diff options
| author |   Kees Cook <keescook@chromium.org> | 2018-10-17 17:20:35 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2018-10-22 07:11:58 -0700 |
| commit | 1227daa43bce1318ff6fb54e6cd862b4f60245c7 (patch) | |
| tree | 013a4433679d8626d6a6fab52ae201b0e6571b3f /include/linux/pstore_ram.h | |
| parent | pstore: Refactor compression initialization (diff) | |
| download | wireguard-linux-1227daa43bce1318ff6fb54e6cd862b4f60245c7.tar.xz wireguard-linux-1227daa43bce1318ff6fb54e6cd862b4f60245c7.zip | |
pstore/ram: Clarify resource reservation labels
When ramoops reserved a memory region in the kernel, it had an unhelpful
label of "persistent_memory". When reading /proc/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:
400000000-407ffffff : Persistent Memory (legacy)
400000000-400000fff : persistent_memory
400001000-400001fff : persistent_memory
...
4000ff000-4000fffff : persistent_memory
Instead, this adds meaningful labels for how the various regions are
being used:
400000000-407ffffff : Persistent Memory (legacy)
400000000-400000fff : ramoops:dump(0/252)
400001000-400001fff : ramoops:dump(1/252)
...
4000fc000-4000fcfff : ramoops:dump(252/252)
4000fd000-4000fdfff : ramoops:console
4000fe000-4000fe3ff : ramoops:ftrace(0/3)
4000fe400-4000fe7ff : ramoops:ftrace(1/3)
4000fe800-4000febff : ramoops:ftrace(2/3)
4000fec00-4000fefff : ramoops:ftrace(3/3)
4000ff000-4000fffff : ramoops:pmsg
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Tested-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Tested-by: Guenter Roeck <groeck@chromium.org>
Diffstat (limited to 'include/linux/pstore_ram.h')
| -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 e6d226464838..602d64725222 100644 --- a/include/linux/pstore_ram.h +++ b/include/linux/pstore_ram.h @@ -46,6 +46,7 @@ struct persistent_ram_zone { phys_addr_t paddr; size_t size; void *vaddr; + char *label; struct persistent_ram_buffer *buffer; size_t buffer_size; u32 flags; @@ -65,7 +66,7 @@ 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, u32 flags); + unsigned int memtype, u32 flags, char *label); void persistent_ram_free(struct persistent_ram_zone *prz); void persistent_ram_zap(struct persistent_ram_zone *prz); |