* [dpdk-dev] [PATCH] mem: Command line option to delete hugepage backing files
[not found] <1444817040-7974-1-git-send-email-shesha@cisco.com>
@ 2015-10-14 17:05 ` shesha Sreenivasamurthy (shesha)
2015-10-14 18:59 ` shesha Sreenivasamurthy (shesha)
1 sibling, 0 replies; 6+ messages in thread
From: shesha Sreenivasamurthy (shesha) @ 2015-10-14 17:05 UTC (permalink / raw)
To: dev
---
lib/librte_eal/common/eal_common_options.c | 12 ++++++++++
lib/librte_eal/common/eal_internal_cfg.h | 1 +
lib/librte_eal/common/eal_options.h | 2 ++
lib/librte_eal/linuxapp/eal/eal_memory.c | 37 ++++++++++++++++++++++++++++++
4 files changed, 52 insertions(+)
diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
index 1f459ac..5fe6374 100644
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -79,6 +79,7 @@ eal_long_options[] = {
{OPT_MASTER_LCORE, 1, NULL, OPT_MASTER_LCORE_NUM },
{OPT_NO_HPET, 0, NULL, OPT_NO_HPET_NUM },
{OPT_NO_HUGE, 0, NULL, OPT_NO_HUGE_NUM },
+ {OPT_HUGE_UNLINK, 0, NULL, OPT_HUGE_UNLINK_NUM },
{OPT_NO_PCI, 0, NULL, OPT_NO_PCI_NUM },
{OPT_NO_SHCONF, 0, NULL, OPT_NO_SHCONF_NUM },
{OPT_PCI_BLACKLIST, 1, NULL, OPT_PCI_BLACKLIST_NUM },
@@ -722,6 +723,10 @@ eal_parse_common_option(int opt, const char *optarg,
conf->no_hugetlbfs = 1;
break;
+ case OPT_HUGE_UNLINK_NUM:
+ conf->hugepage_unlink = 1;
+ break;
+
case OPT_NO_PCI_NUM:
conf->no_pci = 1;
break;
@@ -856,6 +861,12 @@ eal_check_common_options(struct internal_config *internal_cfg)
return -1;
}
+ if (internal_cfg->no_hugetlbfs && internal_cfg->hugepage_unlink) {
+ RTE_LOG(ERR, EAL, "Option --"OPT_HUGE_UNLINK" cannot "
+ "be specified together with --"OPT_NO_HUGE"\n");
+ return -1;
+ }
+
if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) != 0 &&
rte_eal_devargs_type_count(RTE_DEVTYPE_BLACKLISTED_PCI) != 0) {
RTE_LOG(ERR, EAL, "Options blacklist (-b) and whitelist (-w) "
@@ -906,6 +917,7 @@ eal_common_usage(void)
" -h, --help This help\n"
"\nEAL options for DEBUG use only:\n"
" --"OPT_NO_HUGE" Use malloc instead of hugetlbfs\n"
+ " --"OPT_HUGE_UNLINK" Unlink hugepage backing file after initalization\n"
" --"OPT_NO_PCI" Disable PCI\n"
" --"OPT_NO_HPET" Disable HPET\n"
" --"OPT_NO_SHCONF" No shared config (mmap'd files)\n"
diff --git a/lib/librte_eal/common/eal_internal_cfg.h b/lib/librte_eal/common/eal_internal_cfg.h
index e2ecb0d..84b075f 100644
--- a/lib/librte_eal/common/eal_internal_cfg.h
+++ b/lib/librte_eal/common/eal_internal_cfg.h
@@ -64,6 +64,7 @@ struct internal_config {
volatile unsigned force_nchannel; /**< force number of channels */
volatile unsigned force_nrank; /**< force number of ranks */
volatile unsigned no_hugetlbfs; /**< true to disable hugetlbfs */
+ volatile unsigned hugepage_unlink; /** < true to unlink backing files */
volatile unsigned xen_dom0_support; /**< support app running on Xen Dom0*/
volatile unsigned no_pci; /**< true to disable PCI */
volatile unsigned no_hpet; /**< true to disable HPET */
diff --git a/lib/librte_eal/common/eal_options.h b/lib/librte_eal/common/eal_options.h
index f6714d9..745f38c 100644
--- a/lib/librte_eal/common/eal_options.h
+++ b/lib/librte_eal/common/eal_options.h
@@ -63,6 +63,8 @@ enum {
OPT_PROC_TYPE_NUM,
#define OPT_NO_HPET "no-hpet"
OPT_NO_HPET_NUM,
+#define OPT_HUGE_UNLINK "huge-unlink"
+ OPT_HUGE_UNLINK_NUM,
#define OPT_NO_HUGE "no-huge"
OPT_NO_HUGE_NUM,
#define OPT_NO_PCI "no-pci"
diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index ac2745e..016cac6 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -786,6 +786,37 @@ copy_hugepages_to_shared_mem(struct hugepage_file * dst, int dest_size,
return 0;
}
+static int
+unlink_hugepage_bkup_files(struct hugepage_file *hugepg_tbl,
+ struct hugepage_info *hpi,
+ unsigned num_hp_info)
+{
+ unsigned socket, size;
+ int page, nrpages = 0;
+
+ /* get total number of hugepages */
+ for (size = 0; size < num_hp_info; size++)
+ for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++)
+ nrpages += internal_config.hugepage_info[size].num_pages[socket];
+
+ for (size = 0; size < num_hp_info; size++) {
+ for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
+ for (page = 0; page < nrpages; page++) {
+ struct hugepage_file *hp = &hugepg_tbl[page];
+ if ((hp->size == hpi[size].hugepage_sz) &&
+ (hp->socket_id == (int) socket) &&
+ hp->final_va != NULL) {
+ if (unlink(hp->filepath)) {
+ RTE_LOG(WARNING, EAL, "%s(): Removing %s failed: %s\n",
+ __func__, hp->filepath, strerror(errno));
+ }
+ }
+ } /* foreach page */
+ } /* foreach socket */
+ } /* foreach pagesize */
+ return 0;
+}
+
/*
* unmaps hugepages that are not going to be used. since we originally allocate
* ALL hugepages (not just those we need), additional unmapping needs to be done.
