9:38 p.m.
Thank you for the update, qiwu.
On Wed, Jul 31, 2024 at 7:45 PM <devel-request(a)lists.crash-utility.osci.io>
wrote:
Date: Wed, 31 Jul 2024 09:20:30 -0000
From: qiwu.chen(a)transsion.com
Subject: [Crash-utility] [PATCH v2] arm64: fix regression for the
determination of section_size_bits
To: devel(a)lists.crash-utility.osci.io
Message-ID: <20240731092030.17290.83380(a)lists.crash-utility.osci.io>
Content-Type: text/plain; charset="utf-8"
The commit 568c6f04 will cause a regression issue for the determination of
section_size_bits on kernel version before android12-5.10 or Linux-v5.12.
The section_size_bits is supposed to be compatible with linux upstream and
android GKI version:
Before android12-5.10 or Linux-v5.12:
SECTION_SIZE_BITS = 30
After android12-5.10 or Linux-v5.12:
SECTION_SIZE_BITS = 27 when defined 4K_PAGES or 16K_PAGES.
SECTION_SIZE_BITS = 29 when defined 64K_PAGES.
Introduce arm64_get_andriod_gki_version() to get Andriod GKI version by
ut->release.
The Andriod GKI version is determined either by
arm64_get_andriod_gki_version()
or the kernel config "CONFIG_ANDROID_KABI_RESERVE".
Fixes: 568c6f04 ("arm64: section_size_bits compatible with macro
definitions")
Signed-off-by: qiwu.chen <qiwu.chen(a)transsion.com>
---
arm64.c | 68 ++++++++++++++++++++++++++++++++++++++++++---------------
1 file changed, 51 insertions(+), 17 deletions(-)
diff --git a/arm64.c b/arm64.c
index 78e6609..679f2ab 100644
--- a/arm64.c
+++ b/arm64.c
@@ -95,6 +95,13 @@ static void arm64_calc_KERNELPACMASK(void);
static void arm64_recalc_KERNELPACMASK(void);
static int arm64_get_vmcoreinfo(unsigned long *vaddr, const char *label,
int base);
+/* Andriod GKI version definition */
+struct andriod_gki_version {
+ int kernel_version;
+ int kernel_patch_level;
+ int android_version;
+};
+
This is specific version information related to Android, to be honest, I'm
not very familiar with Android things.
Anyway, I'm wondering if it's possible to not add the specific Android
version information?
struct kernel_range {
unsigned long modules_vaddr, modules_end;
unsigned long vmalloc_start_addr, vmalloc_end;
@@ -1615,6 +1622,30 @@ arm64_calc_phys_offset(void)
fprintf(fp, "using %lx as phys_offset\n", ms->phys_offset);
}
+/*
+ * Determine Andriod GKI vmcore by reading "android" from ut->release.
+ * The prefix of Andriod GKI release version is:
+ * Kernel Version - Android release version
+ * For example:
+ * 5.10.209-android12, 5.15.148-android13
+ */
+static bool arm64_get_andriod_gki_version(struct andriod_gki_version
*version)
+{
+ char *p;
+ struct new_utsname *uts = &kt->utsname;
+
+ if ((p = strstr(uts->release, "android"))) {
+ sscanf(uts->release, "%d.%d",
&version->kernel_version,
&version->kernel_patch_level);
+ sscanf(p, "android%d", &version->android_version);
+ if (CRASHDEBUG(1))
+ fprintf(fp, "andriod_gki_version:
andriod%d-%d.%d\n",
+ version->android_version,
version->kernel_version, version->kernel_patch_level);
+ return true;
+ }
+
+ return false;
+}
+
/*
* Determine SECTION_SIZE_BITS either by reading VMCOREINFO or the kernel
* config, otherwise use the 64-bit ARM default definiton.
