diff options
| author | Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> | 2011-06-08 11:00:08 +0900 |
|---|---|---|
| committer | Borislav Petkov <borislav.petkov@amd.com> | 2011-06-16 12:10:13 +0200 |
| commit | 559faa6be143b8aa7a07b12f618d29fbc1c8eb0d (patch) | |
| tree | 303453086742b43e1f665c1a88342216bc8878f7 | |
| parent | f6783c4234e65bd6f85596d97745ccdbf041cb63 (diff) | |
x86, mce: Cleanup mce_read()
Use a temporary local variable m to simplify the code. No change in
logic.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/4DEED7A8.8020307@jp.fujitsu.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index f3f648c8e087..54360e82854d 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -1537,19 +1537,18 @@ static ssize_t mce_read(struct file *filp, char __user *ubuf, size_t usize, do { for (i = prev; i < next; i++) { unsigned long start = jiffies; + struct mce *m = &mcelog.entry[i]; - while (!mcelog.entry[i].finished) { + while (!m->finished) { if (time_after_eq(jiffies, start + 2)) { - memset(mcelog.entry + i, 0, - sizeof(struct mce)); + memset(m, 0, sizeof(*m)); goto timeout; } cpu_relax(); } smp_rmb(); - err |= copy_to_user(buf, mcelog.entry + i, - sizeof(struct mce)); - buf += sizeof(struct mce); + err |= copy_to_user(buf, m, sizeof(*m)); + buf += sizeof(*m); timeout: ; } @@ -1569,13 +1568,13 @@ timeout: on_each_cpu(collect_tscs, cpu_tsc, 1); for (i = next; i < MCE_LOG_LEN; i++) { - if (mcelog.entry[i].finished && - mcelog.entry[i].tsc < cpu_tsc[mcelog.entry[i].cpu]) { - err |= copy_to_user(buf, mcelog.entry+i, - sizeof(struct mce)); + struct mce *m = &mcelog.entry[i]; + + if (m->finished && m->tsc < cpu_tsc[m->cpu]) { + err |= copy_to_user(buf, m, sizeof(*m)); smp_rmb(); - buf += sizeof(struct mce); - memset(&mcelog.entry[i], 0, sizeof(struct mce)); + buf += sizeof(*m); + memset(m, 0, sizeof(*m)); } } |