_sample(struct pt_regs * const regs,
+			unsigned int * const ibs_sample, int ibs_code);
 
 struct ibs_fetch_sample {
 	/* MSRC001_1031 IBS Fetch Linear Address Register */
@@ -103,11 +106,6 @@ struct ibs_op_sample {
 	unsigned int ibs_dc_phys_high;
 };
 
-/*
- * unitialize the APIC for the IBS interrupts if needed on AMD Family10h+
-*/
-static void clear_ibs_nmi(void);
-
 static int ibs_allowed;	/* AMD Family10h and later */
 
 struct op_ibs_config {
@@ -222,7 +220,7 @@ op_amd_handle_ibs(struct pt_regs * const regs,
 						(unsigned int *)&ibs_fetch,
 						IBS_FETCH_BEGIN);
 
-			/*reenable the IRQ */
+			/* reenable the IRQ */
 			rdmsr(MSR_AMD64_IBSFETCHCTL, low, high);
 			high &= ~IBS_FETCH_HIGH_VALID_BIT;
 			high |= IBS_FETCH_HIGH_ENABLE;
@@ -309,12 +307,15 @@ static void op_amd_start(struct op_msrs const * const msrs)
 #ifdef CONFIG_OPROFILE_IBS
 	if (ibs_allowed && ibs_config.fetch_enabled) {
 		low = (ibs_config.max_cnt_fetch >> 4) & 0xFFFF;
-		high = IBS_FETCH_HIGH_ENABLE;
+		high = ((ibs_config.rand_en & 0x1) << 25) /* bit 57 */
+			+ IBS_FETCH_HIGH_ENABLE;
 		wrmsr(MSR_AMD64_IBSFETCHCTL, low, high);
 	}
 
 	if (ibs_allowed && ibs_config.op_enabled) {
-		low = ((ibs_config.max_cnt_op >> 4) & 0xFFFF) + IBS_OP_LOW_ENABLE;
+		low = ((ibs_config.max_cnt_op >> 4) & 0xFFFF)
+			+ ((ibs_config.dispatched_ops & 0x1) << 19) /* bit 19 */
+			+ IBS_OP_LOW_ENABLE;
 		high = 0;
 		wrmsr(MSR_AMD64_IBSOPCTL, low, high);
 	}
@@ -327,8 +328,10 @@ static void op_amd_stop(struct op_msrs const * const msrs)
 	unsigned int low, high;
 	int i;
 
-	/* Subtle: stop on all counters to avoid race with
-	 * setting our pm callback */
+	/*
+	 * Subtle: stop on all counters to avoid race with setting our
+	 * pm callback
+	 */
 	for (i = 0 ; i < NUM_COUNTERS ; ++i) {
 		if (!reset_value[i])
 			continue;
@@ -339,13 +342,15 @@ static void op_amd_stop(struct op_msrs const * const msrs)
 
 #ifdef CONFIG_OPROFILE_IBS
 	if (ibs_allowed && ibs_config.fetch_enabled) {
-		low = 0;		/* clear max count and enable */
+		/* clear max count and enable */
+		low = 0;
 		high = 0;
 		wrmsr(MSR_AMD64_IBSFETCHCTL, low, high);
 	}
 
 	if (ibs_allowed && ibs_config.op_enabled) {
-		low = 0;		/* clear max count and enable */
+		/* clear max count and enable */
+		low = 0;
 		high = 0;
 		wrmsr(MSR_AMD64_IBSOPCTL, low, high);
 	}
@@ -366,18 +371,7 @@ static void op_amd_shutdown(struct op_msrs const * const msrs)
 	}
 }
 
-#ifndef CONFIG_OPROFILE_IBS
-
-/* no IBS support */
-
-static int op_amd_init(struct oprofile_operations *ops)
-{
-	return 0;
-}
-
-static void op_amd_exit(void) {}
-
-#else
+#ifdef CONFIG_OPROFILE_IBS
 
 static u8 ibs_eilvt_off;
 
@@ -391,7 +385,7 @@ static inline void apic_clear_ibs_nmi_per_cpu(void *arg)
 	setup_APIC_eilvt_ibs(0, APIC_EILVT_MSG_FIX, 1);
 }
 
-static int pfm_amd64_setup_eilvt(void)
+static int init_ibs_nmi(void)
 {
 #define IBSCTL_LVTOFFSETVAL		(1 << 8)
 #define IBSCTL				0x1cc
@@ -439,18 +433,22 @@ static int pfm_amd64_setup_eilvt(void)
 	return 0;
 }
 
-/*
- * initialize the APIC for the IBS interrupts
- * if available (AMD Family10h rev B0 and later)
- */
-static void setup_ibs(void)
+/* uninitialize the APIC for the IBS interrupts if needed */
+static void clear_ibs_nmi(void)
+{
+	if (ibs_allowed)
+		on_each_cpu(apic_clear_ibs_nmi_per_cpu, NULL, 1);
+}
+
+/* initialize the APIC for the IBS interrupts if available */
+static void ibs_init(void)
 {
 	ibs_allowed = boot_cpu_has(X86_FEATURE_IBS);
 
 	if (!ibs_allowed)
 		return;
 
