[dpdk-dev,v5,5/8] Move common functions in eal_memory.c

Message ID 1428608412-31191-6-git-send-email-rkerur@gmail.com (mailing list archive)
State Superseded, archived
Headers

Commit Message

Ravi Kerur April 9, 2015, 7:40 p.m. UTC
  Changes in v5
Rebase to latest code.

Changes in v4
Make rte_eal_hugepage_init and rte_eal_hugepage_attach as
wrapper functions for BSD.

Changes in v3
Changed subject to be more explicit on file name inclusion.

Changes in v2
Use common function names rte_eal_hugepage_init and
rte_eal_hugepage_attach for BSD and Linux. Update comments about its
actuality in function declaration.

Changes in v1
Move common functions in eal_memory.c to librte_eal/common/
eal_common_memory.c file.

Following functions are moved to eal_common_memory.c file

static int rte_eal_memdevice_init(void); int rte_eal_memory_init(void);

Fix checkpatch warnings and errors.

Signed-off-by: Ravi Kerur <rkerur@gmail.com>
---
 lib/librte_eal/bsdapp/eal/eal_memory.c    | 47 +++++++++++--------------------
 lib/librte_eal/common/eal_common_memory.c | 38 +++++++++++++++++++++++--
 lib/librte_eal/common/eal_private.h       | 22 +++++++++++++++
 lib/librte_eal/linuxapp/eal/eal_memory.c  | 36 ++---------------------
 4 files changed, 76 insertions(+), 67 deletions(-)
  

Comments

Thomas Monjalon April 16, 2015, 8:52 a.m. UTC | #1
2015-04-09 12:40, Ravi Kerur:
> Changes in v5
> Rebase to latest code.
> 
> Changes in v4
> Make rte_eal_hugepage_init and rte_eal_hugepage_attach as
> wrapper functions for BSD.
> 
> Changes in v3
> Changed subject to be more explicit on file name inclusion.
> 
> Changes in v2
> Use common function names rte_eal_hugepage_init and
> rte_eal_hugepage_attach for BSD and Linux. Update comments about its
> actuality in function declaration.
> 
> Changes in v1
> Move common functions in eal_memory.c to librte_eal/common/
> eal_common_memory.c file.
> 
> Following functions are moved to eal_common_memory.c file
> 
> static int rte_eal_memdevice_init(void); int rte_eal_memory_init(void);
> 
> Fix checkpatch warnings and errors.
> 
> Signed-off-by: Ravi Kerur <rkerur@gmail.com>
[...]
> +/**
> + * This function prepares physical memory mapping
> + * i.e. hugepages on Linux and
> + *      contigmem on BSD.

OK

> + * It is a wrapper function for BSD which will
> + * internally call contigmem_init.

Please avoid such comment which is difficult to maintain and not really useful.

> + * It is a wrapper function for BSD which will
> + * internally call contigmem_attach.

Same comment.

Except the above comments, it seems goods.
Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>

Thanks
  
Ravi Kerur April 16, 2015, 10:11 p.m. UTC | #2
On Thu, Apr 16, 2015 at 1:52 AM, Thomas Monjalon <thomas.monjalon@6wind.com>
wrote:

> 2015-04-09 12:40, Ravi Kerur:
> > Changes in v5
> > Rebase to latest code.
> >
> > Changes in v4
> > Make rte_eal_hugepage_init and rte_eal_hugepage_attach as
> > wrapper functions for BSD.
> >
> > Changes in v3
> > Changed subject to be more explicit on file name inclusion.
> >
> > Changes in v2
> > Use common function names rte_eal_hugepage_init and
> > rte_eal_hugepage_attach for BSD and Linux. Update comments about its
> > actuality in function declaration.
> >
> > Changes in v1
> > Move common functions in eal_memory.c to librte_eal/common/
> > eal_common_memory.c file.
> >
> > Following functions are moved to eal_common_memory.c file
> >
> > static int rte_eal_memdevice_init(void); int rte_eal_memory_init(void);
> >
> > Fix checkpatch warnings and errors.
> >
> > Signed-off-by: Ravi Kerur <rkerur@gmail.com>
> [...]
> > +/**
> > + * This function prepares physical memory mapping
> > + * i.e. hugepages on Linux and
> > + *      contigmem on BSD.
>
> OK
>
> > + * It is a wrapper function for BSD which will
> > + * internally call contigmem_init.
>
> Please avoid such comment which is difficult to maintain and not really
> useful.
>
> > + * It is a wrapper function for BSD which will
> > + * internally call contigmem_attach.
>
> Same comment.
>
> Except the above comments, it seems goods.
> Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>
>
> Thanks
>

Will fix comments in next version.
  

