* [PATCH v2] kconfig: make unmet dependency warnings readable
@ 2018-03-06 10:51 Masahiro Yamada
2018-03-06 16:49 ` Petr Vorel
2018-03-10 0:07 ` Eugeniu Rosca
0 siblings, 2 replies; 4+ messages in thread
From: Masahiro Yamada @ 2018-03-06 10:51 UTC (permalink / raw)
To: linux-kbuild
Cc: Sam Ravnborg, Michal Marek, Ulf Magnusson, Eugeniu Rosca,
Randy Dunlap, Petr Vorel, Linus Torvalds, Masahiro Yamada,
linux-kernel
Currently, the unmet dependency warnings end up with endlessly long
expressions, most of which are false positives.
Here is test code to demonstrate how it currently works.
[Test Case]
config DEP1
def_bool y
config DEP2
def_bool n
config A
bool "A"
select E
config B
bool "B"
depends on DEP2
select E
config C
bool "C"
depends on DEP1 && DEP2
select E
config D
def_bool n
select E
config E
bool
depends on DEP1 && DEP2
[Result]
$ make allyesconfig
scripts/kconfig/conf --allyesconfig Kconfig
warning: (A && B && D) selects E which has unmet direct
dependencies (DEP1 && DEP2)
Here, I see some points to be improved.
First, '(A || B || D)' would make more sense than '(A && B && D)'.
I am not sure if this is intentional, but expr_simplify_unmet_dep()
turns OR expressions into AND, like follows:
case E_OR:
return expr_alloc_and(
Second, we see false positives. 'A' is a real unmet dependency.
'B' is false positive because 'DEP1' is fixed to 'y', and 'B' depends
on 'DEP2'. 'C' was correctly dropped by expr_simplify_unmet_dep().
'D' is also false positive because it has no chance to be enabled.
Current expr_simplify_unmet_dep() cannot avoid those false positives.
After all, I decided to use the same helpers as used for printing
reverse dependencies in the help.
With this commit, unreadable warnings in the real world:
$ make ARCH=score allyesconfig
scripts/kconfig/conf --allyesconfig Kconfig
warning: (HWSPINLOCK_QCOM && AHCI_MTK && STMMAC_PLATFORM && DWMAC_IPQ806X
&& DWMAC_LPC18XX && DWMAC_OXNAS && DWMAC_ROCKCHIP && DWMAC_SOCFPGA && DWMA
C_STI && TI_CPSW && PINCTRL_GEMINI && PINCTRL_OXNAS && PINCTRL_ROCKCHIP &&
PINCTRL_DOVE && PINCTRL_ARMADA_37XX && PINCTRL_STM32 && S3C2410_WATCHDOG
&& VIDEO_OMAP3 && VIDEO_S5P_FIMC && USB_XHCI_MTK && RTC_DRV_AT91SAM9 && LP
C18XX_DMAMUX && VIDEO_OMAP4 && COMMON_CLK_GEMINI && COMMON_CLK_ASPEED && C
OMMON_CLK_NXP && COMMON_CLK_OXNAS && COMMON_CLK_BOSTON && ATMEL_ST && QCOM
_ADSP_PIL && QCOM_Q6V5_PIL && QCOM_GSBI && ATMEL_EBI && ST_IRQCHIP && RESE
T_IMX7 && PHY_HI6220_USB && PHY_RALINK_USB && PHY_ROCKCHIP_PCIE && PHY_DA8
XX_USB) selects MFD_SYSCON which has unmet direct dependencies (HAS_IOMEM)
