Merge branch 'perf/core' into perf/uprobes

Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 31 insertions, 32 deletions

diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 3b2efc81f34..06264ae8ccd 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -2,7 +2,7 @@
  *  arch/s390/kernel/setup.c
  *
  *  S390 version
- *    Copyright (C) IBM Corp. 1999,2010
+ *    Copyright (C) IBM Corp. 1999,2012
  *    Author(s): Hartmut Penner (hp@de.ibm.com),
  *               Martin Schwidefsky (schwidefsky@de.ibm.com)
  *
@@ -50,7 +50,7 @@
 
 #include <asm/ipl.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
+#include <asm/facility.h>
 #include <asm/smp.h>
 #include <asm/mmu_context.h>
 #include <asm/cpcmd.h>
@@ -62,6 +62,8 @@
 #include <asm/ebcdic.h>
 #include <asm/kvm_virtio.h>
 #include <asm/diag.h>
+#include <asm/os_info.h>
+#include "entry.h"
 
 long psw_kernel_bits	= PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_ASC_PRIMARY |
 			  PSW_MASK_EA | PSW_MASK_BA;
@@ -351,8 +353,9 @@ static void setup_addressing_mode(void)
 	}
 }
 
-static void __init
-setup_lowcore(void)
+void *restart_stack __attribute__((__section__(".data")));
+
+static void __init setup_lowcore(void)
 {
 	struct _lowcore *lc;
 
@@ -363,7 +366,7 @@ setup_lowcore(void)
 	lc = __alloc_bootmem_low(LC_PAGES * PAGE_SIZE, LC_PAGES * PAGE_SIZE, 0);
 	lc->restart_psw.mask = psw_kernel_bits;
 	lc->restart_psw.addr =
-		PSW_ADDR_AMODE | (unsigned long) psw_restart_int_handler;
+		PSW_ADDR_AMODE | (unsigned long) restart_int_handler;
 	lc->external_new_psw.mask = psw_kernel_bits |
 		PSW_MASK_DAT | PSW_MASK_MCHECK;
 	lc->external_new_psw.addr =
@@ -412,6 +415,24 @@ setup_lowcore(void)
 	lc->last_update_timer = S390_lowcore.last_update_timer;
 	lc->last_update_clock = S390_lowcore.last_update_clock;
 	lc->ftrace_func = S390_lowcore.ftrace_func;
+
+	restart_stack = __alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0);
+	restart_stack += ASYNC_SIZE;
+
+	/*
+	 * Set up PSW restart to call ipl.c:do_restart(). Copy the relevant
+	 * restart data to the absolute zero lowcore. This is necesary if
+	 * PSW restart is done on an offline CPU that has lowcore zero.
+	 */
+	lc->restart_stack = (unsigned long) restart_stack;
+	lc->restart_fn = (unsigned long) do_restart;
+	lc->restart_data = 0;
+	lc->restart_source = -1UL;
+	memcpy(&S390_lowcore.restart_stack, &lc->restart_stack,
+	       4*sizeof(unsigned long));
+	copy_to_absolute_zero(&S390_lowcore.restart_psw,
+			      &lc->restart_psw, sizeof(psw_t));
+
 	set_prefix((u32)(unsigned long) lc);
 	lowcore_ptr[0] = lc;
 }
@@ -572,27 +593,6 @@ static void __init setup_memory_end(void)
 	}
 }
 
-void *restart_stack __attribute__((__section__(".data")));
-
-/*
- * Setup new PSW and allocate stack for PSW restart interrupt
- */
-static void __init setup_restart_psw(void)
-{
-	psw_t psw;
-
-	restart_stack = __alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0);
-	restart_stack += ASYNC_SIZE;
-
-	/*
-	 * Setup restart PSW for absolute zero lowcore. This is necesary
-	 * if PSW restart is done on an offline CPU that has lowcore zero
-	 */
-	psw.mask = PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_EA | PSW_MASK_BA;
-	psw.addr = PSW_ADDR_AMODE | (unsigned long) psw_restart_int_handler;
-	copy_to_absolute_zero(&S390_lowcore.restart_psw, &psw, sizeof(psw));
-}
-
 static void __init setup_vmcoreinfo(void)
 {
 #ifdef CONFIG_KEXEC
@@ -747,7 +747,7 @@ static void __init reserve_crashkernel(void)
 {
 #ifdef CONFIG_CRASH_DUMP
 	unsigned long long crash_base, crash_size;
-	char *msg;
+	char *msg = NULL;
 	int rc;
 
 	rc = parse_crashkernel(boot_command_line, memory_end, &crash_size,
@@ -779,11 +779,11 @@ static void __init reserve_crashkernel(void)
 	pr_info("Reserving %lluMB of memory at %lluMB "
 		"for crashkernel (System RAM: %luMB)\n",
 		crash_size >> 20, crash_base >> 20, memory_end >> 20);
+	os_info_crashkernel_add(crash_base, crash_size);
 #endif
 }
 
-static void __init
-setup_memory(void)
+static void __init setup_memory(void)
 {
         unsigned long bootmap_size;
 	unsigned long start_pfn, end_pfn;
@@ -1014,8 +1014,7 @@ static void __init setup_hwcaps(void)
  * was printed.
  */
 
-void __init
-setup_arch(char **cmdline_p)
+void __init setup_arch(char **cmdline_p)
 {
         /*
          * print what head.S has found out about the machine
@@ -1060,6 +1059,7 @@ setup_arch(char **cmdline_p)
 
 	parse_early_param();
 
+	os_info_init();
 	setup_ipl();
 	setup_memory_end();
 	setup_addressing_mode();
@@ -1068,7 +1068,6 @@ setup_arch(char **cmdline_p)
 	setup_memory();
 	setup_resources();
 	setup_vmcoreinfo();
-	setup_restart_psw();
 	setup_lowcore();
 
         cpu_init();