diff options
| author | Viresh Kumar <viresh.kumar@linaro.org> | 2013-03-24 07:26:43 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-04-02 15:24:00 +0200 |
| commit | b43a7ffbf33be7e4d3b10b7714ee663ea2c52fe2 (patch) | |
| tree | 7d3ac2733d76a785be12bfba75bfe244a5a31460 /drivers/cpufreq/powernow-k7.c | |
| parent | cpufreq: cpufreq-cpu0: Call CPUFREQ_POSTCHANGE notifier for failure cases too (diff) | |
| download | linux-b43a7ffbf33be7e4d3b10b7714ee663ea2c52fe2.tar.xz linux-b43a7ffbf33be7e4d3b10b7714ee663ea2c52fe2.zip | |
cpufreq: Notify all policy->cpus in cpufreq_notify_transition()
policy->cpus contains all online cpus that have single shared clock line. And
their frequencies are always updated together.
Many SMP system's cpufreq drivers take care of this in individual drivers but
the best place for this code is in cpufreq core.
This patch modifies cpufreq_notify_transition() to notify frequency change for
all cpus in policy->cpus and hence updates all users of this API.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/powernow-k7.c')
| -rw-r--r-- | drivers/cpufreq/powernow-k7.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/cpufreq/powernow-k7.c b/drivers/cpufreq/powernow-k7.c index 334cc2f1e9f1..53888dacbe58 100644 --- a/drivers/cpufreq/powernow-k7.c +++ b/drivers/cpufreq/powernow-k7.c @@ -248,7 +248,7 @@ static void change_VID(int vid) } -static void change_speed(unsigned int index) +static void change_speed(struct cpufreq_policy *policy, unsigned int index) { u8 fid, vid; struct cpufreq_freqs freqs; @@ -263,15 +263,13 @@ static void change_speed(unsigned int index) fid = powernow_table[index].index & 0xFF; vid = (powernow_table[index].index & 0xFF00) >> 8; - freqs.cpu = 0; - rdmsrl(MSR_K7_FID_VID_STATUS, fidvidstatus.val); cfid = fidvidstatus.bits.CFID; freqs.old = fsb * fid_codes[cfid] / 10; freqs.new = powernow_table[index].frequency; - cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); + cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); /* Now do the magic poking into the MSRs. */ @@ -292,7 +290,7 @@ static void change_speed(unsigned int index) if (have_a0 == 1) local_irq_enable(); - cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); + cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); } @@ -546,7 +544,7 @@ static int powernow_target(struct cpufreq_policy *policy, relation, &newstate)) return -EINVAL; - change_speed(newstate); + change_speed(policy, newstate); return 0; } |