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Commit 7da6cd8b authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6

* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC32]: Revert f642b263.
  [SPARC64]: Need to clobber global reg vars in switch_to().
parents 13c926e0 efb89630
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+2 −1
Original line number Original line Diff line number Diff line
@@ -206,6 +206,7 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
#ifdef CONFIG_BLK_DEV_INITRD
#ifdef CONFIG_BLK_DEV_INITRD
	/* Now have to check initial ramdisk, so that bootmap does not overwrite it */
	/* Now have to check initial ramdisk, so that bootmap does not overwrite it */
	if (sparc_ramdisk_image) {
	if (sparc_ramdisk_image) {
		if (sparc_ramdisk_image >= (unsigned long)&_end - 2 * PAGE_SIZE)
			sparc_ramdisk_image -= KERNBASE;
			sparc_ramdisk_image -= KERNBASE;
		initrd_start = sparc_ramdisk_image + phys_base;
		initrd_start = sparc_ramdisk_image + phys_base;
		initrd_end = initrd_start + sparc_ramdisk_size;
		initrd_end = initrd_start + sparc_ramdisk_size;
+2 −2
Original line number Original line Diff line number Diff line
@@ -3,6 +3,8 @@


#include <linux/compiler.h>
#include <linux/compiler.h>


register unsigned long __local_per_cpu_offset asm("g5");

#ifdef CONFIG_SMP
#ifdef CONFIG_SMP


#define setup_per_cpu_areas()			do { } while (0)
#define setup_per_cpu_areas()			do { } while (0)
@@ -23,8 +25,6 @@ extern unsigned long __per_cpu_shift;
    __typeof__(type) per_cpu__##name				\
    __typeof__(type) per_cpu__##name				\
    ____cacheline_aligned_in_smp
    ____cacheline_aligned_in_smp


register unsigned long __local_per_cpu_offset asm("g5");

/* var is in discarded region: offset to particular copy we want */
/* var is in discarded region: offset to particular copy we want */
#define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu)))
#define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu)))
#define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset))
#define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset))
+13 −13
Original line number Original line Diff line number Diff line
@@ -141,7 +141,6 @@ do { \
	 * not preserve it's value.  Hairy, but it lets us remove 2 loads
	 * not preserve it's value.  Hairy, but it lets us remove 2 loads
	 * and 2 stores in this critical code path.  -DaveM
	 * and 2 stores in this critical code path.  -DaveM
	 */
	 */
#define EXTRA_CLOBBER ,"%l1"
#define switch_to(prev, next, last)					\
#define switch_to(prev, next, last)					\
do {	if (test_thread_flag(TIF_PERFCTR)) {				\
do {	if (test_thread_flag(TIF_PERFCTR)) {				\
		unsigned long __tmp;					\
		unsigned long __tmp;					\
@@ -164,33 +163,34 @@ do { if (test_thread_flag(TIF_PERFCTR)) { \
	"stx	%%i6, [%%sp + 2047 + 0x70]\n\t"				\
	"stx	%%i6, [%%sp + 2047 + 0x70]\n\t"				\
	"stx	%%i7, [%%sp + 2047 + 0x78]\n\t"				\
	"stx	%%i7, [%%sp + 2047 + 0x78]\n\t"				\
	"rdpr	%%wstate, %%o5\n\t"					\
	"rdpr	%%wstate, %%o5\n\t"					\
	"stx	%%o6, [%%g6 + %3]\n\t"					\
	"stx	%%o6, [%%g6 + %6]\n\t"					\
	"stb	%%o5, [%%g6 + %2]\n\t"					\
	"rdpr	%%cwp, %%o5\n\t"					\
	"stb	%%o5, [%%g6 + %5]\n\t"					\
	"stb	%%o5, [%%g6 + %5]\n\t"					\
	"mov	%1, %%g6\n\t"						\
	"rdpr	%%cwp, %%o5\n\t"					\
	"ldub	[%1 + %5], %%g1\n\t"					\
	"stb	%%o5, [%%g6 + %8]\n\t"					\
	"mov	%4, %%g6\n\t"						\
	"ldub	[%4 + %8], %%g1\n\t"					\
	"wrpr	%%g1, %%cwp\n\t"					\
	"wrpr	%%g1, %%cwp\n\t"					\
	"ldx	[%%g6 + %3], %%o6\n\t"					\
	"ldx	[%%g6 + %6], %%o6\n\t"					\
	"ldub	[%%g6 + %2], %%o5\n\t"					\
	"ldub	[%%g6 + %5], %%o5\n\t"					\
	"ldub	[%%g6 + %4], %%o7\n\t"					\
	"ldub	[%%g6 + %7], %%o7\n\t"					\
	"wrpr	%%o5, 0x0, %%wstate\n\t"				\
	"wrpr	%%o5, 0x0, %%wstate\n\t"				\
	"ldx	[%%sp + 2047 + 0x70], %%i6\n\t"				\
	"ldx	[%%sp + 2047 + 0x70], %%i6\n\t"				\
	"ldx	[%%sp + 2047 + 0x78], %%i7\n\t"				\
	"ldx	[%%sp + 2047 + 0x78], %%i7\n\t"				\
	"ldx	[%%g6 + %6], %%g4\n\t"					\
	"ldx	[%%g6 + %9], %%g4\n\t"					\
	"brz,pt %%o7, 1f\n\t"						\
	"brz,pt %%o7, 1f\n\t"						\
	" mov	%%g7, %0\n\t"						\
	" mov	%%g7, %0\n\t"						\
	"b,a ret_from_syscall\n\t"					\
	"b,a ret_from_syscall\n\t"					\
	"1:\n\t"							\
	"1:\n\t"							\
	: "=&r" (last)							\
	: "=&r" (last), "=r" (current), "=r" (current_thread_info_reg),	\
	  "=r" (__local_per_cpu_offset)					\
	: "0" (task_thread_info(next)),					\
	: "0" (task_thread_info(next)),					\
	  "i" (TI_WSTATE), "i" (TI_KSP), "i" (TI_NEW_CHILD),            \
	  "i" (TI_WSTATE), "i" (TI_KSP), "i" (TI_NEW_CHILD),            \
	  "i" (TI_CWP), "i" (TI_TASK)					\
	  "i" (TI_CWP), "i" (TI_TASK)					\
	: "cc",								\
	: "cc",								\
	        "g1", "g2", "g3",                   "g7",		\
	        "g1", "g2", "g3",                   "g7",		\
	              "l2", "l3", "l4", "l5", "l6", "l7",		\
	        "l1", "l2", "l3", "l4", "l5", "l6", "l7",		\
	  "i0", "i1", "i2", "i3", "i4", "i5",				\
	  "i0", "i1", "i2", "i3", "i4", "i5",				\
	  "o0", "o1", "o2", "o3", "o4", "o5",       "o7" EXTRA_CLOBBER);\
	  "o0", "o1", "o2", "o3", "o4", "o5",       "o7");		\
	/* If you fuck with this, update ret_from_syscall code too. */	\
	/* If you fuck with this, update ret_from_syscall code too. */	\
	if (test_thread_flag(TIF_PERFCTR)) {				\
	if (test_thread_flag(TIF_PERFCTR)) {				\
		write_pcr(current_thread_info()->pcr_reg);		\
		write_pcr(current_thread_info()->pcr_reg);		\