linux-kernel - [tip:perfcounters/core] x86: perf

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Message-ID: <tip-184fe4ab1f2e4dfa45584889bb3820031648386b@git.kernel.org>
Date:	Sun, 8 Mar 2009 15:52:06 GMT
From:	Peter Zijlstra <peterz@...radead.org>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	a.p.zijlstra@...llo.nl, jaswinder@...nel.org, peterz@...radead.org,
	tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perfcounters/core] x86: perf_counter cleanup

Commit-ID:  184fe4ab1f2e4dfa45584889bb3820031648386b
Gitweb:     http://git.kernel.org/tip/184fe4ab1f2e4dfa45584889bb3820031648386b
Author:     "Peter Zijlstra" <peterz@...radead.org>
AuthorDate: Sun, 8 Mar 2009 11:34:19 +0100
Commit:     Ingo Molnar <mingo@...e.hu>
CommitDate: Sun, 8 Mar 2009 16:24:49 +0100

x86: perf_counter cleanup

Use and actual unsigned long bitmap instead of casting our way around.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Jaswinder Singh Rajput <jaswinder@...nel.org>
LKML-Reference: <1236508459.22914.3645.camel@...ns>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 arch/x86/kernel/cpu/perf_counter.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c
index f585371..1df4210 100644
--- a/arch/x86/kernel/cpu/perf_counter.c
+++ b/arch/x86/kernel/cpu/perf_counter.c
@@ -37,7 +37,7 @@ struct cpu_hw_counters {
 	unsigned long		used[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
 	unsigned long		interrupts;
 	u64			throttle_ctrl;
-	u64			active_mask;
+	unsigned long		active_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
 	int			enabled;
 };
 
@@ -291,7 +291,7 @@ static void pmc_amd_restore_all(u64 ctrl)
 		return;
 
 	for (idx = 0; idx < nr_counters_generic; idx++) {
-		if (test_bit(idx, (unsigned long *)&cpuc->active_mask)) {
+		if (test_bit(idx, cpuc->active_mask)) {
 			u64 val;
 
 			rdmsrl(MSR_K7_EVNTSEL0 + idx, val);
@@ -377,7 +377,7 @@ static void pmc_amd_enable(int idx, u64 config)
 {
 	struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters);
 
-	set_bit(idx, (unsigned long *)&cpuc->active_mask);
+	set_bit(idx, cpuc->active_mask);
 	if (cpuc->enabled)
 		config |= ARCH_PERFMON_EVENTSEL0_ENABLE;
 
@@ -401,7 +401,7 @@ static void pmc_amd_disable(int idx, u64 config)
 {
 	struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters);
 
-	clear_bit(idx, (unsigned long *)&cpuc->active_mask);
+	clear_bit(idx, cpuc->active_mask);
 	wrmsrl(MSR_K7_EVNTSEL0 + idx, config);
 
 }
--
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