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authorJason Yeh <jason.yeh@amd.com>2008-07-23 23:05:53 +0200
committerIngo Molnar <mingo@elte.hu>2008-07-26 11:48:16 +0200
commit1a960b402a51d80abf54e3f8e4972374ffe5f22d (patch)
tree108222afe94df145e7a71f44bb077067c35f0131 /arch/x86/oprofile/op_model_p4.c
parent6852fd9b86d05063c6ef49d2e12e061cc7f6a105 (diff)
downloadop-kernel-dev-1a960b402a51d80abf54e3f8e4972374ffe5f22d.zip
op-kernel-dev-1a960b402a51d80abf54e3f8e4972374ffe5f22d.tar.gz
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_model_p4.c')
-rw-r--r--arch/x86/oprofile/op_model_p4.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/oprofile/op_model_p4.c b/arch/x86/oprofile/op_model_p4.c
index 56b4757..e641545 100644
--- a/arch/x86/oprofile/op_model_p4.c
+++ b/arch/x86/oprofile/op_model_p4.c
@@ -701,6 +701,8 @@ static void p4_shutdown(struct op_msrs const * const msrs)
struct op_x86_model_spec const op_p4_ht2_spec = {
.num_counters = NUM_COUNTERS_HT2,
.num_controls = NUM_CONTROLS_HT2,
+ .num_hardware_counters = NUM_COUNTERS_HT2,
+ .num_hardware_controls = NUM_CONTROLS_HT2,
.fill_in_addresses = &p4_fill_in_addresses,
.setup_ctrs = &p4_setup_ctrs,
.check_ctrs = &p4_check_ctrs,
@@ -713,6 +715,8 @@ struct op_x86_model_spec const op_p4_ht2_spec = {
struct op_x86_model_spec const op_p4_spec = {
.num_counters = NUM_COUNTERS_NON_HT,
.num_controls = NUM_CONTROLS_NON_HT,
+ .num_hardware_counters = NUM_COUNTERS_NON_HT,
+ .num_hardware_controls = NUM_CONTROLS_NON_HT,
.fill_in_addresses = &p4_fill_in_addresses,
.setup_ctrs = &p4_setup_ctrs,
.check_ctrs = &p4_check_ctrs,
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