diff options
| author | Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | 2011-03-16 19:05:04 -0400 |
|---|---|---|
| committer | Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> | 2011-03-16 19:05:04 -0400 |
| commit | 3193831d2691005218752ef95b10f3afee1086d1 (patch) | |
| tree | d3a423f12b4e0f63ee923c55bcae06527091c7f8 /arch/x86/kernel | |
| parent | ba7ed7f55c38797ea58774d621a5964e85edfd91 (diff) | |
lttng-statedump/lttng-statedump-x86
lttng statedump x86
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/syscall_64.c | 17 | ||||
| -rw-r--r-- | arch/x86/kernel/traps.c | 36 |
2 files changed, 53 insertions, 0 deletions
diff --git a/arch/x86/kernel/syscall_64.c b/arch/x86/kernel/syscall_64.c index de87d600829..bbbffe0c2c3 100644 --- a/arch/x86/kernel/syscall_64.c +++ b/arch/x86/kernel/syscall_64.c @@ -1,8 +1,11 @@ /* System call table for x86-64. */ #include <linux/linkage.h> +#include <linux/module.h> #include <linux/sys.h> #include <linux/cache.h> +#include <linux/marker.h> +#include <linux/kallsyms.h> #include <asm/asm-offsets.h> #define __NO_STUBS @@ -27,3 +30,17 @@ const sys_call_ptr_t sys_call_table[__NR_syscall_max+1] = { [0 ... __NR_syscall_max] = &sys_ni_syscall, #include <asm/unistd_64.h> }; + +void ltt_dump_sys_call_table(void *call_data) +{ + int i; + char namebuf[KSYM_NAME_LEN]; + + for (i = 0; i < __NR_syscall_max + 1; i++) { + sprint_symbol(namebuf, (unsigned long)sys_call_table[i]); + __trace_mark(0, statedump_sys_call_table, call_data, + "id %d address %p symbol %s", + i, (void*)sys_call_table[i], namebuf); + } +} +EXPORT_SYMBOL_GPL(ltt_dump_sys_call_table); diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index 4dfa969c88c..75545e51b1d 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -53,6 +53,7 @@ #include <asm/atomic.h> #include <asm/system.h> #include <asm/traps.h> +#include <asm/unistd.h> #include <asm/desc.h> #include <asm/i387.h> #include <asm/mce.h> @@ -77,6 +78,10 @@ char ignore_fpu_irq; * F0 0F bug workaround. */ gate_desc idt_table[NR_VECTORS] __page_aligned_data = { { { { 0, 0 } } }, }; + +extern unsigned long sys_call_table[]; +extern unsigned long syscall_table_size; + #endif DECLARE_BITMAP(used_vectors, NR_VECTORS); @@ -622,6 +627,22 @@ dotraplinkage void __kprobes do_debug(struct pt_regs *regs, long error_code) return; } +#ifdef CONFIG_X86_32 +void ltt_dump_sys_call_table(void *call_data) +{ + int i; + char namebuf[KSYM_NAME_LEN]; + + for (i = 0; i < NR_syscalls; i++) { + sprint_symbol(namebuf, sys_call_table[i]); + __trace_mark(0, statedump_sys_call_table, call_data, + "id %d address %p symbol %s", + i, (void*)sys_call_table[i], namebuf); + } +} +EXPORT_SYMBOL_GPL(ltt_dump_sys_call_table); +#endif + /* * Note that we play around with the 'TS' bit in an attempt to get * the correct behaviour even in the presence of the asynchronous @@ -766,6 +787,21 @@ void __math_state_restore(void) tsk->fpu_counter++; } +void ltt_dump_idt_table(void *call_data) +{ + int i; + char namebuf[KSYM_NAME_LEN]; + + for (i = 0; i < IDT_ENTRIES; i++) { + unsigned long address = gate_offset(idt_table[i]); + sprint_symbol(namebuf, address); + __trace_mark(0, statedump_idt_table, call_data, + "irq %d address %p symbol %s", + i, (void *)address, namebuf); + } +} +EXPORT_SYMBOL_GPL(ltt_dump_idt_table); + /* * 'math_state_restore()' saves the current math information in the * old math state array, and gets the new ones from the current task |