lkml.org 
[lkml]   [2010]   [Jan]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 16/26] timer_stats: Convert to raw_spinlocks
    Date
    Convert locks which cannot sleep in preempt-rt to raw_spinlocks.

    See also 54852508231ef28058a88480b2f9ab9b859b0e38
    Completes the conversion started in ecb49d1a639acbacfc3771cae5ec07bed5df3847

    Signed-off-by: John Kacur <jkacur@redhat.com>
    ---
    kernel/time/timer_stats.c | 6 +++---
    1 files changed, 3 insertions(+), 3 deletions(-)

    diff --git a/kernel/time/timer_stats.c b/kernel/time/timer_stats.c
    index 2f3b585..30cb955 100644
    --- a/kernel/time/timer_stats.c
    +++ b/kernel/time/timer_stats.c
    @@ -81,7 +81,7 @@ struct entry {
    /*
    * Spinlock protecting the tables - not taken during lookup:
    */
    -static DEFINE_SPINLOCK(table_lock);
    +static DEFINE_RAW_SPINLOCK(table_lock);

    /*
    * Per-CPU lookup locks for fast hash lookup:
    @@ -188,7 +188,7 @@ static struct entry *tstat_lookup(struct entry *entry, char *comm)
    prev = NULL;
    curr = *head;

    - spin_lock(&table_lock);
    + raw_spin_lock(&table_lock);
    /*
    * Make sure we have not raced with another CPU:
    */
    @@ -215,7 +215,7 @@ static struct entry *tstat_lookup(struct entry *entry, char *comm)
    *head = curr;
    }
    out_unlock:
    - spin_unlock(&table_lock);
    + raw_spin_unlock(&table_lock);

    return curr;
    }
    --
    1.6.5.2


    \
     
     \ /
      Last update: 2010-01-11 22:33    [W:0.022 / U:89.952 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site