Commit 0517b0c7 authored Feb 29, 2024 by Jim Harris

trace: add SPDK_TRACE_SHM_NAME_BASE



This will be useful in an upcoming patch where we use this substring
to identify which /dev/shm files are SPDK trace files.

Signed-off-by: Jim Harris <jim.harris@samsung.com>
Change-Id: I5e6b1c3851cc58cdb03e635424b9360992ca3402
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/22103


Reviewed-by: Ben Walker <ben@nvidia.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Seung yeon Shin <syeon.shin@samsung.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>

parent 67eb86e3

include/spdk/trace.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@
		extern "C" {
		#endif

		#define SPDK_TRACE_SHM_NAME_BASE "_trace."
		#define SPDK_DEFAULT_NUM_TRACE_ENTRIES (32 * 1024)

		struct spdk_trace_entry {

lib/event/app.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -438,9 +438,11 @@ app_setup_trace(struct spdk_app_opts *opts)
		uint64_t group_id;

		if (opts->shm_id >= 0) {
		snprintf(shm_name, sizeof(shm_name), "/%s_trace.%d", opts->name, opts->shm_id);
		snprintf(shm_name, sizeof(shm_name), "/%s%s%d", opts->name,
		SPDK_TRACE_SHM_NAME_BASE, opts->shm_id);
		} else {
		snprintf(shm_name, sizeof(shm_name), "/%s_trace.pid%d", opts->name, (int)getpid());
		snprintf(shm_name, sizeof(shm_name), "/%s%spid%d", opts->name,
		SPDK_TRACE_SHM_NAME_BASE, (int)getpid());
		}

		if (spdk_trace_init(shm_name, opts->num_entries, 0) != 0) {