warning: (PINCTRL_AT91 && PINCTRL_AT91PIO4 && PINCTRL_OXNAS && PINCTRL_PIS
TACHIO && PINCTRL_PIC32 && PINCTRL_MESON && PINCTRL_NOMADIK && PINCTRL_MTK
&& PINCTRL_MT7622 && GPIO_TB10X) selects OF_GPIO which has unmet direct d
ependencies (GPIOLIB && OF && HAS_IOMEM)
warning: (FAULT_INJECTION_STACKTRACE_FILTER && LATENCYTOP && LOCKDEP) sele
cts FRAME_POINTER which has unmet direct dependencies (DEBUG_KERNEL && (CR
IS || M68K || FRV || UML || SUPERH || BLACKFIN || MN10300 || METAG) || ARC
H_WANT_FRAME_POINTERS)
will be turned into:
$ make ARCH=score allyesconfig
scripts/kconfig/conf --allyesconfig Kconfig
WARNING:
Unmet direct dependencies detected for MFD_SYSCON
Depends on:
HAS_IOMEM [=n]
Selected by [y]:
- PINCTRL_STM32 [=y] && PINCTRL [=y] && (ARCH_STM32 || COMPILE_TEST [=y])
&& OF [=y]
- RTC_DRV_AT91SAM9 [=y] && RTC_CLASS [=y] && (ARCH_AT91 || COMPILE_TEST
[=y])
- ATMEL_ST [=y] && GENERIC_CLOCKEVENTS [=y]
- RESET_IMX7 [=y] && RESET_CONTROLLER [=y]
- PHY_HI6220_USB [=y] && (ARCH_HISI && ARM64 || COMPILE_TEST [=y])
- PHY_RALINK_USB [=y] && (RALINK || COMPILE_TEST [=y])
- PHY_ROCKCHIP_PCIE [=y] && (ARCH_ROCKCHIP && OF [=y] || COMPILE_TEST
[=y])
WARNING:
Unmet direct dependencies detected for OF_GPIO
Depends on:
GPIOLIB [=y] && OF [=y] && HAS_IOMEM [=n]
Selected by [y]:
- PINCTRL_MTK [=y] && PINCTRL [=y] && (ARCH_MEDIATEK || COMPILE_TEST
[=y]) && OF [=y]
- PINCTRL_MT7622 [=y] && PINCTRL [=y] && (ARCH_MEDIATEK || COMPILE_TEST
[=y]) && OF [=y] && (ARM64 || COMPILE_TEST [=y])
WARNING:
Unmet direct dependencies detected for FRAME_POINTER
Depends on:
DEBUG_KERNEL [=y] && (CRIS || M68K || FRV || UML || SUPERH || BLACKFIN
|| MN10300 || METAG) || ARCH_WANT_FRAME_POINTERS [=n]
Selected by [y]:
- LATENCYTOP [=y] && DEBUG_KERNEL [=y] && STACKTRACE_SUPPORT [=y] &&
PROC_FS [=y] && !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND &&
!ARC && !X86
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---
Changes in v2:
- update test case
scripts/kconfig/expr.c | 29 -----------------------------
scripts/kconfig/expr.h | 1 -
scripts/kconfig/symbol.c | 33 +++++++++++++++++++++------------
3 files changed, 21 insertions(+), 42 deletions(-)
diff --git a/scripts/kconfig/expr.c b/scripts/kconfig/expr.c
index 49376e1..235e179 100644
--- a/scripts/kconfig/expr.c
+++ b/scripts/kconfig/expr.c
@@ -1150,35 +1150,6 @@ expr_get_leftmost_symbol(const struct expr *e)
return expr_copy(e);
}
-/*
- * Given expression `e1' and `e2', returns the leaf of the longest
- * sub-expression of `e1' not containing 'e2.
