diff options
| -rw-r--r-- | arch/x86/oprofile/op_model_amd.c | 31 | ||||
| -rw-r--r-- | drivers/oprofile/cpu_buffer.c | 25 |
2 files changed, 32 insertions, 24 deletions
diff --git a/arch/x86/oprofile/op_model_amd.c b/arch/x86/oprofile/op_model_amd.c index 509513760a6..fb67e1999d8 100644 --- a/arch/x86/oprofile/op_model_amd.c +++ b/arch/x86/oprofile/op_model_amd.c @@ -65,8 +65,10 @@ static unsigned long reset_value[NUM_COUNTERS]; #define IBS_FETCH_BEGIN 3 #define IBS_OP_BEGIN 4 -/* The function interface needs to be fixed, something like add - data. Should then be added to linux/oprofile.h. */ +/* + * The function interface needs to be fixed, something like add + * data. Should then be added to linux/oprofile.h. + */ extern void oprofile_add_ibs_sample(struct pt_regs *const regs, unsigned int *const ibs_sample, int ibs_code); @@ -106,7 +108,7 @@ struct ibs_op_sample { /* * unitialize the APIC for the IBS interrupts if needed on AMD Family10h+ -*/ + */ static void clear_ibs_nmi(void); static int ibs_allowed; /* AMD Family10h and later */ @@ -223,7 +225,7 @@ op_amd_handle_ibs(struct pt_regs * const regs, (unsigned int *)&ibs_fetch, IBS_FETCH_BEGIN); - /*reenable the IRQ */ + /* reenable the IRQ */ rdmsr(MSR_AMD64_IBSFETCHCTL, low, high); high &= ~IBS_FETCH_HIGH_VALID_BIT; high |= IBS_FETCH_HIGH_ENABLE; @@ -331,8 +333,10 @@ static void op_amd_stop(struct op_msrs const * const msrs) unsigned int low, high; int i; - /* Subtle: stop on all counters to avoid race with - * setting our pm callback */ + /* + * Subtle: stop on all counters to avoid race with setting our + * pm callback + */ for (i = 0 ; i < NUM_COUNTERS ; ++i) { if (!reset_value[i]) continue; @@ -343,13 +347,15 @@ static void op_amd_stop(struct op_msrs const * const msrs) #ifdef CONFIG_OPROFILE_IBS if (ibs_allowed && ibs_config.fetch_enabled) { - low = 0; /* clear max count and enable */ + /* clear max count and enable */ + low = 0; high = 0; wrmsr(MSR_AMD64_IBSFETCHCTL, low, high); } if (ibs_allowed && ibs_config.op_enabled) { - low = 0; /* clear max count and enable */ + /* clear max count and enable */ + low = 0; high = 0; wrmsr(MSR_AMD64_IBSOPCTL, low, high); } @@ -443,10 +449,7 @@ static int pfm_amd64_setup_eilvt(void) return 0; } -/* - * initialize the APIC for the IBS interrupts - * if available (AMD Family10h rev B0 and later) - */ +/* initialize the APIC for the IBS interrupts if available */ static void setup_ibs(void) { ibs_allowed = boot_cpu_has(X86_FEATURE_IBS); @@ -463,9 +466,7 @@ static void setup_ibs(void) } -/* - * unitialize the APIC for the IBS interrupts if needed on AMD Family10h - * rev B0 and later */ +/* uninitialize the APIC for the IBS interrupts if needed */ static void clear_ibs_nmi(void) { if (ibs_allowed) diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c index 01d38e78cde..3958107723f 100644 --- a/drivers/oprofile/cpu_buffer.c +++ b/drivers/oprofile/cpu_buffer.c @@ -127,9 +127,10 @@ void end_cpu_work(void) /* Resets the cpu buffer to a sane state. */ void cpu_buffer_reset(struct oprofile_cpu_buffer *cpu_buf) { - /* reset these to invalid values; the next sample - * collected will populate the buffer with proper - * values to initialize the buffer + /* + * reset these to invalid values; the next sample collected + * will populate the buffer with proper values to initialize + * the buffer */ cpu_buf->last_is_kernel = -1; cpu_buf->last_task = NULL; @@ -151,8 +152,10 @@ static void increment_head(struct oprofile_cpu_buffer *b) { unsigned long new_head = b->head_pos + 1; - /* Ensure anything written to the slot before we - * increment is visible */ + /* + * Ensure anything written to the slot before we increment is + * visible + */ wmb(); if (new_head < b->buffer_size) @@ -253,8 +256,10 @@ void oprofile_add_ext_sample(unsigned long pc, struct pt_regs * const regs, if (!oprofile_begin_trace(cpu_buf)) return; - /* if log_sample() fail we can't backtrace since we lost the source - * of this event */ + /* + * if log_sample() fail we can't backtrace since we lost the + * source of this event + */ if (log_sample(cpu_buf, pc, is_kernel, event)) oprofile_ops.backtrace(regs, backtrace_depth); oprofile_end_trace(cpu_buf); @@ -338,8 +343,10 @@ void oprofile_add_trace(unsigned long pc) return; } - /* broken frame can give an eip with the same value as an escape code, - * abort the trace if we get it */ + /* + * broken frame can give an eip with the same value as an + * escape code, abort the trace if we get it + */ if (pc == ESCAPE_CODE) { cpu_buf->tracing = 0; cpu_buf->backtrace_aborted++; |