diff options
| author | Jason Yeh <jason.yeh@amd.com> | 2008-07-23 23:05:53 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-26 11:48:16 +0200 |
| commit | 1a960b402a51d80abf54e3f8e4972374ffe5f22d (patch) | |
| tree | 108222afe94df145e7a71f44bb077067c35f0131 /arch/x86/oprofile/op_counter.h | |
| parent | 6852fd9b86d05063c6ef49d2e12e061cc7f6a105 (diff) | |
Oprofile Multiplexing Patch
This patch introduces multiplexing support for the Oprofile kernel
module. It basically adds a new function pointer in oprofile_operator
allowing each architecture to supply its callback to switch between
different sets of event when the timer expires. Userspace tools can
modify the time slice through /dev/oprofile/time_slice.
It also modifies the number of counters exposed to the userspace through
/dev/oprofile. For example, the number of counters for AMD CPUs are
changed to 32 and multiplexed in the sets of 4.
Signed-off-by: Jason Yeh <jason.yeh@amd.com>
Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: oprofile-list <oprofile-list@lists.sourceforge.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/oprofile/op_counter.h')
| -rw-r--r-- | arch/x86/oprofile/op_counter.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/oprofile/op_counter.h b/arch/x86/oprofile/op_counter.h index 2880b15c467..786d6e01cf7 100644 --- a/arch/x86/oprofile/op_counter.h +++ b/arch/x86/oprofile/op_counter.h @@ -10,13 +10,14 @@ #ifndef OP_COUNTER_H #define OP_COUNTER_H -#define OP_MAX_COUNTER 8 +#define OP_MAX_COUNTER 32 /* Per-perfctr configuration as set via * oprofilefs. */ struct op_counter_config { unsigned long count; + unsigned long save_count_low; unsigned long enabled; unsigned long event; unsigned long kernel; |