diff options
| -rw-r--r-- | arch/x86_64/kernel/vmlinux.lds.S | 7 | ||||
| -rw-r--r-- | drivers/base/power/trace.c | 5 | ||||
| -rw-r--r-- | include/asm-i386/resume-trace.h | 13 | ||||
| -rw-r--r-- | include/asm-x86_64/resume-trace.h | 13 | ||||
| -rw-r--r-- | include/linux/resume-trace.h | 19 | ||||
| -rw-r--r-- | kernel/power/Kconfig | 2 |
6 files changed, 43 insertions, 16 deletions
diff --git a/arch/x86_64/kernel/vmlinux.lds.S b/arch/x86_64/kernel/vmlinux.lds.S index c2d5a840cb1a..8778848000c2 100644 --- a/arch/x86_64/kernel/vmlinux.lds.S +++ b/arch/x86_64/kernel/vmlinux.lds.S @@ -54,6 +54,13 @@ SECTIONS RODATA + . = ALIGN(4); + .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { + __tracedata_start = .; + *(.tracedata) + __tracedata_end = .; + } + . = ALIGN(PAGE_SIZE); /* Align data segment to page size boundary */ /* Data */ .data : AT(ADDR(.data) - LOAD_OFFSET) { diff --git a/drivers/base/power/trace.c b/drivers/base/power/trace.c index a9ab30fefffc..2b0c601e422e 100644 --- a/drivers/base/power/trace.c +++ b/drivers/base/power/trace.c @@ -142,6 +142,7 @@ void set_trace_device(struct device *dev) { dev_hash_value = hash_string(DEVSEED, dev->bus_id, DEVHASH); } +EXPORT_SYMBOL(set_trace_device); /* * We could just take the "tracedata" index into the .tracedata @@ -162,6 +163,7 @@ void generate_resume_trace(void *tracedata, unsigned int user) file_hash_value = hash_string(lineno, file, FILEHASH); set_magic_time(user_hash_value, file_hash_value, dev_hash_value); } +EXPORT_SYMBOL(generate_resume_trace); extern char __tracedata_start, __tracedata_end; static int show_file_hash(unsigned int value) @@ -170,7 +172,8 @@ static int show_file_hash(unsigned int value) char *tracedata; match = 0; - for (tracedata = &__tracedata_start ; tracedata < &__tracedata_end ; tracedata += 6) { + for (tracedata = &__tracedata_start ; tracedata < &__tracedata_end ; + tracedata += 2 + sizeof(unsigned long)) { unsigned short lineno = *(unsigned short *)tracedata; const char *file = *(const char **)(tracedata + 2); unsigned int hash = hash_string(lineno, file, FILEHASH); diff --git a/include/asm-i386/resume-trace.h b/include/asm-i386/resume-trace.h new file mode 100644 index 000000000000..ec9cfd656230 --- /dev/null +++ b/include/asm-i386/resume-trace.h @@ -0,0 +1,13 @@ +#define TRACE_RESUME(user) do { \ + if (pm_trace_enabled) { \ + void *tracedata; \ + asm volatile("movl $1f,%0\n" \ + ".section .tracedata,\"a\"\n" \ + "1:\t.word %c1\n" \ + "\t.long %c2\n" \ + ".previous" \ + :"=r" (tracedata) \ + : "i" (__LINE__), "i" (__FILE__)); \ + generate_resume_trace(tracedata, user); \ + } \ +} while (0) diff --git a/include/asm-x86_64/resume-trace.h b/include/asm-x86_64/resume-trace.h new file mode 100644 index 000000000000..34bf998fdf62 --- /dev/null +++ b/include/asm-x86_64/resume-trace.h @@ -0,0 +1,13 @@ +#define TRACE_RESUME(user) do { \ + if (pm_trace_enabled) { \ + void *tracedata; \ + asm volatile("movq $1f,%0\n" \ + ".section .tracedata,\"a\"\n" \ + "1:\t.word %c1\n" \ + "\t.quad %c2\n" \ + ".previous" \ + :"=r" (tracedata) \ + : "i" (__LINE__), "i" (__FILE__)); \ + generate_resume_trace(tracedata, user); \ + } \ +} while (0) diff --git a/include/linux/resume-trace.h b/include/linux/resume-trace.h index 81e9299ca148..f3f4f28c6960 100644 --- a/include/linux/resume-trace.h +++ b/include/linux/resume-trace.h @@ -2,6 +2,7 @@ #define RESUME_TRACE_H #ifdef CONFIG_PM_TRACE +#include <asm/resume-trace.h> extern int pm_trace_enabled; @@ -9,20 +10,10 @@ struct device; extern void set_trace_device(struct device *); extern void generate_resume_trace(void *tracedata, unsigned int user); -#define TRACE_DEVICE(dev) set_trace_device(dev) -#define TRACE_RESUME(user) do { \ - if (pm_trace_enabled) { \ - void *tracedata; \ - asm volatile("movl $1f,%0\n" \ - ".section .tracedata,\"a\"\n" \ - "1:\t.word %c1\n" \ - "\t.long %c2\n" \ - ".previous" \ - :"=r" (tracedata) \ - : "i" (__LINE__), "i" (__FILE__)); \ - generate_resume_trace(tracedata, user); \ - } \ -} while (0) +#define TRACE_DEVICE(dev) do { \ + if (pm_trace_enabled) \ + set_trace_device(dev); \ + } while(0) #else diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index 7358609e4735..c1a106d87d90 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -57,7 +57,7 @@ config DISABLE_CONSOLE_SUSPEND config PM_TRACE bool "Suspend/resume event tracing" - depends on PM_DEBUG && X86_32 && EXPERIMENTAL + depends on PM_DEBUG && X86 && EXPERIMENTAL default n ---help--- This enables some cheesy code to save the last PM event point in the |