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| author | Michael Wang <wangyun@linux.vnet.ibm.com> | 2012-09-19 13:42:23 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-09-26 13:27:56 +0200 |
| commit | dec08a837fda146fee498ffc5ecd0d2eeeacd025 (patch) | |
| tree | 2f97fc053268c1e08f6b43a77070873a0bc74ffb | |
| parent | 6f0f9b6b3fcfe5e156f20d4f804f0d505c750b3c (diff) | |
| download | linux-dec08a837fda146fee498ffc5ecd0d2eeeacd025.tar.bz2 | |
x86: Remove the useless branch in c_start()
Since 'cpu == -1' in cpumask_next() is legal, no need to handle
'*pos == 0' specially.
About the comments:
/* just in case, cpu 0 is not the first */
A test with a cpumask in which cpu 0 is not the first has been
done, and it works well.
This patch will remove that useless branch to clean the code.
Signed-off-by: Michael Wang <wangyun@linux.vnet.ibm.com>
Cc: kjwinchester@gmail.com
Cc: borislav.petkov@amd.com
Cc: ak@linux.intel.com
Link: http://lkml.kernel.org/r/1348033343-23658-1-git-send-email-wangyun@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | arch/x86/kernel/cpu/proc.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c index 8022c6681485..fbd895562292 100644 --- a/arch/x86/kernel/cpu/proc.c +++ b/arch/x86/kernel/cpu/proc.c @@ -140,10 +140,7 @@ static int show_cpuinfo(struct seq_file *m, void *v) static void *c_start(struct seq_file *m, loff_t *pos) { - if (*pos == 0) /* just in case, cpu 0 is not the first */ - *pos = cpumask_first(cpu_online_mask); - else - *pos = cpumask_next(*pos - 1, cpu_online_mask); + *pos = cpumask_next(*pos - 1, cpu_online_mask); if ((*pos) < nr_cpu_ids) return &cpu_data(*pos); return NULL; |