@@ -1290,6 +1321,12 @@ rte_eal_hugepage_init(void)
}
/* free the temporary hugepage table */
+ if (internal_config.hugepage_unlink &&
+ unlink_hugepage_bkup_files(tmp_hp, used_hp,
+ internal_config.num_hugepage_sizes) < 0) {
+ RTE_LOG(ERR, EAL, "Unlinking hugepage backing files failed!\n");
+ goto fail;
+ }
free(tmp_hp);
tmp_hp = NULL;
--
1.9.1
^ permalink raw reply [flat|nested] 6+ messages in thread
* [dpdk-dev] [PATCH] mem: Command line option to delete hugepage backing files
[not found] <1444817040-7974-1-git-send-email-shesha@cisco.com>
2015-10-14 17:05 ` [dpdk-dev] [PATCH] mem: Command line option to delete hugepage backing files shesha Sreenivasamurthy (shesha)
@ 2015-10-14 18:59 ` shesha Sreenivasamurthy (shesha)
2015-10-20 15:23 ` Gonzalez Monroy, Sergio
[not found] ` <1445335331-9050-1-git-send-email-shesha@cisco.com>
1 sibling, 2 replies; 6+ messages in thread
From: shesha Sreenivasamurthy (shesha) @ 2015-10-14 18:59 UTC (permalink / raw)
To: dev
When an application using huge-pages crash or exists, the hugetlbfs backing files are not cleaned up. This is a patch to clean those files. There are multi-process DPDK applications that may be benefited by those backing files. Therefore, I have made that configurable so that the application that does not need those backing files can remove them, thus not changing the current default behavior. The application itself can clean it up, however the rationale behind DPDK cleaning it up is, DPDK created it therefore, it is better it unlinks it.
---
lib/librte_eal/common/eal_common_options.c | 12 ++++++++++
lib/librte_eal/common/eal_internal_cfg.h | 1 +
lib/librte_eal/common/eal_options.h | 2 ++
lib/librte_eal/linuxapp/eal/eal_memory.c | 37 ++++++++++++++++++++++++++++++
4 files changed, 52 insertions(+)
diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
index 1f459ac..5fe6374 100644
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -79,6 +79,7 @@ eal_long_options[] = {
{OPT_MASTER_LCORE, 1, NULL, OPT_MASTER_LCORE_NUM },
{OPT_NO_HPET, 0, NULL, OPT_NO_HPET_NUM },
{OPT_NO_HUGE, 0, NULL, OPT_NO_HUGE_NUM },
+ {OPT_HUGE_UNLINK, 0, NULL, OPT_HUGE_UNLINK_NUM },
{OPT_NO_PCI, 0, NULL, OPT_NO_PCI_NUM },
{OPT_NO_SHCONF, 0, NULL, OPT_NO_SHCONF_NUM },
{OPT_PCI_BLACKLIST, 1, NULL, OPT_PCI_BLACKLIST_NUM },
@@ -722,6 +723,10 @@ eal_parse_common_option(int opt, const char *optarg,
conf->no_hugetlbfs = 1;
break;
+ case OPT_HUGE_UNLINK_NUM:
+ conf->hugepage_unlink = 1;
+ break;
+
case OPT_NO_PCI_NUM:
conf->no_pci = 1;
break;
@@ -856,6 +861,12 @@ eal_check_common_options(struct internal_config *internal_cfg)
return -1;
}
+ if (internal_cfg->no_hugetlbfs && internal_cfg->hugepage_unlink) {
+ RTE_LOG(ERR, EAL, "Option --"OPT_HUGE_UNLINK" cannot "
+ "be specified together with --"OPT_NO_HUGE"\n");
+ return -1;
+ }
+
if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) != 0 &&
rte_eal_devargs_type_count(RTE_DEVTYPE_BLACKLISTED_PCI) != 0) {
RTE_LOG(ERR, EAL, "Options blacklist (-b) and whitelist (-w) "
@@ -906,6 +917,7 @@ eal_common_usage(void)
" -h, --help This help\n"
"\nEAL options for DEBUG use only:\n"
" --"OPT_NO_HUGE" Use malloc instead of hugetlbfs\n"
+ " --"OPT_HUGE_UNLINK" Unlink hugepage backing file after initalization\n"
" --"OPT_NO_PCI" Disable PCI\n"
" --"OPT_NO_HPET" Disable HPET\n"
" --"OPT_NO_SHCONF" No shared config (mmap'd files)\n"
diff --git a/lib/librte_eal/common/eal_internal_cfg.h b/lib/librte_eal/common/eal_internal_cfg.h
index e2ecb0d..84b075f 100644
--- a/lib/librte_eal/common/eal_internal_cfg.h
+++ b/lib/librte_eal/common/eal_internal_cfg.h
@@ -64,6 +64,7 @@ struct internal_config {
volatile unsigned force_nchannel; /**< force number of channels */
volatile unsigned force_nrank; /**< force number of ranks */
volatile unsigned no_hugetlbfs; /**< true to disable hugetlbfs */
+ volatile unsigned hugepage_unlink; /** < true to unlink backing files */
volatile unsigned xen_dom0_support; /**< support app running on Xen Dom0*/
volatile unsigned no_pci; /**< true to disable PCI */
volatile unsigned no_hpet; /**< true to disable HPET */
diff --git a/lib/librte_eal/common/eal_options.h b/lib/librte_eal/common/eal_options.h
index f6714d9..745f38c 100644
--- a/lib/librte_eal/common/eal_options.h
+++ b/lib/librte_eal/common/eal_options.h
@@ -63,6 +63,8 @@ enum {
OPT_PROC_TYPE_NUM,
#define OPT_NO_HPET "no-hpet"
OPT_NO_HPET_NUM,
+#define OPT_HUGE_UNLINK "huge-unlink"
+ OPT_HUGE_UNLINK_NUM,
#define OPT_NO_HUGE "no-huge"
OPT_NO_HUGE_NUM,
#define OPT_NO_PCI "no-pci"
diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index ac2745e..016cac6 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -786,6 +786,37 @@ copy_hugepages_to_shared_mem(struct hugepage_file * dst, int dest_size,
return 0;
}
+static int
+unlink_hugepage_bkup_files(struct hugepage_file *hugepg_tbl,
+ struct hugepage_info *hpi,
+ unsigned num_hp_info)
+{
+ unsigned socket, size;
+ int page, nrpages = 0;
+
+ /* get total number of hugepages */
+ for (size = 0; size < num_hp_info; size++)
+ for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++)
+ nrpages += internal_config.hugepage_info[size].num_pages[socket];
+
+ for (size = 0; size < num_hp_info; size++) {
+ for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
+ for (page = 0; page < nrpages; page++) {
+ struct hugepage_file *hp = &hugepg_tbl[page];
+ if ((hp->size == hpi[size].hugepage_sz) &&
+ (hp->socket_id == (int) socket) &&
+ hp->final_va != NULL) {
+ if (unlink(hp->filepath)) {
+ RTE_LOG(WARNING, EAL, "%s(): Removing %s failed: %s\n",
+ __func__, hp->filepath, strerror(errno));
+ }
+ }
+ } /* foreach page */
+ } /* foreach socket */
+ } /* foreach pagesize */
+ return 0;
+}
+
/*
* unmaps hugepages that are not going to be used. since we originally allocate
* ALL hugepages (not just those we need), additional unmapping needs to be done.
@@ -1290,6 +1321,12 @@ rte_eal_hugepage_init(void)
}
/* free the temporary hugepage table */
+ if (internal_config.hugepage_unlink &&
+ unlink_hugepage_bkup_files(tmp_hp, used_hp,
+ internal_config.num_hugepage_sizes) < 0) {
+ RTE_LOG(ERR, EAL, "Unlinking hugepage backing files failed!\n");
+ goto fail;
+ }
free(tmp_hp);
tmp_hp = NULL;
--
1.9.1
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] [PATCH] mem: Command line option to delete hugepage backing files
2015-10-14 18:59 ` shesha Sreenivasamurthy (shesha)
@ 2015-10-20 15:23 ` Gonzalez Monroy, Sergio
[not found] ` <1445335331-9050-1-git-send-email-shesha@cisco.com>
1 sibling, 0 replies; 6+ messages in thread
From: Gonzalez Monroy, Sergio @ 2015-10-20 15:23 UTC (permalink / raw)
To: shesha Sreenivasamurthy (shesha); +Cc: dev
Hi Shesha,
A few format comments:
- Spacing/tabbing is all wrong for some reason, need to be fixed.
- Signed-off is missing, see 'Contribute by sending patches' in
http://dpdk.org/dev.
- No capital letters in the commit title - there is a patch submitted
with more detailed info regarding patch format, etc -
http://dpdk.org/dev/patchwork/patch/7762/
On 14/10/2015 19:59, shesha Sreenivasamurthy (shesha) wrote:
> When an application using huge-pages crash or exists, the hugetlbfs backing files are not cleaned up. This is a patch to clean those files. There are multi-process DPDK applications that may be benefited by those backing files. Therefore, I have made that configurable so that the application that does not need those backing files can remove them, thus not changing the current default behavior. The application itself can clean it up, however the rationale behind DPDK cleaning it up is, DPDK created it therefore, it is better it unlinks it.
>
> ---
> lib/librte_eal/common/eal_common_options.c | 12 ++++++++++
> lib/librte_eal/common/eal_internal_cfg.h | 1 +
> lib/librte_eal/common/eal_options.h | 2 ++
> lib/librte_eal/linuxapp/eal/eal_memory.c | 37 ++++++++++++++++++++++++++++++
> 4 files changed, 52 insertions(+)
>
> diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
> index 1f459ac..5fe6374 100644
> --- a/lib/librte_eal/common/eal_common_options.c
> +++ b/lib/librte_eal/common/eal_common_options.c
> @@ -79,6 +79,7 @@ eal_long_options[] = {
> {OPT_MASTER_LCORE, 1, NULL, OPT_MASTER_LCORE_NUM },
> {OPT_NO_HPET, 0, NULL, OPT_NO_HPET_NUM },
> {OPT_NO_HUGE, 0, NULL, OPT_NO_HUGE_NUM },
> + {OPT_HUGE_UNLINK, 0, NULL, OPT_HUGE_UNLINK_NUM },
> {OPT_NO_PCI, 0, NULL, OPT_NO_PCI_NUM },
> {OPT_NO_SHCONF, 0, NULL, OPT_NO_SHCONF_NUM },
> {OPT_PCI_BLACKLIST, 1, NULL, OPT_PCI_BLACKLIST_NUM },
> @@ -722,6 +723,10 @@ eal_parse_common_option(int opt, const char *optarg,
> conf->no_hugetlbfs = 1;
> break;
> + case OPT_HUGE_UNLINK_NUM:
> + conf->hugepage_unlink = 1;
> + break;
> +
> case OPT_NO_PCI_NUM:
> conf->no_pci = 1;
> break;
> @@ -856,6 +861,12 @@ eal_check_common_options(struct internal_config *internal_cfg)
> return -1;
> }
> + if (internal_cfg->no_hugetlbfs && internal_cfg->hugepage_unlink) {
> + RTE_LOG(ERR, EAL, "Option --"OPT_HUGE_UNLINK" cannot "
> + "be specified together with --"OPT_NO_HUGE"\n");
> + return -1;
> + }
> +
> if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) != 0 &&
> rte_eal_devargs_type_count(RTE_DEVTYPE_BLACKLISTED_PCI) != 0) {
