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oprofile: Grouping multiplexing code in op_model_amd.c

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This patch moves some multiplexing code to the new function
op_mux_fill_in_addresses(). Also, the whole multiplexing code is now
at a single location.

Signed-off-by: Robert Richter <robert.richter@amd.com>
This commit is contained in:
Robert Richter 2009-07-16 13:09:53 +02:00
parent d8471ad3ab
commit 7e7478c6bc
1 changed files with 41 additions and 34 deletions
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75
arch/x86/oprofile/op_model_amd.c
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@ -74,6 +74,45 @@ static struct op_ibs_config ibs_config;
#endif
#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
static void op_mux_fill_in_addresses(struct op_msrs * const msrs)
{
int i;
for (i = 0; i < NUM_VIRT_COUNTERS; i++) {
int hw_counter = i % NUM_COUNTERS;
if (reserve_perfctr_nmi(MSR_K7_PERFCTR0 + i))
msrs->multiplex[i].addr = MSR_K7_PERFCTR0 + hw_counter;
else
msrs->multiplex[i].addr = 0;
}
}
static void op_mux_switch_ctrl(struct op_x86_model_spec const *model,
struct op_msrs const * const msrs)
{
u64 val;
int i;
/* enable active counters */
for (i = 0; i < NUM_COUNTERS; ++i) {
int virt = op_x86_phys_to_virt(i);
if (!counter_config[virt].enabled)
continue;
rdmsrl(msrs->controls[i].addr, val);
val &= model->reserved;
val |= op_x86_get_ctrl(model, &counter_config[virt]);
wrmsrl(msrs->controls[i].addr, val);
}
}
#else
static inline void op_mux_fill_in_addresses(struct op_msrs * const msrs) { }
#endif
/* functions for op_amd_spec */
static void op_amd_fill_in_addresses(struct op_msrs * const msrs)
@ -94,15 +133,7 @@ static void op_amd_fill_in_addresses(struct op_msrs * const msrs)
msrs->controls[i].addr = 0;
}
#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
for (i = 0; i < NUM_VIRT_COUNTERS; i++) {
int hw_counter = i % NUM_COUNTERS;
if (reserve_perfctr_nmi(MSR_K7_PERFCTR0 + i))
msrs->multiplex[i].addr = MSR_K7_PERFCTR0 + hw_counter;
else
msrs->multiplex[i].addr = 0;
}
#endif
op_mux_fill_in_addresses(msrs);
}
static void op_amd_setup_ctrs(struct op_x86_model_spec const *model,
@ -155,30 +186,6 @@ static void op_amd_setup_ctrs(struct op_x86_model_spec const *model,
}
}
#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
static void op_amd_switch_ctrl(struct op_x86_model_spec const *model,
struct op_msrs const * const msrs)
{
u64 val;
int i;
/* enable active counters */
for (i = 0; i < NUM_COUNTERS; ++i) {
int virt = op_x86_phys_to_virt(i);
if (!counter_config[virt].enabled)
continue;
rdmsrl(msrs->controls[i].addr, val);
val &= model->reserved;
val |= op_x86_get_ctrl(model, &counter_config[virt]);
wrmsrl(msrs->controls[i].addr, val);
}
}
#endif
#ifdef CONFIG_OPROFILE_IBS
static inline int
@ -535,6 +542,6 @@ struct op_x86_model_spec const op_amd_spec = {
.stop = &op_amd_stop,
.shutdown = &op_amd_shutdown,
#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
.switch_ctrl = &op_amd_switch_ctrl,
.switch_ctrl = &op_mux_switch_ctrl,
#endif
};