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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 10:15:34 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 10:15:34 +0000 |
| commit | f68548b6d10e317aeedb009bab2cdc53aa196bd8 (patch) | |
| tree | 612907d41d90d34f497c4bfbbfd9fbd368d2a1d7 /kernel/trace/trace.c | |
| parent | Adding debian version 6.1.82-1. (diff) | |
| download | linux-f68548b6d10e317aeedb009bab2cdc53aa196bd8.tar.xz linux-f68548b6d10e317aeedb009bab2cdc53aa196bd8.zip | |
Merging upstream version 6.1.85.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'kernel/trace/trace.c')
| -rw-r--r-- | kernel/trace/trace.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index f667d6bdd..f2b00ea38 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -8278,6 +8278,20 @@ tracing_buffers_read(struct file *filp, char __user *ubuf, return size; } +static int tracing_buffers_flush(struct file *file, fl_owner_t id) +{ + struct ftrace_buffer_info *info = file->private_data; + struct trace_iterator *iter = &info->iter; + + iter->wait_index++; + /* Make sure the waiters see the new wait_index */ + smp_wmb(); + + ring_buffer_wake_waiters(iter->array_buffer->buffer, iter->cpu_file); + + return 0; +} + static int tracing_buffers_release(struct inode *inode, struct file *file) { struct ftrace_buffer_info *info = file->private_data; @@ -8289,12 +8303,6 @@ static int tracing_buffers_release(struct inode *inode, struct file *file) __trace_array_put(iter->tr); - iter->wait_index++; - /* Make sure the waiters see the new wait_index */ - smp_wmb(); - - ring_buffer_wake_waiters(iter->array_buffer->buffer, iter->cpu_file); - if (info->spare) ring_buffer_free_read_page(iter->array_buffer->buffer, info->spare_cpu, info->spare); @@ -8508,6 +8516,7 @@ static const struct file_operations tracing_buffers_fops = { .read = tracing_buffers_read, .poll = tracing_buffers_poll, .release = tracing_buffers_release, + .flush = tracing_buffers_flush, .splice_read = tracing_buffers_splice_read, .unlocked_ioctl = tracing_buffers_ioctl, .llseek = no_llseek, |