- */
-struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2)
-{
- struct expr *ret;
-
- switch (e1->type) {
- case E_OR:
- return expr_alloc_and(
- expr_simplify_unmet_dep(e1->left.expr, e2),
- expr_simplify_unmet_dep(e1->right.expr, e2));
- case E_AND: {
- struct expr *e;
- e = expr_alloc_and(expr_copy(e1), expr_copy(e2));
- e = expr_eliminate_dups(e);
- ret = (!expr_eq(e, e1)) ? e1 : NULL;
- expr_free(e);
- break;
- }
- default:
- ret = e1;
- break;
- }
-
- return expr_get_leftmost_symbol(ret);
-}
-
void expr_print(struct expr *e,
void (*fn)(void *, struct symbol *, const char *),
void *data, int prevtoken)
diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index 8dbf2a4..94a383b 100644
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -305,7 +305,6 @@ struct expr *expr_transform(struct expr *e);
int expr_contains_symbol(struct expr *dep, struct symbol *sym);
bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
-struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2);
void expr_fprint(struct expr *e, FILE *out);
struct gstr; /* forward */
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index 0f7eba7..9138b80 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -333,6 +333,25 @@ static struct symbol *sym_calc_choice(struct symbol *sym)
return def_sym;
}
+static void sym_warn_unmet_dependency(struct symbol *sym)
+{
+ struct gstr gs = str_new();
+
+ str_printf(&gs, "\nWARNING:\n");
+ str_printf(&gs, " Unmet direct dependencies detected for %s\n",
+ sym->name);
+ str_printf(&gs, " Depends on:\n ");
+ expr_gstr_print(sym->dir_dep.expr, &gs);
+ str_printf(&gs, "\n");
+
+ expr_gstr_print_revdep(sym->rev_dep.expr, &gs, yes,
+ " Selected by [y]:\n");
+ expr_gstr_print_revdep(sym->rev_dep.expr, &gs, mod,
+ " Selected by [m]:\n");
+
+ fputs(str_get(&gs), stderr);
+}
+
void sym_calc_value(struct symbol *sym)
{
struct symbol_value newval, oldval;
@@ -414,18 +433,8 @@ void sym_calc_value(struct symbol *sym)
}
}
calc_newval:
- if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) {
- struct expr *e;
- e = expr_simplify_unmet_dep(sym->rev_dep.expr,
- sym->dir_dep.expr);
- fprintf(stderr, "warning: (");
- expr_fprint(e, stderr);
- fprintf(stderr, ") selects %s which has unmet direct dependencies (",
- sym->name);
- expr_fprint(sym->dir_dep.expr, stderr);
- fprintf(stderr, ")\n");
- expr_free(e);
- }
+ if (sym->dir_dep.tri == no && sym->rev_dep.tri != no)
+ sym_warn_unmet_dependency(sym);
newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri);
}
if (newval.tri == mod &&
--
2.7.4
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v2] kconfig: make unmet dependency warnings readable
2018-03-06 10:51 [PATCH v2] kconfig: make unmet dependency warnings readable Masahiro Yamada
@ 2018-03-06 16:49 ` Petr Vorel
2018-03-10 0:07 ` Eugeniu Rosca
1 sibling, 0 replies; 4+ messages in thread
From: Petr Vorel @ 2018-03-06 16:49 UTC (permalink / raw)
To: Masahiro Yamada
Cc: linux-kbuild, Sam Ravnborg, Michal Marek, Ulf Magnusson,
Eugeniu Rosca, Randy Dunlap, Linus Torvalds, linux-kernel
Hi Masahiro,
...
> $ make allyesconfig
> scripts/kconfig/conf --allyesconfig Kconfig
> warning: (A && B && D) selects E which has unmet direct
> dependencies (DEP1 && DEP2)
> Here, I see some points to be improved.
> First, '(A || B || D)' would make more sense than '(A && B && D)'.
Good point, make sense, current is really confusing.
> I am not sure if this is intentional, but expr_simplify_unmet_dep()
> turns OR expressions into AND, like follows:
> case E_OR:
> return expr_alloc_and(
> Second, we see false positives. 'A' is a real unmet dependency.
> 'B' is false positive because 'DEP1' is fixed to 'y', and 'B' depends
> on 'DEP2'. 'C' was correctly dropped by expr_simplify_unmet_dep().
> 'D' is also false positive because it has no chance to be enabled.
> Current expr_simplify_unmet_dep() cannot avoid those false positives.