@@ -1624,8 +1655,17 @@ arm64_get_section_size_bits(void)
{
int ret;
char *string;
+ bool is_ikconfig_avail;
+ struct andriod_gki_version ver = {0};
- if (THIS_KERNEL_VERSION >= LINUX(5,12,0)) {
+ if (arm64_get_vmcoreinfo(&machdep->section_size_bits,
"NUMBER(SECTION_SIZE_BITS)", NUM_DEC))
+ goto exit;
+
+ is_ikconfig_avail = kt->ikconfig_flags & IKCONFIG_AVAIL ? TRUE :
FALSE;
+ /* The commit reduce section size for arm64 sparsemem is
introduced since linux-v5.12 and android-12-5.10 */
+ if (THIS_KERNEL_VERSION >= LINUX(5,12,0) ||
+ (is_ikconfig_avail &&
get_kernel_config("CONFIG_ANDROID_KABI_RESERVE", NULL) == IKCONFIG_Y) ||
+ (arm64_get_andriod_gki_version(&ver) && (ver.kernel_version *
100 + ver.kernel_patch_level >= 510) && ver.android_version >= 12)) {
It's not a good idea to decide how your code should be executed by checking
version information, although similar code exists in crash tools, I would
not recommend this way, unless we have no better solutions. Could you
please investigate it more?
Thanks
Lianbo
if (machdep->pagesize == 65536)
machdep->section_size_bits =
_SECTION_SIZE_BITS_5_12_64K;
else
@@ -1633,24 +1673,18 @@ arm64_get_section_size_bits(void)
} else
machdep->section_size_bits = _SECTION_SIZE_BITS;
- if (arm64_get_vmcoreinfo(&machdep->section_size_bits,
"NUMBER(SECTION_SIZE_BITS)", NUM_DEC)) {
- /* nothing */
- } else if (kt->ikconfig_flags & IKCONFIG_AVAIL) {
- if ((ret = get_kernel_config("CONFIG_MEMORY_HOTPLUG",
NULL)) == IKCONFIG_Y) {
- if ((ret =
get_kernel_config("CONFIG_HOTPLUG_SIZE_BITS", &string)) == IKCONFIG_STR)
- machdep->section_size_bits = atol(string);
- }
-
- /* arm64: reduce section size for sparsemem */
- if ((ret = get_kernel_config("CONFIG_ARM64_4K_PAGES",
NULL)) == IKCONFIG_Y
- || (ret =
get_kernel_config("CONFIG_ARM64_16K_PAGES", NULL)) == IKCONFIG_Y)
- machdep->section_size_bits =
_SECTION_SIZE_BITS_5_12;
- else if ((ret =
get_kernel_config("CONFIG_ARM64_64K_PAGES", NULL)) == IKCONFIG_Y)
- machdep->section_size_bits =
_SECTION_SIZE_BITS_5_12_64K;
+ /* section_size_bits for arm64 vendor special case */
+ if (is_ikconfig_avail &&
get_kernel_config("CONFIG_MEMORY_HOTPLUG", NULL) == IKCONFIG_Y) {
+ if (get_kernel_config("CONFIG_HOTPLUG_SIZE_BITS", &string)
== IKCONFIG_STR)
+ machdep->section_size_bits = atol(string);
}
- if (CRASHDEBUG(1))
- fprintf(fp, "SECTION_SIZE_BITS: %ld\n",
machdep->section_size_bits);
+exit:
+ if (machdep->section_size_bits) {
+ if (CRASHDEBUG(1))
+ fprintf(fp, "SECTION_SIZE_BITS: %ld\n",
machdep->section_size_bits);
+ } else
+ error(FATAL, "cannot determine SECTION_SIZE_BITS\n");
}
/*
--
2.25.1
9:18 a.m.
New subject: [PATCH v2] arm64: fix regression for the determination of section_size_bits
Hi Lianbo,
This is specific version information related to Android, to be honest, I'm
not very familiar with Android things.
Anyway, I'm wondering if it's possible to not add the specific Android
version information?
As I mentioned in previous mail:
https://lists.crash-utility.osci.io/archives/list/devel@lists.crash-utili...
The Andriod GKI version is determined by both Android version and kernel version. It's
neccessry to parse the specific Android version to determine the section_size_bits for
Andriod GKI vmcore.
