diff options
Diffstat (limited to 'kernel/trace/trace.c')
| -rw-r--r-- | kernel/trace/trace.c | 25 |
1 files changed, 2 insertions, 23 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 760fd102dbe2..ec44b0e2a19c 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2665,7 +2665,7 @@ static void output_printk(struct trace_event_buffer *fbuffer) } int tracepoint_printk_sysctl(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, + void *buffer, size_t *lenp, loff_t *ppos) { int save_tracepoint_printk; @@ -6308,13 +6308,6 @@ static void tracing_spd_release_pipe(struct splice_pipe_desc *spd, __free_page(spd->pages[idx]); } -static const struct pipe_buf_operations tracing_pipe_buf_ops = { - .confirm = generic_pipe_buf_confirm, - .release = generic_pipe_buf_release, - .steal = generic_pipe_buf_steal, - .get = generic_pipe_buf_get, -}; - static size_t tracing_fill_pipe_page(size_t rem, struct trace_iterator *iter) { @@ -6376,7 +6369,7 @@ static ssize_t tracing_splice_read_pipe(struct file *filp, .partial = partial_def, .nr_pages = 0, /* This gets updated below. */ .nr_pages_max = PIPE_DEF_BUFFERS, - .ops = &tracing_pipe_buf_ops, + .ops = &default_pipe_buf_ops, .spd_release = tracing_spd_release_pipe, }; ssize_t ret; @@ -7585,9 +7578,7 @@ static bool buffer_pipe_buf_get(struct pipe_inode_info *pipe, /* Pipe buffer operations for a buffer. */ static const struct pipe_buf_operations buffer_pipe_buf_ops = { - .confirm = generic_pipe_buf_confirm, .release = buffer_pipe_buf_release, - .steal = generic_pipe_buf_nosteal, .get = buffer_pipe_buf_get, }; @@ -8530,18 +8521,6 @@ static int allocate_trace_buffers(struct trace_array *tr, int size) allocate_snapshot = false; #endif - /* - * Because of some magic with the way alloc_percpu() works on - * x86_64, we need to synchronize the pgd of all the tables, - * otherwise the trace events that happen in x86_64 page fault - * handlers can't cope with accessing the chance that a - * alloc_percpu()'d memory might be touched in the page fault trace - * event. Oh, and we need to audit all other alloc_percpu() and vmalloc() - * calls in tracing, because something might get triggered within a - * page fault trace event! - */ - vmalloc_sync_mappings(); - return 0; } |