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From: AKASHI Takahiro <takahiro.akashi@linaro.org>
To: catalin.marinas@arm.com, will.deacon@arm.com,
	dhowells@redhat.com, vgoyal@redhat.com,
	herbert@gondor.apana.org.au, davem@davemloft.net,
	dyoung@redhat.com, bhe@redhat.com, arnd@arndb.de,
	schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com
Cc: prudo@linux.ibm.com, ard.biesheuvel@linaro.org,
	james.morse@arm.com, bhsharma@redhat.com,
	kexec@lists.infradead.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	AKASHI Takahiro <takahiro.akashi@linaro.org>
Subject: [PATCH v14 05/16] kexec_file: kexec_walk_memblock() only walks a dedicated region at kdump
Date: Fri,  7 Sep 2018 16:56:42 +0900	[thread overview]
Message-ID: <20180907075653.4696-6-takahiro.akashi@linaro.org> (raw)
In-Reply-To: <20180907075653.4696-1-takahiro.akashi@linaro.org>

In kdump case, there exists only one dedicated memblock region as usable
memory (crashk_res). With this patch, kexec_walk_memblock() runs a given
callback function on this region.

Cosmetic change: 0 to MEMBLOCK_NONE at for_each_free_mem_range*()

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
---
 kernel/kexec_file.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c
index 370d7eab49fe..2f615a7968dd 100644
--- a/kernel/kexec_file.c
+++ b/kernel/kexec_file.c
@@ -511,8 +511,11 @@ static int kexec_walk_memblock(struct kexec_buf *kbuf,
 	phys_addr_t mstart, mend;
 	struct resource res = { };
 
+	if (kbuf->image->type == KEXEC_TYPE_CRASH)
+		return func(&crashk_res, kbuf);
+
 	if (kbuf->top_down) {
-		for_each_free_mem_range_reverse(i, NUMA_NO_NODE, 0,
+		for_each_free_mem_range_reverse(i, NUMA_NO_NODE, MEMBLOCK_NONE,
 						&mstart, &mend, NULL) {
 			/*
 			 * In memblock, end points to the first byte after the
@@ -526,8 +529,8 @@ static int kexec_walk_memblock(struct kexec_buf *kbuf,
 				break;
 		}
 	} else {
-		for_each_free_mem_range(i, NUMA_NO_NODE, 0, &mstart, &mend,
-					NULL) {
+		for_each_free_mem_range(i, NUMA_NO_NODE, MEMBLOCK_NONE,
+					&mstart, &mend, NULL) {
 			/*
 			 * In memblock, end points to the first byte after the
 			 * range while in kexec, end points to the last byte
-- 
2.18.0


WARNING: multiple messages have this Message-ID (diff)
From: takahiro.akashi@linaro.org (AKASHI Takahiro)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v14 05/16] kexec_file: kexec_walk_memblock() only walks a dedicated region at kdump
Date: Fri,  7 Sep 2018 16:56:42 +0900	[thread overview]
Message-ID: <20180907075653.4696-6-takahiro.akashi@linaro.org> (raw)
In-Reply-To: <20180907075653.4696-1-takahiro.akashi@linaro.org>

In kdump case, there exists only one dedicated memblock region as usable
memory (crashk_res). With this patch, kexec_walk_memblock() runs a given
callback function on this region.

Cosmetic change: 0 to MEMBLOCK_NONE at for_each_free_mem_range*()

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
---
 kernel/kexec_file.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c
index 370d7eab49fe..2f615a7968dd 100644
--- a/kernel/kexec_file.c
+++ b/kernel/kexec_file.c
@@ -511,8 +511,11 @@ static int kexec_walk_memblock(struct kexec_buf *kbuf,
 	phys_addr_t mstart, mend;
 	struct resource res = { };
 
+	if (kbuf->image->type == KEXEC_TYPE_CRASH)
+		return func(&crashk_res, kbuf);
+
 	if (kbuf->top_down) {
-		for_each_free_mem_range_reverse(i, NUMA_NO_NODE, 0,
+		for_each_free_mem_range_reverse(i, NUMA_NO_NODE, MEMBLOCK_NONE,
 						&mstart, &mend, NULL) {
 			/*
 			 * In memblock, end points to the first byte after the
@@ -526,8 +529,8 @@ static int kexec_walk_memblock(struct kexec_buf *kbuf,
 				break;
 		}
 	} else {
-		for_each_free_mem_range(i, NUMA_NO_NODE, 0, &mstart, &mend,
-					NULL) {
+		for_each_free_mem_range(i, NUMA_NO_NODE, MEMBLOCK_NONE,
+					&mstart, &mend, NULL) {
 			/*
 			 * In memblock, end points to the first byte after the
 			 * range while in kexec, end points to the last byte
-- 
2.18.0

