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| author |   Peter Zijlstra <peterz@infradead.org> | 2020-10-30 12:14:21 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-11-09 18:12:34 +0100 |
| commit | 76a4efa80900fc40e0fdf243b42aec9fb8c35d24 (patch) | |
| tree | e71668f6517452f1f7c13aac88a9dabab3f47b94 /arch/s390/kernel/perf_regs.c | |
| parent | perf: Optimize get_recursion_context() (diff) | |
| download | linux-dev-76a4efa80900fc40e0fdf243b42aec9fb8c35d24.tar.xz linux-dev-76a4efa80900fc40e0fdf243b42aec9fb8c35d24.zip | |
perf/arch: Remove perf_sample_data::regs_user_copy
struct perf_sample_data lives on-stack, we should be careful about it's
size. Furthermore, the pt_regs copy in there is only because x86_64 is a
trainwreck, solve it differently.
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Steven Rostedt <rostedt@goodmis.org>
Link: https://lkml.kernel.org/r/20201030151955.258178461@infradead.org
Diffstat (limited to 'arch/s390/kernel/perf_regs.c')
| -rw-r--r-- | arch/s390/kernel/perf_regs.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/s390/kernel/perf_regs.c b/arch/s390/kernel/perf_regs.c index 4352a504f235..6e9e5d5e927e 100644 --- a/arch/s390/kernel/perf_regs.c +++ b/arch/s390/kernel/perf_regs.c @@ -53,8 +53,7 @@ u64 perf_reg_abi(struct task_struct *task) } void perf_get_regs_user(struct perf_regs *regs_user, - struct pt_regs *regs, - struct pt_regs *regs_user_copy) + struct pt_regs *regs) { /* * Use the regs from the first interruption and let |