| Message ID | 0721f629d5e75b7b7e655458a63cbd767baaa409.1626266516.git.geert+renesas@glider.be (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add generic support for kdump DT properties | expand |
On Wed, Jul 14, 2021 at 02:50:11PM +0200, Geert Uytterhoeven wrote: > Make the forward declarations of elfcorehdr_addr and elfcorehdr_size > always available, like is done for phys_initrd_start and > phys_initrd_size. Code referring to these symbols can then just check > for IS_ENABLED(CONFIG_CRASH_DUMP), instead of requiring conditional > compilation using an #ifdef, thus preparing to increase compile > coverage. > > Suggested-by: Rob Herring <robh+dt@kernel.org> > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> > --- > v4: > - New. > --- > include/linux/crash_dump.h | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) > > diff --git a/include/linux/crash_dump.h b/include/linux/crash_dump.h > index a5192b718dbe4f9a..ad31893d13d634de 100644 > --- a/include/linux/crash_dump.h > +++ b/include/linux/crash_dump.h > @@ -10,13 +10,14 @@ > > #include <linux/pgtable.h> /* for pgprot_t */ > > +/* For IS_ENABLED(CONFIG_CRASH_DUMP) */ > +extern unsigned long long elfcorehdr_addr; > +extern unsigned long long elfcorehdr_size; > + > #ifdef CONFIG_CRASH_DUMP > #define ELFCORE_ADDR_MAX (-1ULL) > #define ELFCORE_ADDR_ERR (-2ULL) Seems like these could be needed and no need to hide them, so perhaps just move the #ifdef down. > > -extern unsigned long long elfcorehdr_addr; > -extern unsigned long long elfcorehdr_size; > - > extern int elfcorehdr_alloc(unsigned long long *addr, unsigned long long *size); > extern void elfcorehdr_free(unsigned long long addr); > extern ssize_t elfcorehdr_read(char *buf, size_t count, u64 *ppos); > -- > 2.25.1 > >
diff --git a/include/linux/crash_dump.h b/include/linux/crash_dump.h index a5192b718dbe4f9a..ad31893d13d634de 100644 --- a/include/linux/crash_dump.h +++ b/include/linux/crash_dump.h @@ -10,13 +10,14 @@ #include <linux/pgtable.h> /* for pgprot_t */ +/* For IS_ENABLED(CONFIG_CRASH_DUMP) */ +extern unsigned long long elfcorehdr_addr; +extern unsigned long long elfcorehdr_size; + #ifdef CONFIG_CRASH_DUMP #define ELFCORE_ADDR_MAX (-1ULL) #define ELFCORE_ADDR_ERR (-2ULL) -extern unsigned long long elfcorehdr_addr; -extern unsigned long long elfcorehdr_size; - extern int elfcorehdr_alloc(unsigned long long *addr, unsigned long long *size); extern void elfcorehdr_free(unsigned long long addr); extern ssize_t elfcorehdr_read(char *buf, size_t count, u64 *ppos);
Make the forward declarations of elfcorehdr_addr and elfcorehdr_size always available, like is done for phys_initrd_start and phys_initrd_size. Code referring to these symbols can then just check for IS_ENABLED(CONFIG_CRASH_DUMP), instead of requiring conditional compilation using an #ifdef, thus preparing to increase compile coverage. Suggested-by: Rob Herring <robh+dt@kernel.org> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> --- v4: - New. --- include/linux/crash_dump.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)