Commit-ID: 44ab9a6b0e909145d42615493952fe986b1ce5c2
Gitweb: http://git.kernel.org/tip/44ab9a6b0e909145d42615493952fe986b1ce5c2
Author: Robert Richter <robert.richter@xxxxxxx>
AuthorDate: Thu, 9 Jul 2009 18:33:02 +0200
Committer: Robert Richter <robert.richter@xxxxxxx>
CommitDate: Tue, 14 Jul 2009 16:44:51 +0200
x86/oprofile: Rework and simplify nmi_cpu_setup()
This patch removes the function nmi_save_registers(). Per-cpu code is
now executed only in the function nmi_cpu_setup(). Also, it renames
the per-cpu function nmi_restore_registers() to
nmi_cpu_restore_registers().
Signed-off-by: Robert Richter <robert.richter@xxxxxxx>
---
arch/x86/oprofile/nmi_int.c | 13 +++----------
1 files changed, 3 insertions(+), 10 deletions(-)
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index 93df76d..25da1e1 100644
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -87,13 +87,6 @@ static void nmi_cpu_save_registers(struct op_msrs *msrs)
}
}
-static void nmi_save_registers(void *dummy)
-{
- int cpu = smp_processor_id();
- struct op_msrs *msrs = &per_cpu(cpu_msrs, cpu);
- nmi_cpu_save_registers(msrs);
-}
-
static void free_msrs(void)
{
int i;
@@ -137,6 +130,7 @@ static void nmi_cpu_setup(void *dummy)
{
int cpu = smp_processor_id();
struct op_msrs *msrs = &per_cpu(cpu_msrs, cpu);
+ nmi_cpu_save_registers(msrs);
spin_lock(&oprofilefs_lock);
model->setup_ctrs(model, msrs);
spin_unlock(&oprofilefs_lock);
@@ -182,13 +176,12 @@ static int nmi_setup(void)
}
}
- on_each_cpu(nmi_save_registers, NULL, 1);
on_each_cpu(nmi_cpu_setup, NULL, 1);
nmi_enabled = 1;
return 0;
}
-static void nmi_restore_registers(struct op_msrs *msrs)
+static void nmi_cpu_restore_registers(struct op_msrs *msrs)
{
struct op_msr *counters = msrs->counters;
struct op_msr *controls = msrs->controls;
@@ -220,7 +213,7 @@ static void nmi_cpu_shutdown(void *dummy)
apic_write(APIC_LVTERR, v | APIC_LVT_MASKED);
apic_write(APIC_LVTPC, per_cpu(saved_lvtpc, cpu));
apic_write(APIC_LVTERR, v);
- nmi_restore_registers(msrs);
+ nmi_cpu_restore_registers(msrs);
}
static void nmi_shutdown(void)
--
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