From: Suravee Suthikulpanit <[email protected]>

This patch declares pr_fmt for perf/amd_iommu, removes unnecessary
pr_debug, and clean up error messages.

Signed-off-by: Suravee Suthikulpanit <[email protected]>
---
 arch/x86/events/amd/iommu.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/arch/x86/events/amd/iommu.c b/arch/x86/events/amd/iommu.c
index 947ae8a..3e00925 100644
--- a/arch/x86/events/amd/iommu.c
+++ b/arch/x86/events/amd/iommu.c
@@ -11,6 +11,8 @@
  * published by the Free Software Foundation.
  */
 
+#define pr_fmt(fmt)    "perf/amd_iommu: " fmt
+
 #include <linux/perf_event.h>
 #include <linux/module.h>
 #include <linux/cpumask.h>
@@ -305,7 +307,6 @@ static void perf_iommu_start(struct perf_event *event, int 
flags)
                                                         struct perf_amd_iommu,
                                                         pmu);
 
-       pr_debug("perf: amd_iommu:perf_iommu_start\n");
        if (WARN_ON_ONCE(!(hwc->state & PERF_HES_STOPPED)))
                return;
 
@@ -381,8 +382,6 @@ static void perf_iommu_stop(struct perf_event *event, int 
flags)
        struct hw_perf_event *hwc = &event->hw;
        u64 config;
 
-       pr_debug("perf: amd_iommu:perf_iommu_stop\n");
-
        if (hwc->state & PERF_HES_UPTODATE)
                return;
 
@@ -404,7 +403,6 @@ static int perf_iommu_add(struct perf_event *event, int 
flags)
        struct perf_amd_iommu *perf_iommu =
                        container_of(event->pmu, struct perf_amd_iommu, pmu);
 
-       pr_debug("perf: amd_iommu:perf_iommu_add\n");
        event->hw.state = PERF_HES_UPTODATE | PERF_HES_STOPPED;
 
        /* request an iommu bank/counter */
@@ -425,7 +423,6 @@ static void perf_iommu_del(struct perf_event *event, int 
flags)
        struct perf_amd_iommu *perf_iommu =
                        container_of(event->pmu, struct perf_amd_iommu, pmu);
 
-       pr_debug("perf: amd_iommu:perf_iommu_del\n");
        perf_iommu_stop(event, PERF_EF_UPDATE);
 
        /* clear the assigned iommu bank/counter */
@@ -489,7 +486,7 @@ static __init int _init_perf_amd_iommu(
 
        /* Init events attributes */
        if (_init_events_attrs(perf_iommu) != 0)
-               pr_err("perf: amd_iommu: Only support raw events.\n");
+               pr_err("Only support raw events.\n");
 
        perf_iommu->max_banks = amd_iommu_pc_get_max_banks();
        perf_iommu->max_counters = amd_iommu_pc_get_max_counters();
@@ -514,10 +511,10 @@ static __init int _init_perf_amd_iommu(
 
        ret = perf_pmu_register(&perf_iommu->pmu, name, -1);
        if (ret) {
-               pr_err("perf: amd_iommu: Failed to initialized.\n");
+               pr_err("Error initializing AMD IOMMU perf counters.\n");
                amd_iommu_pc_exit();
        } else {
-               pr_info("perf: amd_iommu: Detected. (%d banks, %d 
counters/bank)\n",
+               pr_info("Detected. (%d banks, %d counters/bank)\n",
                        amd_iommu_pc_get_max_banks(),
                        amd_iommu_pc_get_max_counters());
        }
-- 
2.5.0

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