Patch

diff --git a/lib/librte_eal/bsdapp/eal/eal_memory.c b/lib/librte_eal/bsdapp/eal/eal_memory.c
index 33ebd0f..77c27b3 100644
--- a/lib/librte_eal/bsdapp/eal/eal_memory.c
+++ b/lib/librte_eal/bsdapp/eal/eal_memory.c
@@ -59,7 +59,7 @@  rte_mem_virt2phy(const void *virtaddr)
 	return RTE_BAD_PHYS_ADDR;
 }
 
-static int
+static inline int
 rte_eal_contigmem_init(void)
 {
 	struct rte_mem_config *mcfg;
@@ -131,7 +131,16 @@  rte_eal_contigmem_init(void)
 	return 0;
 }
 
-static int
+/*
+ * Wrapper function to initialize contigmem.
+ */
+int
+rte_eal_hugepage_init(void)
+{
+	return rte_eal_contigmem_init();
+}
+
+static inline int
 rte_eal_contigmem_attach(void)
 {
 	const struct hugepage_info *hpi;
@@ -192,35 +201,11 @@  error:
 	return -1;
 }
 
-
-static int
-rte_eal_memdevice_init(void)
-{
-	struct rte_config *config;
-
-	if (rte_eal_process_type() == RTE_PROC_SECONDARY)
-		return 0;
-
-	config = rte_eal_get_configuration();
-	config->mem_config->nchannel = internal_config.force_nchannel;
-	config->mem_config->nrank = internal_config.force_nrank;
-
-	return 0;
-}
-
-/* init memory subsystem */
+/*
+ * Wrapper function to attach contigmem.
+ */
 int
-rte_eal_memory_init(void)
+rte_eal_hugepage_attach(void)
 {
-	RTE_LOG(INFO, EAL, "Setting up physically contiguous memory...\n");
-	const int retval = rte_eal_process_type() == RTE_PROC_PRIMARY ?
-			rte_eal_contigmem_init() :
-			rte_eal_contigmem_attach();
-	if (retval < 0)
-		return -1;
-
-	if (internal_config.no_shconf == 0 && rte_eal_memdevice_init() < 0)
-		return -1;
-
-	return 0;
+	return rte_eal_contigmem_attach();
 }
diff --git a/lib/librte_eal/common/eal_common_memory.c b/lib/librte_eal/common/eal_common_memory.c
index 9a07b1e..10ff0bc 100644
--- a/lib/librte_eal/common/eal_common_memory.c
+++ b/lib/librte_eal/common/eal_common_memory.c
@@ -45,6 +45,7 @@ 
 #include <rte_log.h>
 
 #include "eal_private.h"
+#include "eal_internal_cfg.h"
 
 /*
  * Return a pointer to a read-only table of struct rte_physmem_desc
@@ -69,7 +70,7 @@  rte_eal_get_physmem_size(void)
 	/* get pointer to global configuration */
 	mcfg = rte_eal_get_configuration()->mem_config;
 
-	for (i=0; i<RTE_MAX_MEMSEG; i++) {
+	for (i = 0; i < RTE_MAX_MEMSEG; i++) {
 		if (mcfg->memseg[i].addr == NULL)
 			break;
 
@@ -89,7 +90,7 @@  rte_dump_physmem_layout(FILE *f)
 	/* get pointer to global configuration */
 	mcfg = rte_eal_get_configuration()->mem_config;
 
