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| author | Kees Cook <keescook@chromium.org> | 2019-03-15 10:14:45 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-03-18 09:43:35 +0100 |
| commit | 34e46e5863fbf24af9b81bf5330d7301c9f58260 (patch) | |
| tree | eca46e343e5b194d302704ac34f0aa59e2e0ffdb /include | |
| parent | f620beeb9af83fd6b60b7a0126e677a38d0205a1 (diff) | |
| download | barebox-34e46e5863fbf24af9b81bf5330d7301c9f58260.tar.gz barebox-34e46e5863fbf24af9b81bf5330d7301c9f58260.tar.xz | |
pstore/ram: Clarify resource reservation labels
When ramoops reserved a memory region in the kernel, it had an unhelpful
label of "persistent ram". When reading iomem, it would be repeated many
times, did not hint that it was ramoops in particular, and didn't
clarify very much about what each was used for:
0x4fdd4000 - 0x4fdf3fff (size 0x00020000) persistent ram
0x4fdf4000 - 0x4fe13fff (size 0x00020000) persistent ram
...
0x4ff74000 - 0x4ff93fff (size 0x00020000) persistent ram
0x4ff94000 - 0x4ffb3fff (size 0x00020000) persistent ram
0x4ffb4000 - 0x4ffd3fff (size 0x00020000) persistent ram
Instead, this adds meaningful labels for how the various regions are
being used:
0x4fdd4000 - 0x4fdf3fff (size 0x00020000) ramoops:dump(0/12)
0x4fdf4000 - 0x4fe13fff (size 0x00020000) ramoops:dump(1/12)
...
0x4ff74000 - 0x4ff93fff (size 0x00020000) ramoops:console
0x4ff94000 - 0x4ffb3fff (size 0x00020000) ramoops:ftrace
0x4ffb4000 - 0x4ffd3fff (size 0x00020000) ramoops:pmsg
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
[p.zabel@pengutronix.de: ported to Barebox from Linux commit 1227daa43bce]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pstore_ram.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/pstore_ram.h b/include/linux/pstore_ram.h index ecdd229dd4..de6eaa93f9 100644 --- a/include/linux/pstore_ram.h +++ b/include/linux/pstore_ram.h @@ -35,6 +35,7 @@ struct persistent_ram_ecc_info { struct persistent_ram_zone { phys_addr_t paddr; size_t size; + char *label; struct persistent_ram_buffer *buffer; size_t buffer_size; struct resource *res; @@ -53,7 +54,7 @@ struct persistent_ram_zone { struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size, u32 sig, struct persistent_ram_ecc_info *ecc_info, - unsigned int memtype); + unsigned int memtype, char *label); void persistent_ram_free(struct persistent_ram_zone *prz); void persistent_ram_zap(struct persistent_ram_zone *prz); |