> RTE_LOG(ERR, EAL, "Options blacklist (-b) and whitelist (-w) "
> @@ -906,6 +917,7 @@ eal_common_usage(void)
> " -h, --help This help\n"
> "\nEAL options for DEBUG use only:\n"
> " --"OPT_NO_HUGE" Use malloc instead of hugetlbfs\n"
> + " --"OPT_HUGE_UNLINK" Unlink hugepage backing file after initalization\n"
> " --"OPT_NO_PCI" Disable PCI\n"
> " --"OPT_NO_HPET" Disable HPET\n"
> " --"OPT_NO_SHCONF" No shared config (mmap'd files)\n"
> diff --git a/lib/librte_eal/common/eal_internal_cfg.h b/lib/librte_eal/common/eal_internal_cfg.h
> index e2ecb0d..84b075f 100644
> --- a/lib/librte_eal/common/eal_internal_cfg.h
> +++ b/lib/librte_eal/common/eal_internal_cfg.h
> @@ -64,6 +64,7 @@ struct internal_config {
> volatile unsigned force_nchannel; /**< force number of channels */
> volatile unsigned force_nrank; /**< force number of ranks */
> volatile unsigned no_hugetlbfs; /**< true to disable hugetlbfs */
> + volatile unsigned hugepage_unlink; /** < true to unlink backing files */
> volatile unsigned xen_dom0_support; /**< support app running on Xen Dom0*/
> volatile unsigned no_pci; /**< true to disable PCI */
> volatile unsigned no_hpet; /**< true to disable HPET */
> diff --git a/lib/librte_eal/common/eal_options.h b/lib/librte_eal/common/eal_options.h
> index f6714d9..745f38c 100644
> --- a/lib/librte_eal/common/eal_options.h
> +++ b/lib/librte_eal/common/eal_options.h
> @@ -63,6 +63,8 @@ enum {
> OPT_PROC_TYPE_NUM,
> #define OPT_NO_HPET "no-hpet"
> OPT_NO_HPET_NUM,
> +#define OPT_HUGE_UNLINK "huge-unlink"
> + OPT_HUGE_UNLINK_NUM,
> #define OPT_NO_HUGE "no-huge"
> OPT_NO_HUGE_NUM,
> #define OPT_NO_PCI "no-pci"
> diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
> index ac2745e..016cac6 100644
> --- a/lib/librte_eal/linuxapp/eal/eal_memory.c
> +++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
> @@ -786,6 +786,37 @@ copy_hugepages_to_shared_mem(struct hugepage_file * dst, int dest_size,
> return 0;
> }
> +static int
> +unlink_hugepage_bkup_files(struct hugepage_file *hugepg_tbl,
Just a nit, maybe just call this function unlink_hugepage_files
Sergio
> + struct hugepage_info *hpi,
> + unsigned num_hp_info)
> +{
> + unsigned socket, size;
> + int page, nrpages = 0;
> +
> + /* get total number of hugepages */
> + for (size = 0; size < num_hp_info; size++)
> + for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++)
> + nrpages += internal_config.hugepage_info[size].num_pages[socket];
> +
> + for (size = 0; size < num_hp_info; size++) {
> + for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
> + for (page = 0; page < nrpages; page++) {
> + struct hugepage_file *hp = &hugepg_tbl[page];
> + if ((hp->size == hpi[size].hugepage_sz) &&
> + (hp->socket_id == (int) socket) &&
> + hp->final_va != NULL) {
> + if (unlink(hp->filepath)) {
> + RTE_LOG(WARNING, EAL, "%s(): Removing %s failed: %s\n",
> + __func__, hp->filepath, strerror(errno));
> + }
> + }
> + } /* foreach page */
> + } /* foreach socket */
> + } /* foreach pagesize */
> + return 0;
> +}
> +
> /*
> * unmaps hugepages that are not going to be used. since we originally allocate
> * ALL hugepages (not just those we need), additional unmapping needs to be done.
> @@ -1290,6 +1321,12 @@ rte_eal_hugepage_init(void)
> }
> /* free the temporary hugepage table */
> + if (internal_config.hugepage_unlink &&
> + unlink_hugepage_bkup_files(tmp_hp, used_hp,
> + internal_config.num_hugepage_sizes) < 0) {
> + RTE_LOG(ERR, EAL, "Unlinking hugepage backing files failed!\n");
> + goto fail;
> + }
> free(tmp_hp);
> tmp_hp = NULL;
> --
> 1.9.1
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* [dpdk-dev] [PATCH v2] mem: command line option to delete hugepage backing files
[not found] ` <1445335331-9050-1-git-send-email-shesha@cisco.com>
@ 2015-10-20 17:04 ` shesha Sreenivasamurthy (shesha)
2015-10-20 17:29 ` shesha Sreenivasamurthy (shesha)
1 sibling, 0 replies; 6+ messages in thread
From: shesha Sreenivasamurthy (shesha) @ 2015-10-20 17:04 UTC (permalink / raw)
To: dev
When an application using huge-pages crash or exists, the hugetlbfs backing files are not cleaned up. This is a patch to clean those files. There are multi-process DPDK applications that may be benefited by those backing files. Therefore, I have made that configurable so that the application that does not need those backing files can remove them, thus not changing the current default behavior. The application itself can clean it up, however the rationale behind DPDK cleaning it up is, DPDK created it and therefore, it is better it unlinks it.