> After all, I decided to use the same helpers as used for printing
> reverse dependencies in the help.
> With this commit, unreadable warnings in the real world:
> $ make ARCH=score allyesconfig
> scripts/kconfig/conf --allyesconfig Kconfig
> warning: (HWSPINLOCK_QCOM && AHCI_MTK && STMMAC_PLATFORM && DWMAC_IPQ806X
> && DWMAC_LPC18XX && DWMAC_OXNAS && DWMAC_ROCKCHIP && DWMAC_SOCFPGA && DWMA
> C_STI && TI_CPSW && PINCTRL_GEMINI && PINCTRL_OXNAS && PINCTRL_ROCKCHIP &&
> PINCTRL_DOVE && PINCTRL_ARMADA_37XX && PINCTRL_STM32 && S3C2410_WATCHDOG
> && VIDEO_OMAP3 && VIDEO_S5P_FIMC && USB_XHCI_MTK && RTC_DRV_AT91SAM9 && LP
> C18XX_DMAMUX && VIDEO_OMAP4 && COMMON_CLK_GEMINI && COMMON_CLK_ASPEED && C
> OMMON_CLK_NXP && COMMON_CLK_OXNAS && COMMON_CLK_BOSTON && ATMEL_ST && QCOM
> _ADSP_PIL && QCOM_Q6V5_PIL && QCOM_GSBI && ATMEL_EBI && ST_IRQCHIP && RESE
> T_IMX7 && PHY_HI6220_USB && PHY_RALINK_USB && PHY_ROCKCHIP_PCIE && PHY_DA8
> XX_USB) selects MFD_SYSCON which has unmet direct dependencies (HAS_IOMEM)
> warning: (PINCTRL_AT91 && PINCTRL_AT91PIO4 && PINCTRL_OXNAS && PINCTRL_PIS
> TACHIO && PINCTRL_PIC32 && PINCTRL_MESON && PINCTRL_NOMADIK && PINCTRL_MTK
> && PINCTRL_MT7622 && GPIO_TB10X) selects OF_GPIO which has unmet direct d
> ependencies (GPIOLIB && OF && HAS_IOMEM)
> warning: (FAULT_INJECTION_STACKTRACE_FILTER && LATENCYTOP && LOCKDEP) sele
> cts FRAME_POINTER which has unmet direct dependencies (DEBUG_KERNEL && (CR
> IS || M68K || FRV || UML || SUPERH || BLACKFIN || MN10300 || METAG) || ARC
> H_WANT_FRAME_POINTERS)
> will be turned into:
> $ make ARCH=score allyesconfig
> scripts/kconfig/conf --allyesconfig Kconfig
> WARNING:
> Unmet direct dependencies detected for MFD_SYSCON
> Depends on:
> HAS_IOMEM [=n]
> Selected by [y]:
> - PINCTRL_STM32 [=y] && PINCTRL [=y] && (ARCH_STM32 || COMPILE_TEST [=y])
> && OF [=y]
> - RTC_DRV_AT91SAM9 [=y] && RTC_CLASS [=y] && (ARCH_AT91 || COMPILE_TEST
> [=y])
> - ATMEL_ST [=y] && GENERIC_CLOCKEVENTS [=y]
> - RESET_IMX7 [=y] && RESET_CONTROLLER [=y]
> - PHY_HI6220_USB [=y] && (ARCH_HISI && ARM64 || COMPILE_TEST [=y])
> - PHY_RALINK_USB [=y] && (RALINK || COMPILE_TEST [=y])
> - PHY_ROCKCHIP_PCIE [=y] && (ARCH_ROCKCHIP && OF [=y] || COMPILE_TEST
> [=y])
> WARNING:
> Unmet direct dependencies detected for OF_GPIO
> Depends on:
> GPIOLIB [=y] && OF [=y] && HAS_IOMEM [=n]
> Selected by [y]:
> - PINCTRL_MTK [=y] && PINCTRL [=y] && (ARCH_MEDIATEK || COMPILE_TEST
> [=y]) && OF [=y]
> - PINCTRL_MT7622 [=y] && PINCTRL [=y] && (ARCH_MEDIATEK || COMPILE_TEST
> [=y]) && OF [=y] && (ARM64 || COMPILE_TEST [=y])
> WARNING:
> Unmet direct dependencies detected for FRAME_POINTER
> Depends on:
> DEBUG_KERNEL [=y] && (CRIS || M68K || FRV || UML || SUPERH || BLACKFIN
> || MN10300 || METAG) || ARCH_WANT_FRAME_POINTERS [=n]
> Selected by [y]:
> - LATENCYTOP [=y] && DEBUG_KERNEL [=y] && STACKTRACE_SUPPORT [=y] &&
> PROC_FS [=y] && !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND &&
> !ARC && !X86
Although I liked the brevity of current form (one liner is nice), fixing false positives
justify it enough. The same look and feel with help and reusing code makes are also pros.
> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Petr Vorel <petr.vorel@gmail.com>
...
> +static void sym_warn_unmet_dependency(struct symbol *sym)
> +{
> + struct gstr gs = str_new();
> +
> + str_printf(&gs, "\nWARNING:\n");
> + str_printf(&gs, " Unmet direct dependencies detected for %s\n",
Just one change: keep error on the same line as 'WARNING:':
str_printf(&gs, "\nWARNING: Unmet direct dependencies detected for %s\n",
It's make easier to grep error and save space vertically.
Kind regards,
Petr
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] kconfig: make unmet dependency warnings readable
2018-03-06 10:51 [PATCH v2] kconfig: make unmet dependency warnings readable Masahiro Yamada
2018-03-06 16:49 ` Petr Vorel
@ 2018-03-10 0:07 ` Eugeniu Rosca
2018-03-10 15:45 ` Masahiro Yamada
1 sibling, 1 reply; 4+ messages in thread
From: Eugeniu Rosca @ 2018-03-10 0:07 UTC (permalink / raw)
To: Masahiro Yamada
Cc: linux-kbuild, Sam Ravnborg, Michal Marek, Ulf Magnusson,
Eugeniu Rosca, Randy Dunlap, Petr Vorel, Linus Torvalds,
linux-kernel
Hi Masahiro,
Thanks for constantly improving the user experience of Kconfig.
Just one small remark below.
On Tue, Mar 06, 2018 at 07:51:39PM +0900, Masahiro Yamada wrote:
> Currently, the unmet dependency warnings end up with endlessly long
> expressions, most of which are false positives.
>
> Here is test code to demonstrate how it currently works.
>
> [Test Case]
>
> config DEP1
> def_bool y
>
> config DEP2
> def_bool n
>
> config A
> bool "A"
> select E
>
> config B
> bool "B"
> depends on DEP2
> select E
>
> config C
> bool "C"
> depends on DEP1 && DEP2
> select E
>
> config D
> def_bool n
> select E
>
> config E
> bool
> depends on DEP1 && DEP2
>
> [Result]
>
> $ make allyesconfig
> scripts/kconfig/conf --allyesconfig Kconfig
> warning: (A && B && D) selects E which has unmet direct
> dependencies (DEP1 && DEP2)
>
> Here, I see some points to be improved.
>
> First, '(A || B || D)' would make more sense than '(A && B && D)'.
> I am not sure if this is intentional, but expr_simplify_unmet_dep()
> turns OR expressions into AND, like follows:
>
> case E_OR:
> return expr_alloc_and(
>
> Second, we see false positives. 'A' is a real unmet dependency.
> 'B' is false positive because 'DEP1' is fixed to 'y', and 'B' depends
> on 'DEP2'. 'C' was correctly dropped by expr_simplify_unmet_dep().
> 'D' is also false positive because it has no chance to be enabled.
