CPUFreq core has new infrastructure that would guarantee serialized calls to target() or target_index() callbacks. These are called cpufreq_freq_transition_begin() and cpufreq_freq_transition_end().
This patch converts existing drivers to use these new set of routines.
Reviewed-by: Srivatsa S. Bhat srivatsa.bhat@linux.vnet.ibm.com Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- drivers/cpufreq/cpufreq-nforce2.c | 4 ++-- drivers/cpufreq/cpufreq.c | 9 ++++----- drivers/cpufreq/exynos5440-cpufreq.c | 4 ++-- drivers/cpufreq/gx-suspmod.c | 4 ++-- drivers/cpufreq/integrator-cpufreq.c | 4 ++-- drivers/cpufreq/longhaul.c | 4 ++-- drivers/cpufreq/pcc-cpufreq.c | 4 ++-- drivers/cpufreq/powernow-k6.c | 4 ++-- drivers/cpufreq/powernow-k7.c | 4 ++-- drivers/cpufreq/powernow-k8.c | 4 ++-- drivers/cpufreq/s3c24xx-cpufreq.c | 4 ++-- drivers/cpufreq/sh-cpufreq.c | 4 ++-- drivers/cpufreq/unicore2-cpufreq.c | 4 ++-- 13 files changed, 28 insertions(+), 29 deletions(-)
diff --git a/drivers/cpufreq/cpufreq-nforce2.c b/drivers/cpufreq/cpufreq-nforce2.c index a05b876..bc447b9 100644 --- a/drivers/cpufreq/cpufreq-nforce2.c +++ b/drivers/cpufreq/cpufreq-nforce2.c @@ -270,7 +270,7 @@ static int nforce2_target(struct cpufreq_policy *policy, pr_debug("Old CPU frequency %d kHz, new %d kHz\n", freqs.old, freqs.new);
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); + cpufreq_freq_transition_begin(policy, &freqs);
/* Disable IRQs */ /* local_irq_save(flags); */ @@ -285,7 +285,7 @@ static int nforce2_target(struct cpufreq_policy *policy, /* Enable IRQs */ /* local_irq_restore(flags); */
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); + cpufreq_freq_transition_end(policy, &freqs, 0);
return 0; } diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index d57806a..eb562d0 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1507,8 +1507,8 @@ static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq, policy = per_cpu(cpufreq_cpu_data, cpu); read_unlock_irqrestore(&cpufreq_driver_lock, flags);
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); + cpufreq_freq_transition_begin(policy, &freqs); + cpufreq_freq_transition_end(policy, &freqs, 0); }
/** @@ -1868,8 +1868,7 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy, pr_debug("%s: cpu: %d, oldfreq: %u, new freq: %u\n", __func__, policy->cpu, freqs.old, freqs.new);
- cpufreq_notify_transition(policy, &freqs, - CPUFREQ_PRECHANGE); + cpufreq_freq_transition_begin(policy, &freqs); }
retval = cpufreq_driver->target_index(policy, index); @@ -1878,7 +1877,7 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy, __func__, retval);
if (notify) - cpufreq_notify_post_transition(policy, &freqs, retval); + cpufreq_freq_transition_end(policy, &freqs, retval); }
out: diff --git a/drivers/cpufreq/exynos5440-cpufreq.c b/drivers/cpufreq/exynos5440-cpufreq.c index 7f776aa..a6b8214 100644 --- a/drivers/cpufreq/exynos5440-cpufreq.c +++ b/drivers/cpufreq/exynos5440-cpufreq.c @@ -219,7 +219,7 @@ static int exynos_target(struct cpufreq_policy *policy, unsigned int index) freqs.old = policy->cur; freqs.new = freq_table[index].frequency;
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); + cpufreq_freq_transition_begin(policy, &freqs);
/* Set the target frequency in all C0_3_PSTATE register */ for_each_cpu(i, policy->cpus) { @@ -258,7 +258,7 @@ static void exynos_cpufreq_work(struct work_struct *work) dev_crit(dvfs_info->dev, "New frequency out of range\n"); freqs.new = freqs.old; } - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); + cpufreq_freq_transition_end(policy, &freqs, 0);
