diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 4 | ||||
| -rw-r--r-- | drivers/char/sysrq.c | 2 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index f7ca8c55956..d2830f39d46 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -763,8 +763,11 @@ static int acpi_idle_bm_check(void) */ static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx) { + u64 perf_flags; + /* Don't trace irqs off for idle */ stop_critical_timings(); + perf_flags = hw_perf_save_disable(); if (cx->entry_method == ACPI_CSTATE_FFH) { /* Call into architectural FFH based C-state */ acpi_processor_ffh_cstate_enter(cx); @@ -779,6 +782,7 @@ static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx) gets asserted in time to freeze execution properly. */ unused = inl(acpi_gbl_FADT.xpm_timer_block.address); } + hw_perf_restore(perf_flags); start_critical_timings(); } diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c index b0a6a3e5192..aed2b2936ec 100644 --- a/drivers/char/sysrq.c +++ b/drivers/char/sysrq.c @@ -25,6 +25,7 @@ #include <linux/kbd_kern.h> #include <linux/proc_fs.h> #include <linux/quotaops.h> +#include <linux/perf_counter.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/suspend.h> @@ -243,6 +244,7 @@ static void sysrq_handle_showregs(int key, struct tty_struct *tty) struct pt_regs *regs = get_irq_regs(); if (regs) show_regs(regs); + perf_counter_print_debug(); } static struct sysrq_key_op sysrq_showregs_op = { .handler = sysrq_handle_showregs, |