From: dirk.brandewie@gmail.com
To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org
Cc: rjw@rjwysocki.net, dirk.brandewie@gmail.com,
Dirk Brandewie <dirk.j.brandewie@intel.com>
Subject: [PATCH 3/5] intel_pstate: Fix fixed point rounding macro
Date: Thu, 8 May 2014 12:57:25 -0700 [thread overview]
Message-ID: <1399579047-5792-4-git-send-email-dirk.j.brandewie@intel.com> (raw)
In-Reply-To: <1399579047-5792-1-git-send-email-dirk.j.brandewie@intel.com>
From: Dirk Brandewie <dirk.j.brandewie@intel.com>
Change the FP_ROUNDUP macro to add 0.5 in fixed point representation
instead of 1.0
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
---
drivers/cpufreq/intel_pstate.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index eab8ccf..bb20881 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -43,7 +43,7 @@
#define FRAC_BITS 6
#define int_tofp(X) ((int64_t)(X) << FRAC_BITS)
#define fp_toint(X) ((X) >> FRAC_BITS)
-#define FP_ROUNDUP(X) ((X) += 1 << FRAC_BITS)
+#define FP_ROUNDUP(X) ((X) += 1 << (FRAC_BITS-1))
static inline int32_t mul_fp(int32_t x, int32_t y)
{
--
1.9.0
next prev parent reply other threads:[~2014-05-08 19:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-08 19:57 [PATCH 0/5] updates for intel_pstate dirk.brandewie
2014-05-08 19:57 ` [PATCH 2/5] intel_pstate: remove setting P state to MAX on init dirk.brandewie
2014-05-08 19:57 ` dirk.brandewie [this message]
2014-05-12 12:17 ` [PATCH 3/5] intel_pstate: Fix fixed point rounding macro Rafael J. Wysocki
2014-05-08 19:57 ` [PATCH 4/5] intel_pstate: Remove C0 tracking dirk.brandewie
2014-05-09 1:44 ` Yuyang Du
2014-05-12 0:26 ` Rafael J. Wysocki
[not found] ` <CADmjqpOnzRrB8gJsmHWG=4bvhERLovnKyP0Pcki_uVJ3qpfD0g@mail.gmail.com>
2014-05-12 2:27 ` Stratos Karafotis
2014-05-12 12:16 ` Rafael J. Wysocki
2014-05-12 14:39 ` Dirk Brandewie
2014-05-12 23:45 ` Rafael J. Wysocki
2014-05-08 19:57 ` [PATCH 5/5] intel_pstate: Add CPU IDs for Broadwell processors dirk.brandewie
2014-05-08 20:30 ` [PATCH 0/5] updates for intel_pstate Rafael J. Wysocki
2014-05-08 21:08 ` Dirk Brandewie
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