> Current expr_simplify_unmet_dep() cannot avoid those false positives.
>
> After all, I decided to use the same helpers as used for printing
> reverse dependencies in the help.
>
> With this commit, unreadable warnings in the real world:
>
> $ make ARCH=score allyesconfig
> scripts/kconfig/conf --allyesconfig Kconfig
> warning: (HWSPINLOCK_QCOM && AHCI_MTK && STMMAC_PLATFORM && DWMAC_IPQ806X
> && DWMAC_LPC18XX && DWMAC_OXNAS && DWMAC_ROCKCHIP && DWMAC_SOCFPGA && DWMA
> C_STI && TI_CPSW && PINCTRL_GEMINI && PINCTRL_OXNAS && PINCTRL_ROCKCHIP &&
> PINCTRL_DOVE && PINCTRL_ARMADA_37XX && PINCTRL_STM32 && S3C2410_WATCHDOG
> && VIDEO_OMAP3 && VIDEO_S5P_FIMC && USB_XHCI_MTK && RTC_DRV_AT91SAM9 && LP
> C18XX_DMAMUX && VIDEO_OMAP4 && COMMON_CLK_GEMINI && COMMON_CLK_ASPEED && C
> OMMON_CLK_NXP && COMMON_CLK_OXNAS && COMMON_CLK_BOSTON && ATMEL_ST && QCOM
> _ADSP_PIL && QCOM_Q6V5_PIL && QCOM_GSBI && ATMEL_EBI && ST_IRQCHIP && RESE
> T_IMX7 && PHY_HI6220_USB && PHY_RALINK_USB && PHY_ROCKCHIP_PCIE && PHY_DA8
> XX_USB) selects MFD_SYSCON which has unmet direct dependencies (HAS_IOMEM)
> warning: (PINCTRL_AT91 && PINCTRL_AT91PIO4 && PINCTRL_OXNAS && PINCTRL_PIS
> TACHIO && PINCTRL_PIC32 && PINCTRL_MESON && PINCTRL_NOMADIK && PINCTRL_MTK
> && PINCTRL_MT7622 && GPIO_TB10X) selects OF_GPIO which has unmet direct d
> ependencies (GPIOLIB && OF && HAS_IOMEM)
> warning: (FAULT_INJECTION_STACKTRACE_FILTER && LATENCYTOP && LOCKDEP) sele
> cts FRAME_POINTER which has unmet direct dependencies (DEBUG_KERNEL && (CR
> IS || M68K || FRV || UML || SUPERH || BLACKFIN || MN10300 || METAG) || ARC
> H_WANT_FRAME_POINTERS)
>
> will be turned into:
>
> $ make ARCH=score allyesconfig
> scripts/kconfig/conf --allyesconfig Kconfig
>
> WARNING:
> Unmet direct dependencies detected for MFD_SYSCON
> Depends on:
> HAS_IOMEM [=n]
> Selected by [y]:
> - PINCTRL_STM32 [=y] && PINCTRL [=y] && (ARCH_STM32 || COMPILE_TEST [=y])
> && OF [=y]
> - RTC_DRV_AT91SAM9 [=y] && RTC_CLASS [=y] && (ARCH_AT91 || COMPILE_TEST
> [=y])
> - ATMEL_ST [=y] && GENERIC_CLOCKEVENTS [=y]
> - RESET_IMX7 [=y] && RESET_CONTROLLER [=y]
> - PHY_HI6220_USB [=y] && (ARCH_HISI && ARM64 || COMPILE_TEST [=y])
> - PHY_RALINK_USB [=y] && (RALINK || COMPILE_TEST [=y])
> - PHY_ROCKCHIP_PCIE [=y] && (ARCH_ROCKCHIP && OF [=y] || COMPILE_TEST
> [=y])
>
> WARNING:
> Unmet direct dependencies detected for OF_GPIO
> Depends on:
> GPIOLIB [=y] && OF [=y] && HAS_IOMEM [=n]
> Selected by [y]:
> - PINCTRL_MTK [=y] && PINCTRL [=y] && (ARCH_MEDIATEK || COMPILE_TEST
> [=y]) && OF [=y]
> - PINCTRL_MT7622 [=y] && PINCTRL [=y] && (ARCH_MEDIATEK || COMPILE_TEST
> [=y]) && OF [=y] && (ARM64 || COMPILE_TEST [=y])
>
> WARNING:
> Unmet direct dependencies detected for FRAME_POINTER
> Depends on:
