luck/tmp_suning_uos_patched
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

x86: clean up arch/x86/kernel/tsc_sync.c a bit

Browse Source 
- remove unused define
 - make the lock variable definition stand out some more
 - convert KERN_* to pr_info() / pr_warning()

[ Impact: cleanup ]

LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2009-05-07 09:12:50 +02:00
parent 975e5f4550
commit 643bec9565
1 changed files with 6 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
arch/x86/kernel/tsc_sync.c
View File

@ -34,6 +34,7 @@ static __cpuinitdata atomic_t stop_count;
* of a critical section, to be able to prove TSC time-warps:
*/
static __cpuinitdata raw_spinlock_t sync_lock = __RAW_SPIN_LOCK_UNLOCKED;
static __cpuinitdata cycles_t last_tsc;
static __cpuinitdata cycles_t max_warp;
static __cpuinitdata int nr_warps;
@ -113,13 +114,12 @@ void __cpuinit check_tsc_sync_source(int cpu)
return;
if (boot_cpu_has(X86_FEATURE_TSC_RELIABLE)) {
printk(KERN_INFO
"Skipping synchronization checks as TSC is reliable.\n");
pr_info("Skipping synchronization checks as TSC is reliable.\n");
return;
}
printk(KERN_INFO "checking TSC synchronization [CPU#%d -> CPU#%d]:",
smp_processor_id(), cpu);
pr_info("checking TSC synchronization [CPU#%d -> CPU#%d]:",
smp_processor_id(), cpu);
/*
* Reset it - in case this is a second bootup:
@ -143,8 +143,8 @@ void __cpuinit check_tsc_sync_source(int cpu)
if (nr_warps) {
printk("\n");
printk(KERN_WARNING "Measured %Ld cycles TSC warp between CPUs,"
" turning off TSC clock.\n", max_warp);
pr_warning("Measured %Ld cycles TSC warp between CPUs, "
"turning off TSC clock.\n", max_warp);
mark_tsc_unstable("check_tsc_sync_source failed");
} else {
printk(" passed.\n");
@ -195,5 +195,3 @@ void __cpuinit check_tsc_sync_target(void)
while (atomic_read(&stop_count) != cpus)
cpu_relax();
}
#undef NR_LOOPS