-	if (pfm_amd64_setup_eilvt()) {
+	if (init_ibs_nmi()) {
 		ibs_allowed = 0;
 		return;
 	}
@@ -458,21 +456,18 @@ static void setup_ibs(void)
 	printk(KERN_INFO "oprofile: AMD IBS detected\n");
 }
 
-
-/*
- * unitialize the APIC for the IBS interrupts if needed on AMD Family10h
- * rev B0 and later */
-static void clear_ibs_nmi(void)
+static void ibs_exit(void)
 {
-	if (ibs_allowed)
-		on_each_cpu(apic_clear_ibs_nmi_per_cpu, NULL, 1);
+	if (!ibs_allowed)
+		return;
+
+	clear_ibs_nmi();
 }
 
-static int (*create_arch_files)(struct super_block * sb, struct dentry * root);
+static int (*create_arch_files)(struct super_block *sb, struct dentry *root);
 
-static int setup_ibs_files(struct super_block * sb, struct dentry * root)
+static int setup_ibs_files(struct super_block *sb, struct dentry *root)
 {
-	char buf[12];
 	struct dentry *dir;
 	int ret = 0;
 
@@ -494,29 +489,29 @@ static int setup_ibs_files(struct super_block * sb, struct dentry * root)
 	ibs_config.max_cnt_op = 250000;
 	ibs_config.op_enabled = 0;
 	ibs_config.dispatched_ops = 1;
-	snprintf(buf,  sizeof(buf), "ibs_fetch");
-	dir = oprofilefs_mkdir(sb, root, buf);
-	oprofilefs_create_ulong(sb, dir, "rand_enable",
-				&ibs_config.rand_en);
+
+	dir = oprofilefs_mkdir(sb, root, "ibs_fetch");
 	oprofilefs_create_ulong(sb, dir, "enable",
-		&ibs_config.fetch_enabled);
+				&ibs_config.fetch_enabled);
 	oprofilefs_create_ulong(sb, dir, "max_count",
-		&ibs_config.max_cnt_fetch);
-	snprintf(buf,  sizeof(buf), "ibs_uops");
-	dir = oprofilefs_mkdir(sb, root, buf);
+				&ibs_config.max_cnt_fetch);
+	oprofilefs_create_ulong(sb, dir, "rand_enable",
+				&ibs_config.rand_en);
+
+	dir = oprofilefs_mkdir(sb, root, "ibs_op");
 	oprofilefs_create_ulong(sb, dir, "enable",
-		&ibs_config.op_enabled);
+				&ibs_config.op_enabled);
 	oprofilefs_create_ulong(sb, dir, "max_count",
-		&ibs_config.max_cnt_op);
+				&ibs_config.max_cnt_op);
 	oprofilefs_create_ulong(sb, dir, "dispatched_ops",
-		&ibs_config.dispatched_ops);
+				&ibs_config.dispatched_ops);
 
 	return 0;
 }
 
 static int op_amd_init(struct oprofile_operations *ops)
 {
-	setup_ibs();
+	ibs_init();
 	create_arch_files = ops->create_files;
 	ops->create_files = setup_ibs_files;
 	return 0;
@@ -524,20 +519,31 @@ static int op_amd_init(struct oprofile_operations *ops)
 
 static void op_amd_exit(void)
 {
-	clear_ibs_nmi();
+	ibs_exit();
 }
 
-#endif
+#else
+
+/* no IBS support */
+
+static int op_amd_init(struct oprofile_operations *ops)
+{
+	return 0;
+}
+
+static void op_amd_exit(void) {}
+
+#endif /* CONFIG_OPROFILE_IBS */
 
 struct op_x86_model_spec const op_amd_spec = {
-	.init = op_amd_init,
-	.exit = op_amd_exit,
-	.num_counters = NUM_COUNTERS,
-	.num_controls = NUM_CONTROLS,
-	.fill_in_addresses = &op_amd_fill_in_addresses,
-	.setup_ctrs = &op_amd_setup_ctrs,
-	.check_ctrs = &op_amd_check_ctrs,
-	.start = &op_amd_start,
-	.stop = &op_amd_stop,
-	.shutdown = &op_amd_shutdown
+	.init			= op_amd_init,
+	.exit			= op_amd_exit,
+	.num_counters		= NUM_COUNTERS,
+	.num_controls		= NUM_CONTROLS,
+	.fill_in_addresses	= &op_amd_fill_in_addresses,
+	.setup_ctrs		= &op_amd_setup_ctrs,
+	.check_ctrs		= &op_amd_check_ctrs,
+	.start			= &op_amd_start,
+	.stop			= &op_amd_stop,
+	.shutdown		= &op_amd_shutdown
 };