Signed-off-by: Shesha Sreenivasamurthy <shesha@cisco.com<mailto:shesha@cisco.com>>
---
lib/librte_eal/common/eal_common_options.c | 12 +++++++++
lib/librte_eal/common/eal_internal_cfg.h | 1 +
lib/librte_eal/common/eal_options.h | 2 ++
lib/librte_eal/linuxapp/eal/eal_memory.c | 39 ++++++++++++++++++++++++++++++
4 files changed, 54 insertions(+)
diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
index 1f459ac..5fe6374 100644
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -79,6 +79,7 @@ eal_long_options[] = {
{OPT_MASTER_LCORE, 1, NULL, OPT_MASTER_LCORE_NUM },
{OPT_NO_HPET, 0, NULL, OPT_NO_HPET_NUM },
{OPT_NO_HUGE, 0, NULL, OPT_NO_HUGE_NUM },
+ {OPT_HUGE_UNLINK, 0, NULL, OPT_HUGE_UNLINK_NUM },
{OPT_NO_PCI, 0, NULL, OPT_NO_PCI_NUM },
{OPT_NO_SHCONF, 0, NULL, OPT_NO_SHCONF_NUM },
{OPT_PCI_BLACKLIST, 1, NULL, OPT_PCI_BLACKLIST_NUM },
@@ -722,6 +723,10 @@ eal_parse_common_option(int opt, const char *optarg,
conf->no_hugetlbfs = 1;
break;
+ case OPT_HUGE_UNLINK_NUM:
+ conf->hugepage_unlink = 1;
+ break;
+
case OPT_NO_PCI_NUM:
conf->no_pci = 1;
break;
@@ -856,6 +861,12 @@ eal_check_common_options(struct internal_config *internal_cfg)
return -1;
}
+ if (internal_cfg->no_hugetlbfs && internal_cfg->hugepage_unlink) {
+ RTE_LOG(ERR, EAL, "Option --"OPT_HUGE_UNLINK" cannot "
+ "be specified together with --"OPT_NO_HUGE"\n");
+ return -1;
+ }
+
if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) != 0 &&
rte_eal_devargs_type_count(RTE_DEVTYPE_BLACKLISTED_PCI) != 0) {
RTE_LOG(ERR, EAL, "Options blacklist (-b) and whitelist (-w) "
@@ -906,6 +917,7 @@ eal_common_usage(void)
" -h, --help This help\n"
"\nEAL options for DEBUG use only:\n"
" --"OPT_NO_HUGE" Use malloc instead of hugetlbfs\n"
+ " --"OPT_HUGE_UNLINK" Unlink hugepage backing file after initalization\n"
" --"OPT_NO_PCI" Disable PCI\n"
" --"OPT_NO_HPET" Disable HPET\n"
" --"OPT_NO_SHCONF" No shared config (mmap'd files)\n"
diff --git a/lib/librte_eal/common/eal_internal_cfg.h b/lib/librte_eal/common/eal_internal_cfg.h
index e2ecb0d..84b075f 100644
--- a/lib/librte_eal/common/eal_internal_cfg.h
+++ b/lib/librte_eal/common/eal_internal_cfg.h
@@ -64,6 +64,7 @@ struct internal_config {
volatile unsigned force_nchannel; /**< force number of channels */
volatile unsigned force_nrank; /**< force number of ranks */
volatile unsigned no_hugetlbfs; /**< true to disable hugetlbfs */
+ volatile unsigned hugepage_unlink; /** < true to unlink backing files */
volatile unsigned xen_dom0_support; /**< support app running on Xen Dom0*/
volatile unsigned no_pci; /**< true to disable PCI */
volatile unsigned no_hpet; /**< true to disable HPET */
diff --git a/lib/librte_eal/common/eal_options.h b/lib/librte_eal/common/eal_options.h
index f6714d9..745f38c 100644
--- a/lib/librte_eal/common/eal_options.h
+++ b/lib/librte_eal/common/eal_options.h
@@ -63,6 +63,8 @@ enum {
OPT_PROC_TYPE_NUM,
#define OPT_NO_HPET "no-hpet"
OPT_NO_HPET_NUM,
+#define OPT_HUGE_UNLINK "huge-unlink"
+ OPT_HUGE_UNLINK_NUM,
#define OPT_NO_HUGE "no-huge"
OPT_NO_HUGE_NUM,
#define OPT_NO_PCI "no-pci"
diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index ac2745e..2b86428 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -786,6 +786,37 @@ copy_hugepages_to_shared_mem(struct hugepage_file * dst, int dest_size,
return 0;
}
+static int
+unlink_hugepage_files(struct hugepage_file *hugepg_tbl,
+ struct hugepage_info *hpi,
+ unsigned num_hp_info)
+{
+ unsigned socket, size;
+ int page, nrpages = 0;
+
+ /* get total number of hugepages */
+ for (size = 0; size < num_hp_info; size++)
+ for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++)
+ nrpages += internal_config.hugepage_info[size].num_pages[socket];
+
+ for (size = 0; size < num_hp_info; size++) {
+ for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
+ for (page = 0; page < nrpages; page++) {
+ struct hugepage_file *hp = &hugepg_tbl[page];
+ if ((hp->size == hpi[size].hugepage_sz) &&
+ (hp->socket_id == (int) socket) &&
+ hp->final_va != NULL) {
+ if (unlink(hp->filepath)) {
+ RTE_LOG(WARNING, EAL, "%s(): Removing %s failed: %s\n",
+ __func__, hp->filepath, strerror(errno));
+ }
+ }
+ } /* foreach page */
+ } /* foreach socket */
+ } /* foreach pagesize */
+ return 0;
+}
+
/*
* unmaps hugepages that are not going to be used. since we originally allocate
* ALL hugepages (not just those we need), additional unmapping needs to be done.