> DEBUG_KERNEL [=y] && (CRIS || M68K || FRV || UML || SUPERH || BLACKFIN
> || MN10300 || METAG) || ARCH_WANT_FRAME_POINTERS [=n]
> Selected by [y]:
> - LATENCYTOP [=y] && DEBUG_KERNEL [=y] && STACKTRACE_SUPPORT [=y] &&
> PROC_FS [=y] && !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND &&
> !ARC && !X86
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> ---
>
> Changes in v2:
> - update test case
>
> scripts/kconfig/expr.c | 29 -----------------------------
> scripts/kconfig/expr.h | 1 -
> scripts/kconfig/symbol.c | 33 +++++++++++++++++++++------------
> 3 files changed, 21 insertions(+), 42 deletions(-)
>
> diff --git a/scripts/kconfig/expr.c b/scripts/kconfig/expr.c
> index 49376e1..235e179 100644
> --- a/scripts/kconfig/expr.c
> +++ b/scripts/kconfig/expr.c
> @@ -1150,35 +1150,6 @@ expr_get_leftmost_symbol(const struct expr *e)
> return expr_copy(e);
> }
>
> -/*
> - * Given expression `e1' and `e2', returns the leaf of the longest
> - * sub-expression of `e1' not containing 'e2.
> - */
> -struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2)
> -{
> - struct expr *ret;
> -
> - switch (e1->type) {
> - case E_OR:
> - return expr_alloc_and(
> - expr_simplify_unmet_dep(e1->left.expr, e2),
> - expr_simplify_unmet_dep(e1->right.expr, e2));
> - case E_AND: {
> - struct expr *e;
> - e = expr_alloc_and(expr_copy(e1), expr_copy(e2));
> - e = expr_eliminate_dups(e);
> - ret = (!expr_eq(e, e1)) ? e1 : NULL;
> - expr_free(e);
> - break;
> - }
> - default:
> - ret = e1;
> - break;
> - }
> -
> - return expr_get_leftmost_symbol(ret);
It looks like expr_get_leftmost_symbol() has no more callers left and
could be removed with this patch?
Thanks,
Eugeniu.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] kconfig: make unmet dependency warnings readable
2018-03-10 0:07 ` Eugeniu Rosca
@ 2018-03-10 15:45 ` Masahiro Yamada
0 siblings, 0 replies; 4+ messages in thread
From: Masahiro Yamada @ 2018-03-10 15:45 UTC (permalink / raw)
To: Eugeniu Rosca, Petr Vorel
Cc: Linux Kbuild mailing list, Sam Ravnborg, Michal Marek,
Ulf Magnusson, Randy Dunlap, Linus Torvalds,
Linux Kernel Mailing List
Petr, Eugeniu,
2018-03-10 9:07 GMT+09:00 Eugeniu Rosca <roscaeugeniu@gmail.com>:
>
> It looks like expr_get_leftmost_symbol() has no more callers left and
> could be removed with this patch?
Thanks, I will send v3
with fixes pointed out.
--
Best Regards
Masahiro Yamada
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2018-03-10 15:46 UTC | newest]
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2018-03-06 10:51 [PATCH v2] kconfig: make unmet dependency warnings readable Masahiro Yamada
2018-03-06 16:49 ` Petr Vorel
2018-03-10 0:07 ` Eugeniu Rosca
2018-03-10 15:45 ` Masahiro Yamada
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