The change of SECTION_SIZE_BITS is backport from mainline Linux since android12-5.10 later
version which meets the following condition:
Kernel Version >= 5.10 && Android release version >= 12
It's not a good idea to decide how your code should be executed by checking
version information, although similar code exists in crash tools, I would
not recommend this way, unless we have no better solutions. Could you
please investigate it more?
I have no other better soulution to distinguish the Anrdiord GKI version before or
after android12-5.10 after investigated it.
Thanks
Qiwu
10:53 p.m.
New subject: [PATCH v2] arm64: fix regression for the determination of section_size_bits
Hi lianbo
Base on qiwu's patch, is this attached patch OK ?
From 08d4af144b981daf292473303e08546ef1e81a04 Mon Sep 17 00:00:00 2001
From: chenguanyou <chenguanyou(a)xiaomi.com>
Date: Thu, 8 Aug 2024 17:35:07 +0800
Subject: [PATCH] arm64: fix regression for the determination of
section_size_bits
The commit 568c6f04 will cause a regression issue for the determination of
section_size_bits on kernel version before android12-5.10 or Linux-v5.12.
The section_size_bits is supposed to be compatible with linux upstream and
android GKI version:
Before android12-5.10 or Linux-v5.12:
SECTION_SIZE_BITS = 30
After android12-5.10 or Linux-v5.12:
SECTION_SIZE_BITS = 27 when defined 4K_PAGES or 16K_PAGES.
SECTION_SIZE_BITS = 29 when defined 64K_PAGES.
Fixes: 568c6f04 ("arm64: section_size_bits compatible with macro definitions")
Change-Id: Ib6ec610753aabb52dfbafab65e1e6c04cbe65f72
Signed-off-by: qiwu.chen <qiwu.chen(a)transsion.com>
Signed-off-by: chenguanyou <chenguanyou(a)xiaomi.com>
---
arm64.c | 22 ++++++++++------------
defs.h | 10 ++++++++++
global_data.c | 7 +++++++
kernel.c | 23 +++++++++++++++++++++++
4 files changed, 50 insertions(+), 12 deletions(-)
diff --git a/arm64.c b/arm64.c
index 8ed1aaf..f0721b7 100644
--- a/arm64.c
+++ b/arm64.c
@@ -1667,30 +1667,28 @@ arm64_get_section_size_bits(void)
int ret;
char *string;
- if (THIS_KERNEL_VERSION >= LINUX(5,12,0)) {
+ if (arm64_get_vmcoreinfo(&machdep->section_size_bits,
"NUMBER(SECTION_SIZE_BITS)", NUM_DEC))
+ goto exit;
+
+ if (THIS_KERNEL_VERSION >= LINUX(5,12,0)
+ || (IS_ANDROID_KERNEL_REL
+ && THIS_KERNEL_VERSION >= LINUX(5,10,0)
+ && THIS_ANDROID_VERSION >= ANDROID(12,0)))
if (machdep->pagesize == 65536)
machdep->section_size_bits = _SECTION_SIZE_BITS_5_12_64K;
else
machdep->section_size_bits = _SECTION_SIZE_BITS_5_12;
- } else
+ else
machdep->section_size_bits = _SECTION_SIZE_BITS;
- if (arm64_get_vmcoreinfo(&machdep->section_size_bits,
"NUMBER(SECTION_SIZE_BITS)", NUM_DEC)) {
- /* nothing */
- } else if (kt->ikconfig_flags & IKCONFIG_AVAIL) {
+ if (kt->ikconfig_flags & IKCONFIG_AVAIL) {
if ((ret = get_kernel_config("CONFIG_MEMORY_HOTPLUG", NULL)) ==
IKCONFIG_Y) {
if ((ret = get_kernel_config("CONFIG_HOTPLUG_SIZE_BITS",
&string)) == IKCONFIG_STR)
machdep->section_size_bits = atol(string);
}
-
- /* arm64: reduce section size for sparsemem */
- if ((ret = get_kernel_config("CONFIG_ARM64_4K_PAGES", NULL)) ==
IKCONFIG_Y
- || (ret = get_kernel_config("CONFIG_ARM64_16K_PAGES", NULL)) ==
IKCONFIG_Y)
- machdep->section_size_bits = _SECTION_SIZE_BITS_5_12;
- else if ((ret = get_kernel_config("CONFIG_ARM64_64K_PAGES", NULL)) ==
