diff options
| author | Kevin Hilman <khilman@linaro.org> | 2015-08-14 09:45:22 -0700 |
|---|---|---|
| committer | Kevin Hilman <khilman@linaro.org> | 2015-08-14 09:55:00 -0700 |
| commit | 4dddf720534a9a14fa9b048e7930dcc55b1b1e40 (patch) | |
| tree | 6dead0bf02a9c08038d3238b1599823a25d9e881 /arch/powerpc/perf/core-book3s.c | |
| parent | a93bdb5f55d343fb51892050ed49da9d476da18a (diff) | |
| parent | 07818b5b1ba0f494a7255ab634bad2dd2b908ed0 (diff) | |
Merge branch 'linux-linaro-lsk-v3.10' into linux-linaro-lsk-v3.10-androidlsk-v3.10-15.08-android
Conflicts:
fs/exec.c
Resolution summary:
Conflict between upstream/LTS commit 9eae8ac6ab40 (fs: take
i_mutex during prepare_binprm for set[ug]id executables) and
android commit 9d0ff694bc22 (sched: move no_new_privs into new
atomic flags). Resolution: move task_no_new_privs() usage into
new function created by upstream/LTS comit.
Diffstat (limited to 'arch/powerpc/perf/core-book3s.c')
| -rw-r--r-- | arch/powerpc/perf/core-book3s.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index 846861a20b07..b63dc809596d 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -112,7 +112,16 @@ static inline void power_pmu_bhrb_read(struct cpu_hw_events *cpuhw) {} 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); } /* |