diff options
author | Ingo Molnar <mingo@kernel.org> | 2015-08-25 09:59:19 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2015-08-25 09:59:19 +0200 |
commit | 8d58b66ed2b000f27658c88a4ed70e8042e86a58 (patch) | |
tree | 5bae2c74f932b5d863f72cb698a6f71260340b26 /arch/powerpc/perf | |
parent | 13fe86f465b72fc9328d4f5ebc33223c011852ae (diff) | |
parent | c13dcf9f2d6f5f06ef1bf79ec456df614c5e058b (diff) |
Merge tag 'v4.2-rc8' into x86/mm, before applying new changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/powerpc/perf')
-rw-r--r-- | arch/powerpc/perf/core-book3s.c | 11 | ||||
-rw-r--r-- | arch/powerpc/perf/hv-24x7.c | 2 |
2 files changed, 12 insertions, 1 deletions
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index 12b638425bb9..d90893b76e7c 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -131,7 +131,16 @@ static void pmao_restore_workaround(bool ebb) { } static bool regs_use_siar(struct pt_regs *regs) { - return !!regs->result; + /* + * When we take a performance monitor exception the regs are setup + * using perf_read_regs() which overloads some fields, in particular + * regs->result to tell us whether to use SIAR. + * + * However if the regs are from another exception, eg. a syscall, then + * they have not been setup using perf_read_regs() and so regs->result + * is something random. + */ + return ((TRAP(regs) == 0xf00) && regs->result); } /* diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c index ec2eb20631d1..df956295c2a7 100644 --- a/arch/powerpc/perf/hv-24x7.c +++ b/arch/powerpc/perf/hv-24x7.c @@ -320,6 +320,8 @@ static struct attribute *device_str_attr_create_(char *name, char *str) if (!attr) return NULL; + sysfs_attr_init(&attr->attr.attr); + attr->var = str; attr->attr.attr.name = name; attr->attr.attr.mode = 0444; |