cpufreq_cpu_put(policy); mutex_unlock(&cpufreq_lock); diff --git a/drivers/cpufreq/gx-suspmod.c b/drivers/cpufreq/gx-suspmod.c index d83e826..1d723dc 100644 --- a/drivers/cpufreq/gx-suspmod.c +++ b/drivers/cpufreq/gx-suspmod.c @@ -265,7 +265,7 @@ static void gx_set_cpuspeed(struct cpufreq_policy *policy, unsigned int khz)
freqs.new = new_khz;
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); + cpufreq_freq_transition_begin(policy, &freqs); local_irq_save(flags);
if (new_khz != stock_freq) { @@ -314,7 +314,7 @@ static void gx_set_cpuspeed(struct cpufreq_policy *policy, unsigned int khz)
gx_params->pci_suscfg = suscfg;
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); + cpufreq_freq_transition_end(policy, &freqs, 0);
pr_debug("suspend modulation w/ duration of ON:%d us, OFF:%d us\n", gx_params->on_duration * 32, gx_params->off_duration * 32); diff --git a/drivers/cpufreq/integrator-cpufreq.c b/drivers/cpufreq/integrator-cpufreq.c index 0e27844..e5122f1 100644 --- a/drivers/cpufreq/integrator-cpufreq.c +++ b/drivers/cpufreq/integrator-cpufreq.c @@ -122,7 +122,7 @@ static int integrator_set_target(struct cpufreq_policy *policy, return 0; }
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); + cpufreq_freq_transition_begin(policy, &freqs);
cm_osc = __raw_readl(cm_base + INTEGRATOR_HDR_OSC_OFFSET);
@@ -143,7 +143,7 @@ static int integrator_set_target(struct cpufreq_policy *policy, */ set_cpus_allowed(current, cpus_allowed);
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); + cpufreq_freq_transition_end(policy, &freqs, 0);
return 0; } diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c index 7b94da3..5c440f8 100644 --- a/drivers/cpufreq/longhaul.c +++ b/drivers/cpufreq/longhaul.c @@ -269,7 +269,7 @@ static void longhaul_setstate(struct cpufreq_policy *policy, freqs.old = calc_speed(longhaul_get_cpu_mult()); freqs.new = speed;
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); + cpufreq_freq_transition_begin(policy, &freqs);
pr_debug("Setting to FSB:%dMHz Mult:%d.%dx (%s)\n", fsb, mult/10, mult%10, print_speed(speed/1000)); @@ -386,7 +386,7 @@ retry_loop: } } /* Report true CPU frequency */ - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); + cpufreq_freq_transition_end(policy, &freqs, 0);
if (!bm_timeout) printk(KERN_INFO PFX "Warning: Timeout while waiting for " diff --git a/drivers/cpufreq/pcc-cpufreq.c b/drivers/cpufreq/pcc-cpufreq.c index 1c0f106..728a2d8 100644 --- a/drivers/cpufreq/pcc-cpufreq.c +++ b/drivers/cpufreq/pcc-cpufreq.c @@ -215,7 +215,7 @@ static int pcc_cpufreq_target(struct cpufreq_policy *policy,
freqs.old = policy->cur; freqs.new = target_freq; - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); + cpufreq_freq_transition_begin(policy, &freqs);
input_buffer = 0x1 | (((target_freq * 100) / (ioread32(&pcch_hdr->nominal) * 1000)) << 8); @@ -231,7 +231,7 @@ static int pcc_cpufreq_target(struct cpufreq_policy *policy, status = ioread16(&pcch_hdr->status); iowrite16(0, &pcch_hdr->status);
- cpufreq_notify_post_transition(policy, &freqs, status != CMD_COMPLETE); + cpufreq_freq_transition_end(policy, &freqs, status != CMD_COMPLETE); spin_unlock(&pcc_lock);
if (status != CMD_COMPLETE) { diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c index ce27e6c..62c6f2e 100644 --- a/drivers/cpufreq/powernow-k6.c +++ b/drivers/cpufreq/powernow-k6.c @@ -148,11 +148,11 @@ static int powernow_k6_target(struct cpufreq_policy *policy, freqs.old = busfreq * powernow_k6_get_cpu_multiplier(); freqs.new = busfreq * clock_ratio[best_i].driver_data;
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); + cpufreq_freq_transition_begin(policy, &freqs);