WARNING: multiple messages have this Message-ID (diff)
From: AKASHI Takahiro <takahiro.akashi@linaro.org>
To: catalin.marinas@arm.com, will.deacon@arm.com,
	dhowells@redhat.com, vgoyal@redhat.com,
	herbert@gondor.apana.org.au, davem@davemloft.net,
	dyoung@redhat.com, bhe@redhat.com, arnd@arndb.de,
	schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com
Cc: ard.biesheuvel@linaro.org, bhsharma@redhat.com,
	kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
	prudo@linux.ibm.com, AKASHI Takahiro <takahiro.akashi@linaro.org>,
	james.morse@arm.com, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v14 05/16] kexec_file: kexec_walk_memblock() only walks a dedicated region at kdump
Date: Fri,  7 Sep 2018 16:56:42 +0900	[thread overview]
Message-ID: <20180907075653.4696-6-takahiro.akashi@linaro.org> (raw)
In-Reply-To: <20180907075653.4696-1-takahiro.akashi@linaro.org>

In kdump case, there exists only one dedicated memblock region as usable
memory (crashk_res). With this patch, kexec_walk_memblock() runs a given
callback function on this region.

Cosmetic change: 0 to MEMBLOCK_NONE at for_each_free_mem_range*()

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
---
 kernel/kexec_file.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c
index 370d7eab49fe..2f615a7968dd 100644
--- a/kernel/kexec_file.c
+++ b/kernel/kexec_file.c
@@ -511,8 +511,11 @@ static int kexec_walk_memblock(struct kexec_buf *kbuf,
 	phys_addr_t mstart, mend;
 	struct resource res = { };
 
+	if (kbuf->image->type == KEXEC_TYPE_CRASH)
+		return func(&crashk_res, kbuf);
+
 	if (kbuf->top_down) {
-		for_each_free_mem_range_reverse(i, NUMA_NO_NODE, 0,
+		for_each_free_mem_range_reverse(i, NUMA_NO_NODE, MEMBLOCK_NONE,
 						&mstart, &mend, NULL) {
 			/*
 			 * In memblock, end points to the first byte after the
@@ -526,8 +529,8 @@ static int kexec_walk_memblock(struct kexec_buf *kbuf,
 				break;
 		}
 	} else {
-		for_each_free_mem_range(i, NUMA_NO_NODE, 0, &mstart, &mend,
-					NULL) {
+		for_each_free_mem_range(i, NUMA_NO_NODE, MEMBLOCK_NONE,
+					&mstart, &mend, NULL) {
 			/*
 			 * In memblock, end points to the first byte after the
 			 * range while in kexec, end points to the last byte
-- 
2.18.0


_______________________________________________
kexec mailing list
kexec@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kexec

  parent reply	other threads:[~2018-09-07  7:58 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-07  7:56 [PATCH v14 00/16] subject: arm64: kexec: add kexec_file_load() support AKASHI Takahiro
2018-09-07  7:56 ` AKASHI Takahiro
2018-09-07  7:56 ` AKASHI Takahiro
2018-09-07  7:56 ` [PATCH v14 01/16] asm-generic: add kexec_file_load system call to unistd.h AKASHI Takahiro
2018-09-07  7:56   ` AKASHI Takahiro
2018-09-07  7:56   ` AKASHI Takahiro
2018-09-07  7:56 ` [PATCH v14 02/16] kexec_file: make kexec_image_post_load_cleanup_default() global AKASHI Takahiro
2018-09-07  7:56   ` AKASHI Takahiro
2018-09-07  7:56   ` AKASHI Takahiro
2018-09-07  7:56 ` [PATCH v14 03/16] s390, kexec_file: drop arch_kexec_mem_walk() AKASHI Takahiro
2018-09-07  7:56   ` AKASHI Takahiro
2018-09-07  7:56   ` AKASHI Takahiro
2018-09-07  7:56 ` [PATCH v14 04/16] powerpc, kexec_file: factor out memblock-based arch_kexec_walk_mem() AKASHI Takahiro
2018-09-07  7:56   ` AKASHI Takahiro
2018-09-07  7:56   ` AKASHI Takahiro
2018-09-07  7:56 ` AKASHI Takahiro [this message]
2018-09-07  7:56   ` [PATCH v14 05/16] kexec_file: kexec_walk_memblock() only walks a dedicated region at kdump AKASHI Takahiro
2018-09-07  7:56   ` AKASHI Takahiro

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