@@ -1289,6 +1320,14 @@ rte_eal_hugepage_init(void)
goto fail;
}
+ /* free the hugepage backing files */
+ if (internal_config.hugepage_unlink &&
+ unlink_hugepage_files(tmp_hp, used_hp,
+ internal_config.num_hugepage_sizes) < 0) {
+ RTE_LOG(ERR, EAL, "Unlinking hugepage backing files failed!\n");
+ goto fail;
+ }
+
/* free the temporary hugepage table */
free(tmp_hp);
tmp_hp = NULL;
--
1.9.1
^ permalink raw reply [flat|nested] 6+ messages in thread
* [dpdk-dev] [PATCH v2] mem: command line option to delete hugepage backing files
[not found] ` <1445335331-9050-1-git-send-email-shesha@cisco.com>
2015-10-20 17:04 ` [dpdk-dev] [PATCH v2] mem: command " shesha Sreenivasamurthy (shesha)
@ 2015-10-20 17:29 ` shesha Sreenivasamurthy (shesha)
2015-10-21 14:25 ` Sergio Gonzalez Monroy
1 sibling, 1 reply; 6+ messages in thread
From: shesha Sreenivasamurthy (shesha) @ 2015-10-20 17:29 UTC (permalink / raw)
To: dev
When an application using huge-pages crash or exists, the hugetlbfs
backing files are not cleaned up. This is a patch to clean those files.
There are multi-process DPDK applications that may be benefited by those
backing files. Therefore, I have made that configurable so that the
application that does not need those backing files can remove them, thus
not changing the current default behavior. The application itself can
clean it up, however the rationale behind DPDK cleaning it up is, DPDK
created it and therefore, it is better it unlinks it.
Signed-off-by: Shesha Sreenivasamurthy <shesha@cisco.com>
---
lib/librte_eal/common/eal_common_options.c | 12 +++++++++
lib/librte_eal/common/eal_internal_cfg.h | 1 +
lib/librte_eal/common/eal_options.h | 2 ++
lib/librte_eal/linuxapp/eal/eal_memory.c | 39
++++++++++++++++++++++++++++++
4 files changed, 54 insertions(+)
diff --git a/lib/librte_eal/common/eal_common_options.c
b/lib/librte_eal/common/eal_common_options.c
index 1f459ac..5fe6374 100644
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -79,6 +79,7 @@ eal_long_options[] = {
{OPT_MASTER_LCORE, 1, NULL, OPT_MASTER_LCORE_NUM },
{OPT_NO_HPET, 0, NULL, OPT_NO_HPET_NUM },
{OPT_NO_HUGE, 0, NULL, OPT_NO_HUGE_NUM },
+ {OPT_HUGE_UNLINK, 0, NULL, OPT_HUGE_UNLINK_NUM },
{OPT_NO_PCI, 0, NULL, OPT_NO_PCI_NUM },
{OPT_NO_SHCONF, 0, NULL, OPT_NO_SHCONF_NUM },
{OPT_PCI_BLACKLIST, 1, NULL, OPT_PCI_BLACKLIST_NUM },
@@ -722,6 +723,10 @@ eal_parse_common_option(int opt, const char *optarg,
conf->no_hugetlbfs = 1;
break;
+ case OPT_HUGE_UNLINK_NUM:
+ conf->hugepage_unlink = 1;
+ break;
+
case OPT_NO_PCI_NUM:
conf->no_pci = 1;
break;
@@ -856,6 +861,12 @@ eal_check_common_options(struct internal_config
*internal_cfg)
return -1;
}
+ if (internal_cfg->no_hugetlbfs && internal_cfg->hugepage_unlink) {
+ RTE_LOG(ERR, EAL, "Option --"OPT_HUGE_UNLINK" cannot "
+ "be specified together with --"OPT_NO_HUGE"\n");
+ return -1;
+ }
+
if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) != 0 &&
rte_eal_devargs_type_count(RTE_DEVTYPE_BLACKLISTED_PCI) != 0) {
RTE_LOG(ERR, EAL, "Options blacklist (-b) and whitelist (-w) "
@@ -906,6 +917,7 @@ eal_common_usage(void)
" -h, --help This help\n"
"\nEAL options for DEBUG use only:\n"
" --"OPT_NO_HUGE" Use malloc instead of hugetlbfs\n"
+ " --"OPT_HUGE_UNLINK" Unlink hugepage backing file after
initalization\n"
" --"OPT_NO_PCI" Disable PCI\n"
" --"OPT_NO_HPET" Disable HPET\n"
" --"OPT_NO_SHCONF" No shared config (mmap'd files)\n"
diff --git a/lib/librte_eal/common/eal_internal_cfg.h
b/lib/librte_eal/common/eal_internal_cfg.h
index e2ecb0d..84b075f 100644
--- a/lib/librte_eal/common/eal_internal_cfg.h
+++ b/lib/librte_eal/common/eal_internal_cfg.h
@@ -64,6 +64,7 @@ struct internal_config {
volatile unsigned force_nchannel; /**< force number of channels */
volatile unsigned force_nrank; /**< force number of ranks */
volatile unsigned no_hugetlbfs; /**< true to disable hugetlbfs */
+ volatile unsigned hugepage_unlink; /** < true to unlink backing files */
volatile unsigned xen_dom0_support; /**< support app running on Xen
Dom0*/
volatile unsigned no_pci; /**< true to disable PCI */
volatile unsigned no_hpet; /**< true to disable HPET */
diff --git a/lib/librte_eal/common/eal_options.h
b/lib/librte_eal/common/eal_options.h
index f6714d9..745f38c 100644
--- a/lib/librte_eal/common/eal_options.h
+++ b/lib/librte_eal/common/eal_options.h
@@ -63,6 +63,8 @@ enum {
OPT_PROC_TYPE_NUM,
#define OPT_NO_HPET "no-hpet"
OPT_NO_HPET_NUM,
+#define OPT_HUGE_UNLINK "huge-unlink"
+ OPT_HUGE_UNLINK_NUM,
#define OPT_NO_HUGE "no-huge"
OPT_NO_HUGE_NUM,
#define OPT_NO_PCI "no-pci"
diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c
b/lib/librte_eal/linuxapp/eal/eal_memory.c
index ac2745e..2b86428 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -786,6 +786,37 @@ copy_hugepages_to_shared_mem(struct hugepage_file *
dst, int dest_size,
return 0;
}
+static int
+unlink_hugepage_files(struct hugepage_file *hugepg_tbl,
+ struct hugepage_info *hpi,
+ unsigned num_hp_info)
+{
+ unsigned socket, size;
+ int page, nrpages = 0;
+
+ /* get total number of hugepages */
+ for (size = 0; size < num_hp_info; size++)
+ for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++)
+ nrpages += internal_config.hugepage_info[size].num_pages[socket];
+
+ for (size = 0; size < num_hp_info; size++) {
+ for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
+ for (page = 0; page < nrpages; page++) {
+ struct hugepage_file *hp = &hugepg_tbl[page];
+ if ((hp->size == hpi[size].hugepage_sz) &&
+ (hp->socket_id == (int) socket) &&
+ hp->final_va != NULL) {
+ if (unlink(hp->filepath)) {
+ RTE_LOG(WARNING, EAL, "%s(): Removing %s failed: %s\n",
+ __func__, hp->filepath, strerror(errno));
+ }
+ }
+ } /* foreach page */
+ } /* foreach socket */
+ } /* foreach pagesize */
+ return 0;
+}
+
/*
* unmaps hugepages that are not going to be used. since we originally
allocate
* ALL hugepages (not just those we need), additional unmapping needs to
be done.
