oprofile/x86: use kzalloc() instead of kmalloc()

Cc: stable@kernel.org
Signed-off-by: Robert Richter <robert.richter@amd.com>

diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index 7170d1e..2c505ee 100644 (file)
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -159,7 +159,7 @@ static int nmi_setup_mux(void)
 
        for_each_possible_cpu(i) {
                per_cpu(cpu_msrs, i).multiplex =
-                       kmalloc(multiplex_size, GFP_KERNEL);
+                       kzalloc(multiplex_size, GFP_KERNEL);
                if (!per_cpu(cpu_msrs, i).multiplex)
                        return 0;
        }
@@ -304,11 +304,11 @@ static int allocate_msrs(void)
 
        int i;
        for_each_possible_cpu(i) {
-               per_cpu(cpu_msrs, i).counters = kmalloc(counters_size,
+               per_cpu(cpu_msrs, i).counters = kzalloc(counters_size,
                                                        GFP_KERNEL);
                if (!per_cpu(cpu_msrs, i).counters)
                        return 0;
-               per_cpu(cpu_msrs, i).controls = kmalloc(controls_size,
+               per_cpu(cpu_msrs, i).controls = kzalloc(controls_size,
                                                        GFP_KERNEL);
                if (!per_cpu(cpu_msrs, i).controls)
                        return 0;

diff --git a/arch/x86/oprofile/op_model_amd.c b/arch/x86/oprofile/op_model_amd.c
index 2aab018..f4ebc45 100644 (file)
--- a/arch/x86/oprofile/op_model_amd.c
+++ b/arch/x86/oprofile/op_model_amd.c
@@ -147,15 +147,11 @@ static void op_amd_fill_in_addresses(struct op_msrs * const msrs)
        for (i = 0; i < NUM_COUNTERS; i++) {
                if (reserve_perfctr_nmi(MSR_K7_PERFCTR0 + i))
                        msrs->counters[i].addr = MSR_K7_PERFCTR0 + i;
-               else
-                       msrs->counters[i].addr = 0;
        }
 
        for (i = 0; i < NUM_CONTROLS; i++) {
                if (reserve_evntsel_nmi(MSR_K7_EVNTSEL0 + i))
                        msrs->controls[i].addr = MSR_K7_EVNTSEL0 + i;
-               else
-                       msrs->controls[i].addr = 0;
        }
 }
 

diff --git a/arch/x86/oprofile/op_model_p4.c b/arch/x86/oprofile/op_model_p4.c
index ac6b354..e6a160a 100644 (file)
--- a/arch/x86/oprofile/op_model_p4.c
+++ b/arch/x86/oprofile/op_model_p4.c
@@ -394,12 +394,6 @@ static void p4_fill_in_addresses(struct op_msrs * const msrs)
        setup_num_counters();
        stag = get_stagger();
 
-       /* initialize some registers */
-       for (i = 0; i < num_counters; ++i)
-               msrs->counters[i].addr = 0;
-       for (i = 0; i < num_controls; ++i)
-               msrs->controls[i].addr = 0;
-
        /* the counter & cccr registers we pay attention to */
        for (i = 0; i < num_counters; ++i) {
                addr = p4_counters[VIRT_CTR(stag, i)].counter_address;

diff --git a/arch/x86/oprofile/op_model_ppro.c b/arch/x86/oprofile/op_model_ppro.c
index c344525..5d1727b 100644 (file)
--- a/arch/x86/oprofile/op_model_ppro.c
+++ b/arch/x86/oprofile/op_model_ppro.c
@@ -37,15 +37,11 @@ static void ppro_fill_in_addresses(struct op_msrs * const msrs)
        for (i = 0; i < num_counters; i++) {
                if (reserve_perfctr_nmi(MSR_P6_PERFCTR0 + i))
                        msrs->counters[i].addr = MSR_P6_PERFCTR0 + i;
-               else
-                       msrs->counters[i].addr = 0;
        }
 
        for (i = 0; i < num_counters; i++) {
                if (reserve_evntsel_nmi(MSR_P6_EVNTSEL0 + i))
                        msrs->controls[i].addr = MSR_P6_EVNTSEL0 + i;
-               else
-                       msrs->controls[i].addr = 0;
        }
 }
 
@@ -57,7 +53,7 @@ static void ppro_setup_ctrs(struct op_x86_model_spec const *model,
        int i;
 
        if (!reset_value) {
-               reset_value = kmalloc(sizeof(reset_value[0]) * num_counters,
+               reset_value = kzalloc(sizeof(reset_value[0]) * num_counters,
                                        GFP_ATOMIC);
                if (!reset_value)
                        return;