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>

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,
-};