@@ -1289,6 +1320,14 @@ rte_eal_hugepage_init(void)
goto fail;
}
+ /* free the hugepage backing files */
+ if (internal_config.hugepage_unlink &&
+ unlink_hugepage_files(tmp_hp, used_hp,
+ internal_config.num_hugepage_sizes) < 0) {
+ RTE_LOG(ERR, EAL, "Unlinking hugepage backing files failed!\n");
+ goto fail;
+ }
+
/* free the temporary hugepage table */
free(tmp_hp);
tmp_hp = NULL;
--
1.9.1
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] [PATCH v2] mem: command line option to delete hugepage backing files
2015-10-20 17:29 ` shesha Sreenivasamurthy (shesha)
@ 2015-10-21 14:25 ` Sergio Gonzalez Monroy
0 siblings, 0 replies; 6+ messages in thread
From: Sergio Gonzalez Monroy @ 2015-10-21 14:25 UTC (permalink / raw)
To: shesha Sreenivasamurthy (shesha); +Cc: dev
Hi Shesha,
A few things:
- For some reason the patch didn't upload properly to patchwork and the
last bit of the patch is missing.
The following link shows that the patch fails basic testing/compilation:
http://dpdk.org/ml/archives/test-report/2015-October/000352.html
- You seem to be sending two copies of the same patch.
- Please update patchwork status for v1 patch. I think this is because
there were two copies of it [patch id 7606]
On 20/10/2015 18:29, shesha Sreenivasamurthy (shesha) wrote:
> When an application using huge-pages crash or exists, the hugetlbfs
> backing files are not cleaned up. This is a patch to clean those files.
> There are multi-process DPDK applications that may be benefited by those
> backing files. Therefore, I have made that configurable so that the
> application that does not need those backing files can remove them, thus
> not changing the current default behavior. The application itself can
> clean it up, however the rationale behind DPDK cleaning it up is, DPDK
> created it and therefore, it is better it unlinks it.
>
> Signed-off-by: Shesha Sreenivasamurthy <shesha@cisco.com>
> ---
> lib/librte_eal/common/eal_common_options.c | 12 +++++++++
> lib/librte_eal/common/eal_internal_cfg.h | 1 +
> lib/librte_eal/common/eal_options.h | 2 ++
> lib/librte_eal/linuxapp/eal/eal_memory.c | 39
> ++++++++++++++++++++++++++++++
> 4 files changed, 54 insertions(+)
>
> diff --git a/lib/librte_eal/common/eal_common_options.c
> b/lib/librte_eal/common/eal_common_options.c
> index 1f459ac..5fe6374 100644
> --- a/lib/librte_eal/common/eal_common_options.c
> +++ b/lib/librte_eal/common/eal_common_options.c
> @@ -79,6 +79,7 @@ eal_long_options[] = {
> {OPT_MASTER_LCORE, 1, NULL, OPT_MASTER_LCORE_NUM },
> {OPT_NO_HPET, 0, NULL, OPT_NO_HPET_NUM },
> {OPT_NO_HUGE, 0, NULL, OPT_NO_HUGE_NUM },
> + {OPT_HUGE_UNLINK, 0, NULL, OPT_HUGE_UNLINK_NUM },
> {OPT_NO_PCI, 0, NULL, OPT_NO_PCI_NUM },
> {OPT_NO_SHCONF, 0, NULL, OPT_NO_SHCONF_NUM },
> {OPT_PCI_BLACKLIST, 1, NULL, OPT_PCI_BLACKLIST_NUM },
> @@ -722,6 +723,10 @@ eal_parse_common_option(int opt, const char *optarg,
> conf->no_hugetlbfs = 1;
> break;
>
> + case OPT_HUGE_UNLINK_NUM:
> + conf->hugepage_unlink = 1;
> + break;
> +
> case OPT_NO_PCI_NUM:
> conf->no_pci = 1;
> break;
> @@ -856,6 +861,12 @@ eal_check_common_options(struct internal_config
> *internal_cfg)
> return -1;
> }
>
> + if (internal_cfg->no_hugetlbfs && internal_cfg->hugepage_unlink) {
> + RTE_LOG(ERR, EAL, "Option --"OPT_HUGE_UNLINK" cannot "
> + "be specified together with --"OPT_NO_HUGE"\n");
> + return -1;
> + }
> +
> if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) != 0 &&
> rte_eal_devargs_type_count(RTE_DEVTYPE_BLACKLISTED_PCI) != 0) {
> RTE_LOG(ERR, EAL, "Options blacklist (-b) and whitelist (-w) "
> @@ -906,6 +917,7 @@ eal_common_usage(void)
> " -h, --help This help\n"
> "\nEAL options for DEBUG use only:\n"
> " --"OPT_NO_HUGE" Use malloc instead of hugetlbfs\n"
> + " --"OPT_HUGE_UNLINK" Unlink hugepage backing file after
> initalization\n"
> " --"OPT_NO_PCI" Disable PCI\n"
> " --"OPT_NO_HPET" Disable HPET\n"
> " --"OPT_NO_SHCONF" No shared config (mmap'd files)\n"
> diff --git a/lib/librte_eal/common/eal_internal_cfg.h
> b/lib/librte_eal/common/eal_internal_cfg.h
