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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2010-06-11 13:35:08 +0200
committerIngo Molnar <mingo@elte.hu>2010-09-09 20:46:28 +0200
commitb0a873ebbf87bf38bf70b5e39a7cadc96099fa13 (patch)
tree63ab672b847aed295f99b9b2a3bbcfd5d3d35bd9 /kernel/hw_breakpoint.c
parent51b0fe39549a04858001922919ab355dee9bdfcf (diff)
perf: Register PMU implementations
Simple registration interface for struct pmu, this provides the infrastructure for removing all the weak functions. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: paulus <paulus@samba.org> Cc: stephane eranian <eranian@googlemail.com> Cc: Robert Richter <robert.richter@amd.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Lin Ming <ming.m.lin@intel.com> Cc: Yanmin <yanmin_zhang@linux.intel.com> Cc: Deng-Cheng Zhu <dengcheng.zhu@gmail.com> Cc: David Miller <davem@davemloft.net> Cc: Michael Cree <mcree@orcon.net.nz> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/hw_breakpoint.c')
-rw-r--r--kernel/hw_breakpoint.c35
1 files changed, 30 insertions, 5 deletions
diff --git a/kernel/hw_breakpoint.c b/kernel/hw_breakpoint.c
index d71a987fd2bf..e9c5cfa1fd20 100644
--- a/kernel/hw_breakpoint.c
+++ b/kernel/hw_breakpoint.c
@@ -565,6 +565,34 @@ static struct notifier_block hw_breakpoint_exceptions_nb = {
.priority = 0x7fffffff
};
+static void bp_perf_event_destroy(struct perf_event *event)
+{
+ release_bp_slot(event);
+}
+
+static int hw_breakpoint_event_init(struct perf_event *bp)
+{
+ int err;
+
+ if (bp->attr.type != PERF_TYPE_BREAKPOINT)
+ return -ENOENT;
+
+ err = register_perf_hw_breakpoint(bp);
+ if (err)
+ return err;
+
+ bp->destroy = bp_perf_event_destroy;
+
+ return 0;
+}
+
+static struct pmu perf_breakpoint = {
+ .event_init = hw_breakpoint_event_init,
+ .enable = arch_install_hw_breakpoint,
+ .disable = arch_uninstall_hw_breakpoint,
+ .read = hw_breakpoint_pmu_read,
+};
+
static int __init init_hw_breakpoint(void)
{
unsigned int **task_bp_pinned;
@@ -586,6 +614,8 @@ static int __init init_hw_breakpoint(void)
constraints_initialized = 1;
+ perf_pmu_register(&perf_breakpoint);
+
return register_die_notifier(&hw_breakpoint_exceptions_nb);
err_alloc:
@@ -601,8 +631,3 @@ static int __init init_hw_breakpoint(void)
core_initcall(init_hw_breakpoint);
-struct pmu perf_ops_bp = {
- .enable = arch_install_hw_breakpoint,
- .disable = arch_uninstall_hw_breakpoint,
- .read = hw_breakpoint_pmu_read,
-};