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| author | Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> | 2009-03-23 14:12:22 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-31 17:45:02 +0200 |
| commit | bdd6df6af98ce7e70702edfb5fd5dbbd8d1b0453 (patch) | |
| tree | d590d52a6837e0201abf8fd4461fa177d3658a5a /kernel/trace/trace_output.h | |
| parent | ftrace: Using FTRACE_WARN_ON() to check "freed record" in ftrace_release() (diff) | |
| download | linux-bdd6df6af98ce7e70702edfb5fd5dbbd8d1b0453.tar.xz linux-bdd6df6af98ce7e70702edfb5fd5dbbd8d1b0453.zip | |
tracing: provide trace_seq_reserve()
trace_seq_reserve() allows a caller to reserve space in a trace_seq and
write directly into it. This makes it easier to export binary data to
userspace via the tracing interface, by simply filling in a struct.
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/trace_output.h')
| -rw-r--r-- | kernel/trace/trace_output.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/trace/trace_output.h b/kernel/trace/trace_output.h index 35c422fb51a9..0ae20b83eec8 100644 --- a/kernel/trace/trace_output.h +++ b/kernel/trace/trace_output.h @@ -33,6 +33,7 @@ int trace_seq_puts(struct trace_seq *s, const char *str); int trace_seq_putc(struct trace_seq *s, unsigned char c); int trace_seq_putmem(struct trace_seq *s, void *mem, size_t len); int trace_seq_putmem_hex(struct trace_seq *s, void *mem, size_t len); +void *trace_seq_reserve(struct trace_seq *s, size_t len); int trace_seq_path(struct trace_seq *s, struct path *path); int seq_print_userip_objs(const struct userstack_entry *entry, struct trace_seq *s, unsigned long sym_flags); |