> index e2ecb0d..84b075f 100644
> --- a/lib/librte_eal/common/eal_internal_cfg.h
> +++ b/lib/librte_eal/common/eal_internal_cfg.h
> @@ -64,6 +64,7 @@ struct internal_config {
> volatile unsigned force_nchannel; /**< force number of channels */
> volatile unsigned force_nrank; /**< force number of ranks */
> volatile unsigned no_hugetlbfs; /**< true to disable hugetlbfs */
> + volatile unsigned hugepage_unlink; /** < true to unlink backing files */
> volatile unsigned xen_dom0_support; /**< support app running on Xen
> Dom0*/
> volatile unsigned no_pci; /**< true to disable PCI */
> volatile unsigned no_hpet; /**< true to disable HPET */
> diff --git a/lib/librte_eal/common/eal_options.h
> b/lib/librte_eal/common/eal_options.h
> index f6714d9..745f38c 100644
> --- a/lib/librte_eal/common/eal_options.h
> +++ b/lib/librte_eal/common/eal_options.h
> @@ -63,6 +63,8 @@ enum {
> OPT_PROC_TYPE_NUM,
> #define OPT_NO_HPET "no-hpet"
> OPT_NO_HPET_NUM,
> +#define OPT_HUGE_UNLINK "huge-unlink"
> + OPT_HUGE_UNLINK_NUM,
> #define OPT_NO_HUGE "no-huge"
> OPT_NO_HUGE_NUM,
> #define OPT_NO_PCI "no-pci"
> diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c
> b/lib/librte_eal/linuxapp/eal/eal_memory.c
> index ac2745e..2b86428 100644
> --- a/lib/librte_eal/linuxapp/eal/eal_memory.c
> +++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
> @@ -786,6 +786,37 @@ copy_hugepages_to_shared_mem(struct hugepage_file *
> dst, int dest_size,
> return 0;
> }
>
> +static int
> +unlink_hugepage_files(struct hugepage_file *hugepg_tbl,
> + struct hugepage_info *hpi,
> + unsigned num_hp_info)
> +{
> + unsigned socket, size;
> + int page, nrpages = 0;
> +
> + /* get total number of hugepages */
> + for (size = 0; size < num_hp_info; size++)
> + for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++)
> + nrpages += internal_config.hugepage_info[size].num_pages[socket];
> +
> + for (size = 0; size < num_hp_info; size++) {
> + for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
> + for (page = 0; page < nrpages; page++) {
> + struct hugepage_file *hp = &hugepg_tbl[page];
> + if ((hp->size == hpi[size].hugepage_sz) &&
> + (hp->socket_id == (int) socket) &&
> + hp->final_va != NULL) {
Is all this necessary? At this point, all unneeded hugepages have been
released and their final_va set to NULL.
I think we just need to calculate the total number of hugepages and loop
through all hugepg_tbl entries checking va_final != NULL, then unlink.
Sergio
> + if (unlink(hp->filepath)) {
> + RTE_LOG(WARNING, EAL, "%s(): Removing %s failed: %s\n",
> + __func__, hp->filepath, strerror(errno));
> + }
> + }
> + } /* foreach page */
> + } /* foreach socket */
> + } /* foreach pagesize */
> + return 0;
> +}
> +
> /*
> * unmaps hugepages that are not going to be used. since we originally
> allocate
> * ALL hugepages (not just those we need), additional unmapping needs to
> be done.
> @@ -1289,6 +1320,14 @@ rte_eal_hugepage_init(void)
> goto fail;
> }
>
> + /* free the hugepage backing files */
> + if (internal_config.hugepage_unlink &&
> + unlink_hugepage_files(tmp_hp, used_hp,
> + internal_config.num_hugepage_sizes) < 0) {
> + RTE_LOG(ERR, EAL, "Unlinking hugepage backing files failed!\n");
> + goto fail;
> + }
> +
> /* free the temporary hugepage table */
> free(tmp_hp);
> tmp_hp = NULL;
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2015-10-21 14:25 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <1444817040-7974-1-git-send-email-shesha@cisco.com>
2015-10-14 17:05 ` [dpdk-dev] [PATCH] mem: Command line option to delete hugepage backing files shesha Sreenivasamurthy (shesha)
2015-10-14 18:59 ` shesha Sreenivasamurthy (shesha)
2015-10-20 15:23 ` Gonzalez Monroy, Sergio
[not found] ` <1445335331-9050-1-git-send-email-shesha@cisco.com>
2015-10-20 17:04 ` [dpdk-dev] [PATCH v2] mem: command " shesha Sreenivasamurthy (shesha)
2015-10-20 17:29 ` shesha Sreenivasamurthy (shesha)
2015-10-21 14:25 ` Sergio Gonzalez Monroy
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