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app: add -g flag hinting dpdk to create just one hugetlbfs file

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This makes use of the `--single-file-segments` DPDK param.

Change-Id: I21ddd955841748ea087c0d006875514be56f2107
Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
Reviewed-on: https://review.gerrithub.io/401112
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Dariusz Stojaczyk 2018-02-23 09:19:09 +01:00 committed by Jim Harris
parent 8d57caa11c
commit aa8e7002ba
4 changed files with 19 additions and 3 deletions
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1
include/spdk/env.h
View File

@ -61,6 +61,7 @@ struct spdk_env_opts {
int master_core;
int mem_size;
bool no_pci;
bool hugepage_single_segments;
/** Opaque context for use of the env implementation. */
void *env_context;

3
include/spdk/event.h
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@ -88,6 +88,7 @@ struct spdk_app_opts {
int master_core;
int mem_size;
bool no_pci;
bool hugepage_single_segments;
enum spdk_log_level print_level;
/* The maximum latency allowed when passing an event
@ -185,7 +186,7 @@ int spdk_app_parse_core_mask(const char *mask, struct spdk_cpuset *cpumask);
*/
struct spdk_cpuset *spdk_app_get_core_mask(void);
#define SPDK_APP_GETOPT_STRING "c:de:hi:m:n:p:qr:s:t:"
#define SPDK_APP_GETOPT_STRING "c:de:ghi:m:n:p:qr:s:t:"
enum spdk_app_parse_args_rvals {
SPDK_APP_PARSE_ARGS_HELP = 0,

13
lib/env_dpdk/init.c
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@ -242,6 +242,14 @@ spdk_build_eal_cmdline(const struct spdk_env_opts *opts)
}
}
/* create just one hugetlbfs file */
if (opts->hugepage_single_segments) {
args = spdk_push_arg(args, &argcount, _sprintf_alloc("--single-file-segments"));
if (args == NULL) {
return -1;
}
}
#ifdef __linux__
if (opts->shm_id < 0) {
args = spdk_push_arg(args, &argcount, _sprintf_alloc("--file-prefix=spdk_pid%d",
@ -322,12 +330,13 @@ int spdk_env_init(const struct spdk_env_opts *opts)
return -1;
}
if (opts->shm_id < 0) {
if (opts->shm_id < 0 && !opts->hugepage_single_segments) {
/*
* Unlink hugepage and config info files after init. This will ensure they get
* deleted on app exit, even if the app crashes and does not exit normally.
* Only do this when not in multi-process mode, since for multi-process other
* apps will need to open these files.
* apps will need to open these files. These files are not created for
* "single file segments".
*/
spdk_env_unlink_shared_files();
}

5
lib/event/app.c
View File

@ -359,6 +359,7 @@ spdk_app_start(struct spdk_app_opts *opts, spdk_event_fn start_fn,
env_opts.master_core = opts->master_core;
env_opts.mem_size = opts->mem_size;
env_opts.no_pci = opts->no_pci;
env_opts.hugepage_single_segments = opts->hugepage_single_segments;
if (spdk_env_init(&env_opts) < 0) {
SPDK_ERRLOG("Unable to initialize SPDK env\n");
@ -492,6 +493,7 @@ usage(char *executable_name, struct spdk_app_opts *default_opts, void (*app_usag
printf(" -c config config file (default %s)\n", default_opts->config_file);
printf(" -d disable coredump file enabling\n");
printf(" -e mask tracepoint group mask for spdk trace buffers (default 0x0)\n");
printf(" -g force creating just one hugetlbfs file\n");
printf(" -h show this usage\n");
printf(" -i shared memory ID (optional)\n");
printf(" -m mask core mask for DPDK\n");
@ -543,6 +545,9 @@ spdk_app_parse_args(int argc, char **argv, struct spdk_app_opts *opts,
case 'e':
opts->tpoint_group_mask = optarg;
break;
case 'g':
opts->hugepage_single_segments = true;
break;
case 'h':
usage(argv[0], &default_opts, app_usage);
rval = SPDK_APP_PARSE_ARGS_HELP;