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Commit 9bfa8496 authored by Dan Williams's avatar Dan Williams
Browse files

tools/testing/libnvdimm: cleanup mock resource lookup 



Push the locking around get_nfit_res() into get_nfit_res().

Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 3fa96268

tools/testing/nvdimm/test/iomap.c

+23 −46
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <linux/module.h>

#include <linux/types.h>

#include <linux/io.h>

#include <linux/mm.h>

#include "nfit_test.h"



static LIST_HEAD(iomap_head);
@@ -41,7 +42,7 @@ void nfit_test_teardown(void) 
}

EXPORT_SYMBOL(nfit_test_teardown);



static struct nfit_test_resource *get_nfit_res(resource_size_t resource)

static struct nfit_test_resource *__get_nfit_res(resource_size_t resource)

{

	struct iomap_ops *ops;
@@ -51,14 +52,22 @@ static struct nfit_test_resource *get_nfit_res(resource_size_t resource) 
	return NULL;

}



void __iomem *__nfit_test_ioremap(resource_size_t offset, unsigned long size,

		void __iomem *(*fallback_fn)(resource_size_t, unsigned long))

static struct nfit_test_resource *get_nfit_res(resource_size_t resource)

{

	struct nfit_test_resource *nfit_res;

	struct nfit_test_resource *res;



	rcu_read_lock();

	nfit_res = get_nfit_res(offset);

	res = __get_nfit_res(resource);

	rcu_read_unlock();



	return res;

}



void __iomem *__nfit_test_ioremap(resource_size_t offset, unsigned long size,

		void __iomem *(*fallback_fn)(resource_size_t, unsigned long))

{

	struct nfit_test_resource *nfit_res = get_nfit_res(offset);



	if (nfit_res)

		return (void __iomem *) nfit_res->buf + offset

			- nfit_res->res->start;
@@ -68,11 +77,8 @@ void __iomem *__nfit_test_ioremap(resource_size_t offset, unsigned long size, 
void __iomem *__wrap_devm_ioremap_nocache(struct device *dev,

		resource_size_t offset, unsigned long size)

{

	struct nfit_test_resource *nfit_res;

	struct nfit_test_resource *nfit_res = get_nfit_res(offset);



	rcu_read_lock();

	nfit_res = get_nfit_res(offset);

	rcu_read_unlock();

	if (nfit_res)

		return (void __iomem *) nfit_res->buf + offset

			- nfit_res->res->start;
@@ -83,11 +89,8 @@ EXPORT_SYMBOL(__wrap_devm_ioremap_nocache); 
void *__wrap_devm_memremap(struct device *dev, resource_size_t offset,

		size_t size, unsigned long flags)

{

	struct nfit_test_resource *nfit_res;

	struct nfit_test_resource *nfit_res = get_nfit_res(offset);



	rcu_read_lock();

	nfit_res = get_nfit_res(offset);

	rcu_read_unlock();

	if (nfit_res)

		return nfit_res->buf + offset - nfit_res->res->start;

	return devm_memremap(dev, offset, size, flags);
@@ -102,11 +105,8 @@ void *__wrap_devm_memremap_pages(struct device *dev, struct resource *res, 
		struct percpu_ref *ref, struct vmem_altmap *altmap)

{

	resource_size_t offset = res->start;

	struct nfit_test_resource *nfit_res;

	struct nfit_test_resource *nfit_res = get_nfit_res(offset);



	rcu_read_lock();

	nfit_res = get_nfit_res(offset);

	rcu_read_unlock();

	if (nfit_res)

		return nfit_res->buf + offset - nfit_res->res->start;

	return devm_memremap_pages(dev, res, ref, altmap);
@@ -115,11 +115,8 @@ EXPORT_SYMBOL(__wrap_devm_memremap_pages); 


pfn_t __wrap_phys_to_pfn_t(dma_addr_t addr, unsigned long flags)

{

	struct nfit_test_resource *nfit_res;

	struct nfit_test_resource *nfit_res = get_nfit_res(addr);



	rcu_read_lock();

	nfit_res = get_nfit_res(addr);

	rcu_read_unlock();

	if (nfit_res)

		flags &= ~PFN_MAP;

        return phys_to_pfn_t(addr, flags);
@@ -130,11 +127,8 @@ EXPORT_SYMBOL(__wrap_phys_to_pfn_t); 
void *__wrap_devm_memremap_pages(struct device *dev, struct resource *res)

{

	resource_size_t offset = res->start;

	struct nfit_test_resource *nfit_res;

	struct nfit_test_resource *nfit_res = get_nfit_res(offset);



	rcu_read_lock();

	nfit_res = get_nfit_res(offset);

	rcu_read_unlock();

	if (nfit_res)

		return nfit_res->buf + offset - nfit_res->res->start;

	return devm_memremap_pages(dev, res);
@@ -145,11 +139,8 @@ EXPORT_SYMBOL(__wrap_devm_memremap_pages); 
void *__wrap_memremap(resource_size_t offset, size_t size,

		unsigned long flags)

{

	struct nfit_test_resource *nfit_res;

	struct nfit_test_resource *nfit_res = get_nfit_res(offset);



	rcu_read_lock();

	nfit_res = get_nfit_res(offset);

	rcu_read_unlock();

	if (nfit_res)

		return nfit_res->buf + offset - nfit_res->res->start;

	return memremap(offset, size, flags);
@@ -158,11 +149,8 @@ EXPORT_SYMBOL(__wrap_memremap); 


void __wrap_devm_memunmap(struct device *dev, void *addr)

{

	struct nfit_test_resource *nfit_res;

	struct nfit_test_resource *nfit_res = get_nfit_res((long) addr);



	rcu_read_lock();

	nfit_res = get_nfit_res((unsigned long) addr);

	rcu_read_unlock();

	if (nfit_res)

		return;

	return devm_memunmap(dev, addr);
@@ -183,11 +171,7 @@ EXPORT_SYMBOL(__wrap_ioremap_wc); 


void __wrap_iounmap(volatile void __iomem *addr)

{

	struct nfit_test_resource *nfit_res;



	rcu_read_lock();

	nfit_res = get_nfit_res((unsigned long) addr);

	rcu_read_unlock();

	struct nfit_test_resource *nfit_res = get_nfit_res((long) addr);

	if (nfit_res)

		return;

	return iounmap(addr);
@@ -196,11 +180,8 @@ EXPORT_SYMBOL(__wrap_iounmap); 


void __wrap_memunmap(void *addr)

{

	struct nfit_test_resource *nfit_res;

	struct nfit_test_resource *nfit_res = get_nfit_res((long) addr);



	rcu_read_lock();

	nfit_res = get_nfit_res((unsigned long) addr);

	rcu_read_unlock();

	if (nfit_res)

		return;

	return memunmap(addr);
@@ -214,9 +195,7 @@ static struct resource *nfit_test_request_region(struct device *dev, 
	struct nfit_test_resource *nfit_res;



	if (parent == &iomem_resource) {

		rcu_read_lock();

		nfit_res = get_nfit_res(start);

		rcu_read_unlock();

		if (nfit_res) {

			struct resource *res = nfit_res->res + 1;
@@ -266,9 +245,7 @@ void __wrap___release_region(struct resource *parent, resource_size_t start, 
	struct nfit_test_resource *nfit_res;



	if (parent == &iomem_resource) {

		rcu_read_lock();

		nfit_res = get_nfit_res(start);

		rcu_read_unlock();

		if (nfit_res) {

			struct resource *res = nfit_res->res + 1;