powernow_k6_set_cpu_multiplier(best_i);
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); + cpufreq_freq_transition_end(policy, &freqs, 0);
return 0; } diff --git a/drivers/cpufreq/powernow-k7.c b/drivers/cpufreq/powernow-k7.c index 0e68e02..f911645 100644 --- a/drivers/cpufreq/powernow-k7.c +++ b/drivers/cpufreq/powernow-k7.c @@ -269,7 +269,7 @@ static int powernow_target(struct cpufreq_policy *policy, unsigned int index)
freqs.new = powernow_table[index].frequency;
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); + cpufreq_freq_transition_begin(policy, &freqs);
/* Now do the magic poking into the MSRs. */
@@ -290,7 +290,7 @@ static int powernow_target(struct cpufreq_policy *policy, unsigned int index) if (have_a0 == 1) local_irq_enable();
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); + cpufreq_freq_transition_end(policy, &freqs, 0);
return 0; } diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c index 27eb2be..770a9e1 100644 --- a/drivers/cpufreq/powernow-k8.c +++ b/drivers/cpufreq/powernow-k8.c @@ -963,9 +963,9 @@ static int transition_frequency_fidvid(struct powernow_k8_data *data, policy = cpufreq_cpu_get(smp_processor_id()); cpufreq_cpu_put(policy);
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); + cpufreq_freq_transition_begin(policy, &freqs); res = transition_fid_vid(data, fid, vid); - cpufreq_notify_post_transition(policy, &freqs, res); + cpufreq_freq_transition_end(policy, &freqs, res);
return res; } diff --git a/drivers/cpufreq/s3c24xx-cpufreq.c b/drivers/cpufreq/s3c24xx-cpufreq.c index 2506974..a3dc192 100644 --- a/drivers/cpufreq/s3c24xx-cpufreq.c +++ b/drivers/cpufreq/s3c24xx-cpufreq.c @@ -217,7 +217,7 @@ static int s3c_cpufreq_settarget(struct cpufreq_policy *policy, s3c_cpufreq_updateclk(clk_pclk, cpu_new.freq.pclk);
/* start the frequency change */ - cpufreq_notify_transition(policy, &freqs.freqs, CPUFREQ_PRECHANGE); + cpufreq_freq_transition_begin(policy, &freqs.freqs);
/* If hclk is staying the same, then we do not need to * re-write the IO or the refresh timings whilst we are changing @@ -261,7 +261,7 @@ static int s3c_cpufreq_settarget(struct cpufreq_policy *policy, local_irq_restore(flags);
/* notify everyone we've done this */ - cpufreq_notify_transition(policy, &freqs.freqs, CPUFREQ_POSTCHANGE); + cpufreq_freq_transition_end(policy, &freqs.freqs, 0);
s3c_freq_dbg("%s: finished\n", __func__); return 0; diff --git a/drivers/cpufreq/sh-cpufreq.c b/drivers/cpufreq/sh-cpufreq.c index 696170e..86628e2 100644 --- a/drivers/cpufreq/sh-cpufreq.c +++ b/drivers/cpufreq/sh-cpufreq.c @@ -68,10 +68,10 @@ static int sh_cpufreq_target(struct cpufreq_policy *policy, freqs.new = (freq + 500) / 1000; freqs.flags = 0;
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); + cpufreq_freq_transition_begin(policy, &freqs); set_cpus_allowed_ptr(current, &cpus_allowed); clk_set_rate(cpuclk, freq); - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); + cpufreq_freq_transition_end(policy, &freqs, 0);
dev_dbg(dev, "set frequency %lu Hz\n", freq);
diff --git a/drivers/cpufreq/unicore2-cpufreq.c b/drivers/cpufreq/unicore2-cpufreq.c index 36cc330..13be802 100644 --- a/drivers/cpufreq/unicore2-cpufreq.c +++ b/drivers/cpufreq/unicore2-cpufreq.c @@ -44,9 +44,9 @@ static int ucv2_target(struct cpufreq_policy *policy, freqs.old = policy->cur; freqs.new = target_freq;
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); + cpufreq_freq_transition_begin(policy, &freqs); ret = clk_set_rate(policy->mclk, target_freq * 1000); - cpufreq_notify_post_transition(policy, &freqs, ret); + cpufreq_freq_transition_end(policy, &freqs, ret);
return ret; }