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soc: qcom: Enable meminfo support in minidump

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Register and dump meminfo on kernel panic to minidump
table.

Change-Id: I367d09ce8aabf4feda6d352411d9e10038a37ff9
Signed-off-by: Vijayanand Jitta <vjitta@codeaurora.org>
This commit is contained in:
Vijayanand Jitta 2020-07-15 18:15:04 +05:30 committed by Gerrit - the friendly Code Review server
parent 1f4340c001
commit 2ae883be00
3 changed files with 54 additions and 9 deletions
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9
drivers/soc/qcom/minidump_log.c
View File

@ -101,6 +101,11 @@ static int die_cpu = -1;
static struct seq_buf *md_cntxt_seq_buf;
#endif
/* Meminfo */
#define MD_MEMINFO_PAGES 1
struct seq_buf *md_meminfo_seq_buf;
/* Modules information */
#ifdef CONFIG_MODULES
#define NUM_MD_MODULES 200
@ -961,6 +966,8 @@ static int md_panic_handler(struct notifier_block *this,
#ifdef CONFIG_MODULES
md_dump_module_data();
#endif
if (md_meminfo_seq_buf)
md_dump_meminfo();
md_in_oops_handler = false;
return NOTIFY_DONE;
}
@ -1031,6 +1038,8 @@ static void md_register_panic_data(void)
md_register_panic_entries(MD_CPU_CNTXT_PAGES, "KCNTXT",
&md_cntxt_seq_buf);
#endif
md_register_panic_entries(MD_MEMINFO_PAGES, "MEMINFO",
&md_meminfo_seq_buf);
}
#ifdef CONFIG_MODULES

50
fs/proc/meminfo.c
View File

@ -20,15 +20,39 @@
#include <asm/page.h>
#include <asm/pgtable.h>
#include "internal.h"
#ifdef CONFIG_QCOM_MINIDUMP_PANIC_DUMP
#include <soc/qcom/minidump.h>
#include <linux/seq_buf.h>
#endif
void __attribute__((weak)) arch_report_meminfo(struct seq_file *m)
{
}
static void show_val_kb2(struct seq_file *m, const char *s, unsigned long num)
{
if (m) {
seq_printf(m, s, num);
} else {
#ifdef CONFIG_QCOM_MINIDUMP_PANIC_DUMP
if (md_meminfo_seq_buf)
seq_buf_printf(md_meminfo_seq_buf, s, num);
#endif
}
}
static void show_val_kb(struct seq_file *m, const char *s, unsigned long num)
{
seq_put_decimal_ull_width(m, s, num << (PAGE_SHIFT - 10), 8);
seq_write(m, " kB\n", 4);
if (m) {
seq_put_decimal_ull_width(m, s, num << (PAGE_SHIFT - 10), 8);
seq_write(m, " kB\n", 4);
} else {
#ifdef CONFIG_QCOM_MINIDUMP_PANIC_DUMP
if (md_meminfo_seq_buf)
seq_buf_printf(md_meminfo_seq_buf, "%s : %lld KB\n", s,
num << (PAGE_SHIFT - 10));
#endif
}
}
static int meminfo_proc_show(struct seq_file *m, void *v)
@ -103,10 +127,10 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
show_val_kb(m, "Slab: ", sreclaimable + sunreclaim);
show_val_kb(m, "SReclaimable: ", sreclaimable);
show_val_kb(m, "SUnreclaim: ", sunreclaim);
seq_printf(m, "KernelStack: %8lu kB\n",
show_val_kb2(m, "KernelStack: %8lu kB\n",
global_zone_page_state(NR_KERNEL_STACK_KB));
#ifdef CONFIG_SHADOW_CALL_STACK
seq_printf(m, "ShadowCallStack:%8lu kB\n",
show_val_kb2(m, "ShadowCallStack:%8lu kB\n",
global_zone_page_state(NR_KERNEL_SCS_BYTES) / 1024);
#endif
show_val_kb(m, "PageTables: ",
@ -120,14 +144,14 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
global_node_page_state(NR_WRITEBACK_TEMP));
show_val_kb(m, "CommitLimit: ", vm_commit_limit());
show_val_kb(m, "Committed_AS: ", committed);
seq_printf(m, "VmallocTotal: %8lu kB\n",
show_val_kb2(m, "VmallocTotal: %8lu kB\n",
(unsigned long)VMALLOC_TOTAL >> 10);
show_val_kb(m, "VmallocUsed: ", vmalloc_nr_pages());
show_val_kb(m, "VmallocChunk: ", 0ul);
show_val_kb(m, "Percpu: ", pcpu_nr_pages());
#ifdef CONFIG_MEMORY_FAILURE
seq_printf(m, "HardwareCorrupted: %5lu kB\n",
show_val_kb2(m, "HardwareCorrupted: %5lu kB\n",
atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10));
#endif
@ -150,13 +174,21 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
global_zone_page_state(NR_FREE_CMA_PAGES));
#endif
hugetlb_report_meminfo(m);
arch_report_meminfo(m);
if (m) {
hugetlb_report_meminfo(m);
arch_report_meminfo(m);
}
return 0;
}
#ifdef CONFIG_QCOM_MINIDUMP_PANIC_DUMP
void md_dump_meminfo(void)
{
meminfo_proc_show(NULL, NULL);
}
#endif
static int __init proc_meminfo_init(void)
{
proc_create_single("meminfo", 0, NULL, meminfo_proc_show);

4
include/soc/qcom/minidump.h
View File

@ -32,6 +32,8 @@ struct md_region {
* Negative error number on failures.
*/
#if IS_ENABLED(CONFIG_QCOM_MINIDUMP)
extern struct seq_buf *md_meminfo_seq_buf;
extern int msm_minidump_add_region(const struct md_region *entry);
extern int msm_minidump_remove_region(const struct md_region *entry);
/*
@ -44,6 +46,7 @@ extern int msm_minidump_remove_region(const struct md_region *entry);
extern int msm_minidump_update_region(int regno, const struct md_region *entry);
extern bool msm_minidump_enabled(void);
extern void dump_stack_minidump(u64 sp);
extern void md_dump_meminfo(void);
#else
static inline int msm_minidump_add_region(const struct md_region *entry)
{
@ -57,6 +60,7 @@ static inline int msm_minidump_remove_region(const struct md_region *entry)
static inline bool msm_minidump_enabled(void) { return false; }
static inline void dump_stack_minidump(u64 sp) {}
static inline void add_trace_event(char *buf, size_t size) {}
static inline void md_dump_meminfo(void) {}
#endif
#ifdef CONFIG_QCOM_MINIDUMP_FTRACE
extern void minidump_add_trace_event(char *buf, size_t size);