diff options
| author | Alexander Gordeev <agordeev@linux.ibm.com> | 2020-03-16 12:39:55 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-24 07:59:12 +0200 |
| commit | 39227f9d37892aa7cd2d68a8c5d740e4c42a786b (patch) | |
| tree | 4814df344f36e41fcb8a1a6becfe139176754849 | |
| parent | 6d3a2dca549bd0359acae3f6b9fd8199c4e092f5 (diff) | |
s390/cpuinfo: fix wrong output when CPU0 is offline
[ Upstream commit 872f27103874a73783aeff2aac2b41a489f67d7c ]
/proc/cpuinfo should not print information about CPU 0 when it is offline.
Fixes: 281eaa8cb67c ("s390/cpuinfo: simplify locking and skip offline cpus early")
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
[heiko.carstens@de.ibm.com: shortened commit message]
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/s390/kernel/processor.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c index d856263fd768..737e22cf0972 100644 --- a/arch/s390/kernel/processor.c +++ b/arch/s390/kernel/processor.c @@ -139,8 +139,9 @@ static void show_cpu_mhz(struct seq_file *m, unsigned long n) static int show_cpuinfo(struct seq_file *m, void *v) { unsigned long n = (unsigned long) v - 1; + unsigned long first = cpumask_first(cpu_online_mask); - if (!n) + if (n == first) show_cpu_summary(m, v); if (!machine_has_cpu_mhz) return 0; @@ -153,6 +154,8 @@ static inline void *c_update(loff_t *pos) { if (*pos) *pos = cpumask_next(*pos - 1, cpu_online_mask); + else + *pos = cpumask_first(cpu_online_mask); return *pos < nr_cpu_ids ? (void *)*pos + 1 : NULL; } |