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| author | Ingo Molnar | 2008-12-13 09:00:03 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2008-12-14 20:30:48 +0100 |
| commit | ee06094f8279e1312fc0a31591320cc7b6f0ab1e (patch) | |
| tree | aecf8f2177b2398e4db8df68a9705009b31a8ef7 /include/linux/perf_counter.h | |
| parent | x86: implement atomic64_t on 32-bit (diff) | |
| download | kernel-qcow2-linux-ee06094f8279e1312fc0a31591320cc7b6f0ab1e.tar.gz kernel-qcow2-linux-ee06094f8279e1312fc0a31591320cc7b6f0ab1e.tar.xz kernel-qcow2-linux-ee06094f8279e1312fc0a31591320cc7b6f0ab1e.zip | |
perfcounters: restructure x86 counter math
Impact: restructure code
Change counter math from absolute values to clear delta logic.
We try to extract elapsed deltas from the raw hw counter - and put
that into the generic counter.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/perf_counter.h')
| -rw-r--r-- | include/linux/perf_counter.h | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index 8cb095fa442c..72460289c654 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -91,14 +91,16 @@ struct perf_counter_hw_event { * struct hw_perf_counter - performance counter hardware details: */ struct hw_perf_counter { +#ifdef CONFIG_PERF_COUNTERS u64 config; unsigned long config_base; unsigned long counter_base; int nmi; unsigned int idx; - u64 prev_count; + atomic64_t prev_count; u64 irq_period; - s32 next_count; + atomic64_t period_left; +#endif }; /* @@ -140,17 +142,15 @@ enum perf_counter_active_state { * struct perf_counter - performance counter kernel representation: */ struct perf_counter { +#ifdef CONFIG_PERF_COUNTERS struct list_head list_entry; struct list_head sibling_list; struct perf_counter *group_leader; const struct hw_perf_counter_ops *hw_ops; enum perf_counter_active_state state; -#if BITS_PER_LONG == 64 atomic64_t count; -#else - atomic_t count32[2]; -#endif + struct perf_counter_hw_event hw_event; struct hw_perf_counter hw; @@ -172,6 +172,7 @@ struct perf_counter { struct perf_data *irqdata; struct perf_data *usrdata; struct perf_data data[2]; +#endif }; /** @@ -220,8 +221,6 @@ extern void perf_counter_notify(struct pt_regs *regs); extern void perf_counter_print_debug(void); extern u64 hw_perf_save_disable(void); extern void hw_perf_restore(u64 ctrl); -extern void atomic64_counter_set(struct perf_counter *counter, u64 val64); -extern u64 atomic64_counter_read(struct perf_counter *counter); extern int perf_counter_task_disable(void); extern int perf_counter_task_enable(void); |