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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2006-06-23 02:03:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-23 07:42:45 -0700 |
| commit | 6f0419e06a3b151ab616a31accdabef41dc2d1b0 (patch) | |
| tree | a297e66f7fe2ba2bc68b560eb7fa55fd5047e10b | |
| parent | d6938d1b2768fbf94d1091207d334ef7df786e5a (diff) | |
| download | op-kernel-dev-6f0419e06a3b151ab616a31accdabef41dc2d1b0.zip op-kernel-dev-6f0419e06a3b151ab616a31accdabef41dc2d1b0.tar.gz | |
[PATCH] for_each_possible_cpu: xfs
for_each_cpu() actually iterates across all possible CPUs. We've had mistakes
in the past where people were using for_each_cpu() where they should have been
iterating across only online or present CPUs. This is inefficient and
possibly buggy.
We're renaming for_each_cpu() to for_each_possible_cpu() to avoid this in the
future.
This patch replaces for_each_cpu with for_each_possible_cpu.
in xfs.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_stats.c | 4 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_sysctl.c | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/fs/xfs/linux-2.6/xfs_stats.c b/fs/xfs/linux-2.6/xfs_stats.c index 1f0589a..e480b61 100644 --- a/fs/xfs/linux-2.6/xfs_stats.c +++ b/fs/xfs/linux-2.6/xfs_stats.c @@ -62,7 +62,7 @@ xfs_read_xfsstats( while (j < xstats[i].endpoint) { val = 0; /* sum over all cpus */ - for_each_cpu(c) + for_each_possible_cpu(c) val += *(((__u32*)&per_cpu(xfsstats, c) + j)); len += sprintf(buffer + len, " %u", val); j++; @@ -70,7 +70,7 @@ xfs_read_xfsstats( buffer[len++] = '\n'; } /* extra precision counters */ - for_each_cpu(i) { + for_each_possible_cpu(i) { xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes; xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes; xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes; diff --git a/fs/xfs/linux-2.6/xfs_sysctl.c b/fs/xfs/linux-2.6/xfs_sysctl.c index 4af9768..af24653 100644 --- a/fs/xfs/linux-2.6/xfs_sysctl.c +++ b/fs/xfs/linux-2.6/xfs_sysctl.c @@ -38,7 +38,7 @@ xfs_stats_clear_proc_handler( if (!ret && write && *valp) { printk("XFS Clearing xfsstats\n"); - for_each_cpu(c) { + for_each_possible_cpu(c) { preempt_disable(); /* save vn_active, it's a universal truth! */ vn_active = per_cpu(xfsstats, c).vn_active; |