-	for (i=0; i<RTE_MAX_MEMSEG; i++) {
+	for (i = 0; i < RTE_MAX_MEMSEG; i++) {
 		if (mcfg->memseg[i].addr == NULL)
 			break;
 
@@ -118,3 +119,36 @@  unsigned rte_memory_get_nrank(void)
 {
 	return rte_eal_get_configuration()->mem_config->nrank;
 }
+
+static int
+rte_eal_memdevice_init(void)
+{
+	struct rte_config *config;
+
+	if (rte_eal_process_type() == RTE_PROC_SECONDARY)
+		return 0;
+
+	config = rte_eal_get_configuration();
+	config->mem_config->nchannel = internal_config.force_nchannel;
+	config->mem_config->nrank = internal_config.force_nrank;
+
+	return 0;
+}
+
+/* init memory subsystem */
+int
+rte_eal_memory_init(void)
+{
+	RTE_LOG(INFO, EAL, "Setting up physically contiguous memory...\n");
+	const int retval = rte_eal_process_type() == RTE_PROC_PRIMARY ?
+			rte_eal_hugepage_init() :
+			rte_eal_hugepage_attach();
+
+	if (retval < 0)
+		return -1;
+
+	if (internal_config.no_shconf == 0 && rte_eal_memdevice_init() < 0)
+		return -1;
+
+	return 0;
+}
diff --git a/lib/librte_eal/common/eal_private.h b/lib/librte_eal/common/eal_private.h
index 7ee1eb2..fde1fc9 100644
--- a/lib/librte_eal/common/eal_private.h
+++ b/lib/librte_eal/common/eal_private.h
@@ -348,4 +348,26 @@  int set_tsc_freq_from_clock(void);
  */
 void rte_set_tsc_hz(uint64_t tsc_hz);
 
+/**
+ * This function prepares physical memory mapping
+ * i.e. hugepages on Linux and
+ *      contigmem on BSD.
+ * It is a wrapper function for BSD which will
+ * internally call contigmem_init.
+ *
+ * This function is private to the EAL.
+ */
+int rte_eal_hugepage_init(void);
+
+/**
+ * This function creates memory mapping in secondary
+ * i.e. hugepages on Linux and
+ *      contigmem on BSD.
+ * It is a wrapper function for BSD which will
+ * internally call contigmem_attach.
+ *
+ * This function is private to the EAL.
+ */
+int rte_eal_hugepage_attach(void);
+
 #endif /* _EAL_PRIVATE_H_ */
diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index 5f9f92e..c83a2cb 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -1030,7 +1030,7 @@  calc_num_pages_per_socket(uint64_t * memory,
  *  6. unmap the first mapping
  *  7. fill memsegs in configuration with contiguous zones
  */
-static int
+int
 rte_eal_hugepage_init(void)
 {
 	struct rte_mem_config *mcfg;
@@ -1368,7 +1368,7 @@  getFileSize(int fd)
  * configuration and finds the hugepages which form that segment, mapping them
  * in order to form a contiguous block in the virtual memory space
  */
-static int
+int
 rte_eal_hugepage_attach(void)
 {
 	const struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
@@ -1529,35 +1529,3 @@  error:
 	return -1;
 }
 
-static int
-rte_eal_memdevice_init(void)
-{
-	struct rte_config *config;
-
-	if (rte_eal_process_type() == RTE_PROC_SECONDARY)
-		return 0;
-
-	config = rte_eal_get_configuration();
-	config->mem_config->nchannel = internal_config.force_nchannel;
-	config->mem_config->nrank = internal_config.force_nrank;
-
-	return 0;
-}
-
-
-/* init memory subsystem */
-int
-rte_eal_memory_init(void)
-{
-	RTE_LOG(INFO, EAL, "Setting up memory...\n");
-	const int retval = rte_eal_process_type() == RTE_PROC_PRIMARY ?
-			rte_eal_hugepage_init() :
-			rte_eal_hugepage_attach();
-	if (retval < 0)
-		return -1;
-
-	if (internal_config.no_shconf == 0 && rte_eal_memdevice_init() < 0)
-		return -1;
-
-	return 0;
-}