IKCONFIG_Y)
- machdep->section_size_bits = _SECTION_SIZE_BITS_5_12_64K;
}
+exit:
if (CRASHDEBUG(1))
fprintf(fp, "SECTION_SIZE_BITS: %ld\n", machdep->section_size_bits);
}
diff --git a/defs.h b/defs.h
index 1b7649d..b0d3f8f 100644
--- a/defs.h
+++ b/defs.h
@@ -829,6 +829,15 @@ struct kernel_table { /* kernel data */
#define IS_KERNEL_STATIC_TEXT(x) (((ulong)(x) >= kt->stext) && \
((ulong)(x) < kt->etext))
+#define THIS_KERNEL_RELEASE (kt->utsname.release)
+
+struct android_table {
+ uint android_version[2];
+};
+#define IS_ANDROID_KERNEL_REL (at->android_version[0] > 0)
+#define THIS_ANDROID_VERSION ((at->android_version[0] << 16) +
(at->android_version[1]))
+#define ANDROID(x,y) (((uint)(x) << 16) + (uint)(y))
+
#define TASK_COMM_LEN 16 /* task command name length including NULL */
struct task_context { /* context stored for each task */
@@ -5353,6 +5362,7 @@ extern struct vm_table vm_table, *vt;
extern struct machdep_table *machdep;
extern struct symbol_table_data symbol_table_data, *st;
extern struct extension_table *extension_table;
+extern struct android_table android_table, *at;
/*
* Generated in build_data.c
diff --git a/global_data.c b/global_data.c
index f9bb7d0..dddde96 100644
--- a/global_data.c
+++ b/global_data.c
@@ -55,6 +55,13 @@ struct symbol_table_data *st = &symbol_table_data;
struct machdep_table machdep_table = { 0 };
struct machdep_table *machdep = &machdep_table;
+/*
+ * The same thing goes for accesses to the frequently-accessed android_table,
+ * making the "at" pointers globally available.
+ */
+struct android_table android_table = { 0, 0 };
+struct android_table *at = &android_table;
+
/*
* Command functions are entered with the args[] array and argcnt value
* pre-set for issuance to getopt().
diff --git a/kernel.c b/kernel.c
index adb19ad..814418c 100644
--- a/kernel.c
+++ b/kernel.c
@@ -104,6 +104,26 @@ static void check_vmcoreinfo(void);
static int is_pvops_xen(void);
static int get_linux_banner_from_vmlinux(char *, size_t);
+/*
+ * Determine Andriod GKI vmcore by reading "android" from ut->release.
+ * The prefix of Andriod GKI release version is:
+ * Kernel Version - Android release version
+ * For example:
+ * 5.10.209-android12, 5.10.209-android12.1, 5.15.148-android13
+ */
+void
+parse_android_table(void)
+{
+ char *p;
+ if ((p = strstr(THIS_KERNEL_RELEASE, "android"))) {
+ sscanf(p, "android%d.%d", &at->android_version[0],
&at->android_version[1]);
+
+ if (CRASHDEBUG(1))
+ fprintf(fp, "andriod_version: andriod-%d.%d\n",
+ at->android_version[0], at->android_version[1]);
+ }
+}
+
/*
* popuplate the global kernel table (kt) with kernel version
* information parsed from UTSNAME/OSRELEASE string
@@ -298,6 +318,9 @@ kernel_init()
kt->utsname.domainname : "(not printable)");
}
+ // non-upstream rel
+ parse_android_table();
+
strncpy(buf, kt->utsname.release, 65);
if (buf[64])
buf[64] = NULLCHAR;
--
2.39.0
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days inactive
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days old
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2 comments
3 participants
participants (3)
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chenguanyou9338＠gmail.com -
lijiang -